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 java.lang.reflect.Method;
021
022 import javax.jms.MessageListener;
023 import javax.resource.spi.LocalTransaction;
024 import javax.resource.spi.UnavailableException;
025 import javax.resource.spi.endpoint.MessageEndpoint;
026 import javax.resource.spi.endpoint.MessageEndpointFactory;
027 import javax.transaction.TransactionManager;
028 import javax.transaction.xa.XAResource;
029
030 import org.apache.geronimo.transaction.manager.NamedXAResource;
031 import org.apache.geronimo.transaction.manager.WrapperNamedXAResource;
032
033 /**
034 * @version $Revision: 1.5 $
035 */
036 public abstract class EndpointFactorySupport implements MessageEndpointFactory {
037 protected TransactionManager transactionManager;
038 private String name;
039
040 public MessageEndpoint createEndpoint(XAResource xaResource) throws UnavailableException {
041 MessageListener messageListener = createMessageListener();
042 xaResource = wrapXAResource(xaResource);
043 if (transactionManager != null) {
044 return new XAEndpoint(messageListener, xaResource, transactionManager);
045 }
046 else if (xaResource instanceof LocalTransaction) {
047 return new LocalTransactionEndpoint(messageListener, (LocalTransaction) xaResource);
048 }
049 return new AcknowledgeEndpoint(messageListener);
050 }
051
052 public String toString() {
053 return super.toString() + "[transactionManager=" + transactionManager + "]";
054 }
055
056 // Properties
057 //-------------------------------------------------------------------------
058 public boolean isDeliveryTransacted(Method method) throws NoSuchMethodException {
059 return transactionManager != null;
060 }
061
062 public TransactionManager getTransactionManager() {
063 return transactionManager;
064 }
065
066 public void setTransactionManager(TransactionManager transactionManager) {
067 this.transactionManager = transactionManager;
068 }
069
070 public String getName() {
071 return name;
072 }
073
074 public void setName(String name) {
075 this.name = name;
076 }
077
078 // Implementation methods
079 //-------------------------------------------------------------------------
080 protected abstract MessageListener createMessageListener() throws UnavailableException;
081
082 /**
083 * {@link XAResource} instances must be named to support recovery, so either pass
084 * {@link NamedXAResource} instances through or wrap with the Spring name.
085 *
086 * @param xaResource
087 * @return the wrapped XAResource instance
088 */
089 protected XAResource wrapXAResource(XAResource xaResource) {
090 String name = getName();
091 if (xaResource instanceof NamedXAResource || name == null) {
092 return xaResource;
093 }
094 return new WrapperNamedXAResource(xaResource, name);
095 }
096
097 }