/* * Copyright (C) 2005-2009 Alfresco Software Limited. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * As a special exception to the terms and conditions of version 2.0 of * the GPL, you may redistribute this Program in connection with Free/Libre * and Open Source Software ("FLOSS") applications as described in Alfresco's * FLOSS exception. You should have received a copy of the text describing * the FLOSS exception, and it is also available here: * http://www.alfresco.com/legal/licensing" */ package org.alfresco.repo.management; import org.alfresco.service.Managed; import org.springframework.beans.BeansException; import org.springframework.context.ApplicationContext; import org.springframework.context.ApplicationContextAware; /** * A configurable proxy for a set of {@link ManagedApplicationContextFactory} beans that allows dynamic selection of one * or more alternative subsystems via {@link #setSourceBeanName}. As with other {@link ManagedBean}s, can be stopped, * reconfigured, started and tested. Doesn't actually implement FactoryBean because we need first class access to the * factory itself to be able to configure its properties. */ public class SwitchableManagedApplicationContextFactory implements ApplicationContextAware, ManagedApplicationContextFactory { /** The parent application context. */ private ApplicationContext parent; /** The bean name of the source {@link ManagedApplicationContextFactory}. */ private String sourceBeanName; /** The current source application context factory. */ private ManagedApplicationContextFactory sourceApplicationContextFactory; /** * Sets the bean name of the source {@link ManagedApplicationContextFactory}. * * @param sourceBeanName * the bean name * @throws Exception * on error */ @Managed(category = "management") public synchronized void setSourceBeanName(String sourceBeanName) throws Exception { if (this.sourceApplicationContextFactory != null) { destroy(); this.sourceBeanName = sourceBeanName; onStart(); } else { this.sourceBeanName = sourceBeanName; } } /* * (non-Javadoc) * @see org.springframework.context.ApplicationContextAware#setApplicationContext(org.springframework.context. * ApplicationContext) */ public void setApplicationContext(ApplicationContext applicationContext) throws BeansException { this.parent = applicationContext; } /* * (non-Javadoc) * @see org.alfresco.enterprise.repo.management.ConfigurableBean#onStart() */ public synchronized void onStart() { this.sourceApplicationContextFactory = (ManagedApplicationContextFactory) this.parent .getBean(this.sourceBeanName); this.sourceApplicationContextFactory.onStart(); } /* * (non-Javadoc) * @see org.alfresco.enterprise.repo.management.ConfigurableBean#onTest() */ public synchronized void onTest() { if (this.sourceApplicationContextFactory != null) { this.sourceApplicationContextFactory.onTest(); } } /* * (non-Javadoc) * @see org.springframework.beans.factory.DisposableBean#destroy() */ public synchronized void destroy() throws Exception { if (this.sourceApplicationContextFactory != null) { this.sourceApplicationContextFactory.destroy(); } this.sourceApplicationContextFactory = null; } /* * (non-Javadoc) * @see org.alfresco.repo.management.ManagedApplicationContextFactory#getApplicationContext() */ public synchronized ApplicationContext getApplicationContext() { if (this.sourceApplicationContextFactory == null) { onStart(); } return this.sourceApplicationContextFactory.getApplicationContext(); } }