Add defaultInterfaces config key to spring2 template

Author: sonOfRa

src/main/java/io/swagger/codegen/v3/generators/java/Spring2Codegen.java

@@ -43,6 +43,7 @@ public class Spring2Codegen extends AbstractJavaCodegen implements BeanValidatio
     public static final String IMPLICIT_HEADERS = "implicitHeaders";
     public static final String SWAGGER_DOCKET_CONFIG = "swaggerDocketConfig";
     public static final String TARGET_OPENFEIGN = "generateForOpenFeign";
+    public static final String DEFAULT_INTERFACES = "defaultInterfaces";
 
     protected String title = "swagger-petstore";
     protected String configPackage = "io.swagger.configuration";
@@ -60,6 +61,7 @@ public class Spring2Codegen extends AbstractJavaCodegen implements BeanValidatio
     protected boolean swaggerDocketConfig = false;
     protected boolean useOptional = false;
     protected boolean openFeign = false;
+    protected boolean defaultInterfaces = true;
 
     public Spring2Codegen() {
         super();
@@ -91,6 +93,7 @@ public Spring2Codegen() {
         cliOptions.add(CliOption.newBoolean(USE_OPTIONAL,
                 "Use Optional container for optional parameters"));
         cliOptions.add(CliOption.newBoolean(TARGET_OPENFEIGN,"Generate for usage with OpenFeign (instead of feign)"));
+        cliOptions.add(CliOption.newBoolean(DEFAULT_INTERFACES, "Generate default implementations for interfaces").defaultValue("true"));
 
         supportedLibraries.put(DEFAULT_LIBRARY, "Spring-boot Server application using the SpringFox integration.");
         supportedLibraries.put(SPRING_MVC_LIBRARY, "Spring-MVC Server application using the SpringFox integration.");
@@ -207,6 +210,10 @@ public void processOpts() {
             this.setOpenFeign(convertPropertyToBoolean(TARGET_OPENFEIGN));
         }
 
+        if (additionalProperties.containsKey(DEFAULT_INTERFACES)) {
+            this.setDefaultInterfaces(Boolean.valueOf(additionalProperties.get(DEFAULT_INTERFACES).toString()));
+        }
+
         if (useBeanValidation) {
             writePropertyBack(USE_BEANVALIDATION, useBeanValidation);
         }
@@ -760,4 +767,8 @@ public void setUseOptional(boolean useOptional) {
     public void setOpenFeign(boolean openFeign) {
         this.openFeign = openFeign;
     }
+
+    public void setDefaultInterfaces(boolean defaultInterfaces) {
+        this.defaultInterfaces = defaultInterfaces;
+    }
 }

src/main/resources/handlebars/JavaSpring2/api.mustache

@@ -102,7 +102,7 @@ public interface {{classname}} {
         produces = { {{#produces}}"{{{mediaType}}}"{{#hasMore}}, {{/hasMore}}{{/produces}} }, {{/hasProduces}}{{#hasConsumes}}
         consumes = { {{#consumes}}"{{{mediaType}}}"{{#hasMore}}, {{/hasMore}}{{/consumes}} },{{/hasConsumes}}{{/singleContentTypes}}
         method = RequestMethod.{{httpMethod}})
-    {{#jdk8}}default {{/jdk8}}{{#responseWrapper}}{{.}}<{{/responseWrapper}}ResponseEntity<{{>returnTypes}}>{{#responseWrapper}}>{{/responseWrapper}} {{#delegate-method}}_{{/delegate-method}}{{operationId}}({{#parameters}}{{>queryParams}}{{>pathParams}}{{>headerParams}}{{>bodyParams}}{{>formParams}}{{#hasMore}},{{/hasMore}}{{/parameters}}){{^jdk8}};{{/jdk8}}{{#jdk8}} {
+    {{#defaultInterfaces}}default {{/defaultInterfaces}}{{#responseWrapper}}{{.}}<{{/responseWrapper}}ResponseEntity<{{>returnTypes}}>{{#responseWrapper}}>{{/responseWrapper}} {{#delegate-method}}_{{/delegate-method}}{{operationId}}({{#parameters}}{{>queryParams}}{{>pathParams}}{{>headerParams}}{{>bodyParams}}{{>formParams}}{{#hasMore}},{{/hasMore}}{{/parameters}}){{^defaultInterfaces}};{{/defaultInterfaces}}{{#defaultInterfaces}} {
         {{#delegate-method}}
         return {{operationId}}({{#parameters}}{{paramName}}{{#hasMore}}, {{/hasMore}}{{/parameters}});
     }
@@ -130,7 +130,7 @@ public interface {{classname}} {
         {{#isDelegate}}
         return getDelegate().{{operationId}}({{#parameters}}{{paramName}}{{#hasMore}}, {{/hasMore}}{{/parameters}});
         {{/isDelegate}}
-    }{{/jdk8}}
+    }{{/defaultInterfaces}}
 
 {{/contents}}
 {{/operation}}

src/main/resources/handlebars/JavaSpring2/apiDelegate.mustache

@@ -63,8 +63,8 @@ public interface {{classname}}Delegate {
     /**
      * @see {{classname}}#{{operationId}}
      */
-    {{#jdk8}}default {{/jdk8}}{{#responseWrapper}}{{.}}<{{/responseWrapper}}ResponseEntity<{{>returnTypes}}>{{#responseWrapper}}>{{/responseWrapper}} {{operationId}}({{#parameters}}{{^isFile}} {{>optionalDataType}} {{/isFile}}{{#isFile}}MultipartFile{{/isFile}} {{paramName}}{{#hasMore}},
-        {{/hasMore}}{{/parameters}}){{^jdk8}};{{/jdk8}}{{#jdk8}} {
+    {{#defaultInterfaces}}default {{/defaultInterfaces}}{{#responseWrapper}}{{.}}<{{/responseWrapper}}ResponseEntity<{{>returnTypes}}>{{#responseWrapper}}>{{/responseWrapper}} {{operationId}}({{#parameters}}{{^isFile}} {{>optionalDataType}} {{/isFile}}{{#isFile}}MultipartFile{{/isFile}} {{paramName}}{{#hasMore}},
+        {{/hasMore}}{{/parameters}}){{^defaultInterfaces}};{{/defaultInterfaces}}{{#defaultInterfaces}} {
         if(getObjectMapper().isPresent() && getAcceptHeader().isPresent()) {
         {{#examples}}
             if (getAcceptHeader().get().contains("{{{contentType}}}")) {
@@ -80,7 +80,7 @@ public interface {{classname}}Delegate {
             log.warn("ObjectMapper or HttpServletRequest not configured in default {{classname}} interface so no example is generated");
         }
         return {{#async}}CompletableFuture.completedFuture({{/async}}new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED){{#async}}){{/async}};
-    }{{/jdk8}}
+    }{{/defaultInterfaces}}
 
 {{/contents}}
 {{/operation}}