[BUG][JAVA] oneOf/anyOf multiple constructors with same erasure #18548

modules/openapi-generator/src/main/resources/Java/libraries/okhttp-gson/anyof_model.mustache

@@ -54,8 +54,8 @@ public class {{classname}} extends AbstractOpenApiSchema{{#vendorExtensions.x-im
             {{/isArray}}
             {{#isArray}}
 
-            final Type typeInstance = new TypeToken<{{{dataType}}}>(){}.getType();
-            final TypeAdapter<{{{dataType}}}> adapter{{#sanitizeGeneric}}{{{dataType}}}{{/sanitizeGeneric}} = (TypeAdapter<{{{dataType}}}>) gson.getDelegateAdapter(this, TypeToken.get(typeInstance));
+            final Type typeInstance{{#sanitizeGeneric}}{{{dataType}}}{{/sanitizeGeneric}} = new TypeToken<{{{dataType}}}>(){}.getType();
+            final TypeAdapter<{{{dataType}}}> adapter{{#sanitizeGeneric}}{{{dataType}}}{{/sanitizeGeneric}} = (TypeAdapter<{{{dataType}}}>) gson.getDelegateAdapter(this, TypeToken.get(typeInstance{{#sanitizeGeneric}}{{{dataType}}}{{/sanitizeGeneric}}));
             {{/isArray}}
             {{/anyOf}}
             {{/composedSchemas}}
@@ -210,13 +210,11 @@ public class {{classname}} extends AbstractOpenApiSchema{{#vendorExtensions.x-im
         super("anyOf", {{#isNullable}}Boolean.TRUE{{/isNullable}}{{^isNullable}}Boolean.FALSE{{/isNullable}});
     }
 
-    {{#anyOf}}
-    public {{classname}}({{{.}}} o) {
+    public {{classname}}(Object o) {
         super("anyOf", {{#isNullable}}Boolean.TRUE{{/isNullable}}{{^isNullable}}Boolean.FALSE{{/isNullable}});
         setActualInstance(o);
     }
 
-    {{/anyOf}}
     static {
         {{#composedSchemas}}
         {{#anyOf}}

modules/openapi-generator/src/main/resources/Java/libraries/okhttp-gson/oneof_model.mustache

@@ -56,12 +56,12 @@ public class {{classname}} extends AbstractOpenApiSchema{{#vendorExtensions.x-im
             {{/isArray}}
             {{#isArray}}
 
-            final Type typeInstance = new TypeToken<{{{dataType}}}>(){}.getType();
-            final TypeAdapter<{{{dataType}}}> adapter{{#sanitizeGeneric}}{{{dataType}}}{{/sanitizeGeneric}} = (TypeAdapter<{{{dataType}}}>) gson.getDelegateAdapter(this, TypeToken.get(typeInstance));
+            final Type typeInstance{{#sanitizeGeneric}}{{{dataType}}}{{/sanitizeGeneric}} = new TypeToken<{{{dataType}}}>(){}.getType();
+            final TypeAdapter<{{{dataType}}}> adapter{{#sanitizeGeneric}}{{{dataType}}}{{/sanitizeGeneric}} = (TypeAdapter<{{{dataType}}}>) gson.getDelegateAdapter(this, TypeToken.get(typeInstance{{#sanitizeGeneric}}{{{dataType}}}{{/sanitizeGeneric}}));
             {{/isArray}}
             {{#isMap}}
-            final Type typeInstance = new TypeToken<{{{dataType}}}>(){}.getType();
-            final TypeAdapter<{{{dataType}}}> adapter{{#sanitizeGeneric}}{{{dataType}}}{{/sanitizeGeneric}} = (TypeAdapter<{{{dataType}}}>) gson.getDelegateAdapter(this, TypeToken.get(typeInstance));
+            final Type typeInstance{{#sanitizeGeneric}}{{{dataType}}}{{/sanitizeGeneric}} = new TypeToken<{{{dataType}}}>(){}.getType();
+            final TypeAdapter<{{{dataType}}}> adapter{{#sanitizeGeneric}}{{{dataType}}}{{/sanitizeGeneric}} = (TypeAdapter<{{{dataType}}}>) gson.getDelegateAdapter(this, TypeToken.get(typeInstance{{#sanitizeGeneric}}{{{dataType}}}{{/sanitizeGeneric}}));
             {{/isMap}}
             {{/oneOf}}
             {{/composedSchemas}}
@@ -288,13 +288,11 @@ public class {{classname}} extends AbstractOpenApiSchema{{#vendorExtensions.x-im
         super("oneOf", {{#isNullable}}Boolean.TRUE{{/isNullable}}{{^isNullable}}Boolean.FALSE{{/isNullable}});
     }
 
-    {{#oneOf}}
-    public {{classname}}({{{.}}} o) {
+    public {{classname}}(Object o) {
         super("oneOf", {{#isNullable}}Boolean.TRUE{{/isNullable}}{{^isNullable}}Boolean.FALSE{{/isNullable}});
         setActualInstance(o);
     }
 
-    {{/oneOf}}
     static {
         {{#composedSchemas}}
         {{#oneOf}}

modules/openapi-generator/src/test/resources/3_0/java/petstore-with-fake-endpoints-models-for-testing-okhttp-gson.yaml

@@ -938,6 +938,38 @@ paths:
               $ref: '#/components/schemas/FreeFormObject'
         description: request body
         required: true
+  /fake/oneOfWIthSameErasure:
+    get:
+      description: Test route, this shouldn't cause a compiler error
+      responses:
+        200:
+          description: successful response
+          content:
+            application/json:
+              schema:
+                oneOf:
+                  - type: array
+                    items:
+                      type: string
+                  - type: array
+                    items:
+                      type: integer
+  /fake/anyOfWIthSameErasure:
+    get:
+      description: Test route, this shouldn't cause a compiler error
+      responses:
+        200:
+          description: successful response
+          content:
+            application/json:
+              schema:
+                anyOf:
+                  - type: array
+                    items:
+                      type: string
+                  - type: array
+                    items:
+                      type: integer
   /fake/stringMap-reference:
     post:
       tags:

samples/client/others/java/okhttp-gson-oneOf/src/main/java/org/openapitools/client/model/MyExamplePostRequest.java

@@ -124,7 +124,7 @@ public MyExamplePostRequest() {
         super("oneOf", Boolean.FALSE);
     }
 
-    public MyExamplePostRequest(String o) {
+    public MyExamplePostRequest(Object o) {
         super("oneOf", Boolean.FALSE);
         setActualInstance(o);
     }

samples/client/others/java/okhttp-gson-streaming/src/main/java/org/openapitools/client/model/SimpleOneOf.java

@@ -146,12 +146,7 @@ public SimpleOneOf() {
         super("oneOf", Boolean.FALSE);
     }
 
-    public SimpleOneOf(Integer o) {
-        super("oneOf", Boolean.FALSE);
-        setActualInstance(o);
-    }
-
-    public SimpleOneOf(String o) {
+    public SimpleOneOf(Object o) {
         super("oneOf", Boolean.FALSE);
         setActualInstance(o);
     }

samples/client/petstore/java/okhttp-gson-3.1/src/main/java/org/openapitools/client/model/OneOfStringOrInt.java

@@ -145,12 +145,7 @@ public OneOfStringOrInt() {
         super("oneOf", Boolean.FALSE);
     }
 
-    public OneOfStringOrInt(Integer o) {
-        super("oneOf", Boolean.FALSE);
-        setActualInstance(o);
-    }
-
-    public OneOfStringOrInt(String o) {
+    public OneOfStringOrInt(Object o) {
         super("oneOf", Boolean.FALSE);
         setActualInstance(o);
     }

samples/client/petstore/java/okhttp-gson-3.1/src/main/java/org/openapitools/client/model/StringOrInt.java

@@ -140,12 +140,7 @@ public StringOrInt() {
         super("anyOf", Boolean.FALSE);
     }
 
-    public StringOrInt(Integer o) {
-        super("anyOf", Boolean.FALSE);
-        setActualInstance(o);
-    }
-
-    public StringOrInt(String o) {
+    public StringOrInt(Object o) {
         super("anyOf", Boolean.FALSE);
         setActualInstance(o);
     }

samples/client/petstore/java/okhttp-gson/.openapi-generator/FILES

@@ -42,8 +42,10 @@ docs/EnumClass.md
 docs/EnumStringDiscriminator.md
 docs/EnumTest.md
 docs/EquilateralTriangle.md
+docs/FakeAnyOfWIthSameErasureGet200Response.md
 docs/FakeApi.md
 docs/FakeClassnameTags123Api.md
+docs/FakeOneOfWIthSameErasureGet200Response.md
 docs/FileSchemaTestClass.md
 docs/Foo.md
 docs/FooGetDefaultResponse.md
@@ -185,6 +187,8 @@ src/main/java/org/openapitools/client/model/EnumClass.java
 src/main/java/org/openapitools/client/model/EnumStringDiscriminator.java
 src/main/java/org/openapitools/client/model/EnumTest.java
 src/main/java/org/openapitools/client/model/EquilateralTriangle.java
+src/main/java/org/openapitools/client/model/FakeAnyOfWIthSameErasureGet200Response.java
+src/main/java/org/openapitools/client/model/FakeOneOfWIthSameErasureGet200Response.java
 src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
 src/main/java/org/openapitools/client/model/Foo.java
 src/main/java/org/openapitools/client/model/FooGetDefaultResponse.java

samples/client/petstore/java/okhttp-gson/README.md

@@ -118,6 +118,8 @@ Class | Method | HTTP request | Description
 *AnotherFakeApi* | [**getParameterArrayNumber**](docs/AnotherFakeApi.md#getParameterArrayNumber) | **GET** /fake/parameter-array-number | parameter array number default value
 *AnotherFakeApi* | [**getParameterStringNumber**](docs/AnotherFakeApi.md#getParameterStringNumber) | **GET** /fake/parameter-string-number | parameter string number
 *AnotherFakeApi* | [**nullRequestBody**](docs/AnotherFakeApi.md#nullRequestBody) | **GET** /fake/null-request-body | null request body
+*DefaultApi* | [**fakeAnyOfWIthSameErasureGet**](docs/DefaultApi.md#fakeAnyOfWIthSameErasureGet) | **GET** /fake/anyOfWIthSameErasure | 
+*DefaultApi* | [**fakeOneOfWIthSameErasureGet**](docs/DefaultApi.md#fakeOneOfWIthSameErasureGet) | **GET** /fake/oneOfWIthSameErasure | 
 *DefaultApi* | [**fooGet**](docs/DefaultApi.md#fooGet) | **GET** /foo | 
 *FakeApi* | [**fakeGetFreeFormObjectGet**](docs/FakeApi.md#fakeGetFreeFormObjectGet) | **GET** /fake/get-free-form-object | 
 *FakeApi* | [**fakeOuterBooleanSerialize**](docs/FakeApi.md#fakeOuterBooleanSerialize) | **POST** /fake/outer/boolean | 
@@ -202,6 +204,8 @@ Class | Method | HTTP request | Description
  - [EnumStringDiscriminator](docs/EnumStringDiscriminator.md)
  - [EnumTest](docs/EnumTest.md)
  - [EquilateralTriangle](docs/EquilateralTriangle.md)
+ - [FakeAnyOfWIthSameErasureGet200Response](docs/FakeAnyOfWIthSameErasureGet200Response.md)
+ - [FakeOneOfWIthSameErasureGet200Response](docs/FakeOneOfWIthSameErasureGet200Response.md)
  - [FileSchemaTestClass](docs/FileSchemaTestClass.md)
  - [Foo](docs/Foo.md)
  - [FooGetDefaultResponse](docs/FooGetDefaultResponse.md)

samples/client/petstore/java/okhttp-gson/api/openapi.yaml

@@ -992,6 +992,30 @@ paths:
       x-content-type: application/json
       x-accepts:
       - application/json
+  /fake/oneOfWIthSameErasure:
+    get:
+      description: "Test route, this shouldn't cause a compiler error"
+      responses:
+        "200":
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/_fake_oneOfWIthSameErasure_get_200_response'
+          description: successful response
+      x-accepts:
+      - application/json
+  /fake/anyOfWIthSameErasure:
+    get:
+      description: "Test route, this shouldn't cause a compiler error"
+      responses:
+        "200":
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/_fake_anyOfWIthSameErasure_get_200_response'
+          description: successful response
+      x-accepts:
+      - application/json
   /fake/stringMap-reference:
     post:
       description: ""
@@ -2887,6 +2911,22 @@ components:
       - param
       - param2
       type: object
+    _fake_oneOfWIthSameErasure_get_200_response:
+      oneOf:
+      - items:
+          type: string
+        type: array
+      - items:
+          type: integer
+        type: array
+    _fake_anyOfWIthSameErasure_get_200_response:
+      anyOf:
+      - items:
+          type: string
+        type: array
+      - items:
+          type: integer
+        type: array
     testInlineFreeformAdditionalProperties_request:
       additionalProperties: true
       properties:

samples/client/petstore/java/okhttp-gson/docs/DefaultApi.md

@@ -4,9 +4,127 @@ All URIs are relative to *http://petstore.swagger.io:80/v2*
 
 | Method | HTTP request | Description |
 |------------- | ------------- | -------------|
+| [**fakeAnyOfWIthSameErasureGet**](DefaultApi.md#fakeAnyOfWIthSameErasureGet) | **GET** /fake/anyOfWIthSameErasure |  |
+| [**fakeOneOfWIthSameErasureGet**](DefaultApi.md#fakeOneOfWIthSameErasureGet) | **GET** /fake/oneOfWIthSameErasure |  |
 | [**fooGet**](DefaultApi.md#fooGet) | **GET** /foo |  |
 
 
+<a id="fakeAnyOfWIthSameErasureGet"></a>
+# **fakeAnyOfWIthSameErasureGet**
+> FakeAnyOfWIthSameErasureGet200Response fakeAnyOfWIthSameErasureGet()
+
+
+
+Test route, this shouldn&#39;t cause a compiler error
+
+### Example
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.DefaultApi;
+
+public class Example {
+  public static void main(String[] args) {
+    ApiClient defaultClient = Configuration.getDefaultApiClient();
+    defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+    DefaultApi apiInstance = new DefaultApi(defaultClient);
+    try {
+      FakeAnyOfWIthSameErasureGet200Response result = apiInstance.fakeAnyOfWIthSameErasureGet();
+      System.out.println(result);
+    } catch (ApiException e) {
+      System.err.println("Exception when calling DefaultApi#fakeAnyOfWIthSameErasureGet");
+      System.err.println("Status code: " + e.getCode());
+      System.err.println("Reason: " + e.getResponseBody());
+      System.err.println("Response headers: " + e.getResponseHeaders());
+      e.printStackTrace();
+    }
+  }
+}
+```
+
+### Parameters
+This endpoint does not need any parameter.
+
+### Return type
+
+[**FakeAnyOfWIthSameErasureGet200Response**](FakeAnyOfWIthSameErasureGet200Response.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: application/json
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful response |  -  |
+
+<a id="fakeOneOfWIthSameErasureGet"></a>
+# **fakeOneOfWIthSameErasureGet**
+> FakeOneOfWIthSameErasureGet200Response fakeOneOfWIthSameErasureGet()
+
+
+
+Test route, this shouldn&#39;t cause a compiler error
+
+### Example
+```java
+// Import classes:
+import org.openapitools.client.ApiClient;
+import org.openapitools.client.ApiException;
+import org.openapitools.client.Configuration;
+import org.openapitools.client.models.*;
+import org.openapitools.client.api.DefaultApi;
+
+public class Example {
+  public static void main(String[] args) {
+    ApiClient defaultClient = Configuration.getDefaultApiClient();
+    defaultClient.setBasePath("http://petstore.swagger.io:80/v2");
+
+    DefaultApi apiInstance = new DefaultApi(defaultClient);
+    try {
+      FakeOneOfWIthSameErasureGet200Response result = apiInstance.fakeOneOfWIthSameErasureGet();
+      System.out.println(result);
+    } catch (ApiException e) {
+      System.err.println("Exception when calling DefaultApi#fakeOneOfWIthSameErasureGet");
+      System.err.println("Status code: " + e.getCode());
+      System.err.println("Reason: " + e.getResponseBody());
+      System.err.println("Response headers: " + e.getResponseHeaders());
+      e.printStackTrace();
+    }
+  }
+}
+```
+
+### Parameters
+This endpoint does not need any parameter.
+
+### Return type
+
+[**FakeOneOfWIthSameErasureGet200Response**](FakeOneOfWIthSameErasureGet200Response.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: application/json
+
+### HTTP response details
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+| **200** | successful response |  -  |
+
 <a id="fooGet"></a>
 # **fooGet**
 > FooGetDefaultResponse fooGet()

samples/client/petstore/java/okhttp-gson/docs/FakeAnyOfWIthSameErasureGet200Response.md

@@ -0,0 +1,12 @@
+
+
+# FakeAnyOfWIthSameErasureGet200Response
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+
+
+

samples/client/petstore/java/okhttp-gson/docs/FakeOneOfWIthSameErasureGet200Response.md

@@ -0,0 +1,12 @@
+
+
+# FakeOneOfWIthSameErasureGet200Response
+
+
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+
+
+