Add constructor with required parameter for Spring (#14822) (fix #9789)

* Add constructor with required parameter for spring

Fix #9789

* [Java][Spring] constructor with required args

---------

Co-authored-by: Oleh Kurpiak <oleh.kurpiak@gmail.com>

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

@@ -75,6 +75,7 @@ public class CodegenModel implements IJsonSchemaValidationProperties {
     public List<CodegenProperty> readOnlyVars = new ArrayList<>(); // a list of read-only properties
     public List<CodegenProperty> readWriteVars = new ArrayList<>(); // a list of properties for read, write
     public List<CodegenProperty> parentVars = new ArrayList<>();
+    public List<CodegenProperty> parentRequiredVars = new ArrayList<>();
     public List<CodegenProperty> nonNullableVars = new ArrayList<>(); // a list of non-nullable properties
     public Map<String, Object> allowableValues;
 

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

@@ -1078,6 +1078,10 @@ public class SpringCodegen extends AbstractJavaCodegen
                                     codegenModel.getImports().add(imp);
                                 }
                             }
+
+                            if (property.required) {
+                                codegenModel.parentRequiredVars.add(parentVar.clone());
+                            }
                         }
                     }
                     parentCodegenModel = parentCodegenModel.getParentModel();

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

@@ -80,6 +80,36 @@ public class {{classname}}{{#parent}} extends {{{parent}}}{{/parent}}{{^parent}}
   {{/openApiNullable}}
   {{/isContainer}}
   {{/vars}}
+  {{#hasRequired}}
+
+  /**
+   * Default constructor
+   * @deprecated Use {@link {{classname}}#{{classname}}({{#requiredVars}}{{{datatypeWithEnum}}}{{^-last}}, {{/-last}}{{/requiredVars}})}
+   */
+  @Deprecated
+  public {{classname}}() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public {{classname}}({{#requiredVars}}{{{datatypeWithEnum}}} {{name}}{{^-last}}, {{/-last}}{{/requiredVars}}) {
+    {{#parent}}
+    super({{#parentRequiredVars}}{{name}}{{^-last}}, {{/-last}}{{/parentRequiredVars}});
+    {{/parent}}
+    {{#vars}}
+    {{#required}}
+    {{#openApiNullable}}
+    this.{{name}} = {{#isNullable}}JsonNullable.of({{name}}){{/isNullable}}{{^isNullable}}{{name}}{{/isNullable}};
+    {{/openApiNullable}}
+    {{^openApiNullable}}
+    this.{{name}} = {{name}};
+    {{/openApiNullable}}
+    {{/required}}
+    {{/vars}}
+  }
+  {{/hasRequired}}
   {{#vars}}
 
   {{! begin feature: fluent setter methods }}

modules/openapi-generator/src/test/java/org/openapitools/codegen/java/assertions/JavaFileAssert.java

@@ -95,6 +95,15 @@ public class JavaFileAssert extends AbstractAssert<JavaFileAssert, CompilationUn
         return new ConstructorAssert(this, constructorDeclaration.get());
     }
 
+    public JavaFileAssert assertNoConstructor(final String... paramTypes) {
+        Optional<ConstructorDeclaration> constructorDeclaration = actual.getType(0).getConstructorByParameterTypes(paramTypes);
+        Assertions.assertThat(constructorDeclaration)
+                .withFailMessage("Found constructor with parameter(s) %s", Arrays.toString(paramTypes))
+                .isEmpty();
+
+        return this;
+    }
+
     public PropertyAssert hasProperty(final String propertyName) {
         Optional<FieldDeclaration> fieldOptional = actual.getType(0).getMembers().stream()
             .filter(FieldDeclaration.class::isInstance)

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

@@ -27,7 +27,6 @@ import static org.openapitools.codegen.languages.features.DocumentationProviderF
 import static org.testng.Assert.assertEquals;
 import static org.testng.Assert.fail;
 
-import com.github.javaparser.ast.nodeTypes.NodeWithName;
 import io.swagger.parser.OpenAPIParser;
 import io.swagger.v3.oas.models.OpenAPI;
 import io.swagger.v3.oas.models.Operation;
@@ -45,8 +44,6 @@ import java.util.function.Consumer;
 import java.util.function.Function;
 import java.util.stream.Collectors;
 
-import javax.validation.Valid;
-
 import org.openapitools.codegen.config.GlobalSettings;
 import org.openapitools.codegen.java.assertions.JavaFileAssert;
 import org.openapitools.codegen.CliOption;
@@ -2041,6 +2038,25 @@ public class SpringCodegenTest {
         assertFileContains(output.get("PersonApi.java").toPath(), interfaceTag, methodTag);
     }
 
+    @Test
+    public void shouldGenerateConstructorWithOnlyRequiredParameters() throws IOException {
+        final Map<String, File> output = generateFromContract("src/test/resources/3_0/spring/issue_9789.yml", SPRING_BOOT);
+
+        JavaFileAssert.assertThat(output.get("ObjectWithNoRequiredParameter.java")).assertNoConstructor("String");
+
+        JavaFileAssert.assertThat(output.get("ObjectWithRequiredParameter.java")).assertConstructor();
+        JavaFileAssert.assertThat(output.get("ObjectWithRequiredParameter.java")).assertConstructor("String", "String")
+                .hasParameter("param2").toConstructor()
+                .hasParameter("param3");
+
+        JavaFileAssert.assertThat(output.get("ObjectWithInheritedRequiredParameter.java")).assertConstructor();
+        JavaFileAssert.assertThat(output.get("ObjectWithInheritedRequiredParameter.java")).assertConstructor("Integer", "String", "String")
+                .hasParameter("param2").toConstructor()
+                .hasParameter("param3").toConstructor()
+                .hasParameter("param6").toConstructor()
+                .bodyContainsLines("super(param2, param3)", "this.param6 = param6");
+    }
+
     private Map<String, File> generateFromContract(String url, String library) throws IOException {
         return generateFromContract(url, library, new HashMap<>());
     }

modules/openapi-generator/src/test/resources/3_0/spring/issue_9789.yml

@@ -0,0 +1,52 @@
+openapi: 3.0.1
+info:
+  title: Test Issue #9789
+  version: v1
+paths:
+  /test:
+    get:
+      responses:
+        '200':
+          description: default response
+          content:
+            '*/*':
+              schema:
+                $ref: '#/components/schemas/ObjectWithNoRequiredParameter'
+components:
+  schemas:
+    ObjectWithNoRequiredParameter:
+      type: object
+      properties:
+        param1:
+          type: string
+    ObjectWithRequiredParameter:
+      type: object
+      properties:
+        param1:
+          type: string
+        param2:
+          type: string
+        param3:
+          type: string
+          nullable: true
+        param4:
+          type: string
+      required:
+        - param2
+        - param3
+      discriminator:
+        propertyName: param1
+    ObjectWithInheritedRequiredParameter:
+      allOf:
+        - $ref: '#/components/schemas/ObjectWithRequiredParameter'
+        - type: object
+          properties:
+            param5:
+              type: boolean
+            param6:
+              type: integer
+            param7:
+              type: number
+          required:
+            - param6
+

samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Pet.java

@@ -85,6 +85,23 @@ public class Pet {
   @JsonProperty("status")
   private StatusEnum status;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Pet#Pet(String, List<String>)}
+   */
+  @Deprecated
+  public Pet() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Pet(String name, List<String> photoUrls) {
+    this.name = name;
+    this.photoUrls = photoUrls;
+  }
+
   public Pet id(Long id) {
     this.id = id;
     return this;

samples/client/petstore/spring-cloud-date-time/src/main/java/org/openapitools/model/Pet.java

@@ -46,6 +46,22 @@ public class Pet {
   @DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
   private LocalDate dateOfBirth = LocalDate.parse("2021-01-01");
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Pet#Pet(String)}
+   */
+  @Deprecated
+  public Pet() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Pet(String atType) {
+    this.atType = atType;
+  }
+
   public Pet atType(String atType) {
     this.atType = atType;
     return this;

samples/client/petstore/spring-cloud-feign-without-url/src/main/java/org/openapitools/model/Pet.java

@@ -85,6 +85,23 @@ public class Pet {
   @JsonProperty("status")
   private StatusEnum status;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Pet#Pet(String, List<String>)}
+   */
+  @Deprecated
+  public Pet() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Pet(String name, List<String> photoUrls) {
+    this.name = name;
+    this.photoUrls = photoUrls;
+  }
+
   public Pet id(Long id) {
     this.id = id;
     return this;

samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Pet.java

@@ -85,6 +85,23 @@ public class Pet {
   @JsonProperty("status")
   private StatusEnum status;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Pet#Pet(String, List<String>)}
+   */
+  @Deprecated
+  public Pet() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Pet(String name, List<String> photoUrls) {
+    this.name = name;
+    this.photoUrls = photoUrls;
+  }
+
   public Pet id(Long id) {
     this.id = id;
     return this;

samples/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Pet.java

@@ -85,6 +85,23 @@ public class Pet {
   @JsonProperty("status")
   private StatusEnum status;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Pet#Pet(String, List<String>)}
+   */
+  @Deprecated
+  public Pet() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Pet(String name, List<String> photoUrls) {
+    this.name = name;
+    this.photoUrls = photoUrls;
+  }
+
   public Pet id(Long id) {
     this.id = id;
     return this;

samples/client/petstore/spring-http-interface-reactive/src/main/java/org/openapitools/model/Animal.java

@@ -42,6 +42,22 @@ public class Animal {
   @JsonProperty("color")
   private String color = "red";
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Animal#Animal(String)}
+   */
+  @Deprecated
+  public Animal() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Animal(String className) {
+    this.className = className;
+  }
+
   public Animal className(String className) {
     this.className = className;
     return this;

samples/client/petstore/spring-http-interface-reactive/src/main/java/org/openapitools/model/BigCat.java

@@ -67,6 +67,22 @@ public class BigCat extends Cat {
   @JsonProperty("kind")
   private KindEnum kind;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link BigCat#BigCat(String)}
+   */
+  @Deprecated
+  public BigCat() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public BigCat(String className) {
+    super(className);
+  }
+
   public BigCat kind(KindEnum kind) {
     this.kind = kind;
     return this;

samples/client/petstore/spring-http-interface-reactive/src/main/java/org/openapitools/model/Cat.java

@@ -36,6 +36,22 @@ public class Cat extends Animal {
   @JsonProperty("declawed")
   private Boolean declawed;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Cat#Cat(String)}
+   */
+  @Deprecated
+  public Cat() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Cat(String className) {
+    super(className);
+  }
+
   public Cat declawed(Boolean declawed) {
     this.declawed = declawed;
     return this;

samples/client/petstore/spring-http-interface-reactive/src/main/java/org/openapitools/model/Category.java

@@ -25,6 +25,22 @@ public class Category {
   @JsonProperty("name")
   private String name = "default-name";
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Category#Category(String)}
+   */
+  @Deprecated
+  public Category() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Category(String name) {
+    this.name = name;
+  }
+
   public Category id(Long id) {
     this.id = id;
     return this;

samples/client/petstore/spring-http-interface-reactive/src/main/java/org/openapitools/model/Dog.java

@@ -27,6 +27,22 @@ public class Dog extends Animal {
   @JsonProperty("breed")
   private String breed;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Dog#Dog(String)}
+   */
+  @Deprecated
+  public Dog() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Dog(String className) {
+    super(className);
+  }
+
   public Dog breed(String breed) {
     this.breed = breed;
     return this;

samples/client/petstore/spring-http-interface-reactive/src/main/java/org/openapitools/model/EnumTest.java

@@ -182,6 +182,22 @@ public class EnumTest {
   @JsonProperty("outerEnum")
   private OuterEnum outerEnum;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link EnumTest#EnumTest(EnumStringRequiredEnum)}
+   */
+  @Deprecated
+  public EnumTest() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public EnumTest(EnumStringRequiredEnum enumStringRequired) {
+    this.enumStringRequired = enumStringRequired;
+  }
+
   public EnumTest enumString(EnumStringEnum enumString) {
     this.enumString = enumString;
     return this;

samples/client/petstore/spring-http-interface-reactive/src/main/java/org/openapitools/model/FormatTest.java

@@ -71,6 +71,25 @@ public class FormatTest {
   @JsonProperty("BigDecimal")
   private BigDecimal bigDecimal;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link FormatTest#FormatTest(BigDecimal, byte[], LocalDate, String)}
+   */
+  @Deprecated
+  public FormatTest() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public FormatTest(BigDecimal number, byte[] _byte, LocalDate date, String password) {
+    this.number = number;
+    this._byte = _byte;
+    this.date = date;
+    this.password = password;
+  }
+
   public FormatTest integer(Integer integer) {
     this.integer = integer;
     return this;

samples/client/petstore/spring-http-interface-reactive/src/main/java/org/openapitools/model/Name.java

@@ -31,6 +31,22 @@ public class Name {
   @JsonProperty("123Number")
   private Integer _123number;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Name#Name(Integer)}
+   */
+  @Deprecated
+  public Name() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Name(Integer name) {
+    this.name = name;
+  }
+
   public Name name(Integer name) {
     this.name = name;
     return this;

samples/client/petstore/spring-http-interface-reactive/src/main/java/org/openapitools/model/Pet.java

@@ -84,6 +84,23 @@ public class Pet {
   @JsonProperty("status")
   private StatusEnum status;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Pet#Pet(String, Set<String>)}
+   */
+  @Deprecated
+  public Pet() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Pet(String name, Set<String> photoUrls) {
+    this.name = name;
+    this.photoUrls = photoUrls;
+  }
+
   public Pet id(Long id) {
     this.id = id;
     return this;

samples/client/petstore/spring-http-interface-reactive/src/main/java/org/openapitools/model/TypeHolderDefault.java

@@ -38,6 +38,26 @@ public class TypeHolderDefault {
   
   private List<Integer> arrayItem = new ArrayList<>();
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link TypeHolderDefault#TypeHolderDefault(String, BigDecimal, Integer, Boolean, List<Integer>)}
+   */
+  @Deprecated
+  public TypeHolderDefault() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public TypeHolderDefault(String stringItem, BigDecimal numberItem, Integer integerItem, Boolean boolItem, List<Integer> arrayItem) {
+    this.stringItem = stringItem;
+    this.numberItem = numberItem;
+    this.integerItem = integerItem;
+    this.boolItem = boolItem;
+    this.arrayItem = arrayItem;
+  }
+
   public TypeHolderDefault stringItem(String stringItem) {
     this.stringItem = stringItem;
     return this;

samples/client/petstore/spring-http-interface-reactive/src/main/java/org/openapitools/model/TypeHolderExample.java

@@ -41,6 +41,27 @@ public class TypeHolderExample {
   
   private List<Integer> arrayItem = new ArrayList<>();
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link TypeHolderExample#TypeHolderExample(String, BigDecimal, Float, Integer, Boolean, List<Integer>)}
+   */
+  @Deprecated
+  public TypeHolderExample() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public TypeHolderExample(String stringItem, BigDecimal numberItem, Float floatItem, Integer integerItem, Boolean boolItem, List<Integer> arrayItem) {
+    this.stringItem = stringItem;
+    this.numberItem = numberItem;
+    this.floatItem = floatItem;
+    this.integerItem = integerItem;
+    this.boolItem = boolItem;
+    this.arrayItem = arrayItem;
+  }
+
   public TypeHolderExample stringItem(String stringItem) {
     this.stringItem = stringItem;
     return this;

samples/client/petstore/spring-http-interface/src/main/java/org/openapitools/model/AnimalDto.java

@@ -43,6 +43,22 @@ public class AnimalDto {
   @JsonProperty("color")
   private String color = "red";
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link AnimalDto#AnimalDto(String)}
+   */
+  @Deprecated
+  public AnimalDto() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public AnimalDto(String className) {
+    this.className = className;
+  }
+
   public AnimalDto className(String className) {
     this.className = className;
     return this;

samples/client/petstore/spring-http-interface/src/main/java/org/openapitools/model/BigCatDto.java

@@ -69,6 +69,22 @@ public class BigCatDto extends CatDto {
   @JsonProperty("kind")
   private KindEnum kind;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link BigCatDto#BigCatDto(String)}
+   */
+  @Deprecated
+  public BigCatDto() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public BigCatDto(String className) {
+    super(className);
+  }
+
   public BigCatDto kind(KindEnum kind) {
     this.kind = kind;
     return this;

samples/client/petstore/spring-http-interface/src/main/java/org/openapitools/model/CatDto.java

@@ -37,6 +37,22 @@ public class CatDto extends AnimalDto {
   @JsonProperty("declawed")
   private Boolean declawed;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link CatDto#CatDto(String)}
+   */
+  @Deprecated
+  public CatDto() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public CatDto(String className) {
+    super(className);
+  }
+
   public CatDto declawed(Boolean declawed) {
     this.declawed = declawed;
     return this;

samples/client/petstore/spring-http-interface/src/main/java/org/openapitools/model/CategoryDto.java

@@ -27,6 +27,22 @@ public class CategoryDto {
   @JsonProperty("name")
   private String name = "default-name";
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link CategoryDto#CategoryDto(String)}
+   */
+  @Deprecated
+  public CategoryDto() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public CategoryDto(String name) {
+    this.name = name;
+  }
+
   public CategoryDto id(Long id) {
     this.id = id;
     return this;

samples/client/petstore/spring-http-interface/src/main/java/org/openapitools/model/DogDto.java

@@ -29,6 +29,22 @@ public class DogDto extends AnimalDto {
   @JsonProperty("breed")
   private String breed;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link DogDto#DogDto(String)}
+   */
+  @Deprecated
+  public DogDto() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public DogDto(String className) {
+    super(className);
+  }
+
   public DogDto breed(String breed) {
     this.breed = breed;
     return this;

samples/client/petstore/spring-http-interface/src/main/java/org/openapitools/model/EnumTestDto.java

@@ -182,6 +182,22 @@ public class EnumTestDto {
   @JsonProperty("outerEnum")
   private OuterEnumDto outerEnum;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link EnumTestDto#EnumTestDto(EnumStringRequiredEnum)}
+   */
+  @Deprecated
+  public EnumTestDto() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public EnumTestDto(EnumStringRequiredEnum enumStringRequired) {
+    this.enumStringRequired = enumStringRequired;
+  }
+
   public EnumTestDto enumString(EnumStringEnum enumString) {
     this.enumString = enumString;
     return this;

samples/client/petstore/spring-http-interface/src/main/java/org/openapitools/model/FormatTestDto.java

@@ -71,6 +71,25 @@ public class FormatTestDto {
   @JsonProperty("BigDecimal")
   private BigDecimal bigDecimal;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link FormatTestDto#FormatTestDto(BigDecimal, byte[], LocalDate, String)}
+   */
+  @Deprecated
+  public FormatTestDto() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public FormatTestDto(BigDecimal number, byte[] _byte, LocalDate date, String password) {
+    this.number = number;
+    this._byte = _byte;
+    this.date = date;
+    this.password = password;
+  }
+
   public FormatTestDto integer(Integer integer) {
     this.integer = integer;
     return this;

samples/client/petstore/spring-http-interface/src/main/java/org/openapitools/model/NameDto.java

@@ -33,6 +33,22 @@ public class NameDto {
   @JsonProperty("123Number")
   private Integer _123number;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link NameDto#NameDto(Integer)}
+   */
+  @Deprecated
+  public NameDto() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public NameDto(Integer name) {
+    this.name = name;
+  }
+
   public NameDto name(Integer name) {
     this.name = name;
     return this;

samples/client/petstore/spring-http-interface/src/main/java/org/openapitools/model/PetDto.java

@@ -86,6 +86,23 @@ public class PetDto {
   @JsonProperty("status")
   private StatusEnum status;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link PetDto#PetDto(String, Set<String>)}
+   */
+  @Deprecated
+  public PetDto() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public PetDto(String name, Set<String> photoUrls) {
+    this.name = name;
+    this.photoUrls = photoUrls;
+  }
+
   public PetDto id(Long id) {
     this.id = id;
     return this;

samples/client/petstore/spring-http-interface/src/main/java/org/openapitools/model/TypeHolderDefaultDto.java

@@ -40,6 +40,26 @@ public class TypeHolderDefaultDto {
   
   private List<Integer> arrayItem = new ArrayList<>();
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link TypeHolderDefaultDto#TypeHolderDefaultDto(String, BigDecimal, Integer, Boolean, List<Integer>)}
+   */
+  @Deprecated
+  public TypeHolderDefaultDto() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public TypeHolderDefaultDto(String stringItem, BigDecimal numberItem, Integer integerItem, Boolean boolItem, List<Integer> arrayItem) {
+    this.stringItem = stringItem;
+    this.numberItem = numberItem;
+    this.integerItem = integerItem;
+    this.boolItem = boolItem;
+    this.arrayItem = arrayItem;
+  }
+
   public TypeHolderDefaultDto stringItem(String stringItem) {
     this.stringItem = stringItem;
     return this;

samples/client/petstore/spring-http-interface/src/main/java/org/openapitools/model/TypeHolderExampleDto.java

@@ -43,6 +43,27 @@ public class TypeHolderExampleDto {
   
   private List<Integer> arrayItem = new ArrayList<>();
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link TypeHolderExampleDto#TypeHolderExampleDto(String, BigDecimal, Float, Integer, Boolean, List<Integer>)}
+   */
+  @Deprecated
+  public TypeHolderExampleDto() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public TypeHolderExampleDto(String stringItem, BigDecimal numberItem, Float floatItem, Integer integerItem, Boolean boolItem, List<Integer> arrayItem) {
+    this.stringItem = stringItem;
+    this.numberItem = numberItem;
+    this.floatItem = floatItem;
+    this.integerItem = integerItem;
+    this.boolItem = boolItem;
+    this.arrayItem = arrayItem;
+  }
+
   public TypeHolderExampleDto stringItem(String stringItem) {
     this.stringItem = stringItem;
     return this;

samples/openapi3/client/petstore/spring-cloud-3/src/main/java/org/openapitools/model/Pet.java

@@ -84,6 +84,23 @@ public class Pet {
   @JsonProperty("status")
   private StatusEnum status;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Pet#Pet(String, List<String>)}
+   */
+  @Deprecated
+  public Pet() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Pet(String name, List<String> photoUrls) {
+    this.name = name;
+    this.photoUrls = photoUrls;
+  }
+
   public Pet id(Long id) {
     this.id = id;
     return this;

samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Pet.java

@@ -84,6 +84,23 @@ public class Pet {
   @JsonProperty("status")
   private StatusEnum status;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Pet#Pet(String, List<String>)}
+   */
+  @Deprecated
+  public Pet() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Pet(String name, List<String> photoUrls) {
+    this.name = name;
+    this.photoUrls = photoUrls;
+  }
+
   public Pet id(Long id) {
     this.id = id;
     return this;

samples/openapi3/client/petstore/spring-cloud-date-time/src/main/java/org/openapitools/model/Pet.java

@@ -45,6 +45,22 @@ public class Pet {
   @DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
   private LocalDate dateOfBirth = LocalDate.parse("2021-01-01");
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Pet#Pet(String)}
+   */
+  @Deprecated
+  public Pet() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Pet(String atType) {
+    this.atType = atType;
+  }
+
   public Pet atType(String atType) {
     this.atType = atType;
     return this;

samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Animal.java

@@ -44,6 +44,22 @@ public class Animal {
   @JsonProperty("color")
   private String color = "red";
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Animal#Animal(String)}
+   */
+  @Deprecated
+  public Animal() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Animal(String className) {
+    this.className = className;
+  }
+
   public Animal className(String className) {
     this.className = className;
     return this;

samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/BigCat.java

@@ -69,6 +69,22 @@ public class BigCat extends Cat {
   @JsonProperty("kind")
   private KindEnum kind;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link BigCat#BigCat(String)}
+   */
+  @Deprecated
+  public BigCat() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public BigCat(String className) {
+    super(className);
+  }
+
   public BigCat kind(KindEnum kind) {
     this.kind = kind;
     return this;

samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Cat.java

@@ -38,6 +38,22 @@ public class Cat extends Animal {
   @JsonProperty("declawed")
   private Boolean declawed;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Cat#Cat(String)}
+   */
+  @Deprecated
+  public Cat() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Cat(String className) {
+    super(className);
+  }
+
   public Cat declawed(Boolean declawed) {
     this.declawed = declawed;
     return this;

samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Category.java

@@ -27,6 +27,22 @@ public class Category {
   @JsonProperty("name")
   private String name = "default-name";
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Category#Category(String)}
+   */
+  @Deprecated
+  public Category() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Category(String name) {
+    this.name = name;
+  }
+
   public Category id(Long id) {
     this.id = id;
     return this;

samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Dog.java

@@ -29,6 +29,22 @@ public class Dog extends Animal {
   @JsonProperty("breed")
   private String breed;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Dog#Dog(String)}
+   */
+  @Deprecated
+  public Dog() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Dog(String className) {
+    super(className);
+  }
+
   public Dog breed(String breed) {
     this.breed = breed;
     return this;

samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/EnumTest.java

@@ -184,6 +184,22 @@ public class EnumTest {
   @JsonProperty("outerEnum")
   private OuterEnum outerEnum;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link EnumTest#EnumTest(EnumStringRequiredEnum)}
+   */
+  @Deprecated
+  public EnumTest() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public EnumTest(EnumStringRequiredEnum enumStringRequired) {
+    this.enumStringRequired = enumStringRequired;
+  }
+
   public EnumTest enumString(EnumStringEnum enumString) {
     this.enumString = enumString;
     return this;

samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/FormatTest.java

@@ -73,6 +73,25 @@ public class FormatTest {
   @JsonProperty("BigDecimal")
   private BigDecimal bigDecimal;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link FormatTest#FormatTest(BigDecimal, byte[], LocalDate, String)}
+   */
+  @Deprecated
+  public FormatTest() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public FormatTest(BigDecimal number, byte[] _byte, LocalDate date, String password) {
+    this.number = number;
+    this._byte = _byte;
+    this.date = date;
+    this.password = password;
+  }
+
   public FormatTest integer(Integer integer) {
     this.integer = integer;
     return this;

samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Name.java

@@ -34,6 +34,22 @@ public class Name {
   @JsonProperty("123Number")
   private Integer _123number;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Name#Name(Integer)}
+   */
+  @Deprecated
+  public Name() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Name(Integer name) {
+    this.name = name;
+  }
+
   public Name name(Integer name) {
     this.name = name;
     return this;

samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Pet.java

@@ -86,6 +86,23 @@ public class Pet {
   @JsonProperty("status")
   private StatusEnum status;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Pet#Pet(String, Set<String>)}
+   */
+  @Deprecated
+  public Pet() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Pet(String name, Set<String> photoUrls) {
+    this.name = name;
+    this.photoUrls = photoUrls;
+  }
+
   public Pet id(Long id) {
     this.id = id;
     return this;

samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/TypeHolderDefault.java

@@ -40,6 +40,26 @@ public class TypeHolderDefault {
   @Valid
   private List<Integer> arrayItem = new ArrayList<>();
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link TypeHolderDefault#TypeHolderDefault(String, BigDecimal, Integer, Boolean, List<Integer>)}
+   */
+  @Deprecated
+  public TypeHolderDefault() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public TypeHolderDefault(String stringItem, BigDecimal numberItem, Integer integerItem, Boolean boolItem, List<Integer> arrayItem) {
+    this.stringItem = stringItem;
+    this.numberItem = numberItem;
+    this.integerItem = integerItem;
+    this.boolItem = boolItem;
+    this.arrayItem = arrayItem;
+  }
+
   public TypeHolderDefault stringItem(String stringItem) {
     this.stringItem = stringItem;
     return this;

samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/TypeHolderExample.java

@@ -43,6 +43,27 @@ public class TypeHolderExample {
   @Valid
   private List<Integer> arrayItem = new ArrayList<>();
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link TypeHolderExample#TypeHolderExample(String, BigDecimal, Float, Integer, Boolean, List<Integer>)}
+   */
+  @Deprecated
+  public TypeHolderExample() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public TypeHolderExample(String stringItem, BigDecimal numberItem, Float floatItem, Integer integerItem, Boolean boolItem, List<Integer> arrayItem) {
+    this.stringItem = stringItem;
+    this.numberItem = numberItem;
+    this.floatItem = floatItem;
+    this.integerItem = integerItem;
+    this.boolItem = boolItem;
+    this.arrayItem = arrayItem;
+  }
+
   public TypeHolderExample stringItem(String stringItem) {
     this.stringItem = stringItem;
     return this;

samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Pet.java

@@ -84,6 +84,23 @@ public class Pet {
   @JsonProperty("status")
   private StatusEnum status;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Pet#Pet(String, List<String>)}
+   */
+  @Deprecated
+  public Pet() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Pet(String name, List<String> photoUrls) {
+    this.name = name;
+    this.photoUrls = photoUrls;
+  }
+
   public Pet id(Long id) {
     this.id = id;
     return this;

samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Pet.java

@@ -84,6 +84,23 @@ public class Pet {
   @JsonProperty("status")
   private StatusEnum status;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Pet#Pet(String, List<String>)}
+   */
+  @Deprecated
+  public Pet() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Pet(String name, List<String> photoUrls) {
+    this.name = name;
+    this.photoUrls = photoUrls;
+  }
+
   public Pet id(Long id) {
     this.id = id;
     return this;

samples/openapi3/client/petstore/spring-stubs-skip-default-interface/src/main/java/org/openapitools/model/Pet.java

@@ -84,6 +84,23 @@ public class Pet {
   @JsonProperty("status")
   private StatusEnum status;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Pet#Pet(String, List<String>)}
+   */
+  @Deprecated
+  public Pet() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Pet(String name, List<String> photoUrls) {
+    this.name = name;
+    this.photoUrls = photoUrls;
+  }
+
   public Pet id(Long id) {
     this.id = id;
     return this;

samples/openapi3/client/petstore/spring-stubs/src/main/java/org/openapitools/model/Pet.java

@@ -84,6 +84,23 @@ public class Pet {
   @JsonProperty("status")
   private StatusEnum status;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Pet#Pet(String, List<String>)}
+   */
+  @Deprecated
+  public Pet() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Pet(String name, List<String> photoUrls) {
+    this.name = name;
+    this.photoUrls = photoUrls;
+  }
+
   public Pet id(Long id) {
     this.id = id;
     return this;

samples/openapi3/server/petstore/spring-boot-oneof/src/main/java/org/openapitools/model/Bar.java

@@ -39,6 +39,23 @@ public class Bar extends Entity implements BarRefOrValue {
   @JsonProperty("foo")
   private FooRefOrValue foo;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Bar#Bar(String, String)}
+   */
+  @Deprecated
+  public Bar() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Bar(String id, String atType) {
+    super(atType);
+    this.id = id;
+  }
+
   public Bar id(String id) {
     this.id = id;
     return this;

samples/openapi3/server/petstore/spring-boot-oneof/src/main/java/org/openapitools/model/BarCreate.java

@@ -38,6 +38,22 @@ public class BarCreate extends Entity {
   @JsonProperty("foo")
   private FooRefOrValue foo;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link BarCreate#BarCreate(String)}
+   */
+  @Deprecated
+  public BarCreate() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public BarCreate(String atType) {
+    super(atType);
+  }
+
   public BarCreate barPropA(String barPropA) {
     this.barPropA = barPropA;
     return this;

samples/openapi3/server/petstore/spring-boot-oneof/src/main/java/org/openapitools/model/BarRef.java

@@ -26,6 +26,22 @@ import javax.annotation.Generated;
 @Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BarRef extends EntityRef implements BarRefOrValue {
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link BarRef#BarRef(String)}
+   */
+  @Deprecated
+  public BarRef() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public BarRef(String atType) {
+    super(atType);
+  }
+
   public BarRef name(String name) {
     super.setName(name);
     return this;

samples/openapi3/server/petstore/spring-boot-oneof/src/main/java/org/openapitools/model/Entity.java

@@ -59,6 +59,22 @@ public class Entity {
   @JsonProperty("@type")
   private String atType;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Entity#Entity(String)}
+   */
+  @Deprecated
+  public Entity() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Entity(String atType) {
+    this.atType = atType;
+  }
+
   public Entity href(String href) {
     this.href = href;
     return this;

samples/openapi3/server/petstore/spring-boot-oneof/src/main/java/org/openapitools/model/EntityRef.java

@@ -58,6 +58,22 @@ public class EntityRef {
   @JsonProperty("@type")
   private String atType;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link EntityRef#EntityRef(String)}
+   */
+  @Deprecated
+  public EntityRef() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public EntityRef(String atType) {
+    this.atType = atType;
+  }
+
   public EntityRef name(String name) {
     this.name = name;
     return this;

samples/openapi3/server/petstore/spring-boot-oneof/src/main/java/org/openapitools/model/Extensible.java

@@ -30,6 +30,22 @@ public class Extensible {
   @JsonProperty("@type")
   private String atType;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Extensible#Extensible(String)}
+   */
+  @Deprecated
+  public Extensible() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Extensible(String atType) {
+    this.atType = atType;
+  }
+
   public Extensible atSchemaLocation(String atSchemaLocation) {
     this.atSchemaLocation = atSchemaLocation;
     return this;

samples/openapi3/server/petstore/spring-boot-oneof/src/main/java/org/openapitools/model/Foo.java

@@ -32,6 +32,22 @@ public class Foo extends Entity implements FooRefOrValue {
   @JsonProperty("fooPropB")
   private String fooPropB;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Foo#Foo(String)}
+   */
+  @Deprecated
+  public Foo() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Foo(String atType) {
+    super(atType);
+  }
+
   public Foo fooPropA(String fooPropA) {
     this.fooPropA = fooPropA;
     return this;

samples/openapi3/server/petstore/spring-boot-oneof/src/main/java/org/openapitools/model/FooRef.java

@@ -29,6 +29,22 @@ public class FooRef extends EntityRef implements FooRefOrValue {
   @JsonProperty("foorefPropA")
   private String foorefPropA;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link FooRef#FooRef(String)}
+   */
+  @Deprecated
+  public FooRef() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public FooRef(String atType) {
+    super(atType);
+  }
+
   public FooRef foorefPropA(String foorefPropA) {
     this.foorefPropA = foorefPropA;
     return this;

samples/openapi3/server/petstore/spring-boot-oneof/src/main/java/org/openapitools/model/Pasta.java

@@ -29,6 +29,22 @@ public class Pasta extends Entity {
   @JsonProperty("vendor")
   private String vendor;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Pasta#Pasta(String)}
+   */
+  @Deprecated
+  public Pasta() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Pasta(String atType) {
+    super(atType);
+  }
+
   public Pasta vendor(String vendor) {
     this.vendor = vendor;
     return this;

samples/openapi3/server/petstore/spring-boot-oneof/src/main/java/org/openapitools/model/Pizza.java

@@ -39,6 +39,22 @@ public class Pizza extends Entity {
   @JsonProperty("pizzaSize")
   private BigDecimal pizzaSize;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Pizza#Pizza(String)}
+   */
+  @Deprecated
+  public Pizza() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Pizza(String atType) {
+    super(atType);
+  }
+
   public Pizza pizzaSize(BigDecimal pizzaSize) {
     this.pizzaSize = pizzaSize;
     return this;

samples/openapi3/server/petstore/spring-boot-oneof/src/main/java/org/openapitools/model/PizzaSpeziale.java

@@ -30,6 +30,22 @@ public class PizzaSpeziale extends Pizza {
   @JsonProperty("toppings")
   private String toppings;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link PizzaSpeziale#PizzaSpeziale(String)}
+   */
+  @Deprecated
+  public PizzaSpeziale() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public PizzaSpeziale(String atType) {
+    super(atType);
+  }
+
   public PizzaSpeziale toppings(String toppings) {
     this.toppings = toppings;
     return this;

samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/model/Pet.java

@@ -84,6 +84,23 @@ public class Pet {
   @JsonProperty("status")
   private StatusEnum status;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Pet#Pet(String, List<String>)}
+   */
+  @Deprecated
+  public Pet() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Pet(String name, List<String> photoUrls) {
+    this.name = name;
+    this.photoUrls = photoUrls;
+  }
+
   public Pet id(Long id) {
     this.id = id;
     return this;

samples/openapi3/server/petstore/springboot-3/src/main/java/org/openapitools/model/Pet.java

@@ -84,6 +84,23 @@ public class Pet {
   @JsonProperty("status")
   private StatusEnum status;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Pet#Pet(String, List<String>)}
+   */
+  @Deprecated
+  public Pet() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Pet(String name, List<String> photoUrls) {
+    this.name = name;
+    this.photoUrls = photoUrls;
+  }
+
   public Pet id(Long id) {
     this.id = id;
     return this;

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

@@ -43,6 +43,22 @@ public class Animal {
   @JsonProperty("color")
   private String color = "red";
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Animal#Animal(String)}
+   */
+  @Deprecated
+  public Animal() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Animal(String className) {
+    this.className = className;
+  }
+
   public Animal className(String className) {
     this.className = className;
     return this;

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

@@ -68,6 +68,22 @@ public class BigCat extends Cat {
   @JsonProperty("kind")
   private KindEnum kind;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link BigCat#BigCat(String)}
+   */
+  @Deprecated
+  public BigCat() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public BigCat(String className) {
+    super(className);
+  }
+
   public BigCat kind(KindEnum kind) {
     this.kind = kind;
     return this;

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

@@ -37,6 +37,22 @@ public class Cat extends Animal {
   @JsonProperty("declawed")
   private Boolean declawed;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Cat#Cat(String)}
+   */
+  @Deprecated
+  public Cat() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Cat(String className) {
+    super(className);
+  }
+
   public Cat declawed(Boolean declawed) {
     this.declawed = declawed;
     return this;

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

@@ -26,6 +26,22 @@ public class Category {
   @JsonProperty("name")
   private String name = "default-name";
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Category#Category(String)}
+   */
+  @Deprecated
+  public Category() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Category(String name) {
+    this.name = name;
+  }
+
   public Category id(Long id) {
     this.id = id;
     return this;

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

@@ -28,6 +28,22 @@ public class Dog extends Animal {
   @JsonProperty("breed")
   private String breed;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Dog#Dog(String)}
+   */
+  @Deprecated
+  public Dog() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Dog(String className) {
+    super(className);
+  }
+
   public Dog breed(String breed) {
     this.breed = breed;
     return this;

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

@@ -183,6 +183,22 @@ public class EnumTest {
   @JsonProperty("outerEnum")
   private OuterEnum outerEnum;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link EnumTest#EnumTest(EnumStringRequiredEnum)}
+   */
+  @Deprecated
+  public EnumTest() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public EnumTest(EnumStringRequiredEnum enumStringRequired) {
+    this.enumStringRequired = enumStringRequired;
+  }
+
   public EnumTest enumString(EnumStringEnum enumString) {
     this.enumString = enumString;
     return this;

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

@@ -72,6 +72,25 @@ public class FormatTest {
   @JsonProperty("BigDecimal")
   private BigDecimal bigDecimal;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link FormatTest#FormatTest(BigDecimal, byte[], LocalDate, String)}
+   */
+  @Deprecated
+  public FormatTest() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public FormatTest(BigDecimal number, byte[] _byte, LocalDate date, String password) {
+    this.number = number;
+    this._byte = _byte;
+    this.date = date;
+    this.password = password;
+  }
+
   public FormatTest integer(Integer integer) {
     this.integer = integer;
     return this;

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

@@ -33,6 +33,22 @@ public class Name {
   @JsonProperty("123Number")
   private Integer _123number;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Name#Name(Integer)}
+   */
+  @Deprecated
+  public Name() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Name(Integer name) {
+    this.name = name;
+  }
+
   public Name name(Integer name) {
     this.name = name;
     return this;

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

@@ -85,6 +85,23 @@ public class Pet {
   @JsonProperty("status")
   private StatusEnum status;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Pet#Pet(String, Set<String>)}
+   */
+  @Deprecated
+  public Pet() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Pet(String name, Set<String> photoUrls) {
+    this.name = name;
+    this.photoUrls = photoUrls;
+  }
+
   public Pet id(Long id) {
     this.id = id;
     return this;

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

@@ -39,6 +39,26 @@ public class TypeHolderDefault {
   @Valid
   private List<Integer> arrayItem = new ArrayList<>();
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link TypeHolderDefault#TypeHolderDefault(String, BigDecimal, Integer, Boolean, List<Integer>)}
+   */
+  @Deprecated
+  public TypeHolderDefault() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public TypeHolderDefault(String stringItem, BigDecimal numberItem, Integer integerItem, Boolean boolItem, List<Integer> arrayItem) {
+    this.stringItem = stringItem;
+    this.numberItem = numberItem;
+    this.integerItem = integerItem;
+    this.boolItem = boolItem;
+    this.arrayItem = arrayItem;
+  }
+
   public TypeHolderDefault stringItem(String stringItem) {
     this.stringItem = stringItem;
     return this;

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

@@ -42,6 +42,27 @@ public class TypeHolderExample {
   @Valid
   private List<Integer> arrayItem = new ArrayList<>();
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link TypeHolderExample#TypeHolderExample(String, BigDecimal, Float, Integer, Boolean, List<Integer>)}
+   */
+  @Deprecated
+  public TypeHolderExample() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public TypeHolderExample(String stringItem, BigDecimal numberItem, Float floatItem, Integer integerItem, Boolean boolItem, List<Integer> arrayItem) {
+    this.stringItem = stringItem;
+    this.numberItem = numberItem;
+    this.floatItem = floatItem;
+    this.integerItem = integerItem;
+    this.boolItem = boolItem;
+    this.arrayItem = arrayItem;
+  }
+
   public TypeHolderExample stringItem(String stringItem) {
     this.stringItem = stringItem;
     return this;

samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Animal.java

@@ -44,6 +44,22 @@ public class Animal {
   @JsonProperty("color")
   private String color = "red";
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Animal#Animal(String)}
+   */
+  @Deprecated
+  public Animal() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Animal(String className) {
+    this.className = className;
+  }
+
   public Animal className(String className) {
     this.className = className;
     return this;

samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/BigCat.java

@@ -69,6 +69,22 @@ public class BigCat extends Cat {
   @JsonProperty("kind")
   private KindEnum kind;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link BigCat#BigCat(String)}
+   */
+  @Deprecated
+  public BigCat() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public BigCat(String className) {
+    super(className);
+  }
+
   public BigCat kind(KindEnum kind) {
     this.kind = kind;
     return this;

samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Cat.java

@@ -38,6 +38,22 @@ public class Cat extends Animal {
   @JsonProperty("declawed")
   private Boolean declawed;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Cat#Cat(String)}
+   */
+  @Deprecated
+  public Cat() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Cat(String className) {
+    super(className);
+  }
+
   public Cat declawed(Boolean declawed) {
     this.declawed = declawed;
     return this;

samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Category.java

@@ -27,6 +27,22 @@ public class Category {
   @JsonProperty("name")
   private String name = "default-name";
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Category#Category(String)}
+   */
+  @Deprecated
+  public Category() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Category(String name) {
+    this.name = name;
+  }
+
   public Category id(Long id) {
     this.id = id;
     return this;

samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Dog.java

@@ -29,6 +29,22 @@ public class Dog extends Animal {
   @JsonProperty("breed")
   private String breed;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Dog#Dog(String)}
+   */
+  @Deprecated
+  public Dog() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Dog(String className) {
+    super(className);
+  }
+
   public Dog breed(String breed) {
     this.breed = breed;
     return this;

samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/EnumTest.java

@@ -184,6 +184,22 @@ public class EnumTest {
   @JsonProperty("outerEnum")
   private OuterEnum outerEnum;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link EnumTest#EnumTest(EnumStringRequiredEnum)}
+   */
+  @Deprecated
+  public EnumTest() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public EnumTest(EnumStringRequiredEnum enumStringRequired) {
+    this.enumStringRequired = enumStringRequired;
+  }
+
   public EnumTest enumString(EnumStringEnum enumString) {
     this.enumString = enumString;
     return this;

samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/FormatTest.java

@@ -73,6 +73,25 @@ public class FormatTest {
   @JsonProperty("BigDecimal")
   private BigDecimal bigDecimal;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link FormatTest#FormatTest(BigDecimal, byte[], LocalDate, String)}
+   */
+  @Deprecated
+  public FormatTest() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public FormatTest(BigDecimal number, byte[] _byte, LocalDate date, String password) {
+    this.number = number;
+    this._byte = _byte;
+    this.date = date;
+    this.password = password;
+  }
+
   public FormatTest integer(Integer integer) {
     this.integer = integer;
     return this;

samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Name.java

@@ -34,6 +34,22 @@ public class Name {
   @JsonProperty("123Number")
   private Integer _123number;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Name#Name(Integer)}
+   */
+  @Deprecated
+  public Name() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Name(Integer name) {
+    this.name = name;
+  }
+
   public Name name(Integer name) {
     this.name = name;
     return this;

samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Pet.java

@@ -86,6 +86,23 @@ public class Pet {
   @JsonProperty("status")
   private StatusEnum status;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Pet#Pet(String, Set<String>)}
+   */
+  @Deprecated
+  public Pet() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Pet(String name, Set<String> photoUrls) {
+    this.name = name;
+    this.photoUrls = photoUrls;
+  }
+
   public Pet id(Long id) {
     this.id = id;
     return this;

samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/TypeHolderDefault.java

@@ -40,6 +40,26 @@ public class TypeHolderDefault {
   @Valid
   private List<Integer> arrayItem = new ArrayList<>();
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link TypeHolderDefault#TypeHolderDefault(String, BigDecimal, Integer, Boolean, List<Integer>)}
+   */
+  @Deprecated
+  public TypeHolderDefault() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public TypeHolderDefault(String stringItem, BigDecimal numberItem, Integer integerItem, Boolean boolItem, List<Integer> arrayItem) {
+    this.stringItem = stringItem;
+    this.numberItem = numberItem;
+    this.integerItem = integerItem;
+    this.boolItem = boolItem;
+    this.arrayItem = arrayItem;
+  }
+
   public TypeHolderDefault stringItem(String stringItem) {
     this.stringItem = stringItem;
     return this;

samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/TypeHolderExample.java

@@ -43,6 +43,27 @@ public class TypeHolderExample {
   @Valid
   private List<Integer> arrayItem = new ArrayList<>();
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link TypeHolderExample#TypeHolderExample(String, BigDecimal, Float, Integer, Boolean, List<Integer>)}
+   */
+  @Deprecated
+  public TypeHolderExample() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public TypeHolderExample(String stringItem, BigDecimal numberItem, Float floatItem, Integer integerItem, Boolean boolItem, List<Integer> arrayItem) {
+    this.stringItem = stringItem;
+    this.numberItem = numberItem;
+    this.floatItem = floatItem;
+    this.integerItem = integerItem;
+    this.boolItem = boolItem;
+    this.arrayItem = arrayItem;
+  }
+
   public TypeHolderExample stringItem(String stringItem) {
     this.stringItem = stringItem;
     return this;

samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Animal.java

@@ -44,6 +44,22 @@ public class Animal {
   @JsonProperty("color")
   private String color = "red";
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Animal#Animal(String)}
+   */
+  @Deprecated
+  public Animal() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Animal(String className) {
+    this.className = className;
+  }
+
   public Animal className(String className) {
     this.className = className;
     return this;

samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/BigCat.java

@@ -69,6 +69,22 @@ public class BigCat extends Cat {
   @JsonProperty("kind")
   private KindEnum kind;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link BigCat#BigCat(String)}
+   */
+  @Deprecated
+  public BigCat() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public BigCat(String className) {
+    super(className);
+  }
+
   public BigCat kind(KindEnum kind) {
     this.kind = kind;
     return this;

samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Cat.java

@@ -38,6 +38,22 @@ public class Cat extends Animal {
   @JsonProperty("declawed")
   private Boolean declawed;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Cat#Cat(String)}
+   */
+  @Deprecated
+  public Cat() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Cat(String className) {
+    super(className);
+  }
+
   public Cat declawed(Boolean declawed) {
     this.declawed = declawed;
     return this;

samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Category.java

@@ -27,6 +27,22 @@ public class Category {
   @JsonProperty("name")
   private String name = "default-name";
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Category#Category(String)}
+   */
+  @Deprecated
+  public Category() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Category(String name) {
+    this.name = name;
+  }
+
   public Category id(Long id) {
     this.id = id;
     return this;

samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Dog.java

@@ -29,6 +29,22 @@ public class Dog extends Animal {
   @JsonProperty("breed")
   private String breed;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Dog#Dog(String)}
+   */
+  @Deprecated
+  public Dog() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Dog(String className) {
+    super(className);
+  }
+
   public Dog breed(String breed) {
     this.breed = breed;
     return this;

samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/EnumTest.java

@@ -184,6 +184,22 @@ public class EnumTest {
   @JsonProperty("outerEnum")
   private OuterEnum outerEnum;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link EnumTest#EnumTest(EnumStringRequiredEnum)}
+   */
+  @Deprecated
+  public EnumTest() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public EnumTest(EnumStringRequiredEnum enumStringRequired) {
+    this.enumStringRequired = enumStringRequired;
+  }
+
   public EnumTest enumString(EnumStringEnum enumString) {
     this.enumString = enumString;
     return this;

samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/FormatTest.java

@@ -73,6 +73,25 @@ public class FormatTest {
   @JsonProperty("BigDecimal")
   private BigDecimal bigDecimal;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link FormatTest#FormatTest(BigDecimal, byte[], LocalDate, String)}
+   */
+  @Deprecated
+  public FormatTest() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public FormatTest(BigDecimal number, byte[] _byte, LocalDate date, String password) {
+    this.number = number;
+    this._byte = _byte;
+    this.date = date;
+    this.password = password;
+  }
+
   public FormatTest integer(Integer integer) {
     this.integer = integer;
     return this;

samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Name.java

@@ -34,6 +34,22 @@ public class Name {
   @JsonProperty("123Number")
   private Integer _123number;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Name#Name(Integer)}
+   */
+  @Deprecated
+  public Name() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Name(Integer name) {
+    this.name = name;
+  }
+
   public Name name(Integer name) {
     this.name = name;
     return this;

samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Pet.java

@@ -86,6 +86,23 @@ public class Pet {
   @JsonProperty("status")
   private StatusEnum status;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Pet#Pet(String, Set<String>)}
+   */
+  @Deprecated
+  public Pet() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Pet(String name, Set<String> photoUrls) {
+    this.name = name;
+    this.photoUrls = photoUrls;
+  }
+
   public Pet id(Long id) {
     this.id = id;
     return this;

samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/TypeHolderDefault.java

@@ -40,6 +40,26 @@ public class TypeHolderDefault {
   @Valid
   private List<Integer> arrayItem = new ArrayList<>();
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link TypeHolderDefault#TypeHolderDefault(String, BigDecimal, Integer, Boolean, List<Integer>)}
+   */
+  @Deprecated
+  public TypeHolderDefault() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public TypeHolderDefault(String stringItem, BigDecimal numberItem, Integer integerItem, Boolean boolItem, List<Integer> arrayItem) {
+    this.stringItem = stringItem;
+    this.numberItem = numberItem;
+    this.integerItem = integerItem;
+    this.boolItem = boolItem;
+    this.arrayItem = arrayItem;
+  }
+
   public TypeHolderDefault stringItem(String stringItem) {
     this.stringItem = stringItem;
     return this;

samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/TypeHolderExample.java

@@ -43,6 +43,27 @@ public class TypeHolderExample {
   @Valid
   private List<Integer> arrayItem = new ArrayList<>();
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link TypeHolderExample#TypeHolderExample(String, BigDecimal, Float, Integer, Boolean, List<Integer>)}
+   */
+  @Deprecated
+  public TypeHolderExample() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public TypeHolderExample(String stringItem, BigDecimal numberItem, Float floatItem, Integer integerItem, Boolean boolItem, List<Integer> arrayItem) {
+    this.stringItem = stringItem;
+    this.numberItem = numberItem;
+    this.floatItem = floatItem;
+    this.integerItem = integerItem;
+    this.boolItem = boolItem;
+    this.arrayItem = arrayItem;
+  }
+
   public TypeHolderExample stringItem(String stringItem) {
     this.stringItem = stringItem;
     return this;

samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Animal.java

@@ -44,6 +44,22 @@ public class Animal {
   @JsonProperty("color")
   private String color = "red";
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Animal#Animal(String)}
+   */
+  @Deprecated
+  public Animal() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Animal(String className) {
+    this.className = className;
+  }
+
   public Animal className(String className) {
     this.className = className;
     return this;

samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/BigCat.java

@@ -69,6 +69,22 @@ public class BigCat extends Cat {
   @JsonProperty("kind")
   private KindEnum kind;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link BigCat#BigCat(String)}
+   */
+  @Deprecated
+  public BigCat() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public BigCat(String className) {
+    super(className);
+  }
+
   public BigCat kind(KindEnum kind) {
     this.kind = kind;
     return this;

samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Cat.java

@@ -38,6 +38,22 @@ public class Cat extends Animal {
   @JsonProperty("declawed")
   private Boolean declawed;
 
+  /**
+   * Default constructor
+   * @deprecated Use {@link Cat#Cat(String)}
+   */
+  @Deprecated
+  public Cat() {
+    super();
+  }
+
+  /**
+   * Constructor with only required parameters
+   */
+  public Cat(String className) {
+    super(className);
+  }
+
   public Cat declawed(Boolean declawed) {
     this.declawed = declawed;
     return this;