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1
22
23
28
29 package org.xquark.schema.validation;
30
31 import java.util.*;
32
33 import org.xquark.schema.IdentityConstraint;
34 import org.xquark.schema.SchemaException;
35
36 public class IdentityConstraintBinding extends Object  {
37 private static final String RCSRevision = "$Revision: 1.1 $";
38 private static final String RCSName = "$Name: $";
39
40 static final String LOCAL = "localEntry";
41 static final String PROPAGATED = "propagatedEntry";
42 static final String INVALID = "invalidEntry";
43
44 IdentityConstraint identityConstraint = null;
45 HashMap nodeTable = null;
46 List pendingRefs = null;
47 IdentityConstraintBinding reference = null;
48
49
50 public IdentityConstraintBinding(IdentityConstraint identityConstraint) {
51 this.identityConstraint = identityConstraint;
52 }
53
54 public IdentityConstraint getDefinition() {
55 return identityConstraint;
56 }
57
58 public Map getNodeTable() { return nodeTable; }
59
60 public IdentityConstraintBinding getReference() {
61 return reference;
62 }
63
64 void setReference(IdentityConstraintBinding reference) {
65 this.reference = reference;
66 }
67
68 void registerEntry(List keySequence) throws SchemaException {
69 String prev = null;
70 switch (identityConstraint.getCategory()) {
71 case IdentityConstraint.CATEGORY_UNIQUE:
72 if (nodeTable == null) nodeTable = new HashMap();
73 prev = (String )nodeTable.put(keySequence, LOCAL);
74 if (prev == LOCAL)
75 throw new SchemaException("cvc-identity-constraint.4.1", identityConstraint,
79 new SchemaException(null, "key: "+keySequence));
80 break;
81 case IdentityConstraint.CATEGORY_KEY:
82 if (nodeTable == null) nodeTable = new HashMap();
83 prev = (String )nodeTable.put(keySequence, LOCAL);
84 if (prev == LOCAL)
85 throw new SchemaException("cvc-identity-constraint.4.2.2", identityConstraint,
89 new SchemaException(null, "key: "+keySequence));
90 break;
91 case IdentityConstraint.CATEGORY_KEYREF:
92 if (pendingRefs == null) pendingRefs = new ArrayList();
93 pendingRefs.add(keySequence);
94 break;
95 }
96 }
97
98 void propagateEntries(IdentityConstraintBinding binding) {
99 Map table = binding.getNodeTable();
100 if (table != null) {
101 if (nodeTable == null) nodeTable = new HashMap();
102 Iterator it = table.keySet().iterator();
103 while (it.hasNext()) {
104 Object key = it.next();
105 String prev = (String )nodeTable.get(key);
106 if (prev == null) nodeTable.put(key, PROPAGATED);
107 else if (prev == PROPAGATED) nodeTable.put(key, INVALID);
108 }
109 }
110 }
111
112 void checkPendingRefs() throws SchemaException {
113 if (reference != null && pendingRefs != null ) {
114 Iterator it = pendingRefs.iterator();
115 Map table = reference.getNodeTable();
116 StringBuffer buffer = null;
117 if (table == null) {
118 buffer = new StringBuffer ();
119 while (it.hasNext()) {
120 buffer.append(" ");
121 buffer.append(it.next());
122 }
123 } else {
124 buffer = new StringBuffer ();
125 while (it.hasNext()) {
126 List sequence = (List)it.next();
127 String result = (String )table.get(sequence);
128 if (result == null || result == INVALID) {
129 buffer.append(" ");
130 buffer.append(sequence);
131 }
132 }
133 }
134 if (buffer.length() > 0)
135 throw new SchemaException("cvc-identity-constraint.4.3", identityConstraint,
136 new SchemaException(null, "key sequences:"+buffer));
137 }
138 }
139 }
140 |
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