|
1
29
30 package com.caucho.xml2;
31
32 import javax.xml.namespace.QName  ;
33
34
37 public class SaxIntern {
38 private static final int SIZE = 203;
39
40 private final Entry []_entries = new Entry[SIZE];
41
42 private final NamespaceContextImpl _namespaceContext;
43
44 SaxIntern(NamespaceContextImpl namespaceContext)
45 {
46 _namespaceContext = namespaceContext;
47 }
48
49 Entry add(char []buffer, int offset, int length, int colon,
50 boolean isAttribute)
51 {
52 int hash = 0;
53
54 for (int i = length - 1; i >= 0; i--) {
55 hash = 37 * hash + buffer[offset + i];
56 }
57
58 int bucket = (hash & 0x7fffffff) % SIZE;
59
60 Entry entry;
61
62 for (entry = _entries[bucket];
63 entry != null;
64 entry = entry._next) {
65 if (entry.match(buffer, offset, length, isAttribute))
66 return entry;
67 }
68
69 entry = new Entry(_entries[bucket],
70 buffer, offset, length,
71 colon,
72 isAttribute);
73 _entries[bucket] = entry;
74
75 return entry;
76 }
77
78 final class Entry {
79 final Entry _next;
80
81 final char []_buf;
82 final boolean _isAttribute;
83
84 final String _prefix;
85 final String _localName;
86
87 final boolean _isXmlns;
88
89 String _name;
90
91 NamespaceBinding _namespace;
92 int _version;
93 QName _qName;
94
95 Entry(Entry next,
96 char []buf, int offset, int length,
97 int colon,
98 boolean isAttribute)
99 {
100 _next = next;
101
102 _buf = new char[length];
103 System.arraycopy(buf, offset, _buf, 0, length);
104
105 _isAttribute = isAttribute;
106
107 if (colon > offset) {
108 _prefix = new String (buf, offset, colon - offset);
109 _localName = new String (buf, colon + 1, length - colon - 1);
110
111 _isXmlns = isAttribute && colon == 5 && "xmlns".equals(_prefix);
112 }
113 else {
114 _prefix = null;
115 _localName = new String (buf, 0, length);
116
117 _isXmlns = isAttribute && length == 5 && "xmlns".equals(_localName);
118 }
119
120 if (_isAttribute)
121 _namespace = _namespaceContext.getAttributeNamespace(_prefix);
122 else
123 _namespace = _namespaceContext.getElementNamespace(_prefix);
124
125 fillQName();
126 }
127
128 public final boolean match(char []buf, int offset, int length,
129 boolean isAttribute)
130 {
131 if (length != _buf.length || _isAttribute != isAttribute)
132 return false;
133
134 char []entryBuf = _buf;
135
136 for (length--; length >= 0; length--) {
137 if (entryBuf[length] != buf[offset + length])
138 return false;
139 }
140
141 return true;
142 }
143
144 String getName()
145 {
146 if (_name == null)
147 _name = new String (_buf, 0, _buf.length);
148
149 return _name;
150 }
151
152 String getLocalName()
153 {
154 return _localName;
155 }
156
157 String getPrefix()
158 {
159 return _prefix;
160 }
161
162 String getUri()
163 {
164 return _namespace.getUri();
165 }
166
167 QName getQName()
168 {
169 if (_version != _namespace.getVersion())
170 fillQName();
171
172 return _qName;
173 }
174
175 boolean isXmlns()
176 {
177 return _isXmlns;
178 }
179
180 private void fillQName()
181 {
182 _version = _namespace.getVersion();
183
184 String prefix = _prefix;
185
186 if (prefix == null)
187 prefix = "";
188
189 _qName = new QName (_namespace.getUri(), _localName, prefix);
190 }
191 }
192 }
193 |
Popular Tags |
Java API By Example, From Geeks To Geeks.