002The contents of this file are subject to the Mozilla Public License Version 1.1 
003(the "License"); you may not use this file except in compliance with the License. 
004You may obtain a copy of the License at http://www.mozilla.org/MPL/ 
005Software distributed under the License is distributed on an "AS IS" basis, 
006WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the 
007specific language governing rights and limitations under the License. 
009The Original Code is "Application.java".  Description: 
010"From an HL7 messaging perspective, a consumer of a messages" 
012The Initial Developer of the Original Code is University Health Network. Copyright (C) 
0132002.  All Rights Reserved. 
015Contributor(s): ______________________________________. 
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018GNU General Public License (the  �GPL�), in which case the provisions of the GPL are 
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021of this file under the MPL, indicate your decision by deleting  the provisions above 
022and replace  them with the notice and other provisions required by the GPL License.  
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024this file under either the MPL or the GPL. 
027package ca.uhn.hl7v2.app;
029import ca.uhn.hl7v2.model.Message;
030import ca.uhn.hl7v2.HL7Exception;
033 * <p>From an HL7 messaging perspective, an Application is a consumer of a messages. 
034 * Once a parser parses an incoming message, the message would normally be forwarded 
035 * to an Application of some sort (e.g. a lab system) which would process the 
036 * message in some way meaningful for it, and then return a response.</p>  
037 * <p>If you are wondering how to integrate HAPI into an existing server application, 
038 * this is probably the place.  Create a class that implements Application, then look 
039 * at Responder and SimpleServer to see how to get HAPI to listen for messages on 
040 * a socket and pass them to your Application.</p>
041 * @author  Bryan Tripp
042 * 
043 * @see ApplicationExceptionHandler
044 * @see DefaultApplication
045 * 
046 */
047public interface Application<T extends Message> {
049    /**
050     * Uses the contents of the message for whatever purpose the Application 
051     * has for this message, and returns an appropriate response message.   
052     */
053    public Message processMessage(T in) throws ApplicationException, HL7Exception;
055    /** 
056     * Returns true if this Application wishes to accept the message.  By returning
057     * true, this Application declares itself the recipient of the message, accepts 
058     * responsibility for it, and must be able to respond appropriately to the sending system.  
059     */
060    public boolean canProcess(T in);