alertnotification.java

开放源码的smpp协议开发包

/*
 * Java SMPP API
 * Copyright (C) 1998 - 2002 by Oran Kelly
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * 
 * A copy of the LGPL can be viewed at http://www.gnu.org/copyleft/lesser.html
 * Java SMPP API author: [e-mail]
 * Java SMPP API Homepage: http://smppapi.sourceforge.net/
 * $Id: AlertNotification.java,v 1.6 2005/05/09 21:04:46 orank Exp $
 */
package ie.omk.smpp.message;

import ie.omk.smpp.Address;

import java.io.OutputStream;

/**
 * Alert notification. This packet type is sent from the SMSC to an ESME to
 * signal that a particular mobile subscriber has become available and a
 * delivery pending flag had previously been set for that subscriber by a
 * <code>data_sm</code> packet.
 * <p>
 * Note that there is no response packet to an <code>alert_notification</code>.
 * 
 * @version 1.0
 * @author Oran Kelly
 */
public class AlertNotification extends SMPPRequest {
    /**
     * Create a new alert_notification object.
     */
    public AlertNotification() {
        super(ALERT_NOTIFICATION);
    }

    /**
     * Create a new alert_notification object with sequence number
     * <code>seqNum</code>.
     */
    public AlertNotification(int seqNum) {
        super(ALERT_NOTIFICATION, seqNum);
    }

    public int getBodyLength() {
        return (((source != null) ? source.getLength() : 3) + ((destination != null) ? destination
                .getLength()
                : 3));
    }

    public void encodeBody(OutputStream out) throws java.io.IOException {
        if (source != null)
            source.writeTo(out);
        else
            new Address().writeTo(out);

        if (destination != null)
            destination.writeTo(out);
        else
            new Address().writeTo(out);
    }

    public void readBodyFrom(byte[] body, int offset)
            throws SMPPProtocolException {
        source = new Address();
        source.readFrom(body, offset);
        offset += source.getLength();

        destination = new Address();
        destination.readFrom(body, offset);
    }

    public String toString() {
        return ("alert_notification");
    }
}