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ActiveMQ example source code file (AbstractJmsClient.java)

This example ActiveMQ source code file (AbstractJmsClient.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - ActiveMQ tags/keywords

abstractjmsclient, connection, connection, connectionfactory, destination, destination, jms, jmsexception, jmsexception, logger, provider, session, string, string

The ActiveMQ AbstractJmsClient.java source code

/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.activemq.tool;

import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.Session;

import org.apache.activemq.tool.properties.JmsClientProperties;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public abstract class AbstractJmsClient {

    private static final Logger LOG = LoggerFactory.getLogger(AbstractJmsClient.class);

    protected ConnectionFactory factory;
    protected Connection jmsConnection;
    protected Session jmsSession;

    protected int destCount = 1;
    protected int destIndex;
    protected String clientName = "";

    public AbstractJmsClient(ConnectionFactory factory) {
        this.factory = factory;
    }

    public abstract JmsClientProperties getClient();

    public abstract void setClient(JmsClientProperties client);

    public ConnectionFactory getFactory() {
        return factory;
    }

    public void setFactory(ConnectionFactory factory) {
        this.factory = factory;
    }

    public int getDestCount() {
        return destCount;
    }

    public void setDestCount(int destCount) {
        this.destCount = destCount;
    }

    public int getDestIndex() {
        return destIndex;
    }

    public void setDestIndex(int destIndex) {
        this.destIndex = destIndex;
    }

    public String getClientName() {
        return clientName;
    }

    public void setClientName(String clientName) {
        this.clientName = clientName;
    }

    public Connection getConnection() throws JMSException {
        if (jmsConnection == null) {
            jmsConnection = factory.createConnection();
            jmsConnection.setClientID(getClientName());
            LOG.info("Creating JMS Connection: Provider=" + getClient().getJmsProvider() + ", JMS Spec=" + getClient().getJmsVersion());
        }
        return jmsConnection;
    }

    public Session getSession() throws JMSException {
        if (jmsSession == null) {
            int ackMode;
            if (getClient().getSessAckMode().equalsIgnoreCase(JmsClientProperties.SESSION_AUTO_ACKNOWLEDGE)) {
                ackMode = Session.AUTO_ACKNOWLEDGE;
            } else if (getClient().getSessAckMode().equalsIgnoreCase(JmsClientProperties.SESSION_CLIENT_ACKNOWLEDGE)) {
                ackMode = Session.CLIENT_ACKNOWLEDGE;
            } else if (getClient().getSessAckMode().equalsIgnoreCase(JmsClientProperties.SESSION_DUPS_OK_ACKNOWLEDGE)) {
                ackMode = Session.DUPS_OK_ACKNOWLEDGE;
            } else if (getClient().getSessAckMode().equalsIgnoreCase(JmsClientProperties.SESSION_TRANSACTED)) {
                ackMode = Session.SESSION_TRANSACTED;
            } else {
                ackMode = Session.AUTO_ACKNOWLEDGE;
            }
            jmsSession = getConnection().createSession(getClient().isSessTransacted(), ackMode);
        }
        return jmsSession;
    }

    public Destination[] createDestination(int destIndex, int destCount) throws JMSException {

        if (getClient().isDestComposite()) {
            return new Destination[] {
                createCompositeDestination(getClient().getDestName(), destIndex, destCount)
            };
        } else {
            Destination[] dest = new Destination[destCount];
            for (int i = 0; i < destCount; i++) {
                dest[i] = createDestination(getClient().getDestName() + "." + (destIndex + i));
            }

            return dest;
        }
    }

    public Destination createCompositeDestination(int destIndex, int destCount) throws JMSException {
        return createCompositeDestination(getClient().getDestName(), destIndex, destCount);
    }

    protected Destination createCompositeDestination(String name, int destIndex, int destCount) throws JMSException {
        String compDestName;
        String simpleName;

        if (name.startsWith("queue://")) {
            simpleName = name.substring("queue://".length());
        } else if (name.startsWith("topic://")) {
            simpleName = name.substring("topic://".length());
        } else {
            simpleName = name;
        }

        int i;
        compDestName = name + "." + destIndex + ","; // First destination
        for (i = 1; i < destCount - 1; i++) {
            compDestName += simpleName + "." + (destIndex + i) + ",";
        }
        // Last destination (minus the comma)
        compDestName += simpleName + "." + (destIndex + i);

        return createDestination(compDestName);
    }

    protected Destination createDestination(String name) throws JMSException {
        if (name.startsWith("queue://")) {
            return getSession().createQueue(name.substring("queue://".length()));
        } else if (name.startsWith("topic://")) {
            return getSession().createTopic(name.substring("topic://".length()));
        } else {
            return getSession().createTopic(name);
        }
    }

}

Other ActiveMQ examples (source code examples)

Here is a short list of links related to this ActiveMQ AbstractJmsClient.java source code file:

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