add cpp-oatpp-server generator (alpha)

2020-11-09 18:19:23 +08:00
53 changed files with 4915 additions and 0 deletions
--- a/bin/configs/other/cpp-oatpp-server.yaml
+++ b/bin/configs/other/cpp-oatpp-server.yaml
@ -0,0 +1,4 @@
+generatorName: cpp-oatpp-server
+outputDir: samples/server/petstore/cpp-oatpp
+inputSpec: modules/openapi-generator/src/test/resources/3_0/petstore.yaml
+templateDir: modules/openapi-generator/src/main/resources/cpp-oatpp-server
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CppOatppServerCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CppOatppServerCodegen.java
@ -0,0 +1,438 @@
+/*
+ * Copyright 2018 OpenAPI-Generator Contributors (https://openapi-generator.tech)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.openapitools.codegen.languages;
+
+import io.swagger.v3.oas.models.Operation;
+import io.swagger.v3.oas.models.media.ArraySchema;
+import io.swagger.v3.oas.models.media.Schema;
+import io.swagger.v3.oas.models.responses.ApiResponse;
+import io.swagger.v3.oas.models.servers.Server;
+import org.apache.commons.lang3.StringUtils;
+import org.openapitools.codegen.*;
+import org.openapitools.codegen.utils.ModelUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.File;
+import java.util.*;
+
+import static org.openapitools.codegen.utils.StringUtils.underscore;
+
+public class CppOatppServerCodegen extends AbstractCppCodegen {
+    private static final Logger LOGGER = LoggerFactory.getLogger(CppOatppServerCodegen.class);
+
+    protected String implFolder = "impl";
+    protected boolean isAddExternalLibs = true;
+    protected boolean isUseStructModel = false;
+    public static final String OPTIONAL_EXTERNAL_LIB = "addExternalLibs";
+    public static final String OPTIONAL_EXTERNAL_LIB_DESC = "Add the Possibility to fetch and compile external Libraries needed by this Framework.";
+    public static final String OPTION_USE_STRUCT_MODEL = "useStructModel";
+    public static final String OPTION_USE_STRUCT_MODEL_DESC = "Use struct-based model template instead of get/set-based model template";
+    public static final String HELPERS_PACKAGE_NAME = "helpersPackage";
+    public static final String HELPERS_PACKAGE_NAME_DESC = "Specify the package name to be used for the helpers (e.g. org.openapitools.server.helpers).";
+    protected final String PREFIX = "";
+    protected String helpersPackage = "";
+
+    @Override
+    public CodegenType getTag() {
+        return CodegenType.SERVER;
+    }
+
+    @Override
+    public String getName() {
+        return "cpp-oatpp-server";
+    }
+
+    @Override
+    public String getHelp() {
+        // Ref: https://github.com/oatpp/oatpp
+        return "Generates a C++ API server (based on Oat++)";
+    }
+
+    public CppOatppServerCodegen() {
+        super();
+
+        if (StringUtils.isEmpty(modelNamePrefix)) {
+            modelNamePrefix = PREFIX;
+        }
+
+        helpersPackage = "org.openapitools.server.helpers";
+        apiPackage = "org.openapitools.server.api";
+        modelPackage = "org.openapitools.server.model";
+
+        apiTemplateFiles.put("api-header.mustache", ".h");
+        apiTemplateFiles.put("api-source.mustache", ".cpp");
+        apiTemplateFiles.put("api-impl-header.mustache", ".h");
+        apiTemplateFiles.put("api-impl-source.mustache", ".cpp");
+
+        embeddedTemplateDir = templateDir = "cpp-oatpp-server";
+
+        cliOptions.clear();
+        addSwitch(OPTIONAL_EXTERNAL_LIB, OPTIONAL_EXTERNAL_LIB_DESC, this.isAddExternalLibs);
+        addOption(HELPERS_PACKAGE_NAME, HELPERS_PACKAGE_NAME_DESC, this.helpersPackage);
+        addOption(RESERVED_WORD_PREFIX_OPTION, RESERVED_WORD_PREFIX_DESC, this.reservedWordPrefix);
+        addSwitch(OPTION_USE_STRUCT_MODEL, OPTION_USE_STRUCT_MODEL_DESC, this.isUseStructModel);
+        addOption(VARIABLE_NAME_FIRST_CHARACTER_UPPERCASE_OPTION,
+                VARIABLE_NAME_FIRST_CHARACTER_UPPERCASE_DESC,
+                Boolean.toString(this.variableNameFirstCharacterUppercase));
+
+        supportingFiles.add(new SupportingFile("helpers-header.mustache", "model", modelNamePrefix + "Helpers.h"));
+        supportingFiles.add(new SupportingFile("helpers-source.mustache", "model", modelNamePrefix + "Helpers.cpp"));
+        supportingFiles.add(new SupportingFile("main-api-server.mustache", "", modelNamePrefix + "main-api-server.cpp"));
+        supportingFiles.add(new SupportingFile("cmake.mustache", "", "CMakeLists.txt"));
+        supportingFiles.add(new SupportingFile("README.mustache", "", "README.md"));
+
+        languageSpecificPrimitives = new HashSet<String>(
+                Arrays.asList("int", "char", "bool", "long", "float", "double", "int32_t", "int64_t"));
+
+        typeMapping = new HashMap<String, String>();
+        typeMapping.put("date", "std::string");
+        typeMapping.put("DateTime", "std::string");
+        typeMapping.put("string", "std::string");
+        typeMapping.put("integer", "int32_t");
+        typeMapping.put("long", "int64_t");
+        typeMapping.put("boolean", "bool");
+        typeMapping.put("array", "std::vector");
+        typeMapping.put("map", "std::map");
+        typeMapping.put("file", "std::string");
+        typeMapping.put("object", "Object");
+        typeMapping.put("binary", "std::string");
+        typeMapping.put("number", "double");
+        typeMapping.put("UUID", "std::string");
+        typeMapping.put("URI", "std::string");
+        typeMapping.put("ByteArray", "std::string");
+
+        importMapping = new HashMap<String, String>();
+        importMapping.put("std::vector", "#include <vector>");
+        importMapping.put("std::map", "#include <map>");
+        importMapping.put("std::string", "#include <string>");
+        importMapping.put("Object", "#include \"Object.h\"");
+    }
+
+    @Override
+    public void processOpts() {
+        super.processOpts();
+        if (additionalProperties.containsKey(HELPERS_PACKAGE_NAME)) {
+            helpersPackage = (String) additionalProperties.get(HELPERS_PACKAGE_NAME);
+        }
+        if (additionalProperties.containsKey("modelNamePrefix")) {
+            additionalProperties().put("prefix", modelNamePrefix);
+            supportingFiles.clear();
+            supportingFiles.add(new SupportingFile("helpers-header.mustache", "model", modelNamePrefix + "Helpers.h"));
+            supportingFiles.add(new SupportingFile("helpers-source.mustache", "model", modelNamePrefix + "Helpers.cpp"));
+            supportingFiles.add(new SupportingFile("main-api-server.mustache", "", modelNamePrefix + "main-api-server.cpp"));
+            supportingFiles.add(new SupportingFile("cmake.mustache", "", "CMakeLists.txt"));
+            supportingFiles.add(new SupportingFile("README.mustache", "", "README.md"));
+        }
+        if (additionalProperties.containsKey(RESERVED_WORD_PREFIX_OPTION)) {
+            reservedWordPrefix = (String) additionalProperties.get(RESERVED_WORD_PREFIX_OPTION);
+        }
+
+        additionalProperties.put("modelNamespaceDeclarations", modelPackage.split("\\."));
+        additionalProperties.put("modelNamespace", modelPackage.replaceAll("\\.", "::"));
+        additionalProperties.put("apiNamespaceDeclarations", apiPackage.split("\\."));
+        additionalProperties.put("apiNamespace", apiPackage.replaceAll("\\.", "::"));
+        additionalProperties.put("helpersNamespaceDeclarations", helpersPackage.split("\\."));
+        additionalProperties.put("helpersNamespace", helpersPackage.replaceAll("\\.", "::"));
+        additionalProperties.put(RESERVED_WORD_PREFIX_OPTION, reservedWordPrefix);
+
+        if (additionalProperties.containsKey(OPTIONAL_EXTERNAL_LIB)) {
+            setAddExternalLibs(convertPropertyToBooleanAndWriteBack(OPTIONAL_EXTERNAL_LIB));
+        } else {
+            additionalProperties.put(OPTIONAL_EXTERNAL_LIB, isAddExternalLibs);
+        }
+
+        // setup model templates
+        if (additionalProperties.containsKey(OPTION_USE_STRUCT_MODEL))
+            isUseStructModel = convertPropertyToBooleanAndWriteBack(OPTION_USE_STRUCT_MODEL);
+
+        if (isUseStructModel) {
+            LOGGER.info("Using struct-based model template");
+            modelTemplateFiles.put("model-struct-header.mustache", ".h");
+            modelTemplateFiles.put("model-struct-source.mustache", ".cpp");
+        } else {
+            LOGGER.info("Using get/set-based model template");
+            modelTemplateFiles.put("model-header.mustache", ".h");
+            modelTemplateFiles.put("model-source.mustache", ".cpp");
+        }
+    }
+
+    @Override
+    public String toModelImport(String name) {
+        if (importMapping.containsKey(name)) {
+            return importMapping.get(name);
+        } else {
+            return "#include \"" + name + ".h\"";
+        }
+    }
+
+
+    @Override
+    public CodegenModel fromModel(String name, Schema model) {
+        CodegenModel codegenModel = super.fromModel(name, model);
+
+        Set<String> oldImports = codegenModel.imports;
+        codegenModel.imports = new HashSet<>();
+        for (String imp : oldImports) {
+            String newImp = toModelImport(imp);
+            if (!newImp.isEmpty()) {
+                codegenModel.imports.add(newImp);
+            }
+        }
+
+        return codegenModel;
+    }
+
+    @Override
+    public CodegenOperation fromOperation(String path, String httpMethod, Operation operation, List<Server> servers) {
+        CodegenOperation op = super.fromOperation(path, httpMethod, operation, servers);
+
+        if (operation.getResponses() != null && !operation.getResponses().isEmpty()) {
+            ApiResponse apiResponse = findMethodResponse(operation.getResponses());
+
+            if (apiResponse != null) {
+                Schema response = ModelUtils.getSchemaFromResponse(apiResponse);
+                if (response != null) {
+                    CodegenProperty cm = fromProperty("response", response);
+                    op.vendorExtensions.put("x-codegen-response", cm);
+                    if ("HttpContent".equals(cm.dataType)) {
+                        op.vendorExtensions.put("x-codegen-response-ishttpcontent", true);
+                    }
+                }
+            }
+        }
+
+        String pathForOatpp = path.replaceAll("\\{(.*?)}", ":$1");
+        op.vendorExtensions.put("x-codegen-oatpp-path", pathForOatpp);
+
+        return op;
+    }
+
+    @SuppressWarnings("unchecked")
+    @Override
+    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<Object> allModels) {
+        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
+        String classname = (String) operations.get("classname");
+        operations.put("classnameSnakeUpperCase", underscore(classname).toUpperCase(Locale.ROOT));
+        operations.put("classnameSnakeLowerCase", underscore(classname).toLowerCase(Locale.ROOT));
+        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+        for (CodegenOperation op : operationList) {
+            boolean consumeJson = false;
+            boolean isParsingSupported = true;
+            if (op.bodyParam != null) {
+                if (op.bodyParam.vendorExtensions == null) {
+                    op.bodyParam.vendorExtensions = new HashMap<>();
+                }
+
+                boolean isStringOrDate = op.bodyParam.isString || op.bodyParam.isDate;
+                op.bodyParam.vendorExtensions.put("x-codegen-oatpp-is-string-or-date", isStringOrDate);
+            }
+            if (op.consumes != null) {
+                for (Map<String, String> consume : op.consumes) {
+                    if (consume.get("mediaType") != null && consume.get("mediaType").equals("application/json")) {
+                        consumeJson = true;
+                    }
+                }
+            }
+
+            op.httpMethod = op.httpMethod.substring(0, 1).toUpperCase(Locale.ROOT) + op.httpMethod.substring(1).toLowerCase(Locale.ROOT);
+
+            for (CodegenParameter param : op.allParams) {
+                if (param.isFormParam) isParsingSupported = false;
+                if (param.isFile) isParsingSupported = false;
+                if (param.isCookieParam) isParsingSupported = false;
+
+                //TODO: This changes the info about the real type but it is needed to parse the header params
+                if (param.isHeaderParam) {
+                    param.dataType = "Oatpp::Optional<Oatpp::Http::Header::Raw>";
+                    param.baseType = "Oatpp::Optional<Oatpp::Http::Header::Raw>";
+                } else if (param.isQueryParam) {
+                    if (param.isPrimitiveType) {
+                        param.dataType = "Oatpp::Optional<" + param.dataType + ">";
+                    } else {
+                        param.dataType = "Oatpp::Optional<" + param.dataType + ">";
+                        param.baseType = "Oatpp::Optional<" + param.baseType + ">";
+                    }
+                }
+            }
+
+            if (op.vendorExtensions == null) {
+                op.vendorExtensions = new HashMap<>();
+            }
+            op.vendorExtensions.put("x-codegen-oatpp-consumes-json", consumeJson);
+            op.vendorExtensions.put("x-codegen-oatpp-is-parsing-supported", isParsingSupported);
+
+            // Check if any one of the operations needs a model, then at API file level, at least one model has to be included.
+            for (String hdr : op.imports) {
+                if (importMapping.containsKey(hdr)) {
+                    continue;
+                }
+                operations.put("hasModelImport", true);
+            }
+        }
+
+        return objs;
+    }
+
+    @Override
+    public String toModelFilename(String name) {
+        return toModelName(name);
+    }
+
+    @Override
+    public String apiFilename(String templateName, String tag) {
+        String result = super.apiFilename(templateName, tag);
+
+        if (templateName.endsWith("impl-header.mustache")) {
+            int ix = result.lastIndexOf(File.separatorChar);
+            result = result.substring(0, ix) + result.substring(ix, result.length() - 2) + "Impl.h";
+            result = result.replace(apiFileFolder(), implFileFolder());
+        } else if (templateName.endsWith("impl-source.mustache")) {
+            int ix = result.lastIndexOf(File.separatorChar);
+            result = result.substring(0, ix) + result.substring(ix, result.length() - 4) + "Impl.cpp";
+            result = result.replace(apiFileFolder(), implFileFolder());
+        }
+        return result;
+    }
+
+    @Override
+    public String toApiFilename(String name) {
+        return toApiName(name);
+    }
+
+    /**
+     * Optional - type declaration. This is a String which is used by the
+     * templates to instantiate your types. There is typically special handling
+     * for different property types
+     *
+     * @return a string value used as the `dataType` field for model templates,
+     * `returnType` for api templates
+     */
+    @Override
+    public String getTypeDeclaration(Schema p) {
+        String openAPIType = getSchemaType(p);
+
+        if (ModelUtils.isArraySchema(p)) {
+            ArraySchema ap = (ArraySchema) p;
+            Schema inner = ap.getItems();
+            return getSchemaType(p) + "<" + getTypeDeclaration(inner) + ">";
+        } else if (ModelUtils.isMapSchema(p)) {
+            Schema inner = getAdditionalProperties(p);
+            return getSchemaType(p) + "<std::string, " + getTypeDeclaration(inner) + ">";
+        } else if (ModelUtils.isByteArraySchema(p)) {
+            return "std::string";
+        } else if (ModelUtils.isStringSchema(p)
+                || ModelUtils.isDateSchema(p)
+                || ModelUtils.isDateTimeSchema(p) || ModelUtils.isFileSchema(p)
+                || languageSpecificPrimitives.contains(openAPIType)) {
+            return toModelName(openAPIType);
+        }
+
+        return openAPIType;
+    }
+
+    @Override
+    public String toDefaultValue(Schema p) {
+        if (ModelUtils.isBooleanSchema(p)) {
+            return "false";
+        } else if (ModelUtils.isDateSchema(p)) {
+            return "\"\"";
+        } else if (ModelUtils.isDateTimeSchema(p)) {
+            return "\"\"";
+        } else if (ModelUtils.isNumberSchema(p)) {
+            if (ModelUtils.isFloatSchema(p)) {
+                return "0.0f";
+            }
+            return "0.0";
+        } else if (ModelUtils.isIntegerSchema(p)) {
+            if (ModelUtils.isLongSchema(p)) {
+                return "0L";
+            }
+            return "0";
+        } else if (ModelUtils.isByteArraySchema(p)) {
+            return "\"\"";
+        } else if (ModelUtils.isMapSchema(p)) {
+            String inner = getSchemaType(getAdditionalProperties(p));
+            return "std::map<std::string, " + inner + ">()";
+        } else if (ModelUtils.isArraySchema(p)) {
+            ArraySchema ap = (ArraySchema) p;
+            String inner = getSchemaType(ap.getItems());
+            return "std::vector<" + inner + ">()";
+        } else if (!StringUtils.isEmpty(p.get$ref())) { // model
+            return toModelName(ModelUtils.getSimpleRef(p.get$ref())) + "()";
+        } else if (ModelUtils.isStringSchema(p)) {
+            return "\"\"";
+        }
+
+        return "";
+    }
+
+    /**
+     * Location to write model files. You can use the modelPackage() as defined
+     * when the class is instantiated
+     */
+    public String modelFileFolder() {
+        return (outputFolder + "/model").replace("/", File.separator);
+    }
+
+    /**
+     * Location to write api files. You can use the apiPackage() as defined when
+     * the class is instantiated
+     */
+    @Override
+    public String apiFileFolder() {
+        return (outputFolder + "/api").replace("/", File.separator);
+    }
+
+    private String implFileFolder() {
+        return (outputFolder + "/" + implFolder).replace("/", File.separator);
+    }
+
+    /**
+     * Optional - OpenAPI type conversion. This is used to map OpenAPI types in
+     * a `Schema` into either language specific types via `typeMapping` or
+     * into complex models if there is not a mapping.
+     *
+     * @return a string value of the type or complex model for this property
+     */
+    @Override
+    public String getSchemaType(Schema p) {
+        String openAPIType = super.getSchemaType(p);
+        String type = null;
+        if (typeMapping.containsKey(openAPIType)) {
+            type = typeMapping.get(openAPIType);
+            if (languageSpecificPrimitives.contains(type))
+                return toModelName(type);
+        } else
+            type = openAPIType;
+        return toModelName(type);
+    }
+
+    @Override
+    public String getTypeDeclaration(String str) {
+        return toModelName(str);
+    }
+
+    /**
+     * Specify whether external libraries will be added during the generation
+     *
+     * @param value the value to be set
+     */
+    public void setAddExternalLibs(boolean value) {
+        isAddExternalLibs = value;
+    }
+}
--- a/modules/openapi-generator/src/main/resources/META-INF/services/org.openapitools.codegen.CodegenConfig
+++ b/modules/openapi-generator/src/main/resources/META-INF/services/org.openapitools.codegen.CodegenConfig
@ -12,6 +12,7 @@ org.openapitools.codegen.languages.ClojureClientCodegen
 org.openapitools.codegen.languages.ConfluenceWikiCodegen
 org.openapitools.codegen.languages.CppQt5ClientCodegen
 org.openapitools.codegen.languages.CppQt5QHttpEngineServerCodegen
+org.openapitools.codegen.languages.CppOatppServerCodegen
 org.openapitools.codegen.languages.CppPistacheServerCodegen
 org.openapitools.codegen.languages.CppRestbedServerCodegen
 org.openapitools.codegen.languages.CppRestSdkClientCodegen
--- a/modules/openapi-generator/src/main/resources/cpp-oatpp-server/README.mustache
+++ b/modules/openapi-generator/src/main/resources/cpp-oatpp-server/README.mustache
@ -0,0 +1,48 @@
+# REST API Server for {{appName}}
+
+## Overview
+This API Server was generated by the [OpenAPI Generator](https://openapi-generator.tech) project.
+It uses the [Oat++](https://github.com/oatpp/oatpp) Framework.
+
+## Files organization
+The Oat++ C++ REST server generator creates three folders:
+- `api`: This folder contains the handlers for each method specified in the OpenAPI definition. Every handler extracts
+the path and body parameters (if any) from the requests and tries to parse and possibly validate them.
+Once this step is completed, the main API class calls the corresponding abstract method that should be implemented
+by the developer (a basic implementation is provided under the `impl` folder)
+- `impl`: As written above, the implementation folder contains, for each API, the corresponding implementation class,
+which extends the main API class and implements the abstract methods.
+Every method receives the path and body parameters as constant reference variables and a reference to the response
+object, that should be filled with the right response and sent at the end of the method with the command:
+response.send(returnCode, responseBody, [mimeType])
+- `model`: This folder contains the corresponding class for every object schema found in the OpenAPI specification.
+
+The main folder contains also a file with a main that can be used to start the server.
+Of course, is you should customize this file based on your needs
+
+## Installation
+First of all, you need to download and install the libraries listed [here](#libraries-required).
+
+Once the libraries are installed, in order to compile and run the server please follow the steps below:
+```bash
+mkdir build
+cd build
+cmake ..
+make
+```
+
+Once compiled run the server:
+
+```bash
+cd build
+./api-server
+```
+
+## Libraries required
+- [Oat++](http://github.com/oatpp/oatpp)
+- [JSON for Modern C++](https://github.com/nlohmann/json/#integration): Please download the `json.hpp` file and
+put it under the model/nlohmann folder
+
+## Namespaces
+{{{apiPackage}}}
+{{{modelPackage}}}
--- a/modules/openapi-generator/src/main/resources/cpp-oatpp-server/api-header.mustache
+++ b/modules/openapi-generator/src/main/resources/cpp-oatpp-server/api-header.mustache
@ -0,0 +1,72 @@
+{{>licenseInfo}}
+{{#operations}}/*
+ * {{classname}}.h
+ *
+ * {{description}}
+ */
+
+#ifndef {{classname}}_H_
+#define {{classname}}_H_
+
+{{{defaultInclude}}}
+#include <pistache/http.h>
+#include <pistache/router.h>
+#include <pistache/http_headers.h>
+#include <pistache/optional.h>
+{{^hasModelImport}}#include <nlohmann/json.hpp>{{/hasModelImport}}
+
+{{#imports}}{{{import}}}
+{{/imports}}
+
+{{#apiNamespaceDeclarations}}
+namespace {{this}} {
+{{/apiNamespaceDeclarations}}
+
+{{#hasModelImport}}
+using namespace {{modelNamespace}};{{/hasModelImport}}
+
+class {{declspec}} {{classname}} {
+public:
+    {{classname}}(std::shared_ptr<Pistache::Rest::Router>);
+    virtual ~{{classname}}() {}
+    void init();
+
+    const std::string base = "{{basePathWithoutHost}}";
+
+private:
+    void setupRoutes();
+
+    {{#operation}}
+    void {{operationIdSnakeCase}}_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response);
+    {{/operation}}
+    void {{classnameSnakeLowerCase}}_default_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response);
+
+    std::shared_ptr<Pistache::Rest::Router> router;
+    {{#operation}}
+
+    /// <summary>
+    /// {{summary}}
+    /// </summary>
+    /// <remarks>
+    /// {{notes}}
+    /// </remarks>
+    {{#vendorExtensions.x-codegen-oatpp-is-parsing-supported}}
+    {{#allParams}}
+    /// <param name="{{paramName}}">{{description}}{{^required}} (optional{{#defaultValue}}, default to {{.}}{{/defaultValue}}){{/required}}</param>
+    {{/allParams}}
+    virtual void {{operationIdSnakeCase}}({{#allParams}}const {{{dataType}}} &{{paramName}}{{^-last}}, {{/-last}}{{/allParams}}{{#hasParams}}, {{/hasParams}}Pistache::Http::ResponseWriter &response) = 0;
+    {{/vendorExtensions.x-codegen-oatpp-is-parsing-supported}}
+    {{^vendorExtensions.x-codegen-oatpp-is-parsing-supported}}
+    virtual void {{operationIdSnakeCase}}(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter &response) = 0;
+    {{/vendorExtensions.x-codegen-oatpp-is-parsing-supported}}
+    {{/operation}}
+
+};
+
+{{#apiNamespaceDeclarations}}
+}
+{{/apiNamespaceDeclarations}}
+
+#endif /* {{classname}}_H_ */
+
+{{/operations}}
--- a/modules/openapi-generator/src/main/resources/cpp-oatpp-server/api-impl-header.mustache
+++ b/modules/openapi-generator/src/main/resources/cpp-oatpp-server/api-impl-header.mustache
@ -0,0 +1,55 @@
+{{>licenseInfo}}
+
+{{#operations}}/*
+* {{classname}}Impl.h
+*
+* {{description}}
+*/
+
+#ifndef {{classnameSnakeUpperCase}}_IMPL_H_
+#define {{classnameSnakeUpperCase}}_IMPL_H_
+
+{{{defaultInclude}}}
+#include <pistache/endpoint.h>
+#include <pistache/http.h>
+#include <pistache/router.h>
+#include <memory>
+
+#include <{{classname}}.h>
+
+#include <pistache/optional.h>
+
+{{#imports}}{{{import}}}
+{{/imports}}
+
+{{#apiNamespaceDeclarations}}
+namespace {{this}} {
+{{/apiNamespaceDeclarations}}
+
+{{#hasModelImport}}
+using namespace {{modelNamespace}};{{/hasModelImport}}
+
+class {{classname}}Impl : public {{apiNamespace}}::{{classname}} {
+public:
+    {{classname}}Impl(std::shared_ptr<Pistache::Rest::Router>);
+    ~{{classname}}Impl() {}
+
+    {{#operation}}
+    {{#vendorExtensions.x-codegen-oatpp-is-parsing-supported}}
+    void {{operationIdSnakeCase}}({{#allParams}}const {{{dataType}}} &{{paramName}}{{^-last}}, {{/-last}}{{/allParams}}{{#hasParams}}, {{/hasParams}}Pistache::Http::ResponseWriter &response);
+    {{/vendorExtensions.x-codegen-oatpp-is-parsing-supported}}
+    {{^vendorExtensions.x-codegen-oatpp-is-parsing-supported}}
+    void {{operationIdSnakeCase}}(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter &response);
+    {{/vendorExtensions.x-codegen-oatpp-is-parsing-supported}}
+    {{/operation}}
+
+};
+
+{{#apiNamespaceDeclarations}}
+}
+{{/apiNamespaceDeclarations}}
+
+{{/operations}}
+
+
+#endif
--- a/modules/openapi-generator/src/main/resources/cpp-oatpp-server/api-impl-source.mustache
+++ b/modules/openapi-generator/src/main/resources/cpp-oatpp-server/api-impl-source.mustache
@ -0,0 +1,34 @@
+{{>licenseInfo}}
+{{#operations}}
+
+#include "{{classname}}Impl.h"
+
+{{#apiNamespaceDeclarations}}
+namespace {{this}} {
+{{/apiNamespaceDeclarations}}
+
+{{#hasModelImport}}
+using namespace {{modelNamespace}};{{/hasModelImport}}
+
+{{classname}}Impl::{{classname}}Impl(std::shared_ptr<Pistache::Rest::Router> rtr)
+    : {{classname}}(rtr)
+    { }
+
+{{#operation}}
+{{#vendorExtensions.x-codegen-oatpp-is-parsing-supported}}
+void {{classname}}Impl::{{operationIdSnakeCase}}({{#allParams}}const {{{dataType}}} &{{paramName}}{{^-last}}, {{/-last}}{{/allParams}}{{#hasParams}}, {{/hasParams}}Pistache::Http::ResponseWriter &response) {
+    response.send(Pistache::Http::Code::Ok, "Do some magic\n");
+}
+{{/vendorExtensions.x-codegen-oatpp-is-parsing-supported}}
+{{^vendorExtensions.x-codegen-oatpp-is-parsing-supported}}
+void {{classname}}Impl::{{operationIdSnakeCase}}(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter &response){
+    response.send(Pistache::Http::Code::Ok, "Do some magic\n");
+}
+{{/vendorExtensions.x-codegen-oatpp-is-parsing-supported}}
+{{/operation}}
+
+{{#apiNamespaceDeclarations}}
+}
+{{/apiNamespaceDeclarations}}
+
+{{/operations}}
--- a/modules/openapi-generator/src/main/resources/cpp-oatpp-server/api-source.mustache
+++ b/modules/openapi-generator/src/main/resources/cpp-oatpp-server/api-source.mustache
@ -0,0 +1,111 @@
+{{>licenseInfo}}
+{{#operations}}
+
+#include "{{classname}}.h"
+#include "{{prefix}}Helpers.h"
+
+{{#apiNamespaceDeclarations}}
+namespace {{this}} {
+{{/apiNamespaceDeclarations}}
+
+using namespace {{helpersNamespace}};
+{{#hasModelImport}}
+using namespace {{modelNamespace}};{{/hasModelImport}}
+
+{{classname}}::{{classname}}(std::shared_ptr<Pistache::Rest::Router> rtr) { 
+    router = rtr;
+}
+
+void {{classname}}::init() {
+    setupRoutes();
+}
+
+void {{classname}}::setupRoutes() {
+    using namespace Pistache::Rest;
+
+    {{#operation}}
+    Routes::{{httpMethod}}(*router, base + "{{{vendorExtensions.x-codegen-oatpp-path}}}", Routes::bind(&{{classname}}::{{operationIdSnakeCase}}_handler, this));
+    {{/operation}}
+
+    // Default handler, called when a route is not found
+    router->addCustomHandler(Routes::bind(&{{classname}}::{{classnameSnakeLowerCase}}_default_handler, this));
+}
+
+{{#operation}}
+void {{classname}}::{{operationIdSnakeCase}}_handler(const Pistache::Rest::Request &{{#hasParams}}request{{/hasParams}}, Pistache::Http::ResponseWriter response) {
+    {{#vendorExtensions.x-codegen-oatpp-is-parsing-supported}}
+    {{#hasPathParams}}
+    // Getting the path params
+    {{#pathParams}}
+    auto {{paramName}} = request.param(":{{paramName}}").as<{{dataType}}>();
+    {{/pathParams}}
+    {{/hasPathParams}}{{#hasBodyParam}}
+    // Getting the body param
+    {{#bodyParam}}
+    {{^isPrimitiveType}}{{^isContainer}}
+    {{baseType}} {{paramName}};{{/isContainer}}{{#isArray}}std::vector<{{items.baseType}}> {{paramName}};{{/isArray}}{{#isMap}}std::map<std::string, {{items.baseType}}> {{paramName}};{{/isMap}}{{/isPrimitiveType}}
+    {{#isPrimitiveType}}
+    {{dataType}} {{paramName}};
+    {{/isPrimitiveType}}
+    {{/bodyParam}}
+    {{/hasBodyParam}}{{#hasQueryParams}}
+    // Getting the query params
+    {{#queryParams}}
+    auto {{paramName}}Query = request.query().get("{{baseName}}");
+    Pistache::Optional<{{^isContainer}}{{dataType}}{{/isContainer}}{{#isArray}}std::vector<{{items.baseType}}>{{/isArray}}> {{paramName}};
+    if(!{{paramName}}Query.isEmpty()){
+        {{^isContainer}}{{dataType}}{{/isContainer}}{{#isArray}}std::vector<{{items.baseType}}>{{/isArray}} valueQuery_instance;
+        if(fromStringValue({{paramName}}Query.get(), valueQuery_instance)){
+            {{paramName}} = Pistache::Some(valueQuery_instance);
+        }
+    }
+    {{/queryParams}}
+    {{/hasQueryParams}}{{#hasHeaderParams}}
+    // Getting the header params
+    {{#headerParams}}
+    auto {{paramName}} = request.headers().tryGetRaw("{{baseName}}");
+    {{/headerParams}}
+    {{/hasHeaderParams}}
+
+    try {
+    {{#hasBodyParam}}
+    {{#bodyParam}}
+    {{^isPrimitiveType}}
+      nlohmann::json::parse(request.body()).get_to({{paramName}});
+    {{/isPrimitiveType}}
+    {{#isPrimitiveType}}
+      {{paramName}} = request.body();
+    {{/isPrimitiveType}}
+    {{/bodyParam}}
+    {{/hasBodyParam}}
+      this->{{operationIdSnakeCase}}({{#allParams}}{{paramName}}{{^-last}}, {{/-last}}{{/allParams}}{{#hasParams}}, {{/hasParams}}response);
+    {{/vendorExtensions.x-codegen-oatpp-is-parsing-supported}}
+    {{^vendorExtensions.x-codegen-oatpp-is-parsing-supported}}
+    try {
+      this->{{operationIdSnakeCase}}(request, response);
+    {{/vendorExtensions.x-codegen-oatpp-is-parsing-supported}}
+    } catch (nlohmann::detail::exception &e) {
+        //send a 400 error
+        response.send(Pistache::Http::Code::Bad_Request, e.what());
+        return;
+    } catch (Pistache::Http::HttpError &e) {
+        response.send(static_cast<Pistache::Http::Code>(e.code()), e.what());
+        return;
+    } catch (std::exception &e) {
+        //send a 500 error
+        response.send(Pistache::Http::Code::Internal_Server_Error, e.what());
+        return;
+    }
+
+}
+{{/operation}}
+
+void {{classname}}::{{classnameSnakeLowerCase}}_default_handler(const Pistache::Rest::Request &, Pistache::Http::ResponseWriter response) {
+    response.send(Pistache::Http::Code::Not_Found, "The requested method does not exist");
+}
+
+{{#apiNamespaceDeclarations}}
+}
+{{/apiNamespaceDeclarations}}
+
+{{/operations}}
--- a/modules/openapi-generator/src/main/resources/cpp-oatpp-server/cmake.mustache
+++ b/modules/openapi-generator/src/main/resources/cpp-oatpp-server/cmake.mustache
@ -0,0 +1,39 @@
+cmake_minimum_required (VERSION 3.2)
+
+project(api-server)
+
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14 -pg -g3" )
+
+{{#addExternalLibs}}
+include(ExternalProject)
+
+set(EXTERNAL_INSTALL_LOCATION ${CMAKE_CURRENT_SOURCE_DIR}/external)
+
+ExternalProject_Add(PISTACHE
+    GIT_REPOSITORY https://github.com/oktal/pistache.git
+    CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=${EXTERNAL_INSTALL_LOCATION}
+)
+
+ExternalProject_Add(NLOHMANN
+    GIT_REPOSITORY https://github.com/nlohmann/json.git
+    CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=${EXTERNAL_INSTALL_LOCATION}
+
+)
+include_directories(${EXTERNAL_INSTALL_LOCATION}/include)
+link_directories(${EXTERNAL_INSTALL_LOCATION}/lib)
+{{/addExternalLibs}}
+
+include_directories(model)
+include_directories(api)
+include_directories(impl)
+
+file(GLOB SRCS
+    ${CMAKE_CURRENT_SOURCE_DIR}/api/*.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/impl/*.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/model/*.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/*.cpp
+)
+
+add_executable(${PROJECT_NAME} ${SRCS} )
+{{#addExternalLibs}}add_dependencies(${PROJECT_NAME} PISTACHE NLOHMANN){{/addExternalLibs}}
+target_link_libraries(${PROJECT_NAME} pistache pthread)
--- a/modules/openapi-generator/src/main/resources/cpp-oatpp-server/helpers-header.mustache
+++ b/modules/openapi-generator/src/main/resources/cpp-oatpp-server/helpers-header.mustache
@ -0,0 +1,64 @@
+{{>licenseInfo}}
+/*
+ * {{prefix}}Helpers.h
+ *
+ * This is the helper class for models and primitives
+ */
+
+#ifndef {{prefix}}Helpers_H_
+#define {{prefix}}Helpers_H_
+
+#include <ctime>
+#include <string>
+#include <sstream>
+#include <vector>
+#include <map>
+
+{{#helpersNamespaceDeclarations}}
+namespace {{this}} {
+{{/helpersNamespaceDeclarations}}
+
+    std::string toStringValue(const std::string &value);
+    std::string toStringValue(const int32_t &value);
+    std::string toStringValue(const int64_t &value);
+    std::string toStringValue(const bool &value);
+    std::string toStringValue(const float &value);
+    std::string toStringValue(const double &value);
+
+    bool fromStringValue(const std::string &inStr, std::string &value);
+    bool fromStringValue(const std::string &inStr, int32_t &value);
+    bool fromStringValue(const std::string &inStr, int64_t &value);
+    bool fromStringValue(const std::string &inStr, bool &value);
+    bool fromStringValue(const std::string &inStr, float &value);
+    bool fromStringValue(const std::string &inStr, double &value);
+    template<typename T>
+    bool fromStringValue(const std::vector<std::string> &inStr, std::vector<T> &value){
+        try{
+            for(auto & item : inStr){
+                T itemValue;
+                if(fromStringValue(item, itemValue)){
+                    value.push_back(itemValue);
+                }
+            }
+        }
+        catch(...){
+            return false;
+        }
+        return value.size() > 0;
+    }
+    template<typename T>
+    bool fromStringValue(const std::string &inStr, std::vector<T> &value, char separator = ','){
+        std::vector<std::string> inStrings;
+        std::istringstream f(inStr);
+        std::string s;
+        while (std::getline(f, s, separator)) {
+            inStrings.push_back(s);
+        }
+        return fromStringValue(inStrings, value);
+    }
+
+{{#helpersNamespaceDeclarations}}
+}
+{{/helpersNamespaceDeclarations}}
+
+#endif // {{prefix}}Helpers_H_
--- a/modules/openapi-generator/src/main/resources/cpp-oatpp-server/helpers-source.mustache
+++ b/modules/openapi-generator/src/main/resources/cpp-oatpp-server/helpers-source.mustache
@ -0,0 +1,86 @@
+{{>licenseInfo}}
+#include "{{prefix}}Helpers.h"
+
+{{#helpersNamespaceDeclarations}}
+namespace {{this}} {
+{{/helpersNamespaceDeclarations}}
+
+
+std::string toStringValue(const std::string &value){
+    return std::string(value);
+}
+
+std::string toStringValue(const int32_t &value){
+    return std::to_string(value);
+}
+
+std::string toStringValue(const int64_t &value){
+    return std::to_string(value);
+}
+
+std::string toStringValue(const bool &value){
+    return value?std::string("true"):std::string("false");
+}
+
+std::string toStringValue(const float &value){
+    return std::to_string(value);
+}
+
+std::string toStringValue(const double &value){
+    return std::to_string(value);
+}
+
+bool fromStringValue(const std::string &inStr, std::string &value){
+    value = std::string(inStr);
+    return true;
+}
+
+bool fromStringValue(const std::string &inStr, int32_t &value){
+    try {
+        value = std::stoi( inStr );
+    }
+    catch (const std::invalid_argument&) {
+        return false;
+    }
+    return true;
+}
+
+bool fromStringValue(const std::string &inStr, int64_t &value){
+    try {
+        value = std::stol( inStr );
+    }
+    catch (const std::invalid_argument&) {
+        return false;
+    }
+    return true;
+}
+
+bool fromStringValue(const std::string &inStr, bool &value){
+    bool result = true;
+    inStr == "true"?value = true: inStr == "false"?value = false: result = false;
+    return result;
+}
+
+bool fromStringValue(const std::string &inStr, float &value){
+    try {
+        value = std::stof( inStr );
+    }
+    catch (const std::invalid_argument&) {
+        return false;
+    }
+    return true;
+}
+
+bool fromStringValue(const std::string &inStr, double &value){
+    try {
+        value = std::stod( inStr );
+    }
+    catch (const std::invalid_argument&) {
+        return false;
+    }
+    return true;
+}
+
+{{#helpersNamespaceDeclarations}}
+}
+{{/helpersNamespaceDeclarations}}
--- a/modules/openapi-generator/src/main/resources/cpp-oatpp-server/licenseInfo.mustache
+++ b/modules/openapi-generator/src/main/resources/cpp-oatpp-server/licenseInfo.mustache
@ -0,0 +1,11 @@
+/**
+* {{{appName}}}
+* {{{appDescription}}}
+*
+* {{#version}}The version of the OpenAPI document: {{{version}}}{{/version}}
+* {{#infoEmail}}Contact: {{{infoEmail}}}{{/infoEmail}}
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
--- a/modules/openapi-generator/src/main/resources/cpp-oatpp-server/main-api-server.mustache
+++ b/modules/openapi-generator/src/main/resources/cpp-oatpp-server/main-api-server.mustache
@ -0,0 +1,79 @@
+{{>licenseInfo}}
+
+
+#include "pistache/endpoint.h"
+#include "pistache/http.h"
+#include "pistache/router.h"
+#ifdef __linux__
+#include <vector>
+#include <signal.h>
+#include <unistd.h>
+#endif
+{{#apiInfo}}{{#apis}}{{#operations}}
+#include "{{classname}}Impl.h"{{/operations}}{{/apis}}{{/apiInfo}}
+
+#define PISTACHE_SERVER_THREADS     2
+#define PISTACHE_SERVER_MAX_REQUEST_SIZE 32768
+#define PISTACHE_SERVER_MAX_RESPONSE_SIZE 32768
+
+static Pistache::Http::Endpoint *httpEndpoint;
+#ifdef __linux__
+static void sigHandler [[noreturn]] (int sig){
+    switch(sig){
+        case SIGINT:
+        case SIGQUIT:
+        case SIGTERM:
+        case SIGHUP:
+        default:
+            httpEndpoint->shutdown();
+            break;
+    }
+    exit(0);
+}
+
+static void setUpUnixSignals(std::vector<int> quitSignals) {
+    sigset_t blocking_mask;
+    sigemptyset(&blocking_mask);
+    for (auto sig : quitSignals)
+        sigaddset(&blocking_mask, sig);
+
+    struct sigaction sa;
+    sa.sa_handler = sigHandler;
+    sa.sa_mask    = blocking_mask;
+    sa.sa_flags   = 0;
+
+    for (auto sig : quitSignals)
+        sigaction(sig, &sa, nullptr);
+}
+#endif
+
+using namespace {{apiNamespace}};
+
+int main() {
+#ifdef __linux__
+    std::vector<int> sigs{SIGQUIT, SIGINT, SIGTERM, SIGHUP};
+    setUpUnixSignals(sigs);
+#endif
+    Pistache::Address addr(Pistache::Ipv4::any(), Pistache::Port({{#serverPort}}{{serverPort}}{{/serverPort}}{{^serverPort}}8080{{/serverPort}}));
+
+    httpEndpoint = new Pistache::Http::Endpoint((addr));
+    auto router = std::make_shared<Pistache::Rest::Router>();
+
+    auto opts = Pistache::Http::Endpoint::options()
+        .threads(PISTACHE_SERVER_THREADS);
+    opts.flags(Pistache::Tcp::Options::ReuseAddr);
+    opts.maxRequestSize(PISTACHE_SERVER_MAX_REQUEST_SIZE);
+    opts.maxResponseSize(PISTACHE_SERVER_MAX_RESPONSE_SIZE);
+    httpEndpoint->init(opts);
+
+    {{#apiInfo}}{{#apis}}{{#operations}}
+    {{classname}}Impl {{classname}}server(router);
+    {{classname}}server.init();{{/operations}}{{/apis}}{{/apiInfo}}
+
+    httpEndpoint->setHandler(router->handler());
+    httpEndpoint->serve();
+
+    httpEndpoint->shutdown();
+
+}
+
--- a/modules/openapi-generator/src/main/resources/cpp-oatpp-server/model-header.mustache
+++ b/modules/openapi-generator/src/main/resources/cpp-oatpp-server/model-header.mustache
@ -0,0 +1,60 @@
+{{>licenseInfo}}
+{{#models}}{{#model}}/*
+ * {{classname}}.h
+ *
+ * {{description}}
+ */
+
+#ifndef {{classname}}_H_
+#define {{classname}}_H_
+
+{{{defaultInclude}}}
+{{#imports}}{{{this}}}
+{{/imports}}
+#include <nlohmann/json.hpp>
+
+{{#modelNamespaceDeclarations}}
+namespace {{this}} {
+{{/modelNamespaceDeclarations}}
+
+/// <summary>
+/// {{description}}
+/// </summary>
+class {{declspec}} {{classname}}
+{
+public:
+    {{classname}}();
+    virtual ~{{classname}}();
+
+    void validate();
+
+    /////////////////////////////////////////////
+    /// {{classname}} members
+
+    {{#vars}}
+    /// <summary>
+    /// {{description}}
+    /// </summary>
+    {{{dataType}}}{{#isContainer}}&{{/isContainer}} {{getter}}(){{^isContainer}} const{{/isContainer}};
+    void {{setter}}({{{dataType}}} const{{^isPrimitiveType}}&{{/isPrimitiveType}} value);{{^required}}
+    bool {{nameInCamelCase}}IsSet() const;
+    void unset{{name}}();{{/required}}
+    {{/vars}}
+
+    friend void to_json(nlohmann::json& j, const {{classname}}& o);
+    friend void from_json(const nlohmann::json& j, {{classname}}& o);
+protected:
+    {{#vars}}
+    {{{dataType}}} m_{{name}};
+    {{^required}}
+    bool m_{{name}}IsSet;{{/required}}
+    {{/vars}}
+};
+
+{{#modelNamespaceDeclarations}}
+}
+{{/modelNamespaceDeclarations}}
+
+#endif /* {{classname}}_H_ */
+{{/model}}
+{{/models}}
--- a/modules/openapi-generator/src/main/resources/cpp-oatpp-server/model-source.mustache
+++ b/modules/openapi-generator/src/main/resources/cpp-oatpp-server/model-source.mustache
@ -0,0 +1,73 @@
+{{>licenseInfo}}
+{{#models}}{{#model}}
+
+#include "{{classname}}.h"
+
+{{#modelNamespaceDeclarations}}
+namespace {{this}} {
+{{/modelNamespaceDeclarations}}
+
+{{classname}}::{{classname}}()
+{
+    {{#vars}}{{^isContainer}}{{#isPrimitiveType}}m_{{name}} = {{{defaultValue}}};
+    {{/isPrimitiveType}}{{^isPrimitiveType}}{{#isString}}m_{{name}} = {{{defaultValue}}};
+    {{/isString}}{{#isDateTime}}m_{{name}} = {{{defaultValue}}};
+    {{/isDateTime}}{{/isPrimitiveType}}{{/isContainer}}{{^required}}m_{{name}}IsSet = false;
+    {{/required}}{{/vars}}
+}
+
+{{classname}}::~{{classname}}()
+{
+}
+
+void {{classname}}::validate()
+{
+    // TODO: implement validation
+}
+
+void to_json(nlohmann::json& j, const {{classname}}& o)
+{
+    j = nlohmann::json();
+    {{#vars}}
+    {{#required}}j["{{baseName}}"] = o.m_{{name}};{{/required}}{{^required}}if(o.{{nameInCamelCase}}IsSet(){{#isContainer}} || !o.m_{{name}}.empty(){{/isContainer}})
+        j["{{baseName}}"] = o.m_{{name}};{{/required}}
+    {{/vars}}
+}
+
+void from_json(const nlohmann::json& j, {{classname}}& o)
+{
+    {{#vars}}
+    {{#required}}j.at("{{baseName}}").get_to(o.m_{{name}});{{/required}}{{^required}}if(j.find("{{baseName}}") != j.end())
+    {
+        j.at("{{baseName}}").get_to(o.m_{{name}});
+        o.m_{{name}}IsSet = true;
+    } {{/required}}
+    {{/vars}}
+}
+
+{{#vars}}{{{dataType}}}{{#isContainer}}&{{/isContainer}} {{classname}}::{{getter}}(){{^isContainer}} const{{/isContainer}}
+{
+    return m_{{name}};
+}
+void {{classname}}::{{setter}}({{{dataType}}} const{{^isPrimitiveType}}&{{/isPrimitiveType}} value)
+{
+    m_{{name}} = value;{{^required}}
+    m_{{name}}IsSet = true;{{/required}}
+}
+{{^required}}bool {{classname}}::{{nameInCamelCase}}IsSet() const
+{
+    return m_{{name}}IsSet;
+}
+void {{classname}}::unset{{name}}()
+{
+    m_{{name}}IsSet = false;
+}
+{{/required}}
+{{/vars}}
+
+{{#modelNamespaceDeclarations}}
+}
+{{/modelNamespaceDeclarations}}
+
+{{/model}}
+{{/models}}
--- a/modules/openapi-generator/src/main/resources/cpp-oatpp-server/model-struct-header.mustache
+++ b/modules/openapi-generator/src/main/resources/cpp-oatpp-server/model-struct-header.mustache
@ -0,0 +1,43 @@
+{{>licenseInfo}}
+{{#models}}{{#model}}/*
+ * {{classname}}.h
+ *
+ * {{description}}
+ */
+
+#ifndef {{classname}}_H_
+#define {{classname}}_H_
+
+{{{defaultInclude}}}
+{{#imports}}{{{this}}}
+{{/imports}}
+#include <nlohmann/json.hpp>
+{{#hasOptional}}#include <pistache/optional.h>{{/hasOptional}}
+
+{{#modelNamespaceDeclarations}}
+namespace {{this}} {
+{{/modelNamespaceDeclarations}}
+
+struct {{classname}}
+{
+    {{#vars}}
+    {{^required}}Pistache::Optional<{{/required}}{{{dataType}}}{{^required}}>{{/required}} {{name}};
+    {{/vars}}
+
+    bool operator==(const {{classname}}& other) const;
+    bool operator!=(const {{classname}}& other) const;
+
+    nlohmann::json to_json() const;
+    static {{classname}} from_json(const nlohmann::json& j);
+};
+
+void to_json(nlohmann::json& j, const {{classname}}& o);
+void from_json(const nlohmann::json& j, {{classname}}& o);
+
+{{#modelNamespaceDeclarations}}
+} // {{this}}
+{{/modelNamespaceDeclarations}}
+
+#endif /* {{classname}}_H_ */
+{{/model}}
+{{/models}}
--- a/modules/openapi-generator/src/main/resources/cpp-oatpp-server/model-struct-source.mustache
+++ b/modules/openapi-generator/src/main/resources/cpp-oatpp-server/model-struct-source.mustache
@ -0,0 +1,59 @@
+{{>licenseInfo}}
+{{#models}}{{#model}}
+
+#include "{{classname}}.h"
+
+{{#modelNamespaceDeclarations}}
+namespace {{this}} {
+{{/modelNamespaceDeclarations}}
+
+nlohmann::json {{classname}}::to_json() const
+{
+    nlohmann::json j;
+    {{#modelNamespaceDeclarations}}::{{this}}{{/modelNamespaceDeclarations}}::to_json(j, *this);
+    return j;
+}
+
+{{classname}} {{classname}}::from_json(const nlohmann::json& j)
+{
+    {{classname}} o{};
+    {{#modelNamespaceDeclarations}}::{{this}}{{/modelNamespaceDeclarations}}::from_json(j, o);
+    return o;
+}
+
+bool {{classname}}::operator==(const {{classname}}& other) const
+{
+    return {{#vars}}{{name}} == other.{{name}}{{^-last}} && {{/-last}}{{/vars}};
+}
+
+bool {{classname}}::operator!=(const {{classname}}& other) const
+{
+    return !(*this == other);
+}
+
+void to_json(nlohmann::json& j, const {{classname}}& o)
+{
+    {{#vars}}
+    {{^required}}if (!o.{{name}}.isEmpty()){{/required}}
+        j["{{baseName}}"] = o.{{name}}{{^required}}.get(){{/required}};
+    {{/vars}}
+}
+
+void from_json(const nlohmann::json& j, {{classname}}& o)
+{
+    {{#vars}}
+    {{#required}}j.at("{{baseName}}").get_to(o.{{name}});{{/required}}
+    {{^required}}if (j.find("{{baseName}}") != j.end()) {
+        {{{dataType}}} temporary_{{name}};
+        j.at("{{baseName}}").get_to(temporary_{{name}});
+        o.{{name}} = Pistache::Some(temporary_{{name}});
+    }{{/required}}
+    {{/vars}}
+}
+
+{{#modelNamespaceDeclarations}}
+} // {{this}}
+{{/modelNamespaceDeclarations}}
+
+{{/model}}
+{{/models}}
--- a/samples/server/petstore/cpp-oatpp/.openapi-generator-ignore
+++ b/samples/server/petstore/cpp-oatpp/.openapi-generator-ignore
@ -0,0 +1,23 @@
+# OpenAPI Generator Ignore
+# Generated by openapi-generator https://github.com/openapitools/openapi-generator
+
+# Use this file to prevent files from being overwritten by the generator.
+# The patterns follow closely to .gitignore or .dockerignore.
+
+# As an example, the C# client generator defines ApiClient.cs.
+# You can make changes and tell OpenAPI Generator to ignore just this file by uncommenting the following line:
+#ApiClient.cs
+
+# You can match any string of characters against a directory, file or extension with a single asterisk (*):
+#foo/*/qux
+# The above matches foo/bar/qux and foo/baz/qux, but not foo/bar/baz/qux
+
+# You can recursively match patterns against a directory, file or extension with a double asterisk (**):
+#foo/**/qux
+# This matches foo/bar/qux, foo/baz/qux, and foo/bar/baz/qux
+
+# You can also negate patterns with an exclamation (!).
+# For example, you can ignore all files in a docs folder with the file extension .md:
+#docs/*.md
+# Then explicitly reverse the ignore rule for a single file:
+#!docs/README.md
--- a/samples/server/petstore/cpp-oatpp/.openapi-generator/FILES
+++ b/samples/server/petstore/cpp-oatpp/.openapi-generator/FILES
@ -0,0 +1,33 @@
+CMakeLists.txt
+README.md
+api/PetApi.cpp
+api/PetApi.h
+api/StoreApi.cpp
+api/StoreApi.h
+api/UserApi.cpp
+api/UserApi.h
+impl/PetApiImpl.cpp
+impl/PetApiImpl.h
+impl/StoreApiImpl.cpp
+impl/StoreApiImpl.h
+impl/UserApiImpl.cpp
+impl/UserApiImpl.h
+main-api-server.cpp
+model/ApiResponse.cpp
+model/ApiResponse.h
+model/Category.cpp
+model/Category.h
+model/Helpers.cpp
+model/Helpers.h
+model/Inline_object.cpp
+model/Inline_object.h
+model/Inline_object_1.cpp
+model/Inline_object_1.h
+model/Order.cpp
+model/Order.h
+model/Pet.cpp
+model/Pet.h
+model/Tag.cpp
+model/Tag.h
+model/User.cpp
+model/User.h
--- a/samples/server/petstore/cpp-oatpp/.openapi-generator/VERSION
+++ b/samples/server/petstore/cpp-oatpp/.openapi-generator/VERSION
@ -0,0 +1 @@
+5.0.0-SNAPSHOT
--- a/samples/server/petstore/cpp-oatpp/CMakeLists.txt
+++ b/samples/server/petstore/cpp-oatpp/CMakeLists.txt
@ -0,0 +1,37 @@
+cmake_minimum_required (VERSION 3.2)
+
+project(api-server)
+
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14 -pg -g3" )
+
+include(ExternalProject)
+
+set(EXTERNAL_INSTALL_LOCATION ${CMAKE_CURRENT_SOURCE_DIR}/external)
+
+ExternalProject_Add(PISTACHE
+    GIT_REPOSITORY https://github.com/oktal/pistache.git
+    CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=${EXTERNAL_INSTALL_LOCATION}
+)
+
+ExternalProject_Add(NLOHMANN
+    GIT_REPOSITORY https://github.com/nlohmann/json.git
+    CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=${EXTERNAL_INSTALL_LOCATION}
+
+)
+include_directories(${EXTERNAL_INSTALL_LOCATION}/include)
+link_directories(${EXTERNAL_INSTALL_LOCATION}/lib)
+
+include_directories(model)
+include_directories(api)
+include_directories(impl)
+
+file(GLOB SRCS
+    ${CMAKE_CURRENT_SOURCE_DIR}/api/*.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/impl/*.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/model/*.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/*.cpp
+)
+
+add_executable(${PROJECT_NAME} ${SRCS} )
+add_dependencies(${PROJECT_NAME} PISTACHE NLOHMANN)
+target_link_libraries(${PROJECT_NAME} pistache pthread)
--- a/samples/server/petstore/cpp-oatpp/README.md
+++ b/samples/server/petstore/cpp-oatpp/README.md
@ -0,0 +1,48 @@
+# REST API Server for OpenAPI Petstore
+
+## Overview
+This API Server was generated by the [OpenAPI Generator](https://openapi-generator.tech) project.
+It uses the [Oat++](https://github.com/oatpp/oatpp) Framework.
+
+## Files organization
+The Oat++ C++ REST server generator creates three folders:
+- `api`: This folder contains the handlers for each method specified in the OpenAPI definition. Every handler extracts
+the path and body parameters (if any) from the requests and tries to parse and possibly validate them.
+Once this step is completed, the main API class calls the corresponding abstract method that should be implemented
+by the developer (a basic implementation is provided under the `impl` folder)
+- `impl`: As written above, the implementation folder contains, for each API, the corresponding implementation class,
+which extends the main API class and implements the abstract methods.
+Every method receives the path and body parameters as constant reference variables and a reference to the response
+object, that should be filled with the right response and sent at the end of the method with the command:
+response.send(returnCode, responseBody, [mimeType])
+- `model`: This folder contains the corresponding class for every object schema found in the OpenAPI specification.
+
+The main folder contains also a file with a main that can be used to start the server.
+Of course, is you should customize this file based on your needs
+
+## Installation
+First of all, you need to download and install the libraries listed [here](#libraries-required).
+
+Once the libraries are installed, in order to compile and run the server please follow the steps below:
+```bash
+mkdir build
+cd build
+cmake ..
+make
+```
+
+Once compiled run the server:
+
+```bash
+cd build
+./api-server
+```
+
+## Libraries required
+- [Oat++](http://github.com/oatpp/oatpp)
+- [JSON for Modern C++](https://github.com/nlohmann/json/#integration): Please download the `json.hpp` file and
+put it under the model/nlohmann folder
+
+## Namespaces
+org.openapitools.server.api
+org.openapitools.server.model
--- a/samples/server/petstore/cpp-oatpp/api/PetApi.cpp
+++ b/samples/server/petstore/cpp-oatpp/api/PetApi.cpp
@ -0,0 +1,236 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+
+#include "PetApi.h"
+#include "Helpers.h"
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace api {
+
+using namespace org::openapitools::server::helpers;
+using namespace org::openapitools::server::model;
+
+PetApi::PetApi(std::shared_ptr<Pistache::Rest::Router> rtr) { 
+    router = rtr;
+}
+
+void PetApi::init() {
+    setupRoutes();
+}
+
+void PetApi::setupRoutes() {
+    using namespace Pistache::Rest;
+
+    Routes::Post(*router, base + "/pet", Routes::bind(&PetApi::add_pet_handler, this));
+    Routes::Delete(*router, base + "/pet/:petId", Routes::bind(&PetApi::delete_pet_handler, this));
+    Routes::Get(*router, base + "/pet/findByStatus", Routes::bind(&PetApi::find_pets_by_status_handler, this));
+    Routes::Get(*router, base + "/pet/findByTags", Routes::bind(&PetApi::find_pets_by_tags_handler, this));
+    Routes::Get(*router, base + "/pet/:petId", Routes::bind(&PetApi::get_pet_by_id_handler, this));
+    Routes::Put(*router, base + "/pet", Routes::bind(&PetApi::update_pet_handler, this));
+    Routes::Post(*router, base + "/pet/:petId", Routes::bind(&PetApi::update_pet_with_form_handler, this));
+    Routes::Post(*router, base + "/pet/:petId/uploadImage", Routes::bind(&PetApi::upload_file_handler, this));
+
+    // Default handler, called when a route is not found
+    router->addCustomHandler(Routes::bind(&PetApi::pet_api_default_handler, this));
+}
+
+void PetApi::add_pet_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response) {
+
+    // Getting the body param
+    
+    Pet pet;
+    
+    try {
+      nlohmann::json::parse(request.body()).get_to(pet);
+      this->add_pet(pet, response);
+    } catch (nlohmann::detail::exception &e) {
+        //send a 400 error
+        response.send(Pistache::Http::Code::Bad_Request, e.what());
+        return;
+    } catch (Pistache::Http::HttpError &e) {
+        response.send(static_cast<Pistache::Http::Code>(e.code()), e.what());
+        return;
+    } catch (std::exception &e) {
+        //send a 500 error
+        response.send(Pistache::Http::Code::Internal_Server_Error, e.what());
+        return;
+    }
+
+}
+void PetApi::delete_pet_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response) {
+    // Getting the path params
+    auto petId = request.param(":petId").as<int64_t>();
+    
+    // Getting the header params
+    auto apiKey = request.headers().tryGetRaw("api_key");
+
+    try {
+      this->delete_pet(petId, apiKey, response);
+    } catch (nlohmann::detail::exception &e) {
+        //send a 400 error
+        response.send(Pistache::Http::Code::Bad_Request, e.what());
+        return;
+    } catch (Pistache::Http::HttpError &e) {
+        response.send(static_cast<Pistache::Http::Code>(e.code()), e.what());
+        return;
+    } catch (std::exception &e) {
+        //send a 500 error
+        response.send(Pistache::Http::Code::Internal_Server_Error, e.what());
+        return;
+    }
+
+}
+void PetApi::find_pets_by_status_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response) {
+
+    // Getting the query params
+    auto statusQuery = request.query().get("status");
+    Pistache::Optional<std::vector<std::string>> status;
+    if(!statusQuery.isEmpty()){
+        std::vector<std::string> valueQuery_instance;
+        if(fromStringValue(statusQuery.get(), valueQuery_instance)){
+            status = Pistache::Some(valueQuery_instance);
+        }
+    }
+    
+    try {
+      this->find_pets_by_status(status, response);
+    } catch (nlohmann::detail::exception &e) {
+        //send a 400 error
+        response.send(Pistache::Http::Code::Bad_Request, e.what());
+        return;
+    } catch (Pistache::Http::HttpError &e) {
+        response.send(static_cast<Pistache::Http::Code>(e.code()), e.what());
+        return;
+    } catch (std::exception &e) {
+        //send a 500 error
+        response.send(Pistache::Http::Code::Internal_Server_Error, e.what());
+        return;
+    }
+
+}
+void PetApi::find_pets_by_tags_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response) {
+
+    // Getting the query params
+    auto tagsQuery = request.query().get("tags");
+    Pistache::Optional<std::vector<std::string>> tags;
+    if(!tagsQuery.isEmpty()){
+        std::vector<std::string> valueQuery_instance;
+        if(fromStringValue(tagsQuery.get(), valueQuery_instance)){
+            tags = Pistache::Some(valueQuery_instance);
+        }
+    }
+    
+    try {
+      this->find_pets_by_tags(tags, response);
+    } catch (nlohmann::detail::exception &e) {
+        //send a 400 error
+        response.send(Pistache::Http::Code::Bad_Request, e.what());
+        return;
+    } catch (Pistache::Http::HttpError &e) {
+        response.send(static_cast<Pistache::Http::Code>(e.code()), e.what());
+        return;
+    } catch (std::exception &e) {
+        //send a 500 error
+        response.send(Pistache::Http::Code::Internal_Server_Error, e.what());
+        return;
+    }
+
+}
+void PetApi::get_pet_by_id_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response) {
+    // Getting the path params
+    auto petId = request.param(":petId").as<int64_t>();
+    
+    try {
+      this->get_pet_by_id(petId, response);
+    } catch (nlohmann::detail::exception &e) {
+        //send a 400 error
+        response.send(Pistache::Http::Code::Bad_Request, e.what());
+        return;
+    } catch (Pistache::Http::HttpError &e) {
+        response.send(static_cast<Pistache::Http::Code>(e.code()), e.what());
+        return;
+    } catch (std::exception &e) {
+        //send a 500 error
+        response.send(Pistache::Http::Code::Internal_Server_Error, e.what());
+        return;
+    }
+
+}
+void PetApi::update_pet_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response) {
+
+    // Getting the body param
+    
+    Pet pet;
+    
+    try {
+      nlohmann::json::parse(request.body()).get_to(pet);
+      this->update_pet(pet, response);
+    } catch (nlohmann::detail::exception &e) {
+        //send a 400 error
+        response.send(Pistache::Http::Code::Bad_Request, e.what());
+        return;
+    } catch (Pistache::Http::HttpError &e) {
+        response.send(static_cast<Pistache::Http::Code>(e.code()), e.what());
+        return;
+    } catch (std::exception &e) {
+        //send a 500 error
+        response.send(Pistache::Http::Code::Internal_Server_Error, e.what());
+        return;
+    }
+
+}
+void PetApi::update_pet_with_form_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response) {
+    try {
+      this->update_pet_with_form(request, response);
+    } catch (nlohmann::detail::exception &e) {
+        //send a 400 error
+        response.send(Pistache::Http::Code::Bad_Request, e.what());
+        return;
+    } catch (Pistache::Http::HttpError &e) {
+        response.send(static_cast<Pistache::Http::Code>(e.code()), e.what());
+        return;
+    } catch (std::exception &e) {
+        //send a 500 error
+        response.send(Pistache::Http::Code::Internal_Server_Error, e.what());
+        return;
+    }
+
+}
+void PetApi::upload_file_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response) {
+    try {
+      this->upload_file(request, response);
+    } catch (nlohmann::detail::exception &e) {
+        //send a 400 error
+        response.send(Pistache::Http::Code::Bad_Request, e.what());
+        return;
+    } catch (Pistache::Http::HttpError &e) {
+        response.send(static_cast<Pistache::Http::Code>(e.code()), e.what());
+        return;
+    } catch (std::exception &e) {
+        //send a 500 error
+        response.send(Pistache::Http::Code::Internal_Server_Error, e.what());
+        return;
+    }
+
+}
+
+void PetApi::pet_api_default_handler(const Pistache::Rest::Request &, Pistache::Http::ResponseWriter response) {
+    response.send(Pistache::Http::Code::Not_Found, "The requested method does not exist");
+}
+
+}
+}
+}
+}
+
--- a/samples/server/petstore/cpp-oatpp/api/PetApi.h
+++ b/samples/server/petstore/cpp-oatpp/api/PetApi.h
@ -0,0 +1,141 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+/*
+ * PetApi.h
+ *
+ * 
+ */
+
+#ifndef PetApi_H_
+#define PetApi_H_
+
+
+#include <pistache/http.h>
+#include <pistache/router.h>
+#include <pistache/http_headers.h>
+#include <pistache/optional.h>
+
+
+#include "ApiResponse.h"
+#include "Pet.h"
+#include <string>
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace api {
+
+using namespace org::openapitools::server::model;
+
+class  PetApi {
+public:
+    PetApi(std::shared_ptr<Pistache::Rest::Router>);
+    virtual ~PetApi() {}
+    void init();
+
+    const std::string base = "/v2";
+
+private:
+    void setupRoutes();
+
+    void add_pet_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response);
+    void delete_pet_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response);
+    void find_pets_by_status_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response);
+    void find_pets_by_tags_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response);
+    void get_pet_by_id_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response);
+    void update_pet_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response);
+    void update_pet_with_form_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response);
+    void upload_file_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response);
+    void pet_api_default_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response);
+
+    std::shared_ptr<Pistache::Rest::Router> router;
+
+    /// <summary>
+    /// Add a new pet to the store
+    /// </summary>
+    /// <remarks>
+    /// 
+    /// </remarks>
+    /// <param name="pet">Pet object that needs to be added to the store</param>
+    virtual void add_pet(const Pet &pet, Pistache::Http::ResponseWriter &response) = 0;
+
+    /// <summary>
+    /// Deletes a pet
+    /// </summary>
+    /// <remarks>
+    /// 
+    /// </remarks>
+    /// <param name="petId">Pet id to delete</param>
+    /// <param name="apiKey"> (optional, default to &quot;&quot;)</param>
+    virtual void delete_pet(const int64_t &petId, const Oatpp::Optional<Oatpp::Http::Header::Raw> &apiKey, Pistache::Http::ResponseWriter &response) = 0;
+
+    /// <summary>
+    /// Finds Pets by status
+    /// </summary>
+    /// <remarks>
+    /// Multiple status values can be provided with comma separated strings
+    /// </remarks>
+    /// <param name="status">Status values that need to be considered for filter</param>
+    virtual void find_pets_by_status(const Oatpp::Optional<std::vector<std::string>> &status, Pistache::Http::ResponseWriter &response) = 0;
+
+    /// <summary>
+    /// Finds Pets by tags
+    /// </summary>
+    /// <remarks>
+    /// Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
+    /// </remarks>
+    /// <param name="tags">Tags to filter by</param>
+    virtual void find_pets_by_tags(const Oatpp::Optional<std::vector<std::string>> &tags, Pistache::Http::ResponseWriter &response) = 0;
+
+    /// <summary>
+    /// Find pet by ID
+    /// </summary>
+    /// <remarks>
+    /// Returns a single pet
+    /// </remarks>
+    /// <param name="petId">ID of pet to return</param>
+    virtual void get_pet_by_id(const int64_t &petId, Pistache::Http::ResponseWriter &response) = 0;
+
+    /// <summary>
+    /// Update an existing pet
+    /// </summary>
+    /// <remarks>
+    /// 
+    /// </remarks>
+    /// <param name="pet">Pet object that needs to be added to the store</param>
+    virtual void update_pet(const Pet &pet, Pistache::Http::ResponseWriter &response) = 0;
+
+    /// <summary>
+    /// Updates a pet in the store with form data
+    /// </summary>
+    /// <remarks>
+    /// 
+    /// </remarks>
+    virtual void update_pet_with_form(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter &response) = 0;
+
+    /// <summary>
+    /// uploads an image
+    /// </summary>
+    /// <remarks>
+    /// 
+    /// </remarks>
+    virtual void upload_file(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter &response) = 0;
+
+};
+
+}
+}
+}
+}
+
+#endif /* PetApi_H_ */
+
--- a/samples/server/petstore/cpp-oatpp/api/StoreApi.cpp
+++ b/samples/server/petstore/cpp-oatpp/api/StoreApi.cpp
@ -0,0 +1,134 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+
+#include "StoreApi.h"
+#include "Helpers.h"
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace api {
+
+using namespace org::openapitools::server::helpers;
+using namespace org::openapitools::server::model;
+
+StoreApi::StoreApi(std::shared_ptr<Pistache::Rest::Router> rtr) { 
+    router = rtr;
+}
+
+void StoreApi::init() {
+    setupRoutes();
+}
+
+void StoreApi::setupRoutes() {
+    using namespace Pistache::Rest;
+
+    Routes::Delete(*router, base + "/store/order/:orderId", Routes::bind(&StoreApi::delete_order_handler, this));
+    Routes::Get(*router, base + "/store/inventory", Routes::bind(&StoreApi::get_inventory_handler, this));
+    Routes::Get(*router, base + "/store/order/:orderId", Routes::bind(&StoreApi::get_order_by_id_handler, this));
+    Routes::Post(*router, base + "/store/order", Routes::bind(&StoreApi::place_order_handler, this));
+
+    // Default handler, called when a route is not found
+    router->addCustomHandler(Routes::bind(&StoreApi::store_api_default_handler, this));
+}
+
+void StoreApi::delete_order_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response) {
+    // Getting the path params
+    auto orderId = request.param(":orderId").as<std::string>();
+    
+    try {
+      this->delete_order(orderId, response);
+    } catch (nlohmann::detail::exception &e) {
+        //send a 400 error
+        response.send(Pistache::Http::Code::Bad_Request, e.what());
+        return;
+    } catch (Pistache::Http::HttpError &e) {
+        response.send(static_cast<Pistache::Http::Code>(e.code()), e.what());
+        return;
+    } catch (std::exception &e) {
+        //send a 500 error
+        response.send(Pistache::Http::Code::Internal_Server_Error, e.what());
+        return;
+    }
+
+}
+void StoreApi::get_inventory_handler(const Pistache::Rest::Request &, Pistache::Http::ResponseWriter response) {
+
+    try {
+      this->get_inventory(response);
+    } catch (nlohmann::detail::exception &e) {
+        //send a 400 error
+        response.send(Pistache::Http::Code::Bad_Request, e.what());
+        return;
+    } catch (Pistache::Http::HttpError &e) {
+        response.send(static_cast<Pistache::Http::Code>(e.code()), e.what());
+        return;
+    } catch (std::exception &e) {
+        //send a 500 error
+        response.send(Pistache::Http::Code::Internal_Server_Error, e.what());
+        return;
+    }
+
+}
+void StoreApi::get_order_by_id_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response) {
+    // Getting the path params
+    auto orderId = request.param(":orderId").as<int64_t>();
+    
+    try {
+      this->get_order_by_id(orderId, response);
+    } catch (nlohmann::detail::exception &e) {
+        //send a 400 error
+        response.send(Pistache::Http::Code::Bad_Request, e.what());
+        return;
+    } catch (Pistache::Http::HttpError &e) {
+        response.send(static_cast<Pistache::Http::Code>(e.code()), e.what());
+        return;
+    } catch (std::exception &e) {
+        //send a 500 error
+        response.send(Pistache::Http::Code::Internal_Server_Error, e.what());
+        return;
+    }
+
+}
+void StoreApi::place_order_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response) {
+
+    // Getting the body param
+    
+    Order order;
+    
+    try {
+      nlohmann::json::parse(request.body()).get_to(order);
+      this->place_order(order, response);
+    } catch (nlohmann::detail::exception &e) {
+        //send a 400 error
+        response.send(Pistache::Http::Code::Bad_Request, e.what());
+        return;
+    } catch (Pistache::Http::HttpError &e) {
+        response.send(static_cast<Pistache::Http::Code>(e.code()), e.what());
+        return;
+    } catch (std::exception &e) {
+        //send a 500 error
+        response.send(Pistache::Http::Code::Internal_Server_Error, e.what());
+        return;
+    }
+
+}
+
+void StoreApi::store_api_default_handler(const Pistache::Rest::Request &, Pistache::Http::ResponseWriter response) {
+    response.send(Pistache::Http::Code::Not_Found, "The requested method does not exist");
+}
+
+}
+}
+}
+}
+
--- a/samples/server/petstore/cpp-oatpp/api/StoreApi.h
+++ b/samples/server/petstore/cpp-oatpp/api/StoreApi.h
@ -0,0 +1,101 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+/*
+ * StoreApi.h
+ *
+ * 
+ */
+
+#ifndef StoreApi_H_
+#define StoreApi_H_
+
+
+#include <pistache/http.h>
+#include <pistache/router.h>
+#include <pistache/http_headers.h>
+#include <pistache/optional.h>
+
+
+#include "Order.h"
+#include <map>
+#include <string>
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace api {
+
+using namespace org::openapitools::server::model;
+
+class  StoreApi {
+public:
+    StoreApi(std::shared_ptr<Pistache::Rest::Router>);
+    virtual ~StoreApi() {}
+    void init();
+
+    const std::string base = "/v2";
+
+private:
+    void setupRoutes();
+
+    void delete_order_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response);
+    void get_inventory_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response);
+    void get_order_by_id_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response);
+    void place_order_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response);
+    void store_api_default_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response);
+
+    std::shared_ptr<Pistache::Rest::Router> router;
+
+    /// <summary>
+    /// Delete purchase order by ID
+    /// </summary>
+    /// <remarks>
+    /// For valid response try integer IDs with value &lt; 1000. Anything above 1000 or nonintegers will generate API errors
+    /// </remarks>
+    /// <param name="orderId">ID of the order that needs to be deleted</param>
+    virtual void delete_order(const std::string &orderId, Pistache::Http::ResponseWriter &response) = 0;
+
+    /// <summary>
+    /// Returns pet inventories by status
+    /// </summary>
+    /// <remarks>
+    /// Returns a map of status codes to quantities
+    /// </remarks>
+    virtual void get_inventory(Pistache::Http::ResponseWriter &response) = 0;
+
+    /// <summary>
+    /// Find purchase order by ID
+    /// </summary>
+    /// <remarks>
+    /// For valid response try integer IDs with value &lt;&#x3D; 5 or &gt; 10. Other values will generated exceptions
+    /// </remarks>
+    /// <param name="orderId">ID of pet that needs to be fetched</param>
+    virtual void get_order_by_id(const int64_t &orderId, Pistache::Http::ResponseWriter &response) = 0;
+
+    /// <summary>
+    /// Place an order for a pet
+    /// </summary>
+    /// <remarks>
+    /// 
+    /// </remarks>
+    /// <param name="order">order placed for purchasing the pet</param>
+    virtual void place_order(const Order &order, Pistache::Http::ResponseWriter &response) = 0;
+
+};
+
+}
+}
+}
+}
+
+#endif /* StoreApi_H_ */
+
--- a/samples/server/petstore/cpp-oatpp/api/UserApi.cpp
+++ b/samples/server/petstore/cpp-oatpp/api/UserApi.cpp
@ -0,0 +1,243 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+
+#include "UserApi.h"
+#include "Helpers.h"
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace api {
+
+using namespace org::openapitools::server::helpers;
+using namespace org::openapitools::server::model;
+
+UserApi::UserApi(std::shared_ptr<Pistache::Rest::Router> rtr) { 
+    router = rtr;
+}
+
+void UserApi::init() {
+    setupRoutes();
+}
+
+void UserApi::setupRoutes() {
+    using namespace Pistache::Rest;
+
+    Routes::Post(*router, base + "/user", Routes::bind(&UserApi::create_user_handler, this));
+    Routes::Post(*router, base + "/user/createWithArray", Routes::bind(&UserApi::create_users_with_array_input_handler, this));
+    Routes::Post(*router, base + "/user/createWithList", Routes::bind(&UserApi::create_users_with_list_input_handler, this));
+    Routes::Delete(*router, base + "/user/:username", Routes::bind(&UserApi::delete_user_handler, this));
+    Routes::Get(*router, base + "/user/:username", Routes::bind(&UserApi::get_user_by_name_handler, this));
+    Routes::Get(*router, base + "/user/login", Routes::bind(&UserApi::login_user_handler, this));
+    Routes::Get(*router, base + "/user/logout", Routes::bind(&UserApi::logout_user_handler, this));
+    Routes::Put(*router, base + "/user/:username", Routes::bind(&UserApi::update_user_handler, this));
+
+    // Default handler, called when a route is not found
+    router->addCustomHandler(Routes::bind(&UserApi::user_api_default_handler, this));
+}
+
+void UserApi::create_user_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response) {
+
+    // Getting the body param
+    
+    User user;
+    
+    try {
+      nlohmann::json::parse(request.body()).get_to(user);
+      this->create_user(user, response);
+    } catch (nlohmann::detail::exception &e) {
+        //send a 400 error
+        response.send(Pistache::Http::Code::Bad_Request, e.what());
+        return;
+    } catch (Pistache::Http::HttpError &e) {
+        response.send(static_cast<Pistache::Http::Code>(e.code()), e.what());
+        return;
+    } catch (std::exception &e) {
+        //send a 500 error
+        response.send(Pistache::Http::Code::Internal_Server_Error, e.what());
+        return;
+    }
+
+}
+void UserApi::create_users_with_array_input_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response) {
+
+    // Getting the body param
+    std::vector<User> user;
+    
+    try {
+      nlohmann::json::parse(request.body()).get_to(user);
+      this->create_users_with_array_input(user, response);
+    } catch (nlohmann::detail::exception &e) {
+        //send a 400 error
+        response.send(Pistache::Http::Code::Bad_Request, e.what());
+        return;
+    } catch (Pistache::Http::HttpError &e) {
+        response.send(static_cast<Pistache::Http::Code>(e.code()), e.what());
+        return;
+    } catch (std::exception &e) {
+        //send a 500 error
+        response.send(Pistache::Http::Code::Internal_Server_Error, e.what());
+        return;
+    }
+
+}
+void UserApi::create_users_with_list_input_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response) {
+
+    // Getting the body param
+    std::vector<User> user;
+    
+    try {
+      nlohmann::json::parse(request.body()).get_to(user);
+      this->create_users_with_list_input(user, response);
+    } catch (nlohmann::detail::exception &e) {
+        //send a 400 error
+        response.send(Pistache::Http::Code::Bad_Request, e.what());
+        return;
+    } catch (Pistache::Http::HttpError &e) {
+        response.send(static_cast<Pistache::Http::Code>(e.code()), e.what());
+        return;
+    } catch (std::exception &e) {
+        //send a 500 error
+        response.send(Pistache::Http::Code::Internal_Server_Error, e.what());
+        return;
+    }
+
+}
+void UserApi::delete_user_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response) {
+    // Getting the path params
+    auto username = request.param(":username").as<std::string>();
+    
+    try {
+      this->delete_user(username, response);
+    } catch (nlohmann::detail::exception &e) {
+        //send a 400 error
+        response.send(Pistache::Http::Code::Bad_Request, e.what());
+        return;
+    } catch (Pistache::Http::HttpError &e) {
+        response.send(static_cast<Pistache::Http::Code>(e.code()), e.what());
+        return;
+    } catch (std::exception &e) {
+        //send a 500 error
+        response.send(Pistache::Http::Code::Internal_Server_Error, e.what());
+        return;
+    }
+
+}
+void UserApi::get_user_by_name_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response) {
+    // Getting the path params
+    auto username = request.param(":username").as<std::string>();
+    
+    try {
+      this->get_user_by_name(username, response);
+    } catch (nlohmann::detail::exception &e) {
+        //send a 400 error
+        response.send(Pistache::Http::Code::Bad_Request, e.what());
+        return;
+    } catch (Pistache::Http::HttpError &e) {
+        response.send(static_cast<Pistache::Http::Code>(e.code()), e.what());
+        return;
+    } catch (std::exception &e) {
+        //send a 500 error
+        response.send(Pistache::Http::Code::Internal_Server_Error, e.what());
+        return;
+    }
+
+}
+void UserApi::login_user_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response) {
+
+    // Getting the query params
+    auto usernameQuery = request.query().get("username");
+    Pistache::Optional<std::string> username;
+    if(!usernameQuery.isEmpty()){
+        std::string valueQuery_instance;
+        if(fromStringValue(usernameQuery.get(), valueQuery_instance)){
+            username = Pistache::Some(valueQuery_instance);
+        }
+    }
+    auto passwordQuery = request.query().get("password");
+    Pistache::Optional<std::string> password;
+    if(!passwordQuery.isEmpty()){
+        std::string valueQuery_instance;
+        if(fromStringValue(passwordQuery.get(), valueQuery_instance)){
+            password = Pistache::Some(valueQuery_instance);
+        }
+    }
+    
+    try {
+      this->login_user(username, password, response);
+    } catch (nlohmann::detail::exception &e) {
+        //send a 400 error
+        response.send(Pistache::Http::Code::Bad_Request, e.what());
+        return;
+    } catch (Pistache::Http::HttpError &e) {
+        response.send(static_cast<Pistache::Http::Code>(e.code()), e.what());
+        return;
+    } catch (std::exception &e) {
+        //send a 500 error
+        response.send(Pistache::Http::Code::Internal_Server_Error, e.what());
+        return;
+    }
+
+}
+void UserApi::logout_user_handler(const Pistache::Rest::Request &, Pistache::Http::ResponseWriter response) {
+
+    try {
+      this->logout_user(response);
+    } catch (nlohmann::detail::exception &e) {
+        //send a 400 error
+        response.send(Pistache::Http::Code::Bad_Request, e.what());
+        return;
+    } catch (Pistache::Http::HttpError &e) {
+        response.send(static_cast<Pistache::Http::Code>(e.code()), e.what());
+        return;
+    } catch (std::exception &e) {
+        //send a 500 error
+        response.send(Pistache::Http::Code::Internal_Server_Error, e.what());
+        return;
+    }
+
+}
+void UserApi::update_user_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response) {
+    // Getting the path params
+    auto username = request.param(":username").as<std::string>();
+    
+    // Getting the body param
+    
+    User user;
+    
+    try {
+      nlohmann::json::parse(request.body()).get_to(user);
+      this->update_user(username, user, response);
+    } catch (nlohmann::detail::exception &e) {
+        //send a 400 error
+        response.send(Pistache::Http::Code::Bad_Request, e.what());
+        return;
+    } catch (Pistache::Http::HttpError &e) {
+        response.send(static_cast<Pistache::Http::Code>(e.code()), e.what());
+        return;
+    } catch (std::exception &e) {
+        //send a 500 error
+        response.send(Pistache::Http::Code::Internal_Server_Error, e.what());
+        return;
+    }
+
+}
+
+void UserApi::user_api_default_handler(const Pistache::Rest::Request &, Pistache::Http::ResponseWriter response) {
+    response.send(Pistache::Http::Code::Not_Found, "The requested method does not exist");
+}
+
+}
+}
+}
+}
+
--- a/samples/server/petstore/cpp-oatpp/api/UserApi.h
+++ b/samples/server/petstore/cpp-oatpp/api/UserApi.h
@ -0,0 +1,143 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+/*
+ * UserApi.h
+ *
+ * 
+ */
+
+#ifndef UserApi_H_
+#define UserApi_H_
+
+
+#include <pistache/http.h>
+#include <pistache/router.h>
+#include <pistache/http_headers.h>
+#include <pistache/optional.h>
+
+
+#include "User.h"
+#include <string>
+#include <vector>
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace api {
+
+using namespace org::openapitools::server::model;
+
+class  UserApi {
+public:
+    UserApi(std::shared_ptr<Pistache::Rest::Router>);
+    virtual ~UserApi() {}
+    void init();
+
+    const std::string base = "/v2";
+
+private:
+    void setupRoutes();
+
+    void create_user_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response);
+    void create_users_with_array_input_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response);
+    void create_users_with_list_input_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response);
+    void delete_user_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response);
+    void get_user_by_name_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response);
+    void login_user_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response);
+    void logout_user_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response);
+    void update_user_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response);
+    void user_api_default_handler(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter response);
+
+    std::shared_ptr<Pistache::Rest::Router> router;
+
+    /// <summary>
+    /// Create user
+    /// </summary>
+    /// <remarks>
+    /// This can only be done by the logged in user.
+    /// </remarks>
+    /// <param name="user">Created user object</param>
+    virtual void create_user(const User &user, Pistache::Http::ResponseWriter &response) = 0;
+
+    /// <summary>
+    /// Creates list of users with given input array
+    /// </summary>
+    /// <remarks>
+    /// 
+    /// </remarks>
+    /// <param name="user">List of user object</param>
+    virtual void create_users_with_array_input(const std::vector<User> &user, Pistache::Http::ResponseWriter &response) = 0;
+
+    /// <summary>
+    /// Creates list of users with given input array
+    /// </summary>
+    /// <remarks>
+    /// 
+    /// </remarks>
+    /// <param name="user">List of user object</param>
+    virtual void create_users_with_list_input(const std::vector<User> &user, Pistache::Http::ResponseWriter &response) = 0;
+
+    /// <summary>
+    /// Delete user
+    /// </summary>
+    /// <remarks>
+    /// This can only be done by the logged in user.
+    /// </remarks>
+    /// <param name="username">The name that needs to be deleted</param>
+    virtual void delete_user(const std::string &username, Pistache::Http::ResponseWriter &response) = 0;
+
+    /// <summary>
+    /// Get user by user name
+    /// </summary>
+    /// <remarks>
+    /// 
+    /// </remarks>
+    /// <param name="username">The name that needs to be fetched. Use user1 for testing.</param>
+    virtual void get_user_by_name(const std::string &username, Pistache::Http::ResponseWriter &response) = 0;
+
+    /// <summary>
+    /// Logs user into the system
+    /// </summary>
+    /// <remarks>
+    /// 
+    /// </remarks>
+    /// <param name="username">The user name for login</param>
+    /// <param name="password">The password for login in clear text</param>
+    virtual void login_user(const Oatpp::Optional<std::string> &username, const Oatpp::Optional<std::string> &password, Pistache::Http::ResponseWriter &response) = 0;
+
+    /// <summary>
+    /// Logs out current logged in user session
+    /// </summary>
+    /// <remarks>
+    /// 
+    /// </remarks>
+    virtual void logout_user(Pistache::Http::ResponseWriter &response) = 0;
+
+    /// <summary>
+    /// Updated user
+    /// </summary>
+    /// <remarks>
+    /// This can only be done by the logged in user.
+    /// </remarks>
+    /// <param name="username">name that need to be deleted</param>
+    /// <param name="user">Updated user object</param>
+    virtual void update_user(const std::string &username, const User &user, Pistache::Http::ResponseWriter &response) = 0;
+
+};
+
+}
+}
+}
+}
+
+#endif /* UserApi_H_ */
+
--- a/samples/server/petstore/cpp-oatpp/impl/PetApiImpl.cpp
+++ b/samples/server/petstore/cpp-oatpp/impl/PetApiImpl.cpp
@ -0,0 +1,55 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+
+#include "PetApiImpl.h"
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace api {
+
+using namespace org::openapitools::server::model;
+
+PetApiImpl::PetApiImpl(std::shared_ptr<Pistache::Rest::Router> rtr)
+    : PetApi(rtr)
+    { }
+
+void PetApiImpl::add_pet(const Pet &pet, Pistache::Http::ResponseWriter &response) {
+    response.send(Pistache::Http::Code::Ok, "Do some magic\n");
+}
+void PetApiImpl::delete_pet(const int64_t &petId, const Oatpp::Optional<Oatpp::Http::Header::Raw> &apiKey, Pistache::Http::ResponseWriter &response) {
+    response.send(Pistache::Http::Code::Ok, "Do some magic\n");
+}
+void PetApiImpl::find_pets_by_status(const Oatpp::Optional<std::vector<std::string>> &status, Pistache::Http::ResponseWriter &response) {
+    response.send(Pistache::Http::Code::Ok, "Do some magic\n");
+}
+void PetApiImpl::find_pets_by_tags(const Oatpp::Optional<std::vector<std::string>> &tags, Pistache::Http::ResponseWriter &response) {
+    response.send(Pistache::Http::Code::Ok, "Do some magic\n");
+}
+void PetApiImpl::get_pet_by_id(const int64_t &petId, Pistache::Http::ResponseWriter &response) {
+    response.send(Pistache::Http::Code::Ok, "Do some magic\n");
+}
+void PetApiImpl::update_pet(const Pet &pet, Pistache::Http::ResponseWriter &response) {
+    response.send(Pistache::Http::Code::Ok, "Do some magic\n");
+}
+void PetApiImpl::update_pet_with_form(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter &response){
+    response.send(Pistache::Http::Code::Ok, "Do some magic\n");
+}
+void PetApiImpl::upload_file(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter &response){
+    response.send(Pistache::Http::Code::Ok, "Do some magic\n");
+}
+
+}
+}
+}
+}
+
--- a/samples/server/petstore/cpp-oatpp/impl/PetApiImpl.h
+++ b/samples/server/petstore/cpp-oatpp/impl/PetApiImpl.h
@ -0,0 +1,66 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+
+/*
+* PetApiImpl.h
+*
+* 
+*/
+
+#ifndef PET_API_IMPL_H_
+#define PET_API_IMPL_H_
+
+
+#include <pistache/endpoint.h>
+#include <pistache/http.h>
+#include <pistache/router.h>
+#include <memory>
+
+#include <PetApi.h>
+
+#include <pistache/optional.h>
+
+#include "ApiResponse.h"
+#include "Pet.h"
+#include <string>
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace api {
+
+using namespace org::openapitools::server::model;
+
+class PetApiImpl : public org::openapitools::server::api::PetApi {
+public:
+    PetApiImpl(std::shared_ptr<Pistache::Rest::Router>);
+    ~PetApiImpl() {}
+
+    void add_pet(const Pet &pet, Pistache::Http::ResponseWriter &response);
+    void delete_pet(const int64_t &petId, const Oatpp::Optional<Oatpp::Http::Header::Raw> &apiKey, Pistache::Http::ResponseWriter &response);
+    void find_pets_by_status(const Oatpp::Optional<std::vector<std::string>> &status, Pistache::Http::ResponseWriter &response);
+    void find_pets_by_tags(const Oatpp::Optional<std::vector<std::string>> &tags, Pistache::Http::ResponseWriter &response);
+    void get_pet_by_id(const int64_t &petId, Pistache::Http::ResponseWriter &response);
+    void update_pet(const Pet &pet, Pistache::Http::ResponseWriter &response);
+    void update_pet_with_form(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter &response);
+    void upload_file(const Pistache::Rest::Request &request, Pistache::Http::ResponseWriter &response);
+
+};
+
+}
+}
+}
+}
+
+
+
+#endif
--- a/samples/server/petstore/cpp-oatpp/impl/StoreApiImpl.cpp
+++ b/samples/server/petstore/cpp-oatpp/impl/StoreApiImpl.cpp
@ -0,0 +1,43 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+
+#include "StoreApiImpl.h"
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace api {
+
+using namespace org::openapitools::server::model;
+
+StoreApiImpl::StoreApiImpl(std::shared_ptr<Pistache::Rest::Router> rtr)
+    : StoreApi(rtr)
+    { }
+
+void StoreApiImpl::delete_order(const std::string &orderId, Pistache::Http::ResponseWriter &response) {
+    response.send(Pistache::Http::Code::Ok, "Do some magic\n");
+}
+void StoreApiImpl::get_inventory(Pistache::Http::ResponseWriter &response) {
+    response.send(Pistache::Http::Code::Ok, "Do some magic\n");
+}
+void StoreApiImpl::get_order_by_id(const int64_t &orderId, Pistache::Http::ResponseWriter &response) {
+    response.send(Pistache::Http::Code::Ok, "Do some magic\n");
+}
+void StoreApiImpl::place_order(const Order &order, Pistache::Http::ResponseWriter &response) {
+    response.send(Pistache::Http::Code::Ok, "Do some magic\n");
+}
+
+}
+}
+}
+}
+
--- a/samples/server/petstore/cpp-oatpp/impl/StoreApiImpl.h
+++ b/samples/server/petstore/cpp-oatpp/impl/StoreApiImpl.h
@ -0,0 +1,62 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+
+/*
+* StoreApiImpl.h
+*
+* 
+*/
+
+#ifndef STORE_API_IMPL_H_
+#define STORE_API_IMPL_H_
+
+
+#include <pistache/endpoint.h>
+#include <pistache/http.h>
+#include <pistache/router.h>
+#include <memory>
+
+#include <StoreApi.h>
+
+#include <pistache/optional.h>
+
+#include "Order.h"
+#include <map>
+#include <string>
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace api {
+
+using namespace org::openapitools::server::model;
+
+class StoreApiImpl : public org::openapitools::server::api::StoreApi {
+public:
+    StoreApiImpl(std::shared_ptr<Pistache::Rest::Router>);
+    ~StoreApiImpl() {}
+
+    void delete_order(const std::string &orderId, Pistache::Http::ResponseWriter &response);
+    void get_inventory(Pistache::Http::ResponseWriter &response);
+    void get_order_by_id(const int64_t &orderId, Pistache::Http::ResponseWriter &response);
+    void place_order(const Order &order, Pistache::Http::ResponseWriter &response);
+
+};
+
+}
+}
+}
+}
+
+
+
+#endif
--- a/samples/server/petstore/cpp-oatpp/impl/UserApiImpl.cpp
+++ b/samples/server/petstore/cpp-oatpp/impl/UserApiImpl.cpp
@ -0,0 +1,55 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+
+#include "UserApiImpl.h"
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace api {
+
+using namespace org::openapitools::server::model;
+
+UserApiImpl::UserApiImpl(std::shared_ptr<Pistache::Rest::Router> rtr)
+    : UserApi(rtr)
+    { }
+
+void UserApiImpl::create_user(const User &user, Pistache::Http::ResponseWriter &response) {
+    response.send(Pistache::Http::Code::Ok, "Do some magic\n");
+}
+void UserApiImpl::create_users_with_array_input(const std::vector<User> &user, Pistache::Http::ResponseWriter &response) {
+    response.send(Pistache::Http::Code::Ok, "Do some magic\n");
+}
+void UserApiImpl::create_users_with_list_input(const std::vector<User> &user, Pistache::Http::ResponseWriter &response) {
+    response.send(Pistache::Http::Code::Ok, "Do some magic\n");
+}
+void UserApiImpl::delete_user(const std::string &username, Pistache::Http::ResponseWriter &response) {
+    response.send(Pistache::Http::Code::Ok, "Do some magic\n");
+}
+void UserApiImpl::get_user_by_name(const std::string &username, Pistache::Http::ResponseWriter &response) {
+    response.send(Pistache::Http::Code::Ok, "Do some magic\n");
+}
+void UserApiImpl::login_user(const Oatpp::Optional<std::string> &username, const Oatpp::Optional<std::string> &password, Pistache::Http::ResponseWriter &response) {
+    response.send(Pistache::Http::Code::Ok, "Do some magic\n");
+}
+void UserApiImpl::logout_user(Pistache::Http::ResponseWriter &response) {
+    response.send(Pistache::Http::Code::Ok, "Do some magic\n");
+}
+void UserApiImpl::update_user(const std::string &username, const User &user, Pistache::Http::ResponseWriter &response) {
+    response.send(Pistache::Http::Code::Ok, "Do some magic\n");
+}
+
+}
+}
+}
+}
+
--- a/samples/server/petstore/cpp-oatpp/impl/UserApiImpl.h
+++ b/samples/server/petstore/cpp-oatpp/impl/UserApiImpl.h
@ -0,0 +1,66 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+
+/*
+* UserApiImpl.h
+*
+* 
+*/
+
+#ifndef USER_API_IMPL_H_
+#define USER_API_IMPL_H_
+
+
+#include <pistache/endpoint.h>
+#include <pistache/http.h>
+#include <pistache/router.h>
+#include <memory>
+
+#include <UserApi.h>
+
+#include <pistache/optional.h>
+
+#include "User.h"
+#include <string>
+#include <vector>
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace api {
+
+using namespace org::openapitools::server::model;
+
+class UserApiImpl : public org::openapitools::server::api::UserApi {
+public:
+    UserApiImpl(std::shared_ptr<Pistache::Rest::Router>);
+    ~UserApiImpl() {}
+
+    void create_user(const User &user, Pistache::Http::ResponseWriter &response);
+    void create_users_with_array_input(const std::vector<User> &user, Pistache::Http::ResponseWriter &response);
+    void create_users_with_list_input(const std::vector<User> &user, Pistache::Http::ResponseWriter &response);
+    void delete_user(const std::string &username, Pistache::Http::ResponseWriter &response);
+    void get_user_by_name(const std::string &username, Pistache::Http::ResponseWriter &response);
+    void login_user(const Oatpp::Optional<std::string> &username, const Oatpp::Optional<std::string> &password, Pistache::Http::ResponseWriter &response);
+    void logout_user(Pistache::Http::ResponseWriter &response);
+    void update_user(const std::string &username, const User &user, Pistache::Http::ResponseWriter &response);
+
+};
+
+}
+}
+}
+}
+
+
+
+#endif
--- a/samples/server/petstore/cpp-oatpp/main-api-server.cpp
+++ b/samples/server/petstore/cpp-oatpp/main-api-server.cpp
@ -0,0 +1,95 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+
+
+#include "pistache/endpoint.h"
+#include "pistache/http.h"
+#include "pistache/router.h"
+#ifdef __linux__
+#include <vector>
+#include <signal.h>
+#include <unistd.h>
+#endif
+
+#include "PetApiImpl.h"
+#include "StoreApiImpl.h"
+#include "UserApiImpl.h"
+
+#define PISTACHE_SERVER_THREADS     2
+#define PISTACHE_SERVER_MAX_REQUEST_SIZE 32768
+#define PISTACHE_SERVER_MAX_RESPONSE_SIZE 32768
+
+static Pistache::Http::Endpoint *httpEndpoint;
+#ifdef __linux__
+static void sigHandler [[noreturn]] (int sig){
+    switch(sig){
+        case SIGINT:
+        case SIGQUIT:
+        case SIGTERM:
+        case SIGHUP:
+        default:
+            httpEndpoint->shutdown();
+            break;
+    }
+    exit(0);
+}
+
+static void setUpUnixSignals(std::vector<int> quitSignals) {
+    sigset_t blocking_mask;
+    sigemptyset(&blocking_mask);
+    for (auto sig : quitSignals)
+        sigaddset(&blocking_mask, sig);
+
+    struct sigaction sa;
+    sa.sa_handler = sigHandler;
+    sa.sa_mask    = blocking_mask;
+    sa.sa_flags   = 0;
+
+    for (auto sig : quitSignals)
+        sigaction(sig, &sa, nullptr);
+}
+#endif
+
+using namespace org::openapitools::server::api;
+
+int main() {
+#ifdef __linux__
+    std::vector<int> sigs{SIGQUIT, SIGINT, SIGTERM, SIGHUP};
+    setUpUnixSignals(sigs);
+#endif
+    Pistache::Address addr(Pistache::Ipv4::any(), Pistache::Port(8080));
+
+    httpEndpoint = new Pistache::Http::Endpoint((addr));
+    auto router = std::make_shared<Pistache::Rest::Router>();
+
+    auto opts = Pistache::Http::Endpoint::options()
+        .threads(PISTACHE_SERVER_THREADS);
+    opts.flags(Pistache::Tcp::Options::ReuseAddr);
+    opts.maxRequestSize(PISTACHE_SERVER_MAX_REQUEST_SIZE);
+    opts.maxResponseSize(PISTACHE_SERVER_MAX_RESPONSE_SIZE);
+    httpEndpoint->init(opts);
+
+    
+    PetApiImpl PetApiserver(router);
+    PetApiserver.init();
+    StoreApiImpl StoreApiserver(router);
+    StoreApiserver.init();
+    UserApiImpl UserApiserver(router);
+    UserApiserver.init();
+
+    httpEndpoint->setHandler(router->handler());
+    httpEndpoint->serve();
+
+    httpEndpoint->shutdown();
+
+}
+
--- a/samples/server/petstore/cpp-oatpp/model/ApiResponse.cpp
+++ b/samples/server/petstore/cpp-oatpp/model/ApiResponse.cpp
@ -0,0 +1,127 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+
+
+#include "ApiResponse.h"
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace model {
+
+ApiResponse::ApiResponse()
+{
+    m_Code = 0;
+    m_CodeIsSet = false;
+    m_Type = "";
+    m_TypeIsSet = false;
+    m_Message = "";
+    m_MessageIsSet = false;
+    
+}
+
+ApiResponse::~ApiResponse()
+{
+}
+
+void ApiResponse::validate()
+{
+    // TODO: implement validation
+}
+
+void to_json(nlohmann::json& j, const ApiResponse& o)
+{
+    j = nlohmann::json();
+    if(o.codeIsSet())
+        j["code"] = o.m_Code;
+    if(o.typeIsSet())
+        j["type"] = o.m_Type;
+    if(o.messageIsSet())
+        j["message"] = o.m_Message;
+}
+
+void from_json(const nlohmann::json& j, ApiResponse& o)
+{
+    if(j.find("code") != j.end())
+    {
+        j.at("code").get_to(o.m_Code);
+        o.m_CodeIsSet = true;
+    } 
+    if(j.find("type") != j.end())
+    {
+        j.at("type").get_to(o.m_Type);
+        o.m_TypeIsSet = true;
+    } 
+    if(j.find("message") != j.end())
+    {
+        j.at("message").get_to(o.m_Message);
+        o.m_MessageIsSet = true;
+    } 
+}
+
+int32_t ApiResponse::getCode() const
+{
+    return m_Code;
+}
+void ApiResponse::setCode(int32_t const value)
+{
+    m_Code = value;
+    m_CodeIsSet = true;
+}
+bool ApiResponse::codeIsSet() const
+{
+    return m_CodeIsSet;
+}
+void ApiResponse::unsetCode()
+{
+    m_CodeIsSet = false;
+}
+std::string ApiResponse::getType() const
+{
+    return m_Type;
+}
+void ApiResponse::setType(std::string const& value)
+{
+    m_Type = value;
+    m_TypeIsSet = true;
+}
+bool ApiResponse::typeIsSet() const
+{
+    return m_TypeIsSet;
+}
+void ApiResponse::unsetType()
+{
+    m_TypeIsSet = false;
+}
+std::string ApiResponse::getMessage() const
+{
+    return m_Message;
+}
+void ApiResponse::setMessage(std::string const& value)
+{
+    m_Message = value;
+    m_MessageIsSet = true;
+}
+bool ApiResponse::messageIsSet() const
+{
+    return m_MessageIsSet;
+}
+void ApiResponse::unsetMessage()
+{
+    m_MessageIsSet = false;
+}
+
+}
+}
+}
+}
+
--- a/samples/server/petstore/cpp-oatpp/model/ApiResponse.h
+++ b/samples/server/petstore/cpp-oatpp/model/ApiResponse.h
@ -0,0 +1,82 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+/*
+ * ApiResponse.h
+ *
+ * Describes the result of uploading an image resource
+ */
+
+#ifndef ApiResponse_H_
+#define ApiResponse_H_
+
+
+#include <string>
+#include <nlohmann/json.hpp>
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace model {
+
+/// <summary>
+/// Describes the result of uploading an image resource
+/// </summary>
+class  ApiResponse
+{
+public:
+    ApiResponse();
+    virtual ~ApiResponse();
+
+    void validate();
+
+    /////////////////////////////////////////////
+    /// ApiResponse members
+
+    /// <summary>
+    /// 
+    /// </summary>
+    int32_t getCode() const;
+    void setCode(int32_t const value);
+    bool codeIsSet() const;
+    void unsetCode();
+    /// <summary>
+    /// 
+    /// </summary>
+    std::string getType() const;
+    void setType(std::string const& value);
+    bool typeIsSet() const;
+    void unsetType();
+    /// <summary>
+    /// 
+    /// </summary>
+    std::string getMessage() const;
+    void setMessage(std::string const& value);
+    bool messageIsSet() const;
+    void unsetMessage();
+
+    friend void to_json(nlohmann::json& j, const ApiResponse& o);
+    friend void from_json(const nlohmann::json& j, ApiResponse& o);
+protected:
+    int32_t m_Code;
+    bool m_CodeIsSet;
+    std::string m_Type;
+    bool m_TypeIsSet;
+    std::string m_Message;
+    bool m_MessageIsSet;
+};
+
+}
+}
+}
+}
+
+#endif /* ApiResponse_H_ */
--- a/samples/server/petstore/cpp-oatpp/model/Category.cpp
+++ b/samples/server/petstore/cpp-oatpp/model/Category.cpp
@ -0,0 +1,101 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+
+
+#include "Category.h"
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace model {
+
+Category::Category()
+{
+    m_Id = 0L;
+    m_IdIsSet = false;
+    m_Name = "";
+    m_NameIsSet = false;
+    
+}
+
+Category::~Category()
+{
+}
+
+void Category::validate()
+{
+    // TODO: implement validation
+}
+
+void to_json(nlohmann::json& j, const Category& o)
+{
+    j = nlohmann::json();
+    if(o.idIsSet())
+        j["id"] = o.m_Id;
+    if(o.nameIsSet())
+        j["name"] = o.m_Name;
+}
+
+void from_json(const nlohmann::json& j, Category& o)
+{
+    if(j.find("id") != j.end())
+    {
+        j.at("id").get_to(o.m_Id);
+        o.m_IdIsSet = true;
+    } 
+    if(j.find("name") != j.end())
+    {
+        j.at("name").get_to(o.m_Name);
+        o.m_NameIsSet = true;
+    } 
+}
+
+int64_t Category::getId() const
+{
+    return m_Id;
+}
+void Category::setId(int64_t const value)
+{
+    m_Id = value;
+    m_IdIsSet = true;
+}
+bool Category::idIsSet() const
+{
+    return m_IdIsSet;
+}
+void Category::unsetId()
+{
+    m_IdIsSet = false;
+}
+std::string Category::getName() const
+{
+    return m_Name;
+}
+void Category::setName(std::string const& value)
+{
+    m_Name = value;
+    m_NameIsSet = true;
+}
+bool Category::nameIsSet() const
+{
+    return m_NameIsSet;
+}
+void Category::unsetName()
+{
+    m_NameIsSet = false;
+}
+
+}
+}
+}
+}
+
--- a/samples/server/petstore/cpp-oatpp/model/Category.h
+++ b/samples/server/petstore/cpp-oatpp/model/Category.h
@ -0,0 +1,73 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+/*
+ * Category.h
+ *
+ * A category for a pet
+ */
+
+#ifndef Category_H_
+#define Category_H_
+
+
+#include <string>
+#include <nlohmann/json.hpp>
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace model {
+
+/// <summary>
+/// A category for a pet
+/// </summary>
+class  Category
+{
+public:
+    Category();
+    virtual ~Category();
+
+    void validate();
+
+    /////////////////////////////////////////////
+    /// Category members
+
+    /// <summary>
+    /// 
+    /// </summary>
+    int64_t getId() const;
+    void setId(int64_t const value);
+    bool idIsSet() const;
+    void unsetId();
+    /// <summary>
+    /// 
+    /// </summary>
+    std::string getName() const;
+    void setName(std::string const& value);
+    bool nameIsSet() const;
+    void unsetName();
+
+    friend void to_json(nlohmann::json& j, const Category& o);
+    friend void from_json(const nlohmann::json& j, Category& o);
+protected:
+    int64_t m_Id;
+    bool m_IdIsSet;
+    std::string m_Name;
+    bool m_NameIsSet;
+};
+
+}
+}
+}
+}
+
+#endif /* Category_H_ */
--- a/samples/server/petstore/cpp-oatpp/model/Helpers.cpp
+++ b/samples/server/petstore/cpp-oatpp/model/Helpers.cpp
@ -0,0 +1,98 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+#include "Helpers.h"
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace helpers {
+
+
+std::string toStringValue(const std::string &value){
+    return std::string(value);
+}
+
+std::string toStringValue(const int32_t &value){
+    return std::to_string(value);
+}
+
+std::string toStringValue(const int64_t &value){
+    return std::to_string(value);
+}
+
+std::string toStringValue(const bool &value){
+    return value?std::string("true"):std::string("false");
+}
+
+std::string toStringValue(const float &value){
+    return std::to_string(value);
+}
+
+std::string toStringValue(const double &value){
+    return std::to_string(value);
+}
+
+bool fromStringValue(const std::string &inStr, std::string &value){
+    value = std::string(inStr);
+    return true;
+}
+
+bool fromStringValue(const std::string &inStr, int32_t &value){
+    try {
+        value = std::stoi( inStr );
+    }
+    catch (const std::invalid_argument&) {
+        return false;
+    }
+    return true;
+}
+
+bool fromStringValue(const std::string &inStr, int64_t &value){
+    try {
+        value = std::stol( inStr );
+    }
+    catch (const std::invalid_argument&) {
+        return false;
+    }
+    return true;
+}
+
+bool fromStringValue(const std::string &inStr, bool &value){
+    bool result = true;
+    inStr == "true"?value = true: inStr == "false"?value = false: result = false;
+    return result;
+}
+
+bool fromStringValue(const std::string &inStr, float &value){
+    try {
+        value = std::stof( inStr );
+    }
+    catch (const std::invalid_argument&) {
+        return false;
+    }
+    return true;
+}
+
+bool fromStringValue(const std::string &inStr, double &value){
+    try {
+        value = std::stod( inStr );
+    }
+    catch (const std::invalid_argument&) {
+        return false;
+    }
+    return true;
+}
+
+}
+}
+}
+}
--- a/samples/server/petstore/cpp-oatpp/model/Helpers.h
+++ b/samples/server/petstore/cpp-oatpp/model/Helpers.h
@ -0,0 +1,76 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+/*
+ * Helpers.h
+ *
+ * This is the helper class for models and primitives
+ */
+
+#ifndef Helpers_H_
+#define Helpers_H_
+
+#include <ctime>
+#include <string>
+#include <sstream>
+#include <vector>
+#include <map>
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace helpers {
+
+    std::string toStringValue(const std::string &value);
+    std::string toStringValue(const int32_t &value);
+    std::string toStringValue(const int64_t &value);
+    std::string toStringValue(const bool &value);
+    std::string toStringValue(const float &value);
+    std::string toStringValue(const double &value);
+
+    bool fromStringValue(const std::string &inStr, std::string &value);
+    bool fromStringValue(const std::string &inStr, int32_t &value);
+    bool fromStringValue(const std::string &inStr, int64_t &value);
+    bool fromStringValue(const std::string &inStr, bool &value);
+    bool fromStringValue(const std::string &inStr, float &value);
+    bool fromStringValue(const std::string &inStr, double &value);
+    template<typename T>
+    bool fromStringValue(const std::vector<std::string> &inStr, std::vector<T> &value){
+        try{
+            for(auto & item : inStr){
+                T itemValue;
+                if(fromStringValue(item, itemValue)){
+                    value.push_back(itemValue);
+                }
+            }
+        }
+        catch(...){
+            return false;
+        }
+        return value.size() > 0;
+    }
+    template<typename T>
+    bool fromStringValue(const std::string &inStr, std::vector<T> &value, char separator = ','){
+        std::vector<std::string> inStrings;
+        std::istringstream f(inStr);
+        std::string s;
+        while (std::getline(f, s, separator)) {
+            inStrings.push_back(s);
+        }
+        return fromStringValue(inStrings, value);
+    }
+
+}
+}
+}
+}
+
+#endif // Helpers_H_
--- a/samples/server/petstore/cpp-oatpp/model/Inline_object.cpp
+++ b/samples/server/petstore/cpp-oatpp/model/Inline_object.cpp
@ -0,0 +1,101 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+
+
+#include "Inline_object.h"
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace model {
+
+Inline_object::Inline_object()
+{
+    m_Name = "";
+    m_NameIsSet = false;
+    m_Status = "";
+    m_StatusIsSet = false;
+    
+}
+
+Inline_object::~Inline_object()
+{
+}
+
+void Inline_object::validate()
+{
+    // TODO: implement validation
+}
+
+void to_json(nlohmann::json& j, const Inline_object& o)
+{
+    j = nlohmann::json();
+    if(o.nameIsSet())
+        j["name"] = o.m_Name;
+    if(o.statusIsSet())
+        j["status"] = o.m_Status;
+}
+
+void from_json(const nlohmann::json& j, Inline_object& o)
+{
+    if(j.find("name") != j.end())
+    {
+        j.at("name").get_to(o.m_Name);
+        o.m_NameIsSet = true;
+    } 
+    if(j.find("status") != j.end())
+    {
+        j.at("status").get_to(o.m_Status);
+        o.m_StatusIsSet = true;
+    } 
+}
+
+std::string Inline_object::getName() const
+{
+    return m_Name;
+}
+void Inline_object::setName(std::string const& value)
+{
+    m_Name = value;
+    m_NameIsSet = true;
+}
+bool Inline_object::nameIsSet() const
+{
+    return m_NameIsSet;
+}
+void Inline_object::unsetName()
+{
+    m_NameIsSet = false;
+}
+std::string Inline_object::getStatus() const
+{
+    return m_Status;
+}
+void Inline_object::setStatus(std::string const& value)
+{
+    m_Status = value;
+    m_StatusIsSet = true;
+}
+bool Inline_object::statusIsSet() const
+{
+    return m_StatusIsSet;
+}
+void Inline_object::unsetStatus()
+{
+    m_StatusIsSet = false;
+}
+
+}
+}
+}
+}
+
--- a/samples/server/petstore/cpp-oatpp/model/Inline_object.h
+++ b/samples/server/petstore/cpp-oatpp/model/Inline_object.h
@ -0,0 +1,73 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+/*
+ * Inline_object.h
+ *
+ * 
+ */
+
+#ifndef Inline_object_H_
+#define Inline_object_H_
+
+
+#include <string>
+#include <nlohmann/json.hpp>
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace model {
+
+/// <summary>
+/// 
+/// </summary>
+class  Inline_object
+{
+public:
+    Inline_object();
+    virtual ~Inline_object();
+
+    void validate();
+
+    /////////////////////////////////////////////
+    /// Inline_object members
+
+    /// <summary>
+    /// Updated name of the pet
+    /// </summary>
+    std::string getName() const;
+    void setName(std::string const& value);
+    bool nameIsSet() const;
+    void unsetName();
+    /// <summary>
+    /// Updated status of the pet
+    /// </summary>
+    std::string getStatus() const;
+    void setStatus(std::string const& value);
+    bool statusIsSet() const;
+    void unsetStatus();
+
+    friend void to_json(nlohmann::json& j, const Inline_object& o);
+    friend void from_json(const nlohmann::json& j, Inline_object& o);
+protected:
+    std::string m_Name;
+    bool m_NameIsSet;
+    std::string m_Status;
+    bool m_StatusIsSet;
+};
+
+}
+}
+}
+}
+
+#endif /* Inline_object_H_ */
--- a/samples/server/petstore/cpp-oatpp/model/Inline_object_1.cpp
+++ b/samples/server/petstore/cpp-oatpp/model/Inline_object_1.cpp
@ -0,0 +1,100 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+
+
+#include "Inline_object_1.h"
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace model {
+
+Inline_object_1::Inline_object_1()
+{
+    m_AdditionalMetadata = "";
+    m_AdditionalMetadataIsSet = false;
+    m_fileIsSet = false;
+    
+}
+
+Inline_object_1::~Inline_object_1()
+{
+}
+
+void Inline_object_1::validate()
+{
+    // TODO: implement validation
+}
+
+void to_json(nlohmann::json& j, const Inline_object_1& o)
+{
+    j = nlohmann::json();
+    if(o.additionalMetadataIsSet())
+        j["additionalMetadata"] = o.m_AdditionalMetadata;
+    if(o.fileIsSet())
+        j["file"] = o.m_file;
+}
+
+void from_json(const nlohmann::json& j, Inline_object_1& o)
+{
+    if(j.find("additionalMetadata") != j.end())
+    {
+        j.at("additionalMetadata").get_to(o.m_AdditionalMetadata);
+        o.m_AdditionalMetadataIsSet = true;
+    } 
+    if(j.find("file") != j.end())
+    {
+        j.at("file").get_to(o.m_file);
+        o.m_fileIsSet = true;
+    } 
+}
+
+std::string Inline_object_1::getAdditionalMetadata() const
+{
+    return m_AdditionalMetadata;
+}
+void Inline_object_1::setAdditionalMetadata(std::string const& value)
+{
+    m_AdditionalMetadata = value;
+    m_AdditionalMetadataIsSet = true;
+}
+bool Inline_object_1::additionalMetadataIsSet() const
+{
+    return m_AdditionalMetadataIsSet;
+}
+void Inline_object_1::unsetAdditionalMetadata()
+{
+    m_AdditionalMetadataIsSet = false;
+}
+std::string Inline_object_1::getFile() const
+{
+    return m_file;
+}
+void Inline_object_1::setFile(std::string const& value)
+{
+    m_file = value;
+    m_fileIsSet = true;
+}
+bool Inline_object_1::fileIsSet() const
+{
+    return m_fileIsSet;
+}
+void Inline_object_1::unsetfile()
+{
+    m_fileIsSet = false;
+}
+
+}
+}
+}
+}
+
--- a/samples/server/petstore/cpp-oatpp/model/Inline_object_1.h
+++ b/samples/server/petstore/cpp-oatpp/model/Inline_object_1.h
@ -0,0 +1,73 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+/*
+ * Inline_object_1.h
+ *
+ * 
+ */
+
+#ifndef Inline_object_1_H_
+#define Inline_object_1_H_
+
+
+#include <string>
+#include <nlohmann/json.hpp>
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace model {
+
+/// <summary>
+/// 
+/// </summary>
+class  Inline_object_1
+{
+public:
+    Inline_object_1();
+    virtual ~Inline_object_1();
+
+    void validate();
+
+    /////////////////////////////////////////////
+    /// Inline_object_1 members
+
+    /// <summary>
+    /// Additional data to pass to server
+    /// </summary>
+    std::string getAdditionalMetadata() const;
+    void setAdditionalMetadata(std::string const& value);
+    bool additionalMetadataIsSet() const;
+    void unsetAdditionalMetadata();
+    /// <summary>
+    /// file to upload
+    /// </summary>
+    std::string getFile() const;
+    void setFile(std::string const& value);
+    bool fileIsSet() const;
+    void unsetfile();
+
+    friend void to_json(nlohmann::json& j, const Inline_object_1& o);
+    friend void from_json(const nlohmann::json& j, Inline_object_1& o);
+protected:
+    std::string m_AdditionalMetadata;
+    bool m_AdditionalMetadataIsSet;
+    std::string m_file;
+    bool m_fileIsSet;
+};
+
+}
+}
+}
+}
+
+#endif /* Inline_object_1_H_ */
--- a/samples/server/petstore/cpp-oatpp/model/Order.cpp
+++ b/samples/server/petstore/cpp-oatpp/model/Order.cpp
@ -0,0 +1,205 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+
+
+#include "Order.h"
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace model {
+
+Order::Order()
+{
+    m_Id = 0L;
+    m_IdIsSet = false;
+    m_PetId = 0L;
+    m_PetIdIsSet = false;
+    m_Quantity = 0;
+    m_QuantityIsSet = false;
+    m_ShipDate = "";
+    m_ShipDateIsSet = false;
+    m_Status = "";
+    m_StatusIsSet = false;
+    m_Complete = false;
+    m_CompleteIsSet = false;
+    
+}
+
+Order::~Order()
+{
+}
+
+void Order::validate()
+{
+    // TODO: implement validation
+}
+
+void to_json(nlohmann::json& j, const Order& o)
+{
+    j = nlohmann::json();
+    if(o.idIsSet())
+        j["id"] = o.m_Id;
+    if(o.petIdIsSet())
+        j["petId"] = o.m_PetId;
+    if(o.quantityIsSet())
+        j["quantity"] = o.m_Quantity;
+    if(o.shipDateIsSet())
+        j["shipDate"] = o.m_ShipDate;
+    if(o.statusIsSet())
+        j["status"] = o.m_Status;
+    if(o.completeIsSet())
+        j["complete"] = o.m_Complete;
+}
+
+void from_json(const nlohmann::json& j, Order& o)
+{
+    if(j.find("id") != j.end())
+    {
+        j.at("id").get_to(o.m_Id);
+        o.m_IdIsSet = true;
+    } 
+    if(j.find("petId") != j.end())
+    {
+        j.at("petId").get_to(o.m_PetId);
+        o.m_PetIdIsSet = true;
+    } 
+    if(j.find("quantity") != j.end())
+    {
+        j.at("quantity").get_to(o.m_Quantity);
+        o.m_QuantityIsSet = true;
+    } 
+    if(j.find("shipDate") != j.end())
+    {
+        j.at("shipDate").get_to(o.m_ShipDate);
+        o.m_ShipDateIsSet = true;
+    } 
+    if(j.find("status") != j.end())
+    {
+        j.at("status").get_to(o.m_Status);
+        o.m_StatusIsSet = true;
+    } 
+    if(j.find("complete") != j.end())
+    {
+        j.at("complete").get_to(o.m_Complete);
+        o.m_CompleteIsSet = true;
+    } 
+}
+
+int64_t Order::getId() const
+{
+    return m_Id;
+}
+void Order::setId(int64_t const value)
+{
+    m_Id = value;
+    m_IdIsSet = true;
+}
+bool Order::idIsSet() const
+{
+    return m_IdIsSet;
+}
+void Order::unsetId()
+{
+    m_IdIsSet = false;
+}
+int64_t Order::getPetId() const
+{
+    return m_PetId;
+}
+void Order::setPetId(int64_t const value)
+{
+    m_PetId = value;
+    m_PetIdIsSet = true;
+}
+bool Order::petIdIsSet() const
+{
+    return m_PetIdIsSet;
+}
+void Order::unsetPetId()
+{
+    m_PetIdIsSet = false;
+}
+int32_t Order::getQuantity() const
+{
+    return m_Quantity;
+}
+void Order::setQuantity(int32_t const value)
+{
+    m_Quantity = value;
+    m_QuantityIsSet = true;
+}
+bool Order::quantityIsSet() const
+{
+    return m_QuantityIsSet;
+}
+void Order::unsetQuantity()
+{
+    m_QuantityIsSet = false;
+}
+std::string Order::getShipDate() const
+{
+    return m_ShipDate;
+}
+void Order::setShipDate(std::string const& value)
+{
+    m_ShipDate = value;
+    m_ShipDateIsSet = true;
+}
+bool Order::shipDateIsSet() const
+{
+    return m_ShipDateIsSet;
+}
+void Order::unsetShipDate()
+{
+    m_ShipDateIsSet = false;
+}
+std::string Order::getStatus() const
+{
+    return m_Status;
+}
+void Order::setStatus(std::string const& value)
+{
+    m_Status = value;
+    m_StatusIsSet = true;
+}
+bool Order::statusIsSet() const
+{
+    return m_StatusIsSet;
+}
+void Order::unsetStatus()
+{
+    m_StatusIsSet = false;
+}
+bool Order::isComplete() const
+{
+    return m_Complete;
+}
+void Order::setComplete(bool const value)
+{
+    m_Complete = value;
+    m_CompleteIsSet = true;
+}
+bool Order::completeIsSet() const
+{
+    return m_CompleteIsSet;
+}
+void Order::unsetComplete()
+{
+    m_CompleteIsSet = false;
+}
+
+}
+}
+}
+}
+
--- a/samples/server/petstore/cpp-oatpp/model/Order.h
+++ b/samples/server/petstore/cpp-oatpp/model/Order.h
@ -0,0 +1,109 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+/*
+ * Order.h
+ *
+ * An order for a pets from the pet store
+ */
+
+#ifndef Order_H_
+#define Order_H_
+
+
+#include <string>
+#include <nlohmann/json.hpp>
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace model {
+
+/// <summary>
+/// An order for a pets from the pet store
+/// </summary>
+class  Order
+{
+public:
+    Order();
+    virtual ~Order();
+
+    void validate();
+
+    /////////////////////////////////////////////
+    /// Order members
+
+    /// <summary>
+    /// 
+    /// </summary>
+    int64_t getId() const;
+    void setId(int64_t const value);
+    bool idIsSet() const;
+    void unsetId();
+    /// <summary>
+    /// 
+    /// </summary>
+    int64_t getPetId() const;
+    void setPetId(int64_t const value);
+    bool petIdIsSet() const;
+    void unsetPetId();
+    /// <summary>
+    /// 
+    /// </summary>
+    int32_t getQuantity() const;
+    void setQuantity(int32_t const value);
+    bool quantityIsSet() const;
+    void unsetQuantity();
+    /// <summary>
+    /// 
+    /// </summary>
+    std::string getShipDate() const;
+    void setShipDate(std::string const& value);
+    bool shipDateIsSet() const;
+    void unsetShipDate();
+    /// <summary>
+    /// Order Status
+    /// </summary>
+    std::string getStatus() const;
+    void setStatus(std::string const& value);
+    bool statusIsSet() const;
+    void unsetStatus();
+    /// <summary>
+    /// 
+    /// </summary>
+    bool isComplete() const;
+    void setComplete(bool const value);
+    bool completeIsSet() const;
+    void unsetComplete();
+
+    friend void to_json(nlohmann::json& j, const Order& o);
+    friend void from_json(const nlohmann::json& j, Order& o);
+protected:
+    int64_t m_Id;
+    bool m_IdIsSet;
+    int64_t m_PetId;
+    bool m_PetIdIsSet;
+    int32_t m_Quantity;
+    bool m_QuantityIsSet;
+    std::string m_ShipDate;
+    bool m_ShipDateIsSet;
+    std::string m_Status;
+    bool m_StatusIsSet;
+    bool m_Complete;
+    bool m_CompleteIsSet;
+};
+
+}
+}
+}
+}
+
+#endif /* Order_H_ */
--- a/samples/server/petstore/cpp-oatpp/model/Pet.cpp
+++ b/samples/server/petstore/cpp-oatpp/model/Pet.cpp
@ -0,0 +1,172 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+
+
+#include "Pet.h"
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace model {
+
+Pet::Pet()
+{
+    m_Id = 0L;
+    m_IdIsSet = false;
+    m_CategoryIsSet = false;
+    m_Name = "";
+    m_TagsIsSet = false;
+    m_Status = "";
+    m_StatusIsSet = false;
+    
+}
+
+Pet::~Pet()
+{
+}
+
+void Pet::validate()
+{
+    // TODO: implement validation
+}
+
+void to_json(nlohmann::json& j, const Pet& o)
+{
+    j = nlohmann::json();
+    if(o.idIsSet())
+        j["id"] = o.m_Id;
+    if(o.categoryIsSet())
+        j["category"] = o.m_Category;
+    j["name"] = o.m_Name;
+    j["photoUrls"] = o.m_PhotoUrls;
+    if(o.tagsIsSet() || !o.m_Tags.empty())
+        j["tags"] = o.m_Tags;
+    if(o.statusIsSet())
+        j["status"] = o.m_Status;
+}
+
+void from_json(const nlohmann::json& j, Pet& o)
+{
+    if(j.find("id") != j.end())
+    {
+        j.at("id").get_to(o.m_Id);
+        o.m_IdIsSet = true;
+    } 
+    if(j.find("category") != j.end())
+    {
+        j.at("category").get_to(o.m_Category);
+        o.m_CategoryIsSet = true;
+    } 
+    j.at("name").get_to(o.m_Name);
+    j.at("photoUrls").get_to(o.m_PhotoUrls);
+    if(j.find("tags") != j.end())
+    {
+        j.at("tags").get_to(o.m_Tags);
+        o.m_TagsIsSet = true;
+    } 
+    if(j.find("status") != j.end())
+    {
+        j.at("status").get_to(o.m_Status);
+        o.m_StatusIsSet = true;
+    } 
+}
+
+int64_t Pet::getId() const
+{
+    return m_Id;
+}
+void Pet::setId(int64_t const value)
+{
+    m_Id = value;
+    m_IdIsSet = true;
+}
+bool Pet::idIsSet() const
+{
+    return m_IdIsSet;
+}
+void Pet::unsetId()
+{
+    m_IdIsSet = false;
+}
+Category Pet::getCategory() const
+{
+    return m_Category;
+}
+void Pet::setCategory(Category const& value)
+{
+    m_Category = value;
+    m_CategoryIsSet = true;
+}
+bool Pet::categoryIsSet() const
+{
+    return m_CategoryIsSet;
+}
+void Pet::unsetCategory()
+{
+    m_CategoryIsSet = false;
+}
+std::string Pet::getName() const
+{
+    return m_Name;
+}
+void Pet::setName(std::string const& value)
+{
+    m_Name = value;
+}
+std::vector<std::string>& Pet::getPhotoUrls()
+{
+    return m_PhotoUrls;
+}
+void Pet::setPhotoUrls(std::vector<std::string> const& value)
+{
+    m_PhotoUrls = value;
+}
+std::vector<Tag>& Pet::getTags()
+{
+    return m_Tags;
+}
+void Pet::setTags(std::vector<Tag> const& value)
+{
+    m_Tags = value;
+    m_TagsIsSet = true;
+}
+bool Pet::tagsIsSet() const
+{
+    return m_TagsIsSet;
+}
+void Pet::unsetTags()
+{
+    m_TagsIsSet = false;
+}
+std::string Pet::getStatus() const
+{
+    return m_Status;
+}
+void Pet::setStatus(std::string const& value)
+{
+    m_Status = value;
+    m_StatusIsSet = true;
+}
+bool Pet::statusIsSet() const
+{
+    return m_StatusIsSet;
+}
+void Pet::unsetStatus()
+{
+    m_StatusIsSet = false;
+}
+
+}
+}
+}
+}
+
--- a/samples/server/petstore/cpp-oatpp/model/Pet.h
+++ b/samples/server/petstore/cpp-oatpp/model/Pet.h
@ -0,0 +1,108 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+/*
+ * Pet.h
+ *
+ * A pet for sale in the pet store
+ */
+
+#ifndef Pet_H_
+#define Pet_H_
+
+
+#include "Tag.h"
+#include <string>
+#include "Category.h"
+#include <vector>
+#include <nlohmann/json.hpp>
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace model {
+
+/// <summary>
+/// A pet for sale in the pet store
+/// </summary>
+class  Pet
+{
+public:
+    Pet();
+    virtual ~Pet();
+
+    void validate();
+
+    /////////////////////////////////////////////
+    /// Pet members
+
+    /// <summary>
+    /// 
+    /// </summary>
+    int64_t getId() const;
+    void setId(int64_t const value);
+    bool idIsSet() const;
+    void unsetId();
+    /// <summary>
+    /// 
+    /// </summary>
+    Category getCategory() const;
+    void setCategory(Category const& value);
+    bool categoryIsSet() const;
+    void unsetCategory();
+    /// <summary>
+    /// 
+    /// </summary>
+    std::string getName() const;
+    void setName(std::string const& value);
+    /// <summary>
+    /// 
+    /// </summary>
+    std::vector<std::string>& getPhotoUrls();
+    void setPhotoUrls(std::vector<std::string> const& value);
+    /// <summary>
+    /// 
+    /// </summary>
+    std::vector<Tag>& getTags();
+    void setTags(std::vector<Tag> const& value);
+    bool tagsIsSet() const;
+    void unsetTags();
+    /// <summary>
+    /// pet status in the store
+    /// </summary>
+    std::string getStatus() const;
+    void setStatus(std::string const& value);
+    bool statusIsSet() const;
+    void unsetStatus();
+
+    friend void to_json(nlohmann::json& j, const Pet& o);
+    friend void from_json(const nlohmann::json& j, Pet& o);
+protected:
+    int64_t m_Id;
+    bool m_IdIsSet;
+    Category m_Category;
+    bool m_CategoryIsSet;
+    std::string m_Name;
+
+    std::vector<std::string> m_PhotoUrls;
+
+    std::vector<Tag> m_Tags;
+    bool m_TagsIsSet;
+    std::string m_Status;
+    bool m_StatusIsSet;
+};
+
+}
+}
+}
+}
+
+#endif /* Pet_H_ */
--- a/samples/server/petstore/cpp-oatpp/model/Tag.cpp
+++ b/samples/server/petstore/cpp-oatpp/model/Tag.cpp
@ -0,0 +1,101 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+
+
+#include "Tag.h"
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace model {
+
+Tag::Tag()
+{
+    m_Id = 0L;
+    m_IdIsSet = false;
+    m_Name = "";
+    m_NameIsSet = false;
+    
+}
+
+Tag::~Tag()
+{
+}
+
+void Tag::validate()
+{
+    // TODO: implement validation
+}
+
+void to_json(nlohmann::json& j, const Tag& o)
+{
+    j = nlohmann::json();
+    if(o.idIsSet())
+        j["id"] = o.m_Id;
+    if(o.nameIsSet())
+        j["name"] = o.m_Name;
+}
+
+void from_json(const nlohmann::json& j, Tag& o)
+{
+    if(j.find("id") != j.end())
+    {
+        j.at("id").get_to(o.m_Id);
+        o.m_IdIsSet = true;
+    } 
+    if(j.find("name") != j.end())
+    {
+        j.at("name").get_to(o.m_Name);
+        o.m_NameIsSet = true;
+    } 
+}
+
+int64_t Tag::getId() const
+{
+    return m_Id;
+}
+void Tag::setId(int64_t const value)
+{
+    m_Id = value;
+    m_IdIsSet = true;
+}
+bool Tag::idIsSet() const
+{
+    return m_IdIsSet;
+}
+void Tag::unsetId()
+{
+    m_IdIsSet = false;
+}
+std::string Tag::getName() const
+{
+    return m_Name;
+}
+void Tag::setName(std::string const& value)
+{
+    m_Name = value;
+    m_NameIsSet = true;
+}
+bool Tag::nameIsSet() const
+{
+    return m_NameIsSet;
+}
+void Tag::unsetName()
+{
+    m_NameIsSet = false;
+}
+
+}
+}
+}
+}
+
--- a/samples/server/petstore/cpp-oatpp/model/Tag.h
+++ b/samples/server/petstore/cpp-oatpp/model/Tag.h
@ -0,0 +1,73 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+/*
+ * Tag.h
+ *
+ * A tag for a pet
+ */
+
+#ifndef Tag_H_
+#define Tag_H_
+
+
+#include <string>
+#include <nlohmann/json.hpp>
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace model {
+
+/// <summary>
+/// A tag for a pet
+/// </summary>
+class  Tag
+{
+public:
+    Tag();
+    virtual ~Tag();
+
+    void validate();
+
+    /////////////////////////////////////////////
+    /// Tag members
+
+    /// <summary>
+    /// 
+    /// </summary>
+    int64_t getId() const;
+    void setId(int64_t const value);
+    bool idIsSet() const;
+    void unsetId();
+    /// <summary>
+    /// 
+    /// </summary>
+    std::string getName() const;
+    void setName(std::string const& value);
+    bool nameIsSet() const;
+    void unsetName();
+
+    friend void to_json(nlohmann::json& j, const Tag& o);
+    friend void from_json(const nlohmann::json& j, Tag& o);
+protected:
+    int64_t m_Id;
+    bool m_IdIsSet;
+    std::string m_Name;
+    bool m_NameIsSet;
+};
+
+}
+}
+}
+}
+
+#endif /* Tag_H_ */
--- a/samples/server/petstore/cpp-oatpp/model/User.cpp
+++ b/samples/server/petstore/cpp-oatpp/model/User.cpp
@ -0,0 +1,257 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+
+
+#include "User.h"
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace model {
+
+User::User()
+{
+    m_Id = 0L;
+    m_IdIsSet = false;
+    m_Username = "";
+    m_UsernameIsSet = false;
+    m_FirstName = "";
+    m_FirstNameIsSet = false;
+    m_LastName = "";
+    m_LastNameIsSet = false;
+    m_Email = "";
+    m_EmailIsSet = false;
+    m_Password = "";
+    m_PasswordIsSet = false;
+    m_Phone = "";
+    m_PhoneIsSet = false;
+    m_UserStatus = 0;
+    m_UserStatusIsSet = false;
+    
+}
+
+User::~User()
+{
+}
+
+void User::validate()
+{
+    // TODO: implement validation
+}
+
+void to_json(nlohmann::json& j, const User& o)
+{
+    j = nlohmann::json();
+    if(o.idIsSet())
+        j["id"] = o.m_Id;
+    if(o.usernameIsSet())
+        j["username"] = o.m_Username;
+    if(o.firstNameIsSet())
+        j["firstName"] = o.m_FirstName;
+    if(o.lastNameIsSet())
+        j["lastName"] = o.m_LastName;
+    if(o.emailIsSet())
+        j["email"] = o.m_Email;
+    if(o.passwordIsSet())
+        j["password"] = o.m_Password;
+    if(o.phoneIsSet())
+        j["phone"] = o.m_Phone;
+    if(o.userStatusIsSet())
+        j["userStatus"] = o.m_UserStatus;
+}
+
+void from_json(const nlohmann::json& j, User& o)
+{
+    if(j.find("id") != j.end())
+    {
+        j.at("id").get_to(o.m_Id);
+        o.m_IdIsSet = true;
+    } 
+    if(j.find("username") != j.end())
+    {
+        j.at("username").get_to(o.m_Username);
+        o.m_UsernameIsSet = true;
+    } 
+    if(j.find("firstName") != j.end())
+    {
+        j.at("firstName").get_to(o.m_FirstName);
+        o.m_FirstNameIsSet = true;
+    } 
+    if(j.find("lastName") != j.end())
+    {
+        j.at("lastName").get_to(o.m_LastName);
+        o.m_LastNameIsSet = true;
+    } 
+    if(j.find("email") != j.end())
+    {
+        j.at("email").get_to(o.m_Email);
+        o.m_EmailIsSet = true;
+    } 
+    if(j.find("password") != j.end())
+    {
+        j.at("password").get_to(o.m_Password);
+        o.m_PasswordIsSet = true;
+    } 
+    if(j.find("phone") != j.end())
+    {
+        j.at("phone").get_to(o.m_Phone);
+        o.m_PhoneIsSet = true;
+    } 
+    if(j.find("userStatus") != j.end())
+    {
+        j.at("userStatus").get_to(o.m_UserStatus);
+        o.m_UserStatusIsSet = true;
+    } 
+}
+
+int64_t User::getId() const
+{
+    return m_Id;
+}
+void User::setId(int64_t const value)
+{
+    m_Id = value;
+    m_IdIsSet = true;
+}
+bool User::idIsSet() const
+{
+    return m_IdIsSet;
+}
+void User::unsetId()
+{
+    m_IdIsSet = false;
+}
+std::string User::getUsername() const
+{
+    return m_Username;
+}
+void User::setUsername(std::string const& value)
+{
+    m_Username = value;
+    m_UsernameIsSet = true;
+}
+bool User::usernameIsSet() const
+{
+    return m_UsernameIsSet;
+}
+void User::unsetUsername()
+{
+    m_UsernameIsSet = false;
+}
+std::string User::getFirstName() const
+{
+    return m_FirstName;
+}
+void User::setFirstName(std::string const& value)
+{
+    m_FirstName = value;
+    m_FirstNameIsSet = true;
+}
+bool User::firstNameIsSet() const
+{
+    return m_FirstNameIsSet;
+}
+void User::unsetFirstName()
+{
+    m_FirstNameIsSet = false;
+}
+std::string User::getLastName() const
+{
+    return m_LastName;
+}
+void User::setLastName(std::string const& value)
+{
+    m_LastName = value;
+    m_LastNameIsSet = true;
+}
+bool User::lastNameIsSet() const
+{
+    return m_LastNameIsSet;
+}
+void User::unsetLastName()
+{
+    m_LastNameIsSet = false;
+}
+std::string User::getEmail() const
+{
+    return m_Email;
+}
+void User::setEmail(std::string const& value)
+{
+    m_Email = value;
+    m_EmailIsSet = true;
+}
+bool User::emailIsSet() const
+{
+    return m_EmailIsSet;
+}
+void User::unsetEmail()
+{
+    m_EmailIsSet = false;
+}
+std::string User::getPassword() const
+{
+    return m_Password;
+}
+void User::setPassword(std::string const& value)
+{
+    m_Password = value;
+    m_PasswordIsSet = true;
+}
+bool User::passwordIsSet() const
+{
+    return m_PasswordIsSet;
+}
+void User::unsetPassword()
+{
+    m_PasswordIsSet = false;
+}
+std::string User::getPhone() const
+{
+    return m_Phone;
+}
+void User::setPhone(std::string const& value)
+{
+    m_Phone = value;
+    m_PhoneIsSet = true;
+}
+bool User::phoneIsSet() const
+{
+    return m_PhoneIsSet;
+}
+void User::unsetPhone()
+{
+    m_PhoneIsSet = false;
+}
+int32_t User::getUserStatus() const
+{
+    return m_UserStatus;
+}
+void User::setUserStatus(int32_t const value)
+{
+    m_UserStatus = value;
+    m_UserStatusIsSet = true;
+}
+bool User::userStatusIsSet() const
+{
+    return m_UserStatusIsSet;
+}
+void User::unsetUserStatus()
+{
+    m_UserStatusIsSet = false;
+}
+
+}
+}
+}
+}
+
--- a/samples/server/petstore/cpp-oatpp/model/User.h
+++ b/samples/server/petstore/cpp-oatpp/model/User.h
@ -0,0 +1,127 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+/*
+ * User.h
+ *
+ * A User who is purchasing from the pet store
+ */
+
+#ifndef User_H_
+#define User_H_
+
+
+#include <string>
+#include <nlohmann/json.hpp>
+
+namespace org {
+namespace openapitools {
+namespace server {
+namespace model {
+
+/// <summary>
+/// A User who is purchasing from the pet store
+/// </summary>
+class  User
+{
+public:
+    User();
+    virtual ~User();
+
+    void validate();
+
+    /////////////////////////////////////////////
+    /// User members
+
+    /// <summary>
+    /// 
+    /// </summary>
+    int64_t getId() const;
+    void setId(int64_t const value);
+    bool idIsSet() const;
+    void unsetId();
+    /// <summary>
+    /// 
+    /// </summary>
+    std::string getUsername() const;
+    void setUsername(std::string const& value);
+    bool usernameIsSet() const;
+    void unsetUsername();
+    /// <summary>
+    /// 
+    /// </summary>
+    std::string getFirstName() const;
+    void setFirstName(std::string const& value);
+    bool firstNameIsSet() const;
+    void unsetFirstName();
+    /// <summary>
+    /// 
+    /// </summary>
+    std::string getLastName() const;
+    void setLastName(std::string const& value);
+    bool lastNameIsSet() const;
+    void unsetLastName();
+    /// <summary>
+    /// 
+    /// </summary>
+    std::string getEmail() const;
+    void setEmail(std::string const& value);
+    bool emailIsSet() const;
+    void unsetEmail();
+    /// <summary>
+    /// 
+    /// </summary>
+    std::string getPassword() const;
+    void setPassword(std::string const& value);
+    bool passwordIsSet() const;
+    void unsetPassword();
+    /// <summary>
+    /// 
+    /// </summary>
+    std::string getPhone() const;
+    void setPhone(std::string const& value);
+    bool phoneIsSet() const;
+    void unsetPhone();
+    /// <summary>
+    /// User Status
+    /// </summary>
+    int32_t getUserStatus() const;
+    void setUserStatus(int32_t const value);
+    bool userStatusIsSet() const;
+    void unsetUserStatus();
+
+    friend void to_json(nlohmann::json& j, const User& o);
+    friend void from_json(const nlohmann::json& j, User& o);
+protected:
+    int64_t m_Id;
+    bool m_IdIsSet;
+    std::string m_Username;
+    bool m_UsernameIsSet;
+    std::string m_FirstName;
+    bool m_FirstNameIsSet;
+    std::string m_LastName;
+    bool m_LastNameIsSet;
+    std::string m_Email;
+    bool m_EmailIsSet;
+    std::string m_Password;
+    bool m_PasswordIsSet;
+    std::string m_Phone;
+    bool m_PhoneIsSet;
+    int32_t m_UserStatus;
+    bool m_UserStatusIsSet;
+};
+
+}
+}
+}
+}
+
+#endif /* User_H_ */