001/**
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. 
008
009The Original Code is "MessageRuleBinding.java".  Description: 
010"A RuleBinding that applies to MessageRules." 
011
012The Initial Developer of the Original Code is University Health Network. Copyright (C) 
0132004.  All Rights Reserved. 
014
015Contributor(s): ______________________________________. 
016
017Alternatively, the contents of this file may be used under the terms of the 
018GNU General Public License (the "GPL"), in which case the provisions of the GPL are 
019applicable instead of those above.  If you wish to allow use of your version of this 
020file only under the terms of the GPL and not to allow others to use your version 
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.  
023If you do not delete the provisions above, a recipient may use your version of 
024this file under either the MPL or the GPL. 
025*/
026package ca.uhn.hl7v2.validation.impl;
027
028import java.util.StringTokenizer;
029
030import ca.uhn.hl7v2.validation.MessageRule;
031
032/**
033 * A <code>RuleBinding</code> that applies to <code>MessageRule</code>s. 
034 * 
035 * @author <a href="mailto:bryan.tripp@uhn.on.ca">Bryan Tripp</a>
036 * @version $Revision: 1.1 $ updated on $Date: 2007-02-19 02:24:40 $ by $Author: jamesagnew $
037 */
038@SuppressWarnings("serial")
039public class MessageRuleBinding extends RuleBinding<MessageRule> {
040
041    private String myMessageType;
042    private String myTriggerEvent;
043    private static final String delim = "^";
044    
045    /**
046     * @param theVersion see {@link RuleBinding#getVersion()}
047     * @param theMessageType a value valid for MSH-9-1 or * for all
048     * @param theTriggerEvent a value valid for MSH-9-2 or * for all
049     * @param theRule 
050     */
051    public MessageRuleBinding(String theVersion, String theMessageType, String theTriggerEvent, MessageRule theRule) {
052        super(theVersion, theMessageType + "^" + theTriggerEvent, theRule);
053        myMessageType = theMessageType;
054        myTriggerEvent = theTriggerEvent;
055    }
056    
057    /**
058     * @param theScope must be in the form type^event (ie message type and trigger event separated
059     *      by a carat)
060     */
061    public boolean appliesToScope(String theScope) {
062        
063        if (!theScope.matches(".*\\^.*")) {
064            throw new IllegalArgumentException("arg theScope must be of the form type^event");
065        }
066        
067        StringTokenizer tok = new StringTokenizer(theScope, delim, false);
068        String itemType = tok.nextToken();
069        String itemEvent = tok.nextToken();
070        
071        return (applies(myMessageType, itemType) && applies(myTriggerEvent, itemEvent));
072    }
073
074}