1 /**
2 * The contents of this file are subject to the Mozilla Public License Version 1.1
3 * (the "License"); you may not use this file except in compliance with the License.
4 * You may obtain a copy of the License at http://www.mozilla.org/MPL/
5 * Software distributed under the License is distributed on an "AS IS" basis,
6 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the
7 * specific language governing rights and limitations under the License.
8 *
9 * The Original Code is "Field.java". Description:
10 * Auxilliary model class encapsulating field repetitions and substructures
11 *
12 * The Initial Developer of the Original Code is University Health Network. Copyright (C)
13 * 2001-2013. All Rights Reserved.
14 *
15 * Contributor(s): ______________________________________.
16 *
17 * Alternatively, the contents of this file may be used under the terms of the
18 * GNU General Public License (the �GPL�), in which case the provisions of the GPL are
19 * applicable instead of those above. If you wish to allow use of your version of this
20 * file only under the terms of the GPL and not to allow others to use your version
21 * of this file under the MPL, indicate your decision by deleting the provisions above
22 * and replace them with the notice and other provisions required by the GPL License.
23 * If you do not delete the provisions above, a recipient may use your version of
24 * this file under either the MPL or the GPL.
25 *
26 */
27 package ca.uhn.hl7v2.model;
28
29 import ca.uhn.hl7v2.HL7Exception;
30 import ca.uhn.hl7v2.Location;
31
32 /**
33 * Field is a auxiliary model class only created while visiting parts of the
34 * message.
35 */
36 public class Field implements Visitable {
37
38 private final Type[] reps;
39 private final int maxCardinality;
40
41
42 public Field(Type[] reps, int maxCardinality) {
43 super();
44 this.reps = reps;
45 this.maxCardinality = maxCardinality;
46 }
47
48 public boolean accept(MessageVisitor visitor, Location currentLocation) throws HL7Exception {
49 if (visitor.start(this, currentLocation)) {
50 for (int i=0; i < reps.length; i++) {
51 Type t = reps[i];
52 Location nextLocation = currentLocation;
53 if (reps.length > 1) {
54 nextLocation = provideLocation(currentLocation, currentLocation.getField(), i);
55 }
56 if (!t.accept(visitor, nextLocation))
57 break;
58 }
59 }
60 return visitor.end(this, currentLocation);
61 }
62
63 public Location/../ca/uhn/hl7v2/Location.html#Location">Location provideLocation(Location parentLocation, int index, int repetition) {
64 return new Location(parentLocation).withField(index).withFieldRepetition(repetition);
65 }
66
67 public boolean isEmpty() {
68 return reps.length == 0;
69 }
70
71 }