[kotlin-spring] Support parsing date and date-time parameters

adopted OpenAPITools#3860 for kotlin-spring

Author: Stefan Burnicki

modules/openapi-generator/src/main/resources/kotlin-spring/queryParams.mustache

@@ -1 +1 @@
-{{#isQueryParam}}{{#useBeanValidation}}{{>beanValidationQueryParams}}{{/useBeanValidation}}{{#swaggerAnnotations}}@ApiParam(value = "{{{description}}}"{{#required}}, required = true{{/required}}{{#allowableValues}}, allowableValues = "{{#values}}{{{.}}}{{^-last}}, {{/-last}}{{#-last}}{{/-last}}{{/values}}"{{/allowableValues}}{{#defaultValue}}, defaultValue = {{^isString}}"{{/isString}}{{#isString}}{{#isEnum}}"{{/isEnum}}{{/isString}}{{{defaultValue}}}{{^isString}}"{{/isString}}{{#isString}}{{#isEnum}}"{{/isEnum}}{{/isString}}{{/defaultValue}}) {{#useBeanValidation}}@Valid{{/useBeanValidation}}{{/swaggerAnnotations}}{{^isModel}} @RequestParam(value = "{{baseName}}"{{#required}}, required = true{{/required}}{{^required}}, required = false{{/required}}{{#defaultValue}}, defaultValue={{^isString}}"{{/isString}}{{#isString}}{{#isEnum}}"{{/isEnum}}{{/isString}}{{{defaultValue}}}{{^isString}}"{{/isString}}{{#isString}}{{#isEnum}}"{{/isEnum}}{{/isString}}{{/defaultValue}}){{/isModel}} {{paramName}}: {{>optionalDataType}}{{/isQueryParam}}
+{{#isQueryParam}}{{#useBeanValidation}}{{>beanValidationQueryParams}}{{/useBeanValidation}}{{#swaggerAnnotations}}@ApiParam(value = "{{{description}}}"{{#required}}, required = true{{/required}}{{#allowableValues}}, allowableValues = "{{#values}}{{{.}}}{{^-last}}, {{/-last}}{{#-last}}{{/-last}}{{/values}}"{{/allowableValues}}{{#defaultValue}}, defaultValue = {{^isString}}"{{/isString}}{{#isString}}{{#isEnum}}"{{/isEnum}}{{/isString}}{{{defaultValue}}}{{^isString}}"{{/isString}}{{#isString}}{{#isEnum}}"{{/isEnum}}{{/isString}}{{/defaultValue}}) {{#useBeanValidation}}@Valid{{/useBeanValidation}}{{/swaggerAnnotations}}{{^isModel}} @RequestParam(value = "{{baseName}}"{{#required}}, required = true{{/required}}{{^required}}, required = false{{/required}}{{#defaultValue}}, defaultValue={{^isString}}"{{/isString}}{{#isString}}{{#isEnum}}"{{/isEnum}}{{/isString}}{{{defaultValue}}}{{^isString}}"{{/isString}}{{#isString}}{{#isEnum}}"{{/isEnum}}{{/isString}}{{/defaultValue}}){{/isModel}}{{#isDate}} @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE){{/isDate}}{{#isDateTime}} @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME){{/isDateTime}} {{paramName}}: {{>optionalDataType}}{{/isQueryParam}}

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

@@ -279,4 +279,40 @@ public void doGenerateRequestParamForSimpleParam() throws IOException {
         assertFileContains(Paths.get(outputPath + "/src/main/kotlin/org/openapitools/api/CrocodilesApi.kt"), "@RequestParam");
         assertFileContains(Paths.get(outputPath + "/src/main/kotlin/org/openapitools/api/PolarBearsApi.kt"), "@RequestParam");
     }
+
+    @Test
+    public void generateFormatForDateAndDateTimeQueryParam() throws IOException {
+        File output = Files.createTempDirectory("test").toFile().getCanonicalFile();
+        output.deleteOnExit();
+        String outputPath = output.getAbsolutePath().replace('\\', '/');
+
+        OpenAPI openAPI = new OpenAPIParser()
+                .readLocation("src/test/resources/3_0/issue_2053.yaml", null, new ParseOptions()).getOpenAPI();
+
+        KotlinSpringServerCodegen codegen = new KotlinSpringServerCodegen();
+        codegen.setOutputDir(output.getAbsolutePath());
+        codegen.additionalProperties().put(CXFServerFeatures.LOAD_TEST_DATA_FROM_FILE, "true");
+
+        ClientOptInput input = new ClientOptInput();
+        input.openAPI(openAPI);
+        input.config(codegen);
+
+        DefaultGenerator generator = new DefaultGenerator();
+
+        generator.setGeneratorPropertyDefault(CodegenConstants.MODELS, "false");
+        generator.setGeneratorPropertyDefault(CodegenConstants.MODEL_TESTS, "false");
+        generator.setGeneratorPropertyDefault(CodegenConstants.MODEL_DOCS, "false");
+        generator.setGeneratorPropertyDefault(CodegenConstants.APIS, "true");
+        generator.setGeneratorPropertyDefault(CodegenConstants.SUPPORTING_FILES, "false");
+        generator.opts(input).generate();
+
+        assertFileContains(
+                Paths.get(outputPath + "/src/main/kotlin/org/openapitools/api/ElephantsApi.kt"),
+                "@org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE)"
+        );
+        assertFileContains(
+                Paths.get(outputPath + "/src/main/kotlin/org/openapitools/api/ZebrasApi.kt"),
+                "@org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)"
+        );
+    }
 }