/** *  * Copyright 2005 LogicBlaze, Inc. *  * 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;import javax.jms.JMSException;import javax.jms.Message;import javax.jms.MessageListener;import javax.resource.ResourceException;import javax.resource.spi.endpoint.MessageEndpoint;import java.lang.reflect.Method;/** * An endpoint which uses a JMS {@link javax.jms.Message#acknowledge()} to * acknowledge that a message is delivered. * * @version $Revision: 1.1.1.1 $ */public class AcknowledgeEndpoint implements MessageEndpoint, MessageListener {    private MessageListener messageListener;    private Message message;    public AcknowledgeEndpoint(MessageListener messageListener) {        this.messageListener = messageListener;    }    public void beforeDelivery(Method method) throws NoSuchMethodException, ResourceException {    }    public void afterDelivery() throws ResourceException {        if (message == null) {            throw new ResourceException("No message has been delivered yet");        }        try {            message.acknowledge();        }        catch (JMSException e) {            throw new ResourceException(e);        }        finally {            message = null;        }    }    public void release() {    }    public void onMessage(Message message) {        messageListener.onMessage(message);        this.message = message;    }}