/** *  * Copyright 2005 LogicBlaze, Inc. http://www.logicblaze.com *  * Licensed 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.jencks.factory;import java.util.Map;import org.apache.geronimo.transaction.context.GeronimoTransactionManager;import org.apache.geronimo.transaction.context.TransactionContextManager;import org.springframework.beans.factory.FactoryBean;import org.springframework.beans.factory.InitializingBean;import org.springframework.context.ApplicationContext;import org.springframework.context.ApplicationContextAware;/** * This FactoryBean creates and configures the Geronimo implementation * of the UserTransaction and TransactionManager interfaces. * <p/> * This factory is based on the Geronimo Transaction Context Manager. * * @version $Revision: 1.1 $ * @author <a href="mailto:gnt@codehaus.org">Guillaume Nodet</a> * @see org.apache.geronimo.transaction.context.GeronimoTransactionManager */public class GeronimoTransactionManagerFactoryBean implements FactoryBean, InitializingBean, ApplicationContextAware {	private GeronimoTransactionManager transactionManager;	private ApplicationContext applicationContext;    private TransactionContextManager transactionContextManager;		public Object getObject() throws Exception {		return transactionManager;	}	public Class getObjectType() {		return GeronimoTransactionManager.class;	}	public boolean isSingleton() {		return true;	}	public void afterPropertiesSet() throws Exception {		transactionManager = new GeronimoTransactionManager(getTransactionContextManager());	}	public void setApplicationContext(ApplicationContext applicationContext) {		this.applicationContext = applicationContext;	}	public TransactionContextManager getTransactionContextManager() {		if (transactionContextManager == null) {			Map map = applicationContext.getBeansOfType(TransactionContextManager.class);			if (map.size() == 1) {				transactionContextManager = (TransactionContextManager) map.values().iterator().next();			} else {				throw new IllegalStateException("no TransactionContextManager is registered");			}		}		return transactionContextManager;	}	public void setTransactionContextManager(TransactionContextManager transactionContextManager) {		this.transactionContextManager = transactionContextManager;	}}