| /* |
| * 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.batchee.tools.services.thread; |
| |
| import java.util.Properties; |
| import java.util.Set; |
| |
| import javax.enterprise.context.spi.CreationalContext; |
| import javax.enterprise.inject.spi.Bean; |
| import javax.enterprise.inject.spi.BeanManager; |
| |
| import org.apache.batchee.container.cdi.BatchCDIInjectionExtension; |
| import org.apache.batchee.spi.BatchThreadPoolService; |
| |
| /** |
| * This is an implementation of a {@link org.apache.batchee.spi.BatchThreadPoolService} |
| * which uses an @Asynchronous EJB method to spawn new Threads. |
| * The main reason for doing this is to have properly setup JavaEE Threads even |
| * in JavaEE 6 environments where BatchEE is not deeply integrated in other ways. |
| * |
| * Activate this class in a batchee.properties files as |
| * <pre> |
| * BatchThreadPoolService=org.apache.batchee.tools.services.thread.AsyncEjbBatchThreadPoolService |
| * </pre> |
| * |
| * For some containers you might additionally need to enable the |
| * {@link org.apache.batchee.tools.services.thread.UserTransactionTransactionService} for |
| * proper JTA transaction handling. |
| * |
| */ |
| public class AsyncEjbBatchThreadPoolService implements BatchThreadPoolService { |
| |
| private BeanManager beanManager; |
| private ThreadExecutorEjb threadExecutorEjb; |
| |
| @Override |
| public void init(Properties batchConfig) { |
| beanManager = BatchCDIInjectionExtension.getInstance().getBeanManager(); |
| |
| Set<Bean<?>> beans = beanManager.getBeans(ThreadExecutorEjb.class); |
| Bean<?> bean = beanManager.resolve(beans); |
| CreationalContext cc = beanManager.createCreationalContext(bean); |
| |
| threadExecutorEjb = (ThreadExecutorEjb) beanManager.getReference(bean, bean.getBeanClass(), cc); |
| } |
| |
| @Override |
| public void executeTask(Runnable work, Object config) { |
| threadExecutorEjb.executeTask(work, config); |
| } |
| |
| @Override |
| public void shutdown() { |
| // We cannot force an async EJB to shutdown. |
| // This usually works out of the box if the container EJB |
| // undeploys or stops the application. |
| } |
| } |