[dart-dio] Fix inheritance with json_serializable using super parameters - Add 'extends' clause to child classes when parent exists - Use Dart 2.17+ super parameters (super.property) in constructors - Separate child properties (this.name) from parent properties (super.name) - Set parentVars in postProcessAllModels for json_serializable - Only declare child properties in class body (not parent properties) - Use allVars for equals/hashCode to include all properties Fixes #22547

Author: AshitaNema

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

@@ -87,9 +87,6 @@ public class DartDioClientCodegen extends AbstractDartCodegen {
 
     public DartDioClientCodegen() {
         super();
-        
-     // This stops the DefaultCodegen from copying parent properties into the child's 'vars'.
-        this.supportsInheritance = true;
 
         modifyFeatureSet(features -> features
                 .includeClientModificationFeatures(

modules/openapi-generator/src/main/resources/dart/libraries/dio/serialization/json_serializable/dart_constructor.mustache

@@ -8,6 +8,6 @@
     {{^required}}{{#useOptional}}this.{{{name}}}{{#defaultValue}} = const Optional.present({{#isEnum}}{{^isContainer}}const {{{enumName}}}._({{/isContainer}}{{/isEnum}}{{{defaultValue}}}{{#isEnum}}{{^isContainer}}){{/isContainer}}{{/isEnum}}){{/defaultValue}}{{^defaultValue}} = const Optional.absent(){{/defaultValue}},{{/useOptional}}{{/required}}{{^required}}{{^useOptional}} this.{{{name}}}{{#defaultValue}} = {{#isEnum}}{{^isContainer}}const {{{enumName}}}._({{/isContainer}}{{/isEnum}}{{{defaultValue}}}{{#isEnum}}{{^isContainer}}){{/isContainer}}{{/isEnum}}{{/defaultValue}},{{/useOptional}}{{/required}}{{#required}}{{^defaultValue}}required {{/defaultValue}}{{/required}}{{#required}} this.{{{name}}}{{#defaultValue}} = {{#isEnum}}{{^isContainer}}const {{{enumName}}}._({{/isContainer}}{{/isEnum}}{{{defaultValue}}}{{#isEnum}}{{^isContainer}}){{/isContainer}}{{/isEnum}}{{/defaultValue}},{{/required}}
   {{/vars}}
 {{#parentVars}}
-    {{#required}}{{^defaultValue}}required {{/defaultValue}}{{/required}} super.{{{name}}}{{#defaultValue}} = {{#isEnum}}{{^isContainer}}const {{{enumName}}}._({{/isContainer}}{{/isEnum}}{{{defaultValue}}}{{#isEnum}}{{^isContainer}}){{/isContainer}}{{/isEnum}}{{/defaultValue}},
+    {{^required}}{{#useOptional}}super.{{{name}}}{{#defaultValue}} = const Optional.present({{#isEnum}}{{^isContainer}}const {{{enumName}}}._({{/isContainer}}{{/isEnum}}{{{defaultValue}}}{{#isEnum}}{{^isContainer}}){{/isContainer}}{{/isEnum}}){{/defaultValue}}{{^defaultValue}} = const Optional.absent(){{/defaultValue}},{{/useOptional}}{{/required}}{{^required}}{{^useOptional}} super.{{{name}}}{{#defaultValue}} = {{#isEnum}}{{^isContainer}}const {{{enumName}}}._({{/isContainer}}{{/isEnum}}{{{defaultValue}}}{{#isEnum}}{{^isContainer}}){{/isContainer}}{{/isEnum}}{{/defaultValue}},{{/useOptional}}{{/required}}{{#required}}{{^defaultValue}}required {{/defaultValue}}{{/required}}{{#required}} super.{{{name}}}{{#defaultValue}} = {{#isEnum}}{{^isContainer}}const {{{enumName}}}._({{/isContainer}}{{/isEnum}}{{{defaultValue}}}{{#isEnum}}{{^isContainer}}){{/isContainer}}{{/isEnum}}{{/defaultValue}},{{/required}}
   {{/parentVars}}
   });

samples/openapi3/client/petstore/dart-dio/petstore_client_lib_fake-json_serializable/lib/src/model/additional_properties_class.dart

@@ -21,7 +21,6 @@ class AdditionalPropertiesClass {
   AdditionalPropertiesClass({
      this.mapProperty,
      this.mapOfMapProperty,
-
      this.mapOfArrayInteger,
   });
 
@@ -65,6 +64,7 @@ class AdditionalPropertiesClass {
 
     @override
     bool operator ==(Object other) => identical(this, other) || other is AdditionalPropertiesClass &&
+    runtimeType == other.runtimeType &&
       other.mapProperty == mapProperty &&
       other.mapOfMapProperty == mapOfMapProperty &&
       other.mapOfArrayInteger == mapOfArrayInteger;

samples/openapi3/client/petstore/dart-dio/petstore_client_lib_fake-json_serializable/lib/src/model/all_of_with_single_ref.dart

@@ -53,6 +53,7 @@ class AllOfWithSingleRef {
 
     @override
     bool operator ==(Object other) => identical(this, other) || other is AllOfWithSingleRef &&
+    runtimeType == other.runtimeType &&
       other.username == username &&
       other.singleRefType == singleRefType;
 

samples/openapi3/client/petstore/dart-dio/petstore_client_lib_fake-json_serializable/lib/src/model/animal.dart

@@ -51,6 +51,7 @@ class Animal {
 
     @override
     bool operator ==(Object other) => identical(this, other) || other is Animal &&
+    runtimeType == other.runtimeType &&
       other.className == className &&
       other.color == color;
 

samples/openapi3/client/petstore/dart-dio/petstore_client_lib_fake-json_serializable/lib/src/model/api_response.dart

@@ -64,6 +64,7 @@ class ApiResponse {
 
     @override
     bool operator ==(Object other) => identical(this, other) || other is ApiResponse &&
+    runtimeType == other.runtimeType &&
       other.code == code &&
       other.type == type &&
       other.message == message;

samples/openapi3/client/petstore/dart-dio/petstore_client_lib_fake-json_serializable/lib/src/model/array_of_array_of_number_only.dart

@@ -38,6 +38,7 @@ class ArrayOfArrayOfNumberOnly {
 
     @override
     bool operator ==(Object other) => identical(this, other) || other is ArrayOfArrayOfNumberOnly &&
+    runtimeType == other.runtimeType &&
       other.arrayArrayNumber == arrayArrayNumber;
 
     @override

samples/openapi3/client/petstore/dart-dio/petstore_client_lib_fake-json_serializable/lib/src/model/array_of_number_only.dart

@@ -38,6 +38,7 @@ class ArrayOfNumberOnly {
 
     @override
     bool operator ==(Object other) => identical(this, other) || other is ArrayOfNumberOnly &&
+    runtimeType == other.runtimeType &&
       other.arrayNumber == arrayNumber;
 
     @override

samples/openapi3/client/petstore/dart-dio/petstore_client_lib_fake-json_serializable/lib/src/model/array_test.dart

@@ -65,6 +65,7 @@ class ArrayTest {
 
     @override
     bool operator ==(Object other) => identical(this, other) || other is ArrayTest &&
+    runtimeType == other.runtimeType &&
       other.arrayOfString == arrayOfString &&
       other.arrayArrayOfInteger == arrayArrayOfInteger &&
       other.arrayArrayOfModel == arrayArrayOfModel;

samples/openapi3/client/petstore/dart-dio/petstore_client_lib_fake-json_serializable/lib/src/model/capitalization.dart

@@ -104,6 +104,7 @@ class Capitalization {
 
     @override
     bool operator ==(Object other) => identical(this, other) || other is Capitalization &&
+    runtimeType == other.runtimeType &&
       other.smallCamel == smallCamel &&
       other.capitalCamel == capitalCamel &&
       other.smallSnake == smallSnake &&