author | dfuchs |
Tue, 30 Jun 2015 12:04:27 +0200 | |
changeset 31497 | 4a6b2e733c0d |
parent 31204 | 9afdbf18ad38 |
child 36520 | cb52aa47ff0a |
permissions | -rw-r--r-- |
6 | 1 |
/* |
31204
9afdbf18ad38
8087283: Add support for the XML Signature here() function to the JDK XPath implementation
mullan
parents:
25868
diff
changeset
|
2 |
* Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. |
6 | 3 |
*/ |
31204
9afdbf18ad38
8087283: Add support for the XML Signature here() function to the JDK XPath implementation
mullan
parents:
25868
diff
changeset
|
4 |
/** |
9afdbf18ad38
8087283: Add support for the XML Signature here() function to the JDK XPath implementation
mullan
parents:
25868
diff
changeset
|
5 |
* Licensed to the Apache Software Foundation (ASF) under one |
9afdbf18ad38
8087283: Add support for the XML Signature here() function to the JDK XPath implementation
mullan
parents:
25868
diff
changeset
|
6 |
* or more contributor license agreements. See the NOTICE file |
9afdbf18ad38
8087283: Add support for the XML Signature here() function to the JDK XPath implementation
mullan
parents:
25868
diff
changeset
|
7 |
* distributed with this work for additional information |
9afdbf18ad38
8087283: Add support for the XML Signature here() function to the JDK XPath implementation
mullan
parents:
25868
diff
changeset
|
8 |
* regarding copyright ownership. The ASF licenses this file |
9afdbf18ad38
8087283: Add support for the XML Signature here() function to the JDK XPath implementation
mullan
parents:
25868
diff
changeset
|
9 |
* to you under the Apache License, Version 2.0 (the |
9afdbf18ad38
8087283: Add support for the XML Signature here() function to the JDK XPath implementation
mullan
parents:
25868
diff
changeset
|
10 |
* "License"); you may not use this file except in compliance |
9afdbf18ad38
8087283: Add support for the XML Signature here() function to the JDK XPath implementation
mullan
parents:
25868
diff
changeset
|
11 |
* with the License. You may obtain a copy of the License at |
6 | 12 |
* |
31204
9afdbf18ad38
8087283: Add support for the XML Signature here() function to the JDK XPath implementation
mullan
parents:
25868
diff
changeset
|
13 |
* http://www.apache.org/licenses/LICENSE-2.0 |
6 | 14 |
* |
31204
9afdbf18ad38
8087283: Add support for the XML Signature here() function to the JDK XPath implementation
mullan
parents:
25868
diff
changeset
|
15 |
* Unless required by applicable law or agreed to in writing, |
9afdbf18ad38
8087283: Add support for the XML Signature here() function to the JDK XPath implementation
mullan
parents:
25868
diff
changeset
|
16 |
* software distributed under the License is distributed on an |
9afdbf18ad38
8087283: Add support for the XML Signature here() function to the JDK XPath implementation
mullan
parents:
25868
diff
changeset
|
17 |
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
9afdbf18ad38
8087283: Add support for the XML Signature here() function to the JDK XPath implementation
mullan
parents:
25868
diff
changeset
|
18 |
* KIND, either express or implied. See the License for the |
9afdbf18ad38
8087283: Add support for the XML Signature here() function to the JDK XPath implementation
mullan
parents:
25868
diff
changeset
|
19 |
* specific language governing permissions and limitations |
9afdbf18ad38
8087283: Add support for the XML Signature here() function to the JDK XPath implementation
mullan
parents:
25868
diff
changeset
|
20 |
* under the License. |
6 | 21 |
*/ |
22 |
/* |
|
23 |
* $Id: FunctionTable.java,v 1.3 2005/09/28 13:49:34 pvedula Exp $ |
|
24 |
*/ |
|
25 |
package com.sun.org.apache.xpath.internal.compiler; |
|
26 |
||
27 |
import com.sun.org.apache.xpath.internal.Expression; |
|
28 |
import com.sun.org.apache.xpath.internal.functions.Function; |
|
29 |
import java.util.HashMap; |
|
30 |
import javax.xml.transform.TransformerException; |
|
31 |
||
32 |
/** |
|
33 |
* The function table for XPath. |
|
34 |
*/ |
|
35 |
public class FunctionTable |
|
36 |
{ |
|
37 |
||
38 |
/** The 'current()' id. */ |
|
39 |
public static final int FUNC_CURRENT = 0; |
|
40 |
||
41 |
/** The 'last()' id. */ |
|
42 |
public static final int FUNC_LAST = 1; |
|
43 |
||
44 |
/** The 'position()' id. */ |
|
45 |
public static final int FUNC_POSITION = 2; |
|
46 |
||
47 |
/** The 'count()' id. */ |
|
48 |
public static final int FUNC_COUNT = 3; |
|
49 |
||
50 |
/** The 'id()' id. */ |
|
51 |
public static final int FUNC_ID = 4; |
|
52 |
||
53 |
/** The 'key()' id (XSLT). */ |
|
54 |
public static final int FUNC_KEY = 5; |
|
55 |
||
56 |
/** The 'local-name()' id. */ |
|
57 |
public static final int FUNC_LOCAL_PART = 7; |
|
58 |
||
59 |
/** The 'namespace-uri()' id. */ |
|
60 |
public static final int FUNC_NAMESPACE = 8; |
|
61 |
||
62 |
/** The 'name()' id. */ |
|
63 |
public static final int FUNC_QNAME = 9; |
|
64 |
||
65 |
/** The 'generate-id()' id. */ |
|
66 |
public static final int FUNC_GENERATE_ID = 10; |
|
67 |
||
68 |
/** The 'not()' id. */ |
|
69 |
public static final int FUNC_NOT = 11; |
|
70 |
||
71 |
/** The 'true()' id. */ |
|
72 |
public static final int FUNC_TRUE = 12; |
|
73 |
||
74 |
/** The 'false()' id. */ |
|
75 |
public static final int FUNC_FALSE = 13; |
|
76 |
||
77 |
/** The 'boolean()' id. */ |
|
78 |
public static final int FUNC_BOOLEAN = 14; |
|
79 |
||
80 |
/** The 'number()' id. */ |
|
81 |
public static final int FUNC_NUMBER = 15; |
|
82 |
||
83 |
/** The 'floor()' id. */ |
|
84 |
public static final int FUNC_FLOOR = 16; |
|
85 |
||
86 |
/** The 'ceiling()' id. */ |
|
87 |
public static final int FUNC_CEILING = 17; |
|
88 |
||
89 |
/** The 'round()' id. */ |
|
90 |
public static final int FUNC_ROUND = 18; |
|
91 |
||
92 |
/** The 'sum()' id. */ |
|
93 |
public static final int FUNC_SUM = 19; |
|
94 |
||
95 |
/** The 'string()' id. */ |
|
96 |
public static final int FUNC_STRING = 20; |
|
97 |
||
98 |
/** The 'starts-with()' id. */ |
|
99 |
public static final int FUNC_STARTS_WITH = 21; |
|
100 |
||
101 |
/** The 'contains()' id. */ |
|
102 |
public static final int FUNC_CONTAINS = 22; |
|
103 |
||
104 |
/** The 'substring-before()' id. */ |
|
105 |
public static final int FUNC_SUBSTRING_BEFORE = 23; |
|
106 |
||
107 |
/** The 'substring-after()' id. */ |
|
108 |
public static final int FUNC_SUBSTRING_AFTER = 24; |
|
109 |
||
110 |
/** The 'normalize-space()' id. */ |
|
111 |
public static final int FUNC_NORMALIZE_SPACE = 25; |
|
112 |
||
113 |
/** The 'translate()' id. */ |
|
114 |
public static final int FUNC_TRANSLATE = 26; |
|
115 |
||
116 |
/** The 'concat()' id. */ |
|
117 |
public static final int FUNC_CONCAT = 27; |
|
118 |
||
119 |
/** The 'substring()' id. */ |
|
120 |
public static final int FUNC_SUBSTRING = 29; |
|
121 |
||
122 |
/** The 'string-length()' id. */ |
|
123 |
public static final int FUNC_STRING_LENGTH = 30; |
|
124 |
||
125 |
/** The 'system-property()' id. */ |
|
126 |
public static final int FUNC_SYSTEM_PROPERTY = 31; |
|
127 |
||
128 |
/** The 'lang()' id. */ |
|
129 |
public static final int FUNC_LANG = 32; |
|
130 |
||
131 |
/** The 'function-available()' id (XSLT). */ |
|
132 |
public static final int FUNC_EXT_FUNCTION_AVAILABLE = 33; |
|
133 |
||
134 |
/** The 'element-available()' id (XSLT). */ |
|
135 |
public static final int FUNC_EXT_ELEM_AVAILABLE = 34; |
|
136 |
||
137 |
/** The 'unparsed-entity-uri()' id (XSLT). */ |
|
138 |
public static final int FUNC_UNPARSED_ENTITY_URI = 36; |
|
139 |
||
31204
9afdbf18ad38
8087283: Add support for the XML Signature here() function to the JDK XPath implementation
mullan
parents:
25868
diff
changeset
|
140 |
/** The 'here()' id (XML Signature). */ |
9afdbf18ad38
8087283: Add support for the XML Signature here() function to the JDK XPath implementation
mullan
parents:
25868
diff
changeset
|
141 |
public static final int FUNC_HERE = 37; |
9afdbf18ad38
8087283: Add support for the XML Signature here() function to the JDK XPath implementation
mullan
parents:
25868
diff
changeset
|
142 |
|
6 | 143 |
// Proprietary |
144 |
||
145 |
/** The 'document-location()' id (Proprietary). */ |
|
146 |
public static final int FUNC_DOCLOCATION = 35; |
|
147 |
||
148 |
/** |
|
149 |
* The function table. |
|
150 |
*/ |
|
151 |
private static Class m_functions[]; |
|
152 |
||
153 |
/** Table of function name to function ID associations. */ |
|
154 |
private static HashMap m_functionID = new HashMap(); |
|
155 |
||
156 |
/** |
|
157 |
* The function table contains customized functions |
|
158 |
*/ |
|
159 |
private Class m_functions_customer[] = new Class[NUM_ALLOWABLE_ADDINS]; |
|
160 |
||
161 |
/** |
|
162 |
* Table of function name to function ID associations for customized functions |
|
163 |
*/ |
|
164 |
private HashMap m_functionID_customer = new HashMap(); |
|
165 |
||
166 |
/** |
|
167 |
* Number of built in functions. Be sure to update this as |
|
168 |
* built-in functions are added. |
|
169 |
*/ |
|
31204
9afdbf18ad38
8087283: Add support for the XML Signature here() function to the JDK XPath implementation
mullan
parents:
25868
diff
changeset
|
170 |
private static final int NUM_BUILT_IN_FUNCS = 38; |
6 | 171 |
|
172 |
/** |
|
173 |
* Number of built-in functions that may be added. |
|
174 |
*/ |
|
175 |
private static final int NUM_ALLOWABLE_ADDINS = 30; |
|
176 |
||
177 |
/** |
|
178 |
* The index to the next free function index. |
|
179 |
*/ |
|
180 |
private int m_funcNextFreeIndex = NUM_BUILT_IN_FUNCS; |
|
181 |
||
182 |
static |
|
183 |
{ |
|
184 |
m_functions = new Class[NUM_BUILT_IN_FUNCS]; |
|
185 |
m_functions[FUNC_CURRENT] = com.sun.org.apache.xpath.internal.functions.FuncCurrent.class; |
|
186 |
m_functions[FUNC_LAST] = com.sun.org.apache.xpath.internal.functions.FuncLast.class; |
|
187 |
m_functions[FUNC_POSITION] = com.sun.org.apache.xpath.internal.functions.FuncPosition.class; |
|
188 |
m_functions[FUNC_COUNT] = com.sun.org.apache.xpath.internal.functions.FuncCount.class; |
|
189 |
m_functions[FUNC_ID] = com.sun.org.apache.xpath.internal.functions.FuncId.class; |
|
190 |
// J2SE does not support Xalan interpretive |
|
191 |
// m_functions[FUNC_KEY] = |
|
192 |
// com.sun.org.apache.xalan.internal.templates.FuncKey.class; |
|
193 |
m_functions[FUNC_LOCAL_PART] = |
|
194 |
com.sun.org.apache.xpath.internal.functions.FuncLocalPart.class; |
|
195 |
m_functions[FUNC_NAMESPACE] = |
|
196 |
com.sun.org.apache.xpath.internal.functions.FuncNamespace.class; |
|
197 |
m_functions[FUNC_QNAME] = com.sun.org.apache.xpath.internal.functions.FuncQname.class; |
|
198 |
m_functions[FUNC_GENERATE_ID] = |
|
199 |
com.sun.org.apache.xpath.internal.functions.FuncGenerateId.class; |
|
200 |
m_functions[FUNC_NOT] = com.sun.org.apache.xpath.internal.functions.FuncNot.class; |
|
201 |
m_functions[FUNC_TRUE] = com.sun.org.apache.xpath.internal.functions.FuncTrue.class; |
|
202 |
m_functions[FUNC_FALSE] = com.sun.org.apache.xpath.internal.functions.FuncFalse.class; |
|
203 |
m_functions[FUNC_BOOLEAN] = com.sun.org.apache.xpath.internal.functions.FuncBoolean.class; |
|
204 |
m_functions[FUNC_LANG] = com.sun.org.apache.xpath.internal.functions.FuncLang.class; |
|
205 |
m_functions[FUNC_NUMBER] = com.sun.org.apache.xpath.internal.functions.FuncNumber.class; |
|
206 |
m_functions[FUNC_FLOOR] = com.sun.org.apache.xpath.internal.functions.FuncFloor.class; |
|
207 |
m_functions[FUNC_CEILING] = com.sun.org.apache.xpath.internal.functions.FuncCeiling.class; |
|
208 |
m_functions[FUNC_ROUND] = com.sun.org.apache.xpath.internal.functions.FuncRound.class; |
|
209 |
m_functions[FUNC_SUM] = com.sun.org.apache.xpath.internal.functions.FuncSum.class; |
|
210 |
m_functions[FUNC_STRING] = com.sun.org.apache.xpath.internal.functions.FuncString.class; |
|
211 |
m_functions[FUNC_STARTS_WITH] = |
|
212 |
com.sun.org.apache.xpath.internal.functions.FuncStartsWith.class; |
|
213 |
m_functions[FUNC_CONTAINS] = com.sun.org.apache.xpath.internal.functions.FuncContains.class; |
|
214 |
m_functions[FUNC_SUBSTRING_BEFORE] = |
|
215 |
com.sun.org.apache.xpath.internal.functions.FuncSubstringBefore.class; |
|
216 |
m_functions[FUNC_SUBSTRING_AFTER] = |
|
217 |
com.sun.org.apache.xpath.internal.functions.FuncSubstringAfter.class; |
|
218 |
m_functions[FUNC_NORMALIZE_SPACE] = |
|
219 |
com.sun.org.apache.xpath.internal.functions.FuncNormalizeSpace.class; |
|
220 |
m_functions[FUNC_TRANSLATE] = |
|
221 |
com.sun.org.apache.xpath.internal.functions.FuncTranslate.class; |
|
222 |
m_functions[FUNC_CONCAT] = com.sun.org.apache.xpath.internal.functions.FuncConcat.class; |
|
223 |
m_functions[FUNC_SYSTEM_PROPERTY] = |
|
224 |
com.sun.org.apache.xpath.internal.functions.FuncSystemProperty.class; |
|
225 |
m_functions[FUNC_EXT_FUNCTION_AVAILABLE] = |
|
226 |
com.sun.org.apache.xpath.internal.functions.FuncExtFunctionAvailable.class; |
|
227 |
m_functions[FUNC_EXT_ELEM_AVAILABLE] = |
|
228 |
com.sun.org.apache.xpath.internal.functions.FuncExtElementAvailable.class; |
|
229 |
m_functions[FUNC_SUBSTRING] = |
|
230 |
com.sun.org.apache.xpath.internal.functions.FuncSubstring.class; |
|
231 |
m_functions[FUNC_STRING_LENGTH] = |
|
232 |
com.sun.org.apache.xpath.internal.functions.FuncStringLength.class; |
|
233 |
m_functions[FUNC_DOCLOCATION] = |
|
234 |
com.sun.org.apache.xpath.internal.functions.FuncDoclocation.class; |
|
235 |
m_functions[FUNC_UNPARSED_ENTITY_URI] = |
|
236 |
com.sun.org.apache.xpath.internal.functions.FuncUnparsedEntityURI.class; |
|
31204
9afdbf18ad38
8087283: Add support for the XML Signature here() function to the JDK XPath implementation
mullan
parents:
25868
diff
changeset
|
237 |
m_functions[FUNC_HERE] = |
9afdbf18ad38
8087283: Add support for the XML Signature here() function to the JDK XPath implementation
mullan
parents:
25868
diff
changeset
|
238 |
com.sun.org.apache.xpath.internal.functions.FuncHere.class; |
6 | 239 |
} |
240 |
||
241 |
static{ |
|
242 |
m_functionID.put(Keywords.FUNC_CURRENT_STRING, |
|
243 |
new Integer(FunctionTable.FUNC_CURRENT)); |
|
244 |
m_functionID.put(Keywords.FUNC_LAST_STRING, |
|
245 |
new Integer(FunctionTable.FUNC_LAST)); |
|
246 |
m_functionID.put(Keywords.FUNC_POSITION_STRING, |
|
247 |
new Integer(FunctionTable.FUNC_POSITION)); |
|
248 |
m_functionID.put(Keywords.FUNC_COUNT_STRING, |
|
249 |
new Integer(FunctionTable.FUNC_COUNT)); |
|
250 |
m_functionID.put(Keywords.FUNC_ID_STRING, |
|
251 |
new Integer(FunctionTable.FUNC_ID)); |
|
252 |
m_functionID.put(Keywords.FUNC_KEY_STRING, |
|
253 |
new Integer(FunctionTable.FUNC_KEY)); |
|
254 |
m_functionID.put(Keywords.FUNC_LOCAL_PART_STRING, |
|
255 |
new Integer(FunctionTable.FUNC_LOCAL_PART)); |
|
256 |
m_functionID.put(Keywords.FUNC_NAMESPACE_STRING, |
|
257 |
new Integer(FunctionTable.FUNC_NAMESPACE)); |
|
258 |
m_functionID.put(Keywords.FUNC_NAME_STRING, |
|
259 |
new Integer(FunctionTable.FUNC_QNAME)); |
|
260 |
m_functionID.put(Keywords.FUNC_GENERATE_ID_STRING, |
|
261 |
new Integer(FunctionTable.FUNC_GENERATE_ID)); |
|
262 |
m_functionID.put(Keywords.FUNC_NOT_STRING, |
|
263 |
new Integer(FunctionTable.FUNC_NOT)); |
|
264 |
m_functionID.put(Keywords.FUNC_TRUE_STRING, |
|
265 |
new Integer(FunctionTable.FUNC_TRUE)); |
|
266 |
m_functionID.put(Keywords.FUNC_FALSE_STRING, |
|
267 |
new Integer(FunctionTable.FUNC_FALSE)); |
|
268 |
m_functionID.put(Keywords.FUNC_BOOLEAN_STRING, |
|
269 |
new Integer(FunctionTable.FUNC_BOOLEAN)); |
|
270 |
m_functionID.put(Keywords.FUNC_LANG_STRING, |
|
271 |
new Integer(FunctionTable.FUNC_LANG)); |
|
272 |
m_functionID.put(Keywords.FUNC_NUMBER_STRING, |
|
273 |
new Integer(FunctionTable.FUNC_NUMBER)); |
|
274 |
m_functionID.put(Keywords.FUNC_FLOOR_STRING, |
|
275 |
new Integer(FunctionTable.FUNC_FLOOR)); |
|
276 |
m_functionID.put(Keywords.FUNC_CEILING_STRING, |
|
277 |
new Integer(FunctionTable.FUNC_CEILING)); |
|
278 |
m_functionID.put(Keywords.FUNC_ROUND_STRING, |
|
279 |
new Integer(FunctionTable.FUNC_ROUND)); |
|
280 |
m_functionID.put(Keywords.FUNC_SUM_STRING, |
|
281 |
new Integer(FunctionTable.FUNC_SUM)); |
|
282 |
m_functionID.put(Keywords.FUNC_STRING_STRING, |
|
283 |
new Integer(FunctionTable.FUNC_STRING)); |
|
284 |
m_functionID.put(Keywords.FUNC_STARTS_WITH_STRING, |
|
285 |
new Integer(FunctionTable.FUNC_STARTS_WITH)); |
|
286 |
m_functionID.put(Keywords.FUNC_CONTAINS_STRING, |
|
287 |
new Integer(FunctionTable.FUNC_CONTAINS)); |
|
288 |
m_functionID.put(Keywords.FUNC_SUBSTRING_BEFORE_STRING, |
|
289 |
new Integer(FunctionTable.FUNC_SUBSTRING_BEFORE)); |
|
290 |
m_functionID.put(Keywords.FUNC_SUBSTRING_AFTER_STRING, |
|
291 |
new Integer(FunctionTable.FUNC_SUBSTRING_AFTER)); |
|
292 |
m_functionID.put(Keywords.FUNC_NORMALIZE_SPACE_STRING, |
|
293 |
new Integer(FunctionTable.FUNC_NORMALIZE_SPACE)); |
|
294 |
m_functionID.put(Keywords.FUNC_TRANSLATE_STRING, |
|
295 |
new Integer(FunctionTable.FUNC_TRANSLATE)); |
|
296 |
m_functionID.put(Keywords.FUNC_CONCAT_STRING, |
|
297 |
new Integer(FunctionTable.FUNC_CONCAT)); |
|
298 |
m_functionID.put(Keywords.FUNC_SYSTEM_PROPERTY_STRING, |
|
299 |
new Integer(FunctionTable.FUNC_SYSTEM_PROPERTY)); |
|
300 |
m_functionID.put(Keywords.FUNC_EXT_FUNCTION_AVAILABLE_STRING, |
|
301 |
new Integer(FunctionTable.FUNC_EXT_FUNCTION_AVAILABLE)); |
|
302 |
m_functionID.put(Keywords.FUNC_EXT_ELEM_AVAILABLE_STRING, |
|
303 |
new Integer(FunctionTable.FUNC_EXT_ELEM_AVAILABLE)); |
|
304 |
m_functionID.put(Keywords.FUNC_SUBSTRING_STRING, |
|
305 |
new Integer(FunctionTable.FUNC_SUBSTRING)); |
|
306 |
m_functionID.put(Keywords.FUNC_STRING_LENGTH_STRING, |
|
307 |
new Integer(FunctionTable.FUNC_STRING_LENGTH)); |
|
308 |
m_functionID.put(Keywords.FUNC_UNPARSED_ENTITY_URI_STRING, |
|
309 |
new Integer(FunctionTable.FUNC_UNPARSED_ENTITY_URI)); |
|
310 |
m_functionID.put(Keywords.FUNC_DOCLOCATION_STRING, |
|
311 |
new Integer(FunctionTable.FUNC_DOCLOCATION)); |
|
31204
9afdbf18ad38
8087283: Add support for the XML Signature here() function to the JDK XPath implementation
mullan
parents:
25868
diff
changeset
|
312 |
m_functionID.put(Keywords.FUNC_HERE_STRING, |
9afdbf18ad38
8087283: Add support for the XML Signature here() function to the JDK XPath implementation
mullan
parents:
25868
diff
changeset
|
313 |
new Integer(FunctionTable.FUNC_HERE)); |
6 | 314 |
} |
315 |
||
316 |
public FunctionTable(){ |
|
317 |
} |
|
318 |
||
319 |
/** |
|
320 |
* Return the name of the a function in the static table. Needed to avoid |
|
321 |
* making the table publicly available. |
|
322 |
*/ |
|
323 |
String getFunctionName(int funcID) { |
|
324 |
if (funcID < NUM_BUILT_IN_FUNCS) return m_functions[funcID].getName(); |
|
325 |
else return m_functions_customer[funcID - NUM_BUILT_IN_FUNCS].getName(); |
|
326 |
} |
|
327 |
||
328 |
/** |
|
329 |
* Obtain a new Function object from a function ID. |
|
330 |
* |
|
331 |
* @param which The function ID, which may correspond to one of the FUNC_XXX |
|
332 |
* values found in {@link com.sun.org.apache.xpath.internal.compiler.FunctionTable}, but may |
|
333 |
* be a value installed by an external module. |
|
334 |
* |
|
335 |
* @return a a new Function instance. |
|
336 |
* |
|
337 |
* @throws javax.xml.transform.TransformerException if ClassNotFoundException, |
|
338 |
* IllegalAccessException, or InstantiationException is thrown. |
|
339 |
*/ |
|
340 |
Function getFunction(int which) |
|
341 |
throws javax.xml.transform.TransformerException |
|
342 |
{ |
|
343 |
try{ |
|
344 |
if (which < NUM_BUILT_IN_FUNCS) |
|
345 |
return (Function) m_functions[which].newInstance(); |
|
346 |
else |
|
347 |
return (Function) m_functions_customer[ |
|
348 |
which-NUM_BUILT_IN_FUNCS].newInstance(); |
|
349 |
}catch (IllegalAccessException ex){ |
|
350 |
throw new TransformerException(ex.getMessage()); |
|
351 |
}catch (InstantiationException ex){ |
|
352 |
throw new TransformerException(ex.getMessage()); |
|
353 |
} |
|
354 |
} |
|
355 |
||
356 |
/** |
|
357 |
* Obtain a function ID from a given function name |
|
358 |
* @param key the function name in a java.lang.String format. |
|
359 |
* @return a function ID, which may correspond to one of the FUNC_XXX values |
|
360 |
* found in {@link com.sun.org.apache.xpath.internal.compiler.FunctionTable}, but may be a |
|
361 |
* value installed by an external module. |
|
362 |
*/ |
|
363 |
Object getFunctionID(String key){ |
|
364 |
Object id = m_functionID_customer.get(key); |
|
365 |
if (null == id) id = m_functionID.get(key); |
|
366 |
return id; |
|
367 |
} |
|
368 |
||
369 |
/** |
|
370 |
* Install a built-in function. |
|
371 |
* @param name The unqualified name of the function, must not be null |
|
372 |
* @param func A Implementation of an XPath Function object. |
|
373 |
* @return the position of the function in the internal index. |
|
374 |
*/ |
|
375 |
public int installFunction(String name, Class func) |
|
376 |
{ |
|
377 |
||
378 |
int funcIndex; |
|
379 |
Object funcIndexObj = getFunctionID(name); |
|
380 |
||
31497 | 381 |
if (func != null && !Function.class.isAssignableFrom(func)) { |
382 |
throw new ClassCastException(func.getName() |
|
383 |
+ " cannot be cast to " |
|
384 |
+ Function.class.getName()); |
|
385 |
} |
|
386 |
||
6 | 387 |
if (null != funcIndexObj) |
388 |
{ |
|
389 |
funcIndex = ((Integer) funcIndexObj).intValue(); |
|
390 |
||
391 |
if (funcIndex < NUM_BUILT_IN_FUNCS){ |
|
392 |
funcIndex = m_funcNextFreeIndex++; |
|
393 |
m_functionID_customer.put(name, new Integer(funcIndex)); |
|
394 |
} |
|
395 |
m_functions_customer[funcIndex - NUM_BUILT_IN_FUNCS] = func; |
|
396 |
} |
|
397 |
else |
|
398 |
{ |
|
399 |
funcIndex = m_funcNextFreeIndex++; |
|
400 |
||
401 |
m_functions_customer[funcIndex-NUM_BUILT_IN_FUNCS] = func; |
|
402 |
||
403 |
m_functionID_customer.put(name, |
|
404 |
new Integer(funcIndex)); |
|
405 |
} |
|
406 |
return funcIndex; |
|
407 |
} |
|
408 |
||
409 |
/** |
|
410 |
* Tell if a built-in, non-namespaced function is available. |
|
411 |
* |
|
412 |
* @param methName The local name of the function. |
|
413 |
* |
|
414 |
* @return True if the function can be executed. |
|
415 |
*/ |
|
416 |
public boolean functionAvailable(String methName) |
|
417 |
{ |
|
418 |
Object tblEntry = m_functionID.get(methName); |
|
419 |
if (null != tblEntry) return true; |
|
420 |
else{ |
|
421 |
tblEntry = m_functionID_customer.get(methName); |
|
422 |
return (null != tblEntry)? true : false; |
|
423 |
} |
|
424 |
} |
|
425 |
} |