Add property for query json-serialization

Author: Mattias-Sehlstedt

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

@@ -46,6 +46,10 @@ public class CodegenParameter implements IJsonSchemaValidationProperties {
     public boolean isString, isNumeric, isInteger, isLong, isNumber, isFloat, isDouble, isDecimal, isByteArray, isBinary,
             isBoolean, isDate, isDateTime, isUuid, isUri, isEmail, isPassword, isFreeFormObject, isAnyType, isShort, isUnboundedInteger;
     public boolean isArray, isMap;
+    /**
+     * If a query parameter should be serialized as json
+     */
+    public boolean queryIsJsonMimeType;
     /**
      * datatype is the generic inner parameter of a std::optional for C++, or Optional (Java)
      */
@@ -265,6 +269,7 @@ public CodegenParameter copy() {
         output.isAnyType = this.isAnyType;
         output.isArray = this.isArray;
         output.isMap = this.isMap;
+        output.queryIsJsonMimeType = this.queryIsJsonMimeType;
         output.isOptional = this.isOptional;
         output.isExplode = this.isExplode;
         output.style = this.style;
@@ -289,7 +294,7 @@ public int hashCode() {
                 isFormStyle, isSpaceDelimited, isPipeDelimited,
                 jsonSchema, isString, isNumeric, isInteger, isLong, isNumber, isFloat, isDouble, isDecimal,
                 isByteArray, isBinary, isBoolean, isDate, isDateTime, isUuid, isUri, isEmail, isPassword,
-                isFreeFormObject, isAnyType, isArray, isMap, isOptional, isFile, isEnum, isEnumRef, _enum, allowableValues,
+                isFreeFormObject, isAnyType, isArray, isMap, queryIsJsonMimeType, isOptional, isFile, isEnum, isEnumRef, _enum, allowableValues,
                 items, mostInnerItems, additionalProperties, vars, requiredVars, vendorExtensions, hasValidation,
                 getMaxProperties(), getMinProperties(), isNullable, isDeprecated, required, getMaximum(),
                 getExclusiveMaximum(), getMinimum(), getExclusiveMinimum(), getMaxLength(), getMinLength(),
@@ -339,6 +344,7 @@ public boolean equals(Object o) {
                 isAnyType == that.isAnyType &&
                 isArray == that.isArray &&
                 isMap == that.isMap &&
+                queryIsJsonMimeType == that.queryIsJsonMimeType &&
                 isOptional == that.isOptional &&
                 isFile == that.isFile &&
                 isEnum == that.isEnum &&
@@ -479,6 +485,7 @@ public String toString() {
         sb.append(", isAnyType=").append(isAnyType);
         sb.append(", isArray=").append(isArray);
         sb.append(", isMap=").append(isMap);
+        sb.append(", queryIsJsonMimeType=").append(queryIsJsonMimeType);
         sb.append(", isOptional=").append(isOptional);
         sb.append(", isFile=").append(isFile);
         sb.append(", isEnum=").append(isEnum);

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

@@ -5359,6 +5359,7 @@ public CodegenParameter fromParameter(Parameter parameter, Set<String> imports)
         if (parameter instanceof QueryParameter || "query".equalsIgnoreCase(parameter.getIn())) {
             codegenParameter.isQueryParam = true;
             codegenParameter.isAllowEmptyValue = parameter.getAllowEmptyValue() != null && parameter.getAllowEmptyValue();
+            codegenParameter.queryIsJsonMimeType = isJsonMimeType(codegenParameter.contentType);
         } else if (parameter instanceof PathParameter || "path".equalsIgnoreCase(parameter.getIn())) {
             codegenParameter.required = true;
             codegenParameter.isPathParam = true;

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

@@ -5006,4 +5006,15 @@ public void testSingleRequestParameter_hasSingleParamTrue() {
         // When & Then
         assertThat(codegenOperation.getHasSingleParam()).isTrue();
     }
+
+    @Test
+    public void testQueryIsJsonMimeType() {
+        DefaultCodegen codegen = new DefaultCodegen();
+        final OpenAPI openAPI = TestUtils.parseFlattenSpec("src/test/resources/3_0/echo_api.yaml");
+        codegen.setOpenAPI(openAPI);
+        String path = "/query/style_jsonSerialization/object";
+        CodegenOperation codegenOperation = codegen.fromOperation(path, "GET", openAPI.getPaths().get(path).getGet(), null);
+
+        assertTrue(codegenOperation.queryParams.stream().allMatch(p -> p.queryIsJsonMimeType));
+    }
 }