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Diffstat (limited to '')
-rw-r--r-- | sca-java-2.x/tags/2.0-Beta1-RC2/modules/binding-rest-runtime/src/main/java/org/apache/tuscany/sca/binding/rest/provider/JAXRSHelper.java | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0-Beta1-RC2/modules/binding-rest-runtime/src/main/java/org/apache/tuscany/sca/binding/rest/provider/JAXRSHelper.java b/sca-java-2.x/tags/2.0-Beta1-RC2/modules/binding-rest-runtime/src/main/java/org/apache/tuscany/sca/binding/rest/provider/JAXRSHelper.java new file mode 100644 index 0000000000..2bf95f0677 --- /dev/null +++ b/sca-java-2.x/tags/2.0-Beta1-RC2/modules/binding-rest-runtime/src/main/java/org/apache/tuscany/sca/binding/rest/provider/JAXRSHelper.java @@ -0,0 +1,80 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.tuscany.sca.binding.rest.provider; + +import java.lang.annotation.Annotation; +import java.lang.reflect.Method; + +import javax.ws.rs.HttpMethod; +import javax.ws.rs.Path; + +/** + * A utility class that deals with JAX-RS annotations + */ +public class JAXRSHelper { + private JAXRSHelper() { + + } + + /** + * A resource class is a Java class that uses JAX-RS annotations to implement a corresponding Web resource. + * Resource classes are POJOs that have at least one method annotated with @Path or a request method designator. + * @param cls + * @return + */ + public static boolean isJAXRSResource(Class<?> cls) { + for (Method method : cls.getMethods()) { + if (method.isAnnotationPresent(Path.class)) { + return true; + } + if (isResourceMethod(method)) { + return true; + } + } + return false; + } + + /** + * Root resource class is a resource class annotated with @Path. Root resource classes provide the roots of the + * resource class tree and provide access to sub-resources + * @param cls + * @return + */ + public static boolean isJAXRSRootResource(Class<?> cls) { + return cls.isAnnotationPresent(Path.class) && isJAXRSResource(cls); + } + + public static boolean isResourceMethod(Method method) { + for (Annotation a : method.getAnnotations()) { + Class<?> annotationType = a.annotationType(); + if (annotationType == HttpMethod.class) { + return true; + } + // Http method related annotations such as @GET, @POST will have itself annotated with + // @HttpMethod + HttpMethod m = a.annotationType().getAnnotation(HttpMethod.class); + if (m != null) { + return true; + } + } + return false; + + } +} |