gov.nih.nci.cabig.caaers.esb.client.impl.CaaersConnectionFactory.java Source code

Introduction

Here is the source code for gov.nih.nci.cabig.caaers.esb.client.impl.CaaersConnectionFactory.java

Source

/*******************************************************************************
 * Copyright SemanticBits, Northwestern University and Akaza Research
 * 
 * Distributed under the OSI-approved BSD 3-Clause License.
 * See http://ncip.github.com/caaers/LICENSE.txt for details.
 ******************************************************************************/
package gov.nih.nci.cabig.caaers.esb.client.impl;

import gov.nih.nci.cabig.caaers.CaaersConfigurationException;
import gov.nih.nci.cabig.caaers.tools.configuration.Configuration;

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

import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * 
 * @author Rhett Sutphin
 */

public class CaaersConnectionFactory implements ConnectionFactory {
    private ConnectionFactory delegate;

    private Configuration configuration;

    private static final Log log = LogFactory.getLog(CaaersConnectionFactory.class);

    public CaaersConnectionFactory(Configuration configuration) throws Exception {
        this.configuration = configuration;
    }

    public Connection createConnection() throws JMSException {
        return createConnection(null, null);
    }

    public Connection createConnection(String username, String password) throws JMSException {
        if (delegate == null) {
            delegate = createDelegate(configuration.get(Configuration.ESB_URL));
        }
        return delegate.createConnection(username, password);
    }

    protected ConnectionFactory createDelegate(final String url) {
        if (url == null) {
            throw new CaaersConfigurationException(
                    "No ESB Queue URL set.  Please set the property and then restart caAERS.");
        }

        ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory();
        factory.setBrokerURL(url);
        return factory;
    }

    // //// CONFIGURATION

}