/**
 * The contents of this file are subject to the Mozilla Public License Version 1.1
 * (the "License"); you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at http://www.mozilla.org/MPL/
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the
 * specific language governing rights and limitations under the License.
 *
 * The Original Code is "MessageReceipt.java".  Description:
 * "Returned by Connection.reserveResponse() when calling 
 * classes want to wait for a particular response message."
 *
 * The Initial Developer of the Original Code is University Health Network. Copyright (C)
 * 2002.  All Rights Reserved.
 *
 * Contributor(s): ______________________________________.
 *
 * Alternatively, the contents of this file may be used under the terms of the
 * GNU General Public License (the  “GPL”), in which case the provisions of the GPL are
 * applicable instead of those above.  If you wish to allow use of your version of this
 * file only under the terms of the GPL and not to allow others to use your version
 * of this file under the MPL, indicate your decision by deleting  the provisions above
 * and replace  them with the notice and other provisions required by the GPL License.
 * If you do not delete the provisions above, a recipient may use your version of
 * this file under either the MPL or the GPL.
 */

package ca.uhn.hl7v2.app;

/**
 * Returned by <code>Connection.reserveResponse()</code> when calling 
 * classes want to wait for a particular response message.  
 * When the response is returned by the remote system it is available here.  
 * MessageReceipt.notifyAll() is called when the message arrives, so it 
 * is good practice to wait() on a MessageReceipt.  
 * @author Bryan Tripp
 */
class MessageReceipt {
    String message = null;
        
    /** Sets the text of the message and notifies waiting threads. */
    public synchronized void setMessage(String messageText) {
        message = messageText;
        this.notifyAll();
    }
    
    /** Returns the message text if it has arrived, otherwise null. */
    public synchronized String getMessage() {
        return message;
    }
}