spacechannel.java

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/*
 * Copyright (c) 2000 jPOS.org.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 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 end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *    "This product includes software developed by the jPOS project 
 *    (http://www.jpos.org/)". Alternately, this acknowledgment may 
 *    appear in the software itself, if and wherever such third-party 
 *    acknowledgments normally appear.
 *
 * 4. The names "jPOS" and "jPOS.org" must not be used to endorse 
 *    or promote products derived from this software without prior 
 *    written permission. For written permission, please contact 
 *    [e-mail].
 *
 * 5. Products derived from this software may not be called "jPOS",
 *    nor may "jPOS" appear in their name, without prior written
 *    permission of the jPOS project.
 *
 * THIS SOFTWARE IS PROVIDED ``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 THE JPOS PROJECT 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the jPOS Project.  For more
 * information please see <http://www.jpos.org/>.
 */

package org.jpos.space;

import org.jpos.iso.ISOMsg;
import org.jpos.iso.Channel;
import org.jpos.space.Space;
import org.jpos.space.TransientSpace;
import org.jpos.core.Configuration;
import org.jpos.core.ConfigurationException;
import org.jpos.core.ReConfigurable;

/**
 * Space based Channel implementation
 * @author Alejandro Revilla
 * @version $Revision: 1.2 $ $Date: 2002/08/06 14:26:32 $
 * @see org.jpos.iso.Channel
 */
public class SpaceChannel implements Channel, ReConfigurable {
    Space sp;
    Configuration cfg;
    String from, to;
    public SpaceChannel () {
        super ();
        sp = TransientSpace.getSpace ();
    }
    /**
     * @param to    output queue
     * @param from  input  queue
     */
    public SpaceChannel (String to, String from) {
        this ();
        this.to   = to;
        this.from = from;
    }
    /**
     * reads "to" and "from" properties
     * @param cfg 
     */
    public void setConfiguration (Configuration cfg) {
        this.cfg = cfg;
        to       = cfg.get ("to");
        from     = cfg.get ("from");
    }
    /**
     * @param m message to send
     */
    public void send (ISOMsg m) {
        sp.out (to, m);
    }
    /**
     * Blocks until a message is received
     * @return received message
     */
    public ISOMsg receive () {
        return (ISOMsg) sp.in (from);
    }
    /**
     * Blocks for a given period of time until a message is received
     * @param timeout time to wait in millis
     * @return received message
     */
    public ISOMsg receive (long timeout) {
        return (ISOMsg) (timeout == 0 ? sp.inp (from) : sp.in (from, timeout));
    }
}