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Apache CXF example source code file (PerRequestResourceProvider.java)
The Apache CXF PerRequestResourceProvider.java source code/** * 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.cxf.jaxrs.lifecycle; import java.lang.reflect.Constructor; import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; import javax.ws.rs.WebApplicationException; import javax.ws.rs.core.Response; import org.apache.cxf.jaxrs.utils.InjectionUtils; import org.apache.cxf.jaxrs.utils.ResourceUtils; import org.apache.cxf.message.Message; public class PerRequestResourceProvider implements ResourceProvider { private Constructor<?> c; private Method postConstructMethod; private Method preDestroyMethod; public PerRequestResourceProvider(Class<?> clazz) { c = ResourceUtils.findResourceConstructor(clazz, true); if (c == null) { throw new RuntimeException("Resource class " + clazz + " has no valid constructor"); } postConstructMethod = ResourceUtils.findPostConstructMethod(clazz); preDestroyMethod = ResourceUtils.findPreDestroyMethod(clazz); } public boolean isSingleton() { return false; } public Object getInstance(Message m) { return createInstance(m); } protected Object createInstance(Message m) { Object[] values = ResourceUtils.createConstructorArguments(c, m); try { Object instance = values.length > 0 ? c.newInstance(values) : c.newInstance(new Object[]{}); InjectionUtils.invokeLifeCycleMethod(instance, postConstructMethod); return instance; } catch (InstantiationException ex) { String msg = "Resource class " + c.getDeclaringClass().getName() + " can not be instantiated"; throw new WebApplicationException(Response.serverError().entity(msg).build()); } catch (IllegalAccessException ex) { String msg = "Resource class " + c.getDeclaringClass().getName() + " can not be instantiated" + " due to IllegalAccessException"; throw new WebApplicationException(Response.serverError().entity(msg).build()); } catch (InvocationTargetException ex) { String msg = "Resource class " + c.getDeclaringClass().getName() + " can not be instantiated" + " due to InvocationTargetException"; throw new WebApplicationException(Response.serverError().entity(msg).build()); } } public void releaseInstance(Message m, Object o) { InjectionUtils.invokeLifeCycleMethod(o, preDestroyMethod); } public Class<?> getResourceClass() { return c.getDeclaringClass(); } } Other Apache CXF examples (source code examples)Here is a short list of links related to this Apache CXF PerRequestResourceProvider.java source code file: |
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