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1
22
23 package org.xquark.schema.validation;
24
25 import java.util.ArrayList  ;
26 import java.util.Iterator ;
27 import java.util.List ;
28
29 import org.xquark.schema.*;
30
31 public class ChoiceContentIterator extends ContentIterator {
32 private static final String RCSRevision = "$Revision: 1.1 $";
33 private static final String RCSName = "$Name: $";
34
35 private ChoiceModelGroup group;
36 private int count = 0;
37 private ContentIterator iterator = null;
38
39 public ChoiceContentIterator(Particle particle)
40 {
41 super(particle);
42 group = (ChoiceModelGroup)particle.getTerm();
43 }
44
45 public ElementDeclaration getMatchedDeclaration() {
46 if (iterator != null)
47 return iterator.getMatchedDeclaration();
48 else return null;
49 }
50
51 public ElementDeclaration getModelDeclaration() {
52 if (iterator != null)
53 return iterator.getModelDeclaration();
54 else return null;
55 }
56
57 public int getProcessContents() {
58 if (iterator != null)
59 return iterator.getProcessContents();
60 else return LAX;
61 }
62
63 private ContentIterator selectContentIterator(String namespace, String localName)
64 {
65 Iterator it = group.iterator();
66 ContentIterator result = null;
67
68 if ( reporter != null && count < maxOccurs && parentParticle.hasNextElement(namespace, localName) )
69 reporter.startGroup(parentParticle, ModelGroup.CHOICE, count);
70
71 while (it.hasNext()) {
72 Particle particle = (Particle)it.next();
73 if (particle.hasNextElement(namespace, localName)) {
74 result = ContentIteratorFactory.createIterator(particle, reporter);
75 }
76 else if (reporter != null && parentParticle.hasNextElement(namespace, localName) ) {
80 reporter.alternates(particle);
81 }
82 }
83 return result;
84 }
85
86 protected int nextElement(String namespace, String localName)
87 {
88 ArrayList previousExceptions = null;
90 if (iterator != null) {
91 switch (iterator.nextElement(namespace, localName)) {
92 case MATCHED:
93 return MATCHED;
94 case UNKNOWN:
95 return UNKNOWN;
96 case INVALID:
97 if (iterator.getMatchedDeclaration() != null)
98 return invalidElement(iterator.getExceptions());
99 else
100 return invalidElement("cvc-particle.3.3", parentParticle, iterator.getExceptions());
101 case TOO_MANY:
102 previousExceptions = iterator.getExceptions();
103 case DONE:
105 if (reporter != null)
106 reporter.endGroup(parentParticle, ModelGroup.CHOICE);
107 count++;
108 break;
109 }
111 }
112
113 iterator = selectContentIterator(namespace, localName);
114 if (iterator == null) {
115 if (previousExceptions != null) {
116 return invalidElement("cvc-particle.3.3", parentParticle, previousExceptions);
119 } else if (count == 0 && parentParticle.getMinExtent() > 0) {
120 SchemaException se = SchemaException.computeMinExtentException(parentParticle);
121 return invalidElement(se);
122 } else {
123 return stopProcessing();
125 }
126 }
127 if (count >= maxOccurs) {
128 if (previousExceptions != null)
129 invalidElement("cvc-particle.3.2", parentParticle, previousExceptions);
130 else
131 invalidElement("cvc-particle.3.2", parentParticle);
132 return TOO_MANY;
133 }
134 switch (iterator.nextElement(namespace, localName)) {
135 case MATCHED:
136 return MATCHED;
137 case UNKNOWN:
138 return UNKNOWN;
139 case INVALID:
140 case TOO_MANY:
141 case DONE:
142 default:
143 if (iterator.getMatchedDeclaration() != null)
144 return invalidElement(iterator.getExceptions());
145 else
146 return invalidElement("cvc-particle.3.3", parentParticle, iterator.getExceptions());
147 }
148 }
149
150 public int stopProcessing() {
151 int c;
152 if (iterator != null) {
154 switch (iterator.stopProcessing()) {
155 case INVALID:
156 return invalidElement("cvc-particle.3.3", parentParticle, iterator.getExceptions());
157 case DONE:
158 }
160 if (reporter != null)
161 reporter.endGroup(parentParticle, ModelGroup.CHOICE);
162 c = count+1;
163 } else {
164 c = count;
165 }
166 if (c < minOccurs && parentParticle.getMinExtent() != 0) {
167 return invalidElement("cvc-particle.3.1", parentParticle);
168 } else if (c < maxOccurs && reporter != null) {
169 reporter.skipped(parentParticle);
170 }
171
172 return DONE;
173 }
174
175 protected boolean nextValidElements(List elements) {
176 int c;
177 if (iterator != null) {
179 boolean canStop = iterator.nextValidElements(elements);
180 if (!canStop) return false;
183 c = count+1;
184 } else {
185 c = count;
186 }
187 if (c < maxOccurs && elements != null) {
189 Iterator it = group.iterator();
190 while (it.hasNext()) {
191 Particle particle = (Particle)it.next();
192 elements.addAll(particle.firstValidElements());
193 }
194 }
195 if (c >= minOccurs || parentParticle.getMinExtent() == 0) return true;
198 else return false;
199 }
200
201 }
202
203
204 |
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