| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * |
| * Copyright (c) 1999 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, |
| * if any, must include the following acknowledgment: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowledgment may appear in the software itself, |
| * if and wherever such third-party acknowledgments normally appear. |
| * |
| * 4. The names "Xalan" and "Apache Software Foundation" must |
| * not be used to endorse or promote products derived from this |
| * software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache", |
| * nor may "Apache" appear in their name, without prior written |
| * permission of the Apache Software Foundation. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation and was |
| * originally based on software copyright (c) 1999, Lotus |
| * Development Corporation., http://www.lotus.com. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| */ |
| package org.apache.xpath.compiler; |
| |
| import org.apache.xpath.Expression; |
| import org.apache.xpath.functions.Function; |
| |
| /** |
| * The function table for XPath. |
| */ |
| public class FunctionTable |
| { |
| |
| /** The 'current()' id. */ |
| public static final int FUNC_CURRENT = 0; |
| |
| /** The 'last()' id. */ |
| public static final int FUNC_LAST = 1; |
| |
| /** The 'position()' id. */ |
| public static final int FUNC_POSITION = 2; |
| |
| /** The 'count()' id. */ |
| public static final int FUNC_COUNT = 3; |
| |
| /** The 'id()' id. */ |
| public static final int FUNC_ID = 4; |
| |
| /** The 'key()' id (XSLT). */ |
| public static final int FUNC_KEY = 5; |
| |
| /** The 'local-name()' id. */ |
| public static final int FUNC_LOCAL_PART = 7; |
| |
| /** The 'namespace-uri()' id. */ |
| public static final int FUNC_NAMESPACE = 8; |
| |
| /** The 'name()' id. */ |
| public static final int FUNC_QNAME = 9; |
| |
| /** The 'generate-id()' id. */ |
| public static final int FUNC_GENERATE_ID = 10; |
| |
| /** The 'not()' id. */ |
| public static final int FUNC_NOT = 11; |
| |
| /** The 'true()' id. */ |
| public static final int FUNC_TRUE = 12; |
| |
| /** The 'false()' id. */ |
| public static final int FUNC_FALSE = 13; |
| |
| /** The 'boolean()' id. */ |
| public static final int FUNC_BOOLEAN = 14; |
| |
| /** The 'number()' id. */ |
| public static final int FUNC_NUMBER = 15; |
| |
| /** The 'floor()' id. */ |
| public static final int FUNC_FLOOR = 16; |
| |
| /** The 'ceiling()' id. */ |
| public static final int FUNC_CEILING = 17; |
| |
| /** The 'round()' id. */ |
| public static final int FUNC_ROUND = 18; |
| |
| /** The 'sum()' id. */ |
| public static final int FUNC_SUM = 19; |
| |
| /** The 'string()' id. */ |
| public static final int FUNC_STRING = 20; |
| |
| /** The 'starts-with()' id. */ |
| public static final int FUNC_STARTS_WITH = 21; |
| |
| /** The 'contains()' id. */ |
| public static final int FUNC_CONTAINS = 22; |
| |
| /** The 'substring-before()' id. */ |
| public static final int FUNC_SUBSTRING_BEFORE = 23; |
| |
| /** The 'substring-after()' id. */ |
| public static final int FUNC_SUBSTRING_AFTER = 24; |
| |
| /** The 'normalize-space()' id. */ |
| public static final int FUNC_NORMALIZE_SPACE = 25; |
| |
| /** The 'translate()' id. */ |
| public static final int FUNC_TRANSLATE = 26; |
| |
| /** The 'concat()' id. */ |
| public static final int FUNC_CONCAT = 27; |
| |
| /** The 'substring()' id. */ |
| public static final int FUNC_SUBSTRING = 29; |
| |
| /** The 'string-length()' id. */ |
| public static final int FUNC_STRING_LENGTH = 30; |
| |
| /** The 'system-property()' id. */ |
| public static final int FUNC_SYSTEM_PROPERTY = 31; |
| |
| /** The 'lang()' id. */ |
| public static final int FUNC_LANG = 32; |
| |
| /** The 'function-available()' id (XSLT). */ |
| public static final int FUNC_EXT_FUNCTION_AVAILABLE = 33; |
| |
| /** The 'element-available()' id (XSLT). */ |
| public static final int FUNC_EXT_ELEM_AVAILABLE = 34; |
| |
| /** The 'unparsed-entity-uri()' id (XSLT). */ |
| public static final int FUNC_UNPARSED_ENTITY_URI = 36; |
| |
| // Proprietary |
| |
| /** The 'document-location()' id (Proprietary). */ |
| public static final int FUNC_DOCLOCATION = 35; |
| |
| /** |
| * The function table. |
| */ |
| public static FuncLoader m_functions[]; |
| |
| /** |
| * Number of built in functions. Be sure to update this as |
| * built-in functions are added. |
| */ |
| private static final int NUM_BUILT_IN_FUNCS = 37; |
| |
| /** |
| * Number of built-in functions that may be added. |
| */ |
| private static final int NUM_ALLOWABLE_ADDINS = 30; |
| |
| /** |
| * The index to the next free function index. |
| */ |
| static int m_funcNextFreeIndex = NUM_BUILT_IN_FUNCS; |
| |
| static |
| { |
| m_functions = new FuncLoader[NUM_BUILT_IN_FUNCS + NUM_ALLOWABLE_ADDINS]; |
| m_functions[FUNC_CURRENT] = new FuncLoader("FuncCurrent", FUNC_CURRENT); |
| m_functions[FUNC_LAST] = new FuncLoader("FuncLast", FUNC_LAST); |
| m_functions[FUNC_POSITION] = new FuncLoader("FuncPosition", |
| FUNC_POSITION); |
| m_functions[FUNC_COUNT] = new FuncLoader("FuncCount", FUNC_COUNT); |
| m_functions[FUNC_ID] = new FuncLoader("FuncId", FUNC_ID); |
| m_functions[FUNC_KEY] = |
| new FuncLoader("org.apache.xalan.templates.FuncKey", FUNC_KEY); |
| |
| // m_functions[FUNC_DOC] = new FuncDoc(); |
| m_functions[FUNC_LOCAL_PART] = new FuncLoader("FuncLocalPart", |
| FUNC_LOCAL_PART); |
| m_functions[FUNC_NAMESPACE] = new FuncLoader("FuncNamespace", |
| FUNC_NAMESPACE); |
| m_functions[FUNC_QNAME] = new FuncLoader("FuncQname", FUNC_QNAME); |
| m_functions[FUNC_GENERATE_ID] = new FuncLoader("FuncGenerateId", |
| FUNC_GENERATE_ID); |
| m_functions[FUNC_NOT] = new FuncLoader("FuncNot", FUNC_NOT); |
| m_functions[FUNC_TRUE] = new FuncLoader("FuncTrue", FUNC_TRUE); |
| m_functions[FUNC_FALSE] = new FuncLoader("FuncFalse", FUNC_FALSE); |
| m_functions[FUNC_BOOLEAN] = new FuncLoader("FuncBoolean", FUNC_BOOLEAN); |
| m_functions[FUNC_LANG] = new FuncLoader("FuncLang", FUNC_LANG); |
| m_functions[FUNC_NUMBER] = new FuncLoader("FuncNumber", FUNC_NUMBER); |
| m_functions[FUNC_FLOOR] = new FuncLoader("FuncFloor", FUNC_FLOOR); |
| m_functions[FUNC_CEILING] = new FuncLoader("FuncCeiling", FUNC_CEILING); |
| m_functions[FUNC_ROUND] = new FuncLoader("FuncRound", FUNC_ROUND); |
| m_functions[FUNC_SUM] = new FuncLoader("FuncSum", FUNC_SUM); |
| m_functions[FUNC_STRING] = new FuncLoader("FuncString", FUNC_STRING); |
| m_functions[FUNC_STARTS_WITH] = new FuncLoader("FuncStartsWith", |
| FUNC_STARTS_WITH); |
| m_functions[FUNC_CONTAINS] = new FuncLoader("FuncContains", |
| FUNC_CONTAINS); |
| m_functions[FUNC_SUBSTRING_BEFORE] = new FuncLoader("FuncSubstringBefore", |
| FUNC_SUBSTRING_BEFORE); |
| m_functions[FUNC_SUBSTRING_AFTER] = new FuncLoader("FuncSubstringAfter", |
| FUNC_SUBSTRING_AFTER); |
| m_functions[FUNC_NORMALIZE_SPACE] = new FuncLoader("FuncNormalizeSpace", |
| FUNC_NORMALIZE_SPACE); |
| m_functions[FUNC_TRANSLATE] = new FuncLoader("FuncTranslate", |
| FUNC_TRANSLATE); |
| m_functions[FUNC_CONCAT] = new FuncLoader("FuncConcat", FUNC_CONCAT); |
| |
| //m_functions[FUNC_FORMAT_NUMBER] = new FuncFormatNumber(); |
| m_functions[FUNC_SYSTEM_PROPERTY] = new FuncLoader("FuncSystemProperty", |
| FUNC_SYSTEM_PROPERTY); |
| m_functions[FUNC_EXT_FUNCTION_AVAILABLE] = |
| new FuncLoader("FuncExtFunctionAvailable", FUNC_EXT_FUNCTION_AVAILABLE); |
| m_functions[FUNC_EXT_ELEM_AVAILABLE] = |
| new FuncLoader("FuncExtElementAvailable", FUNC_EXT_ELEM_AVAILABLE); |
| m_functions[FUNC_SUBSTRING] = new FuncLoader("FuncSubstring", |
| FUNC_SUBSTRING); |
| m_functions[FUNC_STRING_LENGTH] = new FuncLoader("FuncStringLength", |
| FUNC_STRING_LENGTH); |
| m_functions[FUNC_DOCLOCATION] = new FuncLoader("FuncDoclocation", |
| FUNC_DOCLOCATION); |
| m_functions[FUNC_UNPARSED_ENTITY_URI] = |
| new FuncLoader("FuncUnparsedEntityURI", FUNC_UNPARSED_ENTITY_URI); |
| } |
| |
| /** |
| * Obtain a new Function object from a function ID. |
| * |
| * @param which The function ID, which may correspond to one of the FUNC_XXX |
| * values found in {@link org.apache.xpath.compiler.FunctionTable}, but may |
| * be a value installed by an external module. |
| * |
| * @return a a new Function instance. |
| * |
| * @throws javax.xml.transform.TransformerException if ClassNotFoundException, |
| * IllegalAccessException, or InstantiationException is thrown. |
| */ |
| public static Function getFunction(int which) |
| throws javax.xml.transform.TransformerException |
| { |
| return m_functions[which].getFunction(); |
| } |
| |
| /** |
| * Install a built-in function. |
| * @param name The unqualified name of the function. |
| * @param func A Implementation of an XPath Function object. |
| * @return the position of the function in the internal index. |
| */ |
| public static int installFunction(String name, Expression func) |
| { |
| |
| int funcIndex; |
| Object funcIndexObj = Keywords.m_functions.get(name); |
| |
| if (null != funcIndexObj) |
| { |
| funcIndex = ((Integer) funcIndexObj).intValue(); |
| } |
| else |
| { |
| funcIndex = m_funcNextFreeIndex; |
| |
| m_funcNextFreeIndex++; |
| |
| Keywords.m_functions.put(name, new Integer(funcIndex)); |
| } |
| |
| FuncLoader loader = new FuncLoader(func.getClass().getName(), funcIndex); |
| |
| m_functions[funcIndex] = loader; |
| |
| return funcIndex; |
| } |
| |
| /** |
| * Install a function loader at a specific index. |
| * @param func A Implementation of an XPath Function object. |
| * @param which The function ID, which may correspond to one of the FUNC_XXX |
| * values found in {@link org.apache.xpath.compiler.FunctionTable}, but may |
| * be a value installed by an external module. |
| * @return the position of the function in the internal index. |
| */ |
| public static void installFunction(Expression func, int funcIndex) |
| { |
| |
| FuncLoader loader = new FuncLoader(func.getClass().getName(), funcIndex); |
| |
| m_functions[funcIndex] = loader; |
| } |
| } |