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16 package org.apache.ws.jaxme.generator.sg.impl.ccsg;
17
18 import javax.xml.bind.ValidationEvent;
19
20 import org.apache.ws.jaxme.ValidationEvents;
21 import org.apache.ws.jaxme.generator.sg.ComplexTypeSG;
22 import org.apache.ws.jaxme.generator.sg.GroupSG;
23 import org.apache.ws.jaxme.generator.sg.ParticleSG;
24 import org.apache.ws.jaxme.impl.JMUnmarshallerHandlerImpl;
25 import org.apache.ws.jaxme.js.DirectAccessible;
26 import org.apache.ws.jaxme.js.JavaComment;
27 import org.apache.ws.jaxme.js.JavaField;
28 import org.apache.ws.jaxme.js.JavaMethod;
29 import org.apache.ws.jaxme.js.JavaSource;
30 import org.apache.ws.jaxme.js.LocalJavaField;
31 import org.xml.sax.SAXException  ;
32
33
34
39 public class ChoiceHandlerSG extends GroupHandlerSG {
40 private JavaField childNumField;
41
42
46 public ChoiceHandlerSG(ComplexTypeSG pType, JavaSource pJs)
47 throws SAXException {
48 super(pType, pJs);
49 }
50
51 ChoiceHandlerSG(GroupHandlerSG pOuterHandler, ComplexTypeSG pType,
52 GroupSG pGroup, JavaSource pJs)
53 throws SAXException {
54 super(pOuterHandler, pType, pGroup, pJs);
55 }
56
57 protected int getState(int pParticleNum) { return pParticleNum; }
58
59 protected void acceptParticle(JavaMethod pJm, int pNum) throws SAXException {
60 pJm.addIf(getStateField());
61 ParticleSG particle = particles[pNum];
62 pJm.addIf(getChildNumField(), " != " + pNum);
63 pJm.addLine("getHandler().validationEvent(", ValidationEvent.class, ".WARNING, ",
64 JavaSource.getQuoted("Multiple different particles present in a choive group."),
65 ", ", ValidationEvents.class, ".EVENT_CHOICE_GROUP_REUSE, null);");
66 if (!particles[pNum].isMultiple()) {
67 pJm.addElse();
68 if (particle.isElement()) {
69 pJm.addLine("getHandler().validationEvent(", ValidationEvent.class, ".WARNING, ",
70 JavaSource.getQuoted("The element " + particle.getObjectSG().getName() +
71 " has already been defined."),
72 ", ", ValidationEvents.class, ".EVENT_CHOICE_GROUP_REUSE, null);");
73 } else if (particle.isGroup()) {
74 pJm.addLine("getHandler().validationEvent(", ValidationEvent.class, ".WARNING, ",
75 JavaSource.getQuoted("The group " + GroupUtil.getGroupName(particle.getGroupSG()) +
76 " has already been defined."),
77 ", ", ValidationEvents.class, ".EVENT_CHOICE_GROUP_REUSE, null);");
78 } else if (particle.isWildcard()) {
79 throw new IllegalStateException ("TODO: Add support for wildcards.");
80 } else {
81 throw new IllegalStateException ("Invalid particle type");
82 }
83 }
84 pJm.addEndIf();
85 pJm.addEndIf();
86 pJm.addLine(getStateField(), " = true;");
87 pJm.addLine(getChildNumField(), " = " + pNum + ";");
88 }
89
90 public JavaMethod newStartElementMethod() throws SAXException {
91 JavaMethod result = super.newStartElementMethod();
92 LocalJavaField unmarshallerHandler = result.newJavaField(JMUnmarshallerHandlerImpl.class);
93 unmarshallerHandler.addLine("getHandler()");
94 handleStartElementStates(unmarshallerHandler, result, 0, particles.length-1);
95 result.addLine("return false;");
96 return result;
97 }
98
99 private JavaField getChildNumField() {
100 if (childNumField == null) {
101 childNumField = getJavaSource().newJavaField("__childNum", int.class, JavaSource.PRIVATE);
102 JavaComment jc = childNumField.newComment();
103 jc.addLine("Index of the particle being currently parsed");
104 }
105 return childNumField;
106 }
107
108 protected DirectAccessible getEndElementState() throws SAXException {
109 return getChildNumField();
110 }
111
112 public JavaMethod newIsFinishedMethod() throws SAXException {
113 JavaMethod result = super.newIsFinishedMethod();
114 Object o = getStateField();
115 for (int i = 0; i < particles.length; i++) {
116 if (!isRequiredParticle(particles[i])) {
117 o = "true";
118 break;
119 }
120 }
121 result.addLine("return ", o, ";");
122 return result;
123 }
124
125 protected JavaField newStateField() throws SAXException {
126 JavaField jf = getJavaSource().newJavaField("__state", boolean.class, JavaSource.PRIVATE);
127 JavaComment jc = jf.newComment();
128 jc.addLine("Will be set to true, if the first child is parsed.");
129 jc.addLine("It is an error, if another child is parsed, and the");
130 jc.addLine("fields value is true.");
131 return jf;
132 }
133 }
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