001    /**
002     * 
003     * Copyright 2005 LogicBlaze, Inc. http://www.logicblaze.com
004     * 
005     * Licensed under the Apache License, Version 2.0 (the "License"); 
006     * you may not use this file except in compliance with the License. 
007     * You may obtain a copy of the License at 
008     * 
009     * http://www.apache.org/licenses/LICENSE-2.0
010     * 
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS, 
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
014     * See the License for the specific language governing permissions and 
015     * limitations under the License. 
016     * 
017     **/
018    package org.jencks;
019    
020    import javax.jms.MessageListener;
021    import javax.resource.spi.LocalTransaction;
022    import javax.resource.spi.UnavailableException;
023    import javax.resource.spi.endpoint.MessageEndpoint;
024    import javax.resource.spi.endpoint.MessageEndpointFactory;
025    import javax.transaction.TransactionManager;
026    import javax.transaction.xa.XAResource;
027    import java.lang.reflect.Method;
028    
029    /**
030     * @version $Revision: 1.1.1.1 $
031     */
032    public abstract class EndpointFactorySupport implements MessageEndpointFactory {
033        protected TransactionManager transactionManager;
034    
035        public MessageEndpoint createEndpoint(XAResource xaResource) throws UnavailableException {
036            MessageListener messageListener = createMessageListener();
037            if (transactionManager != null) {
038                return new XAEndpoint(messageListener, xaResource, transactionManager);
039            }
040            else if (xaResource instanceof LocalTransaction) {
041                return new LocalTransactionEndpoint(messageListener, (LocalTransaction) xaResource);
042            }
043            return new AcknowledgeEndpoint(messageListener);
044        }
045    
046        public String toString() {
047            return super.toString() + "[transactionManager=" + transactionManager + "]";
048        }
049    
050        // Properties
051        //-------------------------------------------------------------------------
052        public boolean isDeliveryTransacted(Method method) throws NoSuchMethodException {
053            return transactionManager != null;
054        }
055    
056        public TransactionManager getTransactionManager() {
057            return transactionManager;
058        }
059    
060        public void setTransactionManager(TransactionManager transactionManager) {
061            this.transactionManager = transactionManager;
062        }
063    
064        // Implementation methods
065        //-------------------------------------------------------------------------
066        protected abstract MessageListener createMessageListener() throws UnavailableException;
067    }