[SPRING] Add converters for enums (#13349)

* [SPRING] Add converters for enums

* Review

* review

* fix merge

* review

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/SpringCodegen.java

@@ -22,11 +22,13 @@ import static org.openapitools.codegen.utils.CamelizeOption.LOWERCASE_FIRST_LETT
 import static org.openapitools.codegen.utils.StringUtils.camelize;
 
 import com.samskivert.mustache.Mustache;
+import io.swagger.v3.oas.models.Components;
 import io.swagger.v3.oas.models.OpenAPI;
 import io.swagger.v3.oas.models.Operation;
 import io.swagger.v3.oas.models.PathItem;
 import io.swagger.v3.oas.models.media.Schema;
 import io.swagger.v3.oas.models.servers.Server;
+
 import java.io.File;
 import java.net.URL;
 import java.util.ArrayList;
@@ -41,6 +43,8 @@ import java.util.Objects;
 import java.util.Set;
 import java.util.regex.Matcher;
 import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
 import org.apache.commons.lang3.tuple.Pair;
 import org.openapitools.codegen.CliOption;
 import org.openapitools.codegen.CodegenConstants;
@@ -498,6 +502,10 @@ public class SpringCodegen extends AbstractJavaCodegen
                 this.setUseFeignClient(true);
             } else {
                 apiTemplateFiles.put("apiController.mustache", "Controller.java");
+                if (containsEnums()) {
+                    supportingFiles.add(new SupportingFile("converter.mustache",
+                            (sourceFolder + File.separator + configPackage).replace(".", java.io.File.separator), "EnumConverterConfiguration.java"));
+                }
                 supportingFiles.add(new SupportingFile("application.mustache",
                         ("src.main.resources").replace(".", java.io.File.separator), "application.properties"));
                 supportingFiles.add(new SupportingFile("homeController.mustache",
@@ -595,6 +603,20 @@ public class SpringCodegen extends AbstractJavaCodegen
         }
     }
 
+    private boolean containsEnums() {
+        if (openAPI == null) {
+            return false;
+        }
+
+        Components components = this.openAPI.getComponents();
+        if (components == null || components.getSchemas() == null) {
+            return  false;
+        }
+
+        return components.getSchemas().values().stream()
+                .anyMatch(it -> it.getEnum() != null && !it.getEnum().isEmpty());
+    }
+
     @Override
     public void addOperationToGroup(String tag, String resourcePath, Operation operation, CodegenOperation co,
             Map<String, List<CodegenOperation>> operations) {

modules/openapi-generator/src/main/resources/JavaSpring/converter.mustache

@@ -0,0 +1,34 @@
+package {{configPackage}};
+
+{{#models}}
+    {{#model}}
+        {{#isEnum}}
+import {{modelPackage}}.{{name}};
+        {{/isEnum}}
+    {{/model}}
+{{/models}}
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.convert.converter.Converter;
+
+@Configuration
+public class EnumConverterConfiguration {
+
+{{#models}}
+{{#model}}
+{{#isEnum}}
+    @Bean
+    Converter<{{{dataType}}}, {{name}}> {{classVarName}}Converter() {
+        return new Converter<{{{dataType}}}, {{name}}>() {
+            @Override
+            public {{name}} convert({{{dataType}}} source) {
+                return {{name}}.fromValue(source);
+            }
+        };
+    }
+{{/isEnum}}
+{{/model}}
+{{/models}}
+
+}

modules/openapi-generator/src/test/java/org/openapitools/codegen/java/spring/SpringCodegenTest.java

@@ -18,6 +18,7 @@
 package org.openapitools.codegen.java.spring;
 
 import static java.util.stream.Collectors.groupingBy;
+import static org.assertj.core.api.Assertions.assertThat;
 import static org.openapitools.codegen.TestUtils.assertFileContains;
 import static org.openapitools.codegen.TestUtils.assertFileNotContains;
 import static org.openapitools.codegen.languages.SpringCodegen.RESPONSE_WRAPPER;
@@ -1214,7 +1215,7 @@ public class SpringCodegenTest {
         generator.opts(input).generate();
 
         File[] generatedModels = new File(outputPath + "/src/main/java/org/openapitools/model").listFiles();
-        Assertions.assertThat(generatedModels).isNotEmpty();
+        assertThat(generatedModels).isNotEmpty();
 
         for (File modelPath : generatedModels) {
             JavaFileAssert.assertThat(modelPath)
@@ -1227,22 +1228,9 @@ public class SpringCodegenTest {
 
     @Test
     public void testHandleDefaultValue_issue8535() throws Exception {
-        File output = Files.createTempDirectory("test").toFile().getCanonicalFile();
+        Map<String, Object> additionalProperties = new HashMap<>();
-        output.deleteOnExit();
+        additionalProperties.put(CXFServerFeatures.LOAD_TEST_DATA_FROM_FILE, "true");
-
+        Map<String, File> files = generateFromContract("src/test/resources/3_0/issue_8535.yaml", SPRING_BOOT, additionalProperties);
-        OpenAPI openAPI = new OpenAPIParser()
-                .readLocation("src/test/resources/3_0/issue_8535.yaml", null, new ParseOptions()).getOpenAPI();
-        SpringCodegen codegen = new SpringCodegen();
-        codegen.setOutputDir(output.getAbsolutePath());
-        codegen.additionalProperties().put(CXFServerFeatures.LOAD_TEST_DATA_FROM_FILE, "true");
-
-        ClientOptInput input = new ClientOptInput()
-                .openAPI(openAPI)
-                .config(codegen);
-
-        DefaultGenerator generator = new DefaultGenerator();
-        Map<String, File> files = generator.opts(input).generate().stream()
-                .collect(Collectors.toMap(File::getName, Function.identity()));
 
         JavaFileAssert.assertThat(files.get("TestHeadersApi.java"))
                 .assertMethod("headersTest")
@@ -1329,29 +1317,15 @@ public class SpringCodegenTest {
 
     @Test
     public void testResponseWithArray_issue11897() throws Exception {
-        File output = Files.createTempDirectory("test").toFile().getCanonicalFile();
+        Map<String, Object> additionalProperties = new HashMap<>();
-        output.deleteOnExit();
+        additionalProperties.put(AbstractJavaCodegen.FULL_JAVA_UTIL, "true");
-
+        additionalProperties.put(SpringCodegen.USE_TAGS, "true");
-        OpenAPI openAPI = new OpenAPIParser()
+        additionalProperties.put(SpringCodegen.INTERFACE_ONLY, "true");
-                .readLocation("src/test/resources/bugs/issue_11897.yaml", null, new ParseOptions()).getOpenAPI();
+        additionalProperties.put(SpringCodegen.SKIP_DEFAULT_INTERFACE, "true");
-        SpringCodegen codegen = new SpringCodegen();
+        additionalProperties.put(SpringCodegen.PERFORM_BEANVALIDATION, "true");
-        codegen.setLibrary(SPRING_BOOT);
+        additionalProperties.put(SpringCodegen.SPRING_CONTROLLER, "true");
-        codegen.setOutputDir(output.getAbsolutePath());
+        additionalProperties.put(CodegenConstants.SERIALIZATION_LIBRARY, "jackson");
-        codegen.additionalProperties().put(AbstractJavaCodegen.FULL_JAVA_UTIL, "true");
+        Map<String, File> files = generateFromContract("src/test/resources/bugs/issue_11897.yaml", SPRING_BOOT, additionalProperties);
-        codegen.additionalProperties().put(SpringCodegen.USE_TAGS, "true");
-        codegen.additionalProperties().put(SpringCodegen.INTERFACE_ONLY, "true");
-        codegen.additionalProperties().put(SpringCodegen.SKIP_DEFAULT_INTERFACE, "true");
-        codegen.additionalProperties().put(SpringCodegen.PERFORM_BEANVALIDATION, "true");
-        codegen.additionalProperties().put(SpringCodegen.SPRING_CONTROLLER, "true");
-        codegen.additionalProperties().put(CodegenConstants.SERIALIZATION_LIBRARY, "jackson");
-
-        ClientOptInput input = new ClientOptInput()
-                .openAPI(openAPI)
-                .config(codegen);
-
-        DefaultGenerator generator = new DefaultGenerator();
-        Map<String, File> files = generator.opts(input).generate().stream()
-                .collect(Collectors.toMap(File::getName, Function.identity()));
 
         JavaFileAssert.assertThat(files.get("MetadataApi.java"))
                 .assertMethod("getWithArrayOfObjects").hasReturnType("ResponseEntity<List<TestResponse>>")
@@ -1369,29 +1343,16 @@ public class SpringCodegenTest {
 
     @Test
     public void shouldSetDefaultValueForMultipleArrayItems() throws IOException {
-        File output = Files.createTempDirectory("test").toFile().getCanonicalFile();
+        Map<String, Object> additionalProperties = new HashMap<>();
-        output.deleteOnExit();
+        additionalProperties.put(AbstractJavaCodegen.FULL_JAVA_UTIL, "true");
+        additionalProperties.put(SpringCodegen.USE_TAGS, "true");
+        additionalProperties.put(SpringCodegen.INTERFACE_ONLY, "true");
+        additionalProperties.put(SpringCodegen.SKIP_DEFAULT_INTERFACE, "true");
+        additionalProperties.put(SpringCodegen.PERFORM_BEANVALIDATION, "true");
+        additionalProperties.put(SpringCodegen.SPRING_CONTROLLER, "true");
+        additionalProperties.put(CodegenConstants.SERIALIZATION_LIBRARY, "jackson");
 
-        OpenAPI openAPI = new OpenAPIParser()
+        Map<String, File> files = generateFromContract("src/test/resources/bugs/issue_11957.yaml", SPRING_BOOT, additionalProperties);
-                .readLocation("src/test/resources/bugs/issue_11957.yaml", null, new ParseOptions()).getOpenAPI();
-        SpringCodegen codegen = new SpringCodegen();
-        codegen.setLibrary(SPRING_BOOT);
-        codegen.setOutputDir(output.getAbsolutePath());
-        codegen.additionalProperties().put(AbstractJavaCodegen.FULL_JAVA_UTIL, "true");
-        codegen.additionalProperties().put(SpringCodegen.USE_TAGS, "true");
-        codegen.additionalProperties().put(SpringCodegen.INTERFACE_ONLY, "true");
-        codegen.additionalProperties().put(SpringCodegen.SKIP_DEFAULT_INTERFACE, "true");
-        codegen.additionalProperties().put(SpringCodegen.PERFORM_BEANVALIDATION, "true");
-        codegen.additionalProperties().put(SpringCodegen.SPRING_CONTROLLER, "true");
-        codegen.additionalProperties().put(CodegenConstants.SERIALIZATION_LIBRARY, "jackson");
-
-        ClientOptInput input = new ClientOptInput()
-                .openAPI(openAPI)
-                .config(codegen);
-
-        DefaultGenerator generator = new DefaultGenerator();
-        Map<String, File> files = generator.opts(input).generate().stream()
-                .collect(Collectors.toMap(File::getName, Function.identity()));
 
         JavaFileAssert.assertThat(files.get("SearchApi.java"))
                 .assertMethod("defaultList")
@@ -1417,21 +1378,7 @@ public class SpringCodegenTest {
 
     @Test
     public void testPutItemsMethodContainsKeyInSuperClassMethodCall_issue12494() throws IOException {
-        File output = Files.createTempDirectory("test").toFile().getCanonicalFile();
+        Map<String, File> files = generateFromContract("src/test/resources/bugs/issue_12494.yaml", null);
-        output.deleteOnExit();
-
-        OpenAPI openAPI = new OpenAPIParser()
-                .readLocation("src/test/resources/bugs/issue_12494.yaml", null, new ParseOptions()).getOpenAPI();
-        SpringCodegen codegen = new SpringCodegen();
-        codegen.setOutputDir(output.getAbsolutePath());
-
-        ClientOptInput input = new ClientOptInput()
-                .openAPI(openAPI)
-                .config(codegen);
-
-        DefaultGenerator generator = new DefaultGenerator();
-        Map<String, File> files = generator.opts(input).generate().stream()
-                .collect(Collectors.toMap(File::getName, Function.identity()));
 
         JavaFileAssert.assertThat(files.get("ChildClass.java"))
                 .assertMethod("putSomeMapItem")
@@ -1440,22 +1387,7 @@ public class SpringCodegenTest {
 
     @Test
     public void shouldHandleCustomResponseType_issue11731() throws IOException {
-        File output = Files.createTempDirectory("test").toFile().getCanonicalFile();
+        Map<String, File> files = generateFromContract("src/test/resources/bugs/issue_11731.yaml", SPRING_BOOT);
-        output.deleteOnExit();
-
-        OpenAPI openAPI = new OpenAPIParser()
-                .readLocation("src/test/resources/bugs/issue_11731.yaml", null, new ParseOptions()).getOpenAPI();
-        SpringCodegen codegen = new SpringCodegen();
-        codegen.setLibrary(SPRING_BOOT);
-        codegen.setOutputDir(output.getAbsolutePath());
-
-        ClientOptInput input = new ClientOptInput()
-                .openAPI(openAPI)
-                .config(codegen);
-
-        DefaultGenerator generator = new DefaultGenerator();
-        Map<String, File> files = generator.opts(input).generate().stream()
-                .collect(Collectors.toMap(File::getName, Function.identity()));
 
         JavaFileAssert.assertThat(files.get("CustomersApi.java"))
                 .assertMethod("getAllUsingGET1")
@@ -1464,23 +1396,9 @@ public class SpringCodegenTest {
 
     @Test
     public void shouldHandleContentTypeWithSecondWildcardSubtype_issue12457() throws IOException {
-        File output = Files.createTempDirectory("test").toFile().getCanonicalFile();
+        Map<String, Object> additionalProperties = new HashMap<>();
-        output.deleteOnExit();
+        additionalProperties.put(SpringCodegen.USE_TAGS, "true");
-
+        Map<String, File> files = generateFromContract("src/test/resources/bugs/issue_12457.yaml", SPRING_BOOT, additionalProperties);
-        OpenAPI openAPI = new OpenAPIParser()
-                .readLocation("src/test/resources/bugs/issue_12457.yaml", null, new ParseOptions()).getOpenAPI();
-        SpringCodegen codegen = new SpringCodegen();
-        codegen.setLibrary(SPRING_BOOT);
-        codegen.setOutputDir(output.getAbsolutePath());
-        codegen.additionalProperties().put(SpringCodegen.USE_TAGS, "true");
-
-        ClientOptInput input = new ClientOptInput()
-                .openAPI(openAPI)
-                .config(codegen);
-
-        DefaultGenerator generator = new DefaultGenerator();
-        Map<String, File> files = generator.opts(input).generate().stream()
-                .collect(Collectors.toMap(File::getName, Function.identity()));
 
         JavaFileAssert.assertThat(files.get("UsersApi.java"))
                 .assertMethod("wildcardSubTypeForContentType")
@@ -1493,28 +1411,15 @@ public class SpringCodegenTest {
 
     @Test
     public void shouldGenerateDiscriminatorFromAllOfWhenUsingLegacyDiscriminatorBehaviour_issue12692() throws IOException {
-        File output = Files.createTempDirectory("test").toFile().getCanonicalFile();
+        Map<String, Object> additionalProperties = new HashMap<>();
-        output.deleteOnExit();
+        additionalProperties.put(CodegenConstants.LEGACY_DISCRIMINATOR_BEHAVIOR, "true");
-
+        Map<String, File> output = generateFromContract("src/test/resources/bugs/issue_12692.yml", SPRING_BOOT, additionalProperties);
-        OpenAPI openAPI = new OpenAPIParser()
-                .readLocation("src/test/resources/bugs/issue_12692.yml", null, new ParseOptions()).getOpenAPI();
-        SpringCodegen codegen = new SpringCodegen();
-        codegen.setLibrary(SPRING_BOOT);
-        codegen.setOutputDir(output.getAbsolutePath());
-        codegen.additionalProperties().put(CodegenConstants.LEGACY_DISCRIMINATOR_BEHAVIOR, "true");
-
-        ClientOptInput input = new ClientOptInput()
-                .openAPI(openAPI)
-                .config(codegen);
-
-        DefaultGenerator generator = new DefaultGenerator();
-        generator.opts(input).generate();
 
         String jsonTypeInfo = "@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.PROPERTY, property = \"type\", visible = true)";
         String jsonSubType = "@JsonSubTypes({\n" +
                 "  @JsonSubTypes.Type(value = Cat.class, name = \"cat\")" +
                 "})";
-        assertFileContains(Paths.get(output.getAbsolutePath() + "/src/main/java/org/openapitools/model/Pet.java"), jsonTypeInfo, jsonSubType);
+        assertFileContains(output.get("Pet.java").toPath(), jsonTypeInfo, jsonSubType);
     }
 
     @Test
@@ -1696,4 +1601,46 @@ public class SpringCodegenTest {
                 .assertMethod("equals")
                 .bodyContainsLines("return Arrays.equals(this.picture, testObject.picture);");
     }
+
+    @Test
+    public void contractWithoutEnumDoesNotContainsEnumConverter() throws IOException {
+        Map<String, File> output = generateFromContract("src/test/resources/3_0/generic.yaml", SPRING_BOOT);
+
+        assertThat(output).doesNotContainKey("EnumConverterConfiguration.java");
+    }
+
+    @Test
+    public void contractWithEnumContainsEnumConverter() throws IOException {
+        Map<String, File> output = generateFromContract("src/test/resources/3_0/enum.yaml", SPRING_BOOT);
+
+        JavaFileAssert.assertThat(output.get("EnumConverterConfiguration.java"))
+                .assertMethod("typeConverter");
+    }
+
+    private Map<String, File> generateFromContract(String url, String library) throws IOException {
+        return generateFromContract(url, library, new HashMap<>());
+    }
+    private Map<String, File> generateFromContract(String url, String library, Map<String, Object> additionalProperties) throws IOException {
+        File output = Files.createTempDirectory("test").toFile().getCanonicalFile();
+        output.deleteOnExit();
+
+        OpenAPI openAPI = new OpenAPIParser()
+                .readLocation(url, null, new ParseOptions()).getOpenAPI();
+
+        SpringCodegen codegen = new SpringCodegen();
+        if (null != library) {
+            codegen.setLibrary(library);
+        }
+        codegen.setOutputDir(output.getAbsolutePath());
+        codegen.additionalProperties().putAll(additionalProperties);
+
+        ClientOptInput input = new ClientOptInput()
+                .openAPI(openAPI)
+                .config(codegen);
+
+        DefaultGenerator generator = new DefaultGenerator();
+
+        return generator.opts(input).generate().stream()
+                .collect(Collectors.toMap(File::getName, Function.identity()));
+    }
 }

modules/openapi-generator/src/test/resources/3_0/enum.yaml

@@ -0,0 +1,32 @@
+openapi: 3.0.0
+info:
+  title: Sample API
+  description: API description in Markdown.
+  version: 1.0.0
+paths:
+  /ponies:
+    get:
+      summary: Returns all animals.
+      description: Optional extended description in Markdown.
+      responses:
+        200:
+          description: OK
+          content:
+            application/json:
+              schema:
+                type: array
+                items:
+                  $ref: '#/components/schemas/Pony'
+components:
+  schemas:
+    Pony:
+      type: object
+      properties:
+        type:
+          $ref: '#/components/schemas/Type'
+    Type:
+      type: string
+      enum:
+        - Earth
+        - Pegasi
+        - Unicorn

samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/.openapi-generator/FILES

@@ -15,6 +15,7 @@ src/main/java/org/openapitools/api/StoreApi.java
 src/main/java/org/openapitools/api/StoreApiController.java
 src/main/java/org/openapitools/api/UserApi.java
 src/main/java/org/openapitools/api/UserApiController.java
+src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java
 src/main/java/org/openapitools/configuration/HomeController.java
 src/main/java/org/openapitools/configuration/SpringDocConfiguration.java
 src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java

samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java

@@ -0,0 +1,32 @@
+package org.openapitools.configuration;
+
+import org.openapitools.model.EnumClass;
+import org.openapitools.model.OuterEnum;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.convert.converter.Converter;
+
+@Configuration
+public class EnumConverterConfiguration {
+
+    @Bean
+    Converter<String, EnumClass> enumClassConverter() {
+        return new Converter<String, EnumClass>() {
+            @Override
+            public EnumClass convert(String source) {
+                return EnumClass.fromValue(source);
+            }
+        };
+    }
+    @Bean
+    Converter<String, OuterEnum> outerEnumConverter() {
+        return new Converter<String, OuterEnum>() {
+            @Override
+            public OuterEnum convert(String source) {
+                return OuterEnum.fromValue(source);
+            }
+        };
+    }
+
+}

samples/openapi3/server/petstore/springboot-delegate/.openapi-generator/FILES

@@ -21,6 +21,7 @@ src/main/java/org/openapitools/api/StoreApiDelegate.java
 src/main/java/org/openapitools/api/UserApi.java
 src/main/java/org/openapitools/api/UserApiController.java
 src/main/java/org/openapitools/api/UserApiDelegate.java
+src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java
 src/main/java/org/openapitools/configuration/HomeController.java
 src/main/java/org/openapitools/configuration/SpringDocConfiguration.java
 src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java

samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java

@@ -0,0 +1,32 @@
+package org.openapitools.configuration;
+
+import org.openapitools.model.EnumClass;
+import org.openapitools.model.OuterEnum;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.convert.converter.Converter;
+
+@Configuration
+public class EnumConverterConfiguration {
+
+    @Bean
+    Converter<String, EnumClass> enumClassConverter() {
+        return new Converter<String, EnumClass>() {
+            @Override
+            public EnumClass convert(String source) {
+                return EnumClass.fromValue(source);
+            }
+        };
+    }
+    @Bean
+    Converter<String, OuterEnum> outerEnumConverter() {
+        return new Converter<String, OuterEnum>() {
+            @Override
+            public OuterEnum convert(String source) {
+                return OuterEnum.fromValue(source);
+            }
+        };
+    }
+
+}

samples/openapi3/server/petstore/springboot-implicitHeaders/.openapi-generator/FILES

@@ -15,6 +15,7 @@ src/main/java/org/openapitools/api/StoreApi.java
 src/main/java/org/openapitools/api/StoreApiController.java
 src/main/java/org/openapitools/api/UserApi.java
 src/main/java/org/openapitools/api/UserApiController.java
+src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java
 src/main/java/org/openapitools/configuration/HomeController.java
 src/main/java/org/openapitools/configuration/SpringDocConfiguration.java
 src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java

samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java

@@ -0,0 +1,32 @@
+package org.openapitools.configuration;
+
+import org.openapitools.model.EnumClass;
+import org.openapitools.model.OuterEnum;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.convert.converter.Converter;
+
+@Configuration
+public class EnumConverterConfiguration {
+
+    @Bean
+    Converter<String, EnumClass> enumClassConverter() {
+        return new Converter<String, EnumClass>() {
+            @Override
+            public EnumClass convert(String source) {
+                return EnumClass.fromValue(source);
+            }
+        };
+    }
+    @Bean
+    Converter<String, OuterEnum> outerEnumConverter() {
+        return new Converter<String, OuterEnum>() {
+            @Override
+            public OuterEnum convert(String source) {
+                return OuterEnum.fromValue(source);
+            }
+        };
+    }
+
+}

samples/openapi3/server/petstore/springboot-reactive/.openapi-generator/FILES

@@ -21,6 +21,7 @@ src/main/java/org/openapitools/api/StoreApiDelegate.java
 src/main/java/org/openapitools/api/UserApi.java
 src/main/java/org/openapitools/api/UserApiController.java
 src/main/java/org/openapitools/api/UserApiDelegate.java
+src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java
 src/main/java/org/openapitools/configuration/HomeController.java
 src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
 src/main/java/org/openapitools/model/AdditionalPropertiesArray.java

samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java

@@ -0,0 +1,32 @@
+package org.openapitools.configuration;
+
+import org.openapitools.model.EnumClass;
+import org.openapitools.model.OuterEnum;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.convert.converter.Converter;
+
+@Configuration
+public class EnumConverterConfiguration {
+
+    @Bean
+    Converter<String, EnumClass> enumClassConverter() {
+        return new Converter<String, EnumClass>() {
+            @Override
+            public EnumClass convert(String source) {
+                return EnumClass.fromValue(source);
+            }
+        };
+    }
+    @Bean
+    Converter<String, OuterEnum> outerEnumConverter() {
+        return new Converter<String, OuterEnum>() {
+            @Override
+            public OuterEnum convert(String source) {
+                return OuterEnum.fromValue(source);
+            }
+        };
+    }
+
+}

samples/openapi3/server/petstore/springboot-useoptional/.openapi-generator/FILES

@@ -15,6 +15,7 @@ src/main/java/org/openapitools/api/StoreApi.java
 src/main/java/org/openapitools/api/StoreApiController.java
 src/main/java/org/openapitools/api/UserApi.java
 src/main/java/org/openapitools/api/UserApiController.java
+src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java
 src/main/java/org/openapitools/configuration/HomeController.java
 src/main/java/org/openapitools/configuration/SpringDocConfiguration.java
 src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java

samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java

@@ -0,0 +1,32 @@
+package org.openapitools.configuration;
+
+import org.openapitools.model.EnumClass;
+import org.openapitools.model.OuterEnum;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.convert.converter.Converter;
+
+@Configuration
+public class EnumConverterConfiguration {
+
+    @Bean
+    Converter<String, EnumClass> enumClassConverter() {
+        return new Converter<String, EnumClass>() {
+            @Override
+            public EnumClass convert(String source) {
+                return EnumClass.fromValue(source);
+            }
+        };
+    }
+    @Bean
+    Converter<String, OuterEnum> outerEnumConverter() {
+        return new Converter<String, OuterEnum>() {
+            @Override
+            public OuterEnum convert(String source) {
+                return OuterEnum.fromValue(source);
+            }
+        };
+    }
+
+}

samples/server/petstore/springboot-beanvalidation-no-nullable/.openapi-generator/FILES

@@ -15,6 +15,7 @@ src/main/java/org/openapitools/api/StoreApi.java
 src/main/java/org/openapitools/api/StoreApiController.java
 src/main/java/org/openapitools/api/UserApi.java
 src/main/java/org/openapitools/api/UserApiController.java
+src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java
 src/main/java/org/openapitools/configuration/HomeController.java
 src/main/java/org/openapitools/configuration/SpringFoxConfiguration.java
 src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java

samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java

@@ -0,0 +1,32 @@
+package org.openapitools.configuration;
+
+import org.openapitools.model.EnumClass;
+import org.openapitools.model.OuterEnum;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.convert.converter.Converter;
+
+@Configuration
+public class EnumConverterConfiguration {
+
+    @Bean
+    Converter<String, EnumClass> enumClassConverter() {
+        return new Converter<String, EnumClass>() {
+            @Override
+            public EnumClass convert(String source) {
+                return EnumClass.fromValue(source);
+            }
+        };
+    }
+    @Bean
+    Converter<String, OuterEnum> outerEnumConverter() {
+        return new Converter<String, OuterEnum>() {
+            @Override
+            public OuterEnum convert(String source) {
+                return OuterEnum.fromValue(source);
+            }
+        };
+    }
+
+}

samples/server/petstore/springboot-beanvalidation/.openapi-generator/FILES

@@ -15,6 +15,7 @@ src/main/java/org/openapitools/api/StoreApi.java
 src/main/java/org/openapitools/api/StoreApiController.java
 src/main/java/org/openapitools/api/UserApi.java
 src/main/java/org/openapitools/api/UserApiController.java
+src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java
 src/main/java/org/openapitools/configuration/HomeController.java
 src/main/java/org/openapitools/configuration/SpringFoxConfiguration.java
 src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java

samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java

@@ -0,0 +1,32 @@
+package org.openapitools.configuration;
+
+import org.openapitools.model.EnumClass;
+import org.openapitools.model.OuterEnum;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.convert.converter.Converter;
+
+@Configuration
+public class EnumConverterConfiguration {
+
+    @Bean
+    Converter<String, EnumClass> enumClassConverter() {
+        return new Converter<String, EnumClass>() {
+            @Override
+            public EnumClass convert(String source) {
+                return EnumClass.fromValue(source);
+            }
+        };
+    }
+    @Bean
+    Converter<String, OuterEnum> outerEnumConverter() {
+        return new Converter<String, OuterEnum>() {
+            @Override
+            public OuterEnum convert(String source) {
+                return OuterEnum.fromValue(source);
+            }
+        };
+    }
+
+}

samples/server/petstore/springboot-delegate-j8/.openapi-generator/FILES

@@ -21,6 +21,7 @@ src/main/java/org/openapitools/api/StoreApiDelegate.java
 src/main/java/org/openapitools/api/UserApi.java
 src/main/java/org/openapitools/api/UserApiController.java
 src/main/java/org/openapitools/api/UserApiDelegate.java
+src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java
 src/main/java/org/openapitools/configuration/HomeController.java
 src/main/java/org/openapitools/configuration/SpringFoxConfiguration.java
 src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java

samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java

@@ -0,0 +1,32 @@
+package org.openapitools.configuration;
+
+import org.openapitools.model.EnumClass;
+import org.openapitools.model.OuterEnum;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.convert.converter.Converter;
+
+@Configuration
+public class EnumConverterConfiguration {
+
+    @Bean
+    Converter<String, EnumClass> enumClassConverter() {
+        return new Converter<String, EnumClass>() {
+            @Override
+            public EnumClass convert(String source) {
+                return EnumClass.fromValue(source);
+            }
+        };
+    }
+    @Bean
+    Converter<String, OuterEnum> outerEnumConverter() {
+        return new Converter<String, OuterEnum>() {
+            @Override
+            public OuterEnum convert(String source) {
+                return OuterEnum.fromValue(source);
+            }
+        };
+    }
+
+}

samples/server/petstore/springboot-delegate/.openapi-generator/FILES

@@ -21,6 +21,7 @@ src/main/java/org/openapitools/api/StoreApiDelegate.java
 src/main/java/org/openapitools/api/UserApi.java
 src/main/java/org/openapitools/api/UserApiController.java
 src/main/java/org/openapitools/api/UserApiDelegate.java
+src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java
 src/main/java/org/openapitools/configuration/HomeController.java
 src/main/java/org/openapitools/configuration/SpringFoxConfiguration.java
 src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java

samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java

@@ -0,0 +1,32 @@
+package org.openapitools.configuration;
+
+import org.openapitools.model.EnumClass;
+import org.openapitools.model.OuterEnum;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.convert.converter.Converter;
+
+@Configuration
+public class EnumConverterConfiguration {
+
+    @Bean
+    Converter<String, EnumClass> enumClassConverter() {
+        return new Converter<String, EnumClass>() {
+            @Override
+            public EnumClass convert(String source) {
+                return EnumClass.fromValue(source);
+            }
+        };
+    }
+    @Bean
+    Converter<String, OuterEnum> outerEnumConverter() {
+        return new Converter<String, OuterEnum>() {
+            @Override
+            public OuterEnum convert(String source) {
+                return OuterEnum.fromValue(source);
+            }
+        };
+    }
+
+}

samples/server/petstore/springboot-implicitHeaders/.openapi-generator/FILES

@@ -15,6 +15,7 @@ src/main/java/org/openapitools/api/StoreApi.java
 src/main/java/org/openapitools/api/StoreApiController.java
 src/main/java/org/openapitools/api/UserApi.java
 src/main/java/org/openapitools/api/UserApiController.java
+src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java
 src/main/java/org/openapitools/configuration/HomeController.java
 src/main/java/org/openapitools/configuration/SpringFoxConfiguration.java
 src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java

samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java

@@ -0,0 +1,32 @@
+package org.openapitools.configuration;
+
+import org.openapitools.model.EnumClass;
+import org.openapitools.model.OuterEnum;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.convert.converter.Converter;
+
+@Configuration
+public class EnumConverterConfiguration {
+
+    @Bean
+    Converter<String, EnumClass> enumClassConverter() {
+        return new Converter<String, EnumClass>() {
+            @Override
+            public EnumClass convert(String source) {
+                return EnumClass.fromValue(source);
+            }
+        };
+    }
+    @Bean
+    Converter<String, OuterEnum> outerEnumConverter() {
+        return new Converter<String, OuterEnum>() {
+            @Override
+            public OuterEnum convert(String source) {
+                return OuterEnum.fromValue(source);
+            }
+        };
+    }
+
+}

samples/server/petstore/springboot-reactive/.openapi-generator/FILES

@@ -21,6 +21,7 @@ src/main/java/org/openapitools/api/StoreApiDelegate.java
 src/main/java/org/openapitools/api/UserApi.java
 src/main/java/org/openapitools/api/UserApiController.java
 src/main/java/org/openapitools/api/UserApiDelegate.java
+src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java
 src/main/java/org/openapitools/configuration/HomeController.java
 src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
 src/main/java/org/openapitools/model/AdditionalPropertiesArray.java

samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java

@@ -0,0 +1,32 @@
+package org.openapitools.configuration;
+
+import org.openapitools.model.EnumClass;
+import org.openapitools.model.OuterEnum;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.convert.converter.Converter;
+
+@Configuration
+public class EnumConverterConfiguration {
+
+    @Bean
+    Converter<String, EnumClass> enumClassConverter() {
+        return new Converter<String, EnumClass>() {
+            @Override
+            public EnumClass convert(String source) {
+                return EnumClass.fromValue(source);
+            }
+        };
+    }
+    @Bean
+    Converter<String, OuterEnum> outerEnumConverter() {
+        return new Converter<String, OuterEnum>() {
+            @Override
+            public OuterEnum convert(String source) {
+                return OuterEnum.fromValue(source);
+            }
+        };
+    }
+
+}

samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/.openapi-generator/FILES

@@ -21,6 +21,7 @@ src/main/java/org/openapitools/api/StoreApiDelegate.java
 src/main/java/org/openapitools/api/UserApi.java
 src/main/java/org/openapitools/api/UserApiController.java
 src/main/java/org/openapitools/api/UserApiDelegate.java
+src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java
 src/main/java/org/openapitools/configuration/HomeController.java
 src/main/java/org/openapitools/configuration/SpringFoxConfiguration.java
 src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java

samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java

@@ -0,0 +1,32 @@
+package org.openapitools.configuration;
+
+import org.openapitools.model.EnumClass;
+import org.openapitools.model.OuterEnum;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.convert.converter.Converter;
+
+@Configuration
+public class EnumConverterConfiguration {
+
+    @Bean
+    Converter<String, EnumClass> enumClassConverter() {
+        return new Converter<String, EnumClass>() {
+            @Override
+            public EnumClass convert(String source) {
+                return EnumClass.fromValue(source);
+            }
+        };
+    }
+    @Bean
+    Converter<String, OuterEnum> outerEnumConverter() {
+        return new Converter<String, OuterEnum>() {
+            @Override
+            public OuterEnum convert(String source) {
+                return OuterEnum.fromValue(source);
+            }
+        };
+    }
+
+}

samples/server/petstore/springboot-spring-pageable-delegatePattern/.openapi-generator/FILES

@@ -21,6 +21,7 @@ src/main/java/org/openapitools/api/StoreApiDelegate.java
 src/main/java/org/openapitools/api/UserApi.java
 src/main/java/org/openapitools/api/UserApiController.java
 src/main/java/org/openapitools/api/UserApiDelegate.java
+src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java
 src/main/java/org/openapitools/configuration/HomeController.java
 src/main/java/org/openapitools/configuration/SpringFoxConfiguration.java
 src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java

samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java

@@ -0,0 +1,32 @@
+package org.openapitools.configuration;
+
+import org.openapitools.model.EnumClass;
+import org.openapitools.model.OuterEnum;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.convert.converter.Converter;
+
+@Configuration
+public class EnumConverterConfiguration {
+
+    @Bean
+    Converter<String, EnumClass> enumClassConverter() {
+        return new Converter<String, EnumClass>() {
+            @Override
+            public EnumClass convert(String source) {
+                return EnumClass.fromValue(source);
+            }
+        };
+    }
+    @Bean
+    Converter<String, OuterEnum> outerEnumConverter() {
+        return new Converter<String, OuterEnum>() {
+            @Override
+            public OuterEnum convert(String source) {
+                return OuterEnum.fromValue(source);
+            }
+        };
+    }
+
+}

samples/server/petstore/springboot-spring-pageable-without-j8/.openapi-generator/FILES

@@ -15,6 +15,7 @@ src/main/java/org/openapitools/api/StoreApi.java
 src/main/java/org/openapitools/api/StoreApiController.java
 src/main/java/org/openapitools/api/UserApi.java
 src/main/java/org/openapitools/api/UserApiController.java
+src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java
 src/main/java/org/openapitools/configuration/HomeController.java
 src/main/java/org/openapitools/configuration/SpringFoxConfiguration.java
 src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java

samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java

@@ -0,0 +1,32 @@
+package org.openapitools.configuration;
+
+import org.openapitools.model.EnumClass;
+import org.openapitools.model.OuterEnum;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.convert.converter.Converter;
+
+@Configuration
+public class EnumConverterConfiguration {
+
+    @Bean
+    Converter<String, EnumClass> enumClassConverter() {
+        return new Converter<String, EnumClass>() {
+            @Override
+            public EnumClass convert(String source) {
+                return EnumClass.fromValue(source);
+            }
+        };
+    }
+    @Bean
+    Converter<String, OuterEnum> outerEnumConverter() {
+        return new Converter<String, OuterEnum>() {
+            @Override
+            public OuterEnum convert(String source) {
+                return OuterEnum.fromValue(source);
+            }
+        };
+    }
+
+}

samples/server/petstore/springboot-spring-pageable/.openapi-generator/FILES

@@ -15,6 +15,7 @@ src/main/java/org/openapitools/api/StoreApi.java
 src/main/java/org/openapitools/api/StoreApiController.java
 src/main/java/org/openapitools/api/UserApi.java
 src/main/java/org/openapitools/api/UserApiController.java
+src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java
 src/main/java/org/openapitools/configuration/HomeController.java
 src/main/java/org/openapitools/configuration/SpringFoxConfiguration.java
 src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java

samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java

@@ -0,0 +1,32 @@
+package org.openapitools.configuration;
+
+import org.openapitools.model.EnumClass;
+import org.openapitools.model.OuterEnum;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.convert.converter.Converter;
+
+@Configuration
+public class EnumConverterConfiguration {
+
+    @Bean
+    Converter<String, EnumClass> enumClassConverter() {
+        return new Converter<String, EnumClass>() {
+            @Override
+            public EnumClass convert(String source) {
+                return EnumClass.fromValue(source);
+            }
+        };
+    }
+    @Bean
+    Converter<String, OuterEnum> outerEnumConverter() {
+        return new Converter<String, OuterEnum>() {
+            @Override
+            public OuterEnum convert(String source) {
+                return OuterEnum.fromValue(source);
+            }
+        };
+    }
+
+}

samples/server/petstore/springboot-useoptional/.openapi-generator/FILES

@@ -15,6 +15,7 @@ src/main/java/org/openapitools/api/StoreApi.java
 src/main/java/org/openapitools/api/StoreApiController.java
 src/main/java/org/openapitools/api/UserApi.java
 src/main/java/org/openapitools/api/UserApiController.java
+src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java
 src/main/java/org/openapitools/configuration/HomeController.java
 src/main/java/org/openapitools/configuration/SpringFoxConfiguration.java
 src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java

samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java

@@ -0,0 +1,32 @@
+package org.openapitools.configuration;
+
+import org.openapitools.model.EnumClass;
+import org.openapitools.model.OuterEnum;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.convert.converter.Converter;
+
+@Configuration
+public class EnumConverterConfiguration {
+
+    @Bean
+    Converter<String, EnumClass> enumClassConverter() {
+        return new Converter<String, EnumClass>() {
+            @Override
+            public EnumClass convert(String source) {
+                return EnumClass.fromValue(source);
+            }
+        };
+    }
+    @Bean
+    Converter<String, OuterEnum> outerEnumConverter() {
+        return new Converter<String, OuterEnum>() {
+            @Override
+            public OuterEnum convert(String source) {
+                return OuterEnum.fromValue(source);
+            }
+        };
+    }
+
+}

samples/server/petstore/springboot-virtualan/.openapi-generator/FILES

@@ -2,6 +2,7 @@ README.md
 pom.xml
 src/main/java/org/openapitools/OpenApiGeneratorApplication.java
 src/main/java/org/openapitools/RFC3339DateFormat.java
+src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java
 src/main/java/org/openapitools/configuration/HomeController.java
 src/main/java/org/openapitools/configuration/SpringDocConfiguration.java
 src/main/java/org/openapitools/virtualan/api/AnotherFakeApi.java

samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java

@@ -0,0 +1,32 @@
+package org.openapitools.configuration;
+
+import org.openapitools.virtualan.model.EnumClass;
+import org.openapitools.virtualan.model.OuterEnum;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.convert.converter.Converter;
+
+@Configuration
+public class EnumConverterConfiguration {
+
+    @Bean
+    Converter<String, EnumClass> enumClassConverter() {
+        return new Converter<String, EnumClass>() {
+            @Override
+            public EnumClass convert(String source) {
+                return EnumClass.fromValue(source);
+            }
+        };
+    }
+    @Bean
+    Converter<String, OuterEnum> outerEnumConverter() {
+        return new Converter<String, OuterEnum>() {
+            @Override
+            public OuterEnum convert(String source) {
+                return OuterEnum.fromValue(source);
+            }
+        };
+    }
+
+}

samples/server/petstore/springboot/.openapi-generator/FILES

@@ -15,6 +15,7 @@ src/main/java/org/openapitools/api/StoreApi.java
 src/main/java/org/openapitools/api/StoreApiController.java
 src/main/java/org/openapitools/api/UserApi.java
 src/main/java/org/openapitools/api/UserApiController.java
+src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java
 src/main/java/org/openapitools/configuration/HomeController.java
 src/main/java/org/openapitools/configuration/SpringFoxConfiguration.java
 src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java

samples/server/petstore/springboot/src/main/java/org/openapitools/configuration/EnumConverterConfiguration.java

@@ -0,0 +1,32 @@
+package org.openapitools.configuration;
+
+import org.openapitools.model.EnumClass;
+import org.openapitools.model.OuterEnum;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.convert.converter.Converter;
+
+@Configuration
+public class EnumConverterConfiguration {
+
+    @Bean
+    Converter<String, EnumClass> enumClassConverter() {
+        return new Converter<String, EnumClass>() {
+            @Override
+            public EnumClass convert(String source) {
+                return EnumClass.fromValue(source);
+            }
+        };
+    }
+    @Bean
+    Converter<String, OuterEnum> outerEnumConverter() {
+        return new Converter<String, OuterEnum>() {
+            @Override
+            public OuterEnum convert(String source) {
+                return OuterEnum.fromValue(source);
+            }
+        };
+    }
+
+}