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 "OnlyKnownSegmentsRule.java".  Description: 
010"Validation rule for detecting unknown Segments in a message" 
011
012The Initial Developer of the Original Code is University Health Network. Copyright (C) 
0132012.  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.builder.support;
027
028import java.util.ArrayList;
029import java.util.Iterator;
030import java.util.List;
031
032import ca.uhn.hl7v2.Location;
033import ca.uhn.hl7v2.model.GenericSegment;
034import ca.uhn.hl7v2.model.Message;
035import ca.uhn.hl7v2.model.Structure;
036import ca.uhn.hl7v2.util.ReadOnlyMessageIterator;
037import ca.uhn.hl7v2.validation.MessageRule;
038import ca.uhn.hl7v2.validation.ValidationException;
039import ca.uhn.hl7v2.validation.impl.AbstractMessageRule;
040
041/**
042 * Validation rule for detecting unknown segments in a message
043 * 
044 * @author Christian Ohr
045 */
046@SuppressWarnings("serial")
047public class OnlyKnownSegmentsRule extends AbstractMessageRule {
048
049        public static final MessageRule ONLY_KNOWN_SEGMENTS = new OnlyKnownSegmentsRule();
050        
051        public ValidationException[] apply(Message msg) {
052                List<ValidationException> exceptions = new ArrayList<ValidationException>();
053
054                for (Iterator<Structure> iter = ReadOnlyMessageIterator
055                                .createPopulatedStructureIterator(msg, GenericSegment.class); iter.hasNext();) {
056                        String segmentName = iter.next().getName();
057                        ValidationException ve = new ValidationException("Found unknown segment: " + segmentName);
058                        Location location = new Location().withSegmentName(segmentName);
059                        ve.setLocation(location);
060                        exceptions.add(ve);
061                }
062                return exceptions.toArray(new ValidationException[exceptions.size()]);
063        }
064
065}