| /* |
| * 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.implementation.java.injection; |
| |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| import java.security.AccessController; |
| import java.security.PrivilegedAction; |
| |
| import org.apache.tuscany.sca.core.factory.ObjectCreationException; |
| import org.apache.tuscany.sca.core.factory.ObjectFactory; |
| |
| /** |
| * Injects a value created by an {@link org.apache.tuscany.sca.core.factory.ObjectFactory} using a given method |
| * |
| * @version $Rev$ $Date$ |
| */ |
| public class MethodInjector<T> implements Injector<T> { |
| private final Method method; |
| private final ObjectFactory<?> objectFactory; |
| |
| public MethodInjector(Method aMethod, ObjectFactory<?> objectFactory) { |
| assert aMethod != null; |
| assert objectFactory != null; |
| this.method = aMethod; |
| // Allow privileged access to set accessibility. Requires ReflectPermission in security |
| // policy. |
| AccessController.doPrivileged(new PrivilegedAction<Object>() { |
| public Object run() { |
| method.setAccessible(true); |
| return null; |
| } |
| }); |
| this.objectFactory = objectFactory; |
| } |
| |
| public void inject(T instance) throws ObjectCreationException { |
| try { |
| method.invoke(instance, objectFactory.getInstance()); |
| } catch (IllegalAccessException e) { |
| throw new ObjectCreationException("Method is not accessible [" + method + "]", e); |
| } catch (IllegalArgumentException e) { |
| throw new ObjectCreationException("Exception thrown by setter: " + method.getName(), e); |
| } catch (InvocationTargetException e) { |
| throw new ObjectCreationException("Exception thrown by setter: " + method.getName(), e); |
| } |
| } |
| } |