abstractrequest.java

一个类似于openJMS分布在ObjectWeb之下的JMS消息中间件。

/*
 * JORAM: Java(TM) Open Reliable Asynchronous Messaging
 * Copyright (C) 2001 - ScalAgent Distributed Technologies
 * Copyright (C) 1996 - Dyade
 *
 * 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 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.
 *
 * Initial developer(s): Frederic Maistre (INRIA)
 * Contributor(s):
 */
package org.objectweb.joram.mom.notifications;

/**
 * An <code>AbstractRequest</code> is a request sent by a client agent to
 * a destination agent.
 */
public abstract class AbstractRequest extends AbstractNotification
{
  /**
   * The <code>requestId</code> field allows a client to identify the request
   * sent to a destination.
   * <p>
   * This field is for the client use only and might not be set.
   */
  private int requestId = -1;


  /**
   * Constructs an <code>AbstractRequest</code>.
   *
   * @param clientContext  Identifies a client context.
   * @param requestId  Identifies the request.
   */
  public AbstractRequest(int clientContext, int requestId)
  {
    super(clientContext);
    this.requestId = requestId;
  }


  /**
   * Constructs an <code>AbstractRequest</code>.
   */
  public AbstractRequest()
  {}


  /** Returns the request identifier. */
  public int getRequestId()
  {
    return requestId;
  }

  /**
   * Appends a string image for this object to the StringBuffer parameter.
   *
   * @param output
   *	buffer to fill in
   * @return
	<code>output</code> buffer is returned
   */
  public StringBuffer toString(StringBuffer output) {
    output.append('(');
    super.toString(output);
    output.append(",requestId=").append(requestId);
    output.append(')');

    return output;
  }
}