| /* |
| * 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.context; |
| |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.InvocationTargetException; |
| |
| import org.apache.tuscany.sca.core.factory.InstanceWrapper; |
| import org.apache.tuscany.sca.core.factory.ObjectCreationException; |
| import org.apache.tuscany.sca.core.factory.ObjectFactory; |
| import org.apache.tuscany.sca.implementation.java.injection.Injector; |
| import org.apache.tuscany.sca.implementation.java.invocation.EventInvoker; |
| |
| /** |
| * @version $Rev$ $Date$ |
| */ |
| public class ReflectiveInstanceFactory<T> implements InstanceFactory<T> { |
| private final Constructor<T> ctr; |
| private final ObjectFactory<?>[] ctrArgs; |
| private final Injector<T>[] injectors; |
| private final EventInvoker<T> initInvoker; |
| private final EventInvoker<T> destroyInvoker; |
| |
| public ReflectiveInstanceFactory(Constructor<T> ctr, |
| ObjectFactory<?>[] ctrArgs, |
| Injector<T>[] injectors, |
| EventInvoker<T> initInvoker, |
| EventInvoker<T> destroyInvoker) { |
| this.ctr = ctr; |
| this.ctrArgs = ctrArgs; |
| this.injectors = injectors; |
| this.initInvoker = initInvoker; |
| this.destroyInvoker = destroyInvoker; |
| } |
| |
| public InstanceWrapper<T> newInstance() { |
| T instance; |
| try { |
| if (ctrArgs != null) { |
| Object[] args = new Object[ctrArgs.length]; |
| for (int i = 0; i < args.length; i++) { |
| args[i] = ctrArgs[i].getInstance(); |
| } |
| instance = ctr.newInstance(args); |
| } else { |
| instance = ctr.newInstance(); |
| } |
| } catch (InstantiationException e) { |
| String name = ctr.getDeclaringClass().getName(); |
| throw new AssertionError("Class is not instantiable [" + name + "]"); |
| } catch (IllegalAccessException e) { |
| String name = ctr.getName(); |
| throw new AssertionError("Constructor is not accessible [" + name + "]"); |
| } catch ( |
| InvocationTargetException e) { |
| String name = ctr.getName(); |
| throw new ObjectCreationException("Exception thrown by constructor: " + name, e); |
| } |
| |
| if (injectors != null) { |
| for (Injector<T> injector : injectors) { |
| //FIXME Injectors should never be null |
| if (injector != null) |
| try { |
| injector.inject(instance); |
| } catch (Exception e) { |
| if (destroyInvoker != null) { |
| destroyInvoker.invokeEvent(instance); |
| } |
| throw new ObjectCreationException("Exception invoking injector - " + e.getMessage(), e); |
| } |
| } |
| } |
| |
| return new ReflectiveInstanceWrapper<T>(instance, initInvoker, destroyInvoker); |
| } |
| } |