Java EE 6 example source code file (JavaMailConnectionEventListener.java)

This example Java EE 6 source code file (JavaMailConnectionEventListener.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 - Java EE 6 tags/keywords

connectionevent, connectionevent, connectioneventlistener, connectioneventlistener, illegal_event_type, javamailconnectioneventlistener, javamailconnectioneventlistener, javamailconnectioneventlistener::constructor, log, logger, logging, managedconnection, object, resourcebundle, util, vector, vector

The Java EE 6 JavaMailConnectionEventListener.java source code

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 1997-2009 Sun Microsystems, Inc. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
 * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
 * Sun designates this particular file as subject to the "Classpath" exception
 * as provided by Sun in the GPL Version 2 section of the License file that
 * accompanied this code.  If applicable, add the following below the License
 * Header, with the fields enclosed by brackets [] replaced by your own
 * identifying information: "Portions Copyrighted [year]
 * [name of copyright owner]"
 *
 * Contributor(s):
 *
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package samples.connectors.mailconnector.ra.outbound;

import javax.resource.spi.*;
import java.util.*;
import java.util.logging.*;

/**
 * The connector architecture provides an event callback mechanism that
 * enables an application server to receive notifications from a
 * ManagedConnection instance. The App Server implements this class in 
 * order to listen to event notifications from ManagedConnection instances.
 */

public class JavaMailConnectionEventListener 
{
    private Vector listeners;
    private ManagedConnection mcon;

    static Logger  logger = 
        Logger.getLogger("samples.connectors.mailconnector.ra.outbound",
            "samples.connectors.mailconnector.ra.outbound.LocalStrings");
    ResourceBundle resource = 
        ResourceBundle.getBundle("samples.connectors.mailconnector.ra.outbound.LocalStrings" );

    /**
     * Constructor.
     *
     * @param mcon  the managed connection that created this instance
     */

    public JavaMailConnectionEventListener(ManagedConnection mcon) 
    {
	logger.fine(" 3C.- JavaMailConnectionEventListener::Constructor");
        listeners = new Vector();
        this.mcon = mcon;
    }

    /**
     * Sends a connection event to the application server.
     *
     * @param eventType  the ConnectionEvent type
     * @param ex  exception indicating a connection-related error
     * @param connectionHandle  the connection handle associated with the 
     *                          ManagedConnection instance
     */

    public void sendEvent(int eventType, Exception ex,
                          Object connectionHandle) 
    {
        Vector list = (Vector) listeners.clone();
        ConnectionEvent ce = null;
        if (ex == null) {
            ce = new ConnectionEvent(mcon, eventType);
        } else {
            ce = new ConnectionEvent(mcon, eventType, ex);
        }
        if (connectionHandle != null) {
            ce.setConnectionHandle(connectionHandle);
        }

        for (int i = 0; i < list.size(); i++) 
	{
            ConnectionEventListener l =
                (ConnectionEventListener) list.elementAt(i);

            switch (eventType) 
	    {
                case ConnectionEvent.CONNECTION_CLOSED:
                    l.connectionClosed(ce);
                    break;
                case ConnectionEvent.LOCAL_TRANSACTION_STARTED:
                    l.localTransactionStarted(ce);
                    break;
                case ConnectionEvent.LOCAL_TRANSACTION_COMMITTED:
                    l.localTransactionCommitted(ce);
                    break;
                case ConnectionEvent.LOCAL_TRANSACTION_ROLLEDBACK:
                    l.localTransactionRolledback(ce);
                    break;
                case ConnectionEvent.CONNECTION_ERROR_OCCURRED:
                    l.connectionErrorOccurred(ce);
                    break;
                default:
                    throw new IllegalArgumentException(resource.getString("ILLEGAL_EVENT_TYPE") + eventType);
            }
        }
    }

    /**
     * Adds a connection event listener to the ManagedConnection Listener 
     * instance. The registered ConnectionEventListener instances are notified
     * of connection close and error events and of local transaction-related 
     * events on the ManagedConnection.
     *
     * @param listener  a new ConnectionEventListener to be registered
     */

    public void addConnectorListener(ConnectionEventListener listener) 
    {
        listeners.addElement(listener);
    }

    /**
     * Removes an already registered connection event listener.
     *
     * @param listener the already registered connection event listener to be 
     *                 removed
     */

    public void removeConnectorListener(ConnectionEventListener listener) 
    {
        listeners.removeElement(listener);
    }
}