/**
 * Redistribution and use of this software and associated documentation
 * ("Software"), with or without modification, are permitted provided
 * that the following conditions are met:
 *
 * 1. Redistributions of source code must retain copyright
 *    statements and notices.  Redistributions must also contain a
 *    copy of this document.
 *
 * 2. Redistributions in binary form must reproduce the
 *    above copyright notice, this list of conditions and the
 *    following disclaimer in the documentation and/or other
 *    materials provided with the distribution.
 *
 * 3. The name "Exolab" must not be used to endorse or promote
 *    products derived from this Software without prior written
 *    permission of Exoffice Technologies.  For written permission,
 *    please contact info@exolab.org.
 *
 * 4. Products derived from this Software may not be called "Exolab"
 *    nor may "Exolab" appear in their names without prior written
 *    permission of Exoffice Technologies. Exolab is a registered
 *    trademark of Exoffice Technologies.
 *
 * 5. Due credit should be given to the Exolab Project
 *    (http://www.exolab.org/).
 *
 * THIS SOFTWARE IS PROVIDED BY EXOFFICE TECHNOLOGIES AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
 * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
 * EXOFFICE TECHNOLOGIES OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Copyright 2004-2006 (C) Exoffice Technologies Inc. All Rights Reserved.
 *
 * $Id: ThreadFactory.java,v 1.1 2010/06/18 16:46:19 smhuang Exp $
 */
package org.exolab.jms.common.threads;


/**
 * Thread factory.
 *
 * @author <a href="mailto:tma@netspace.net.au">Tim Anderson</a>
 * @version $Revision: 1.1 $ $Date: 2010/06/18 16:46:19 $
 */
public class ThreadFactory
        implements EDU.oswego.cs.dl.util.concurrent.ThreadFactory {

    /**
     * The thread group which threads will belong to. May be <code>null</code>
     */
    private final ThreadGroup _group;

    /**
     * The name to prefix each thread name with
     */
    private final String _name;

    /**
     * Determines if threads will be daemon threads
     */
    private final boolean _daemon;

    /**
     * Seed value for thread names
     */
    private volatile int _nameSeed = 0;


    /**
     * Construct a new <code>ThreadFactory</code>
     *
     * @param group  the thread group. May be <code>null</code>
     * @param name   the name to prefix each thread name with
     * @param daemon if <code>true</code> all threads will be daemon threads
     */
    public ThreadFactory(ThreadGroup group, String name, boolean daemon) {
        _group = group;
        _name = name;
        _daemon = daemon;
    }

    /**
     * Create a new thread that will run the given command when started
     *
     * @param command the command to run. May be <code>null</code>
     * @return a new thread
     */
    public Thread newThread(Runnable command) {
        String name = null;
        if (_name != null) {
            int suffix = ++_nameSeed;
            name = _name + suffix;
        }
        Thread thread = new Thread(_group, command, name);
        thread.setDaemon(_daemon);
        return thread;
    }
}
