19f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson/* 29f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * Licensed to the Apache Software Foundation (ASF) under one 39f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * or more contributor license agreements. See the NOTICE file 49f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * distributed with this work for additional information 59f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * regarding copyright ownership. The ASF licenses this file 69f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * to you under the Apache License, Version 2.0 (the "License"); 79f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * you may not use this file except in compliance with the License. 89f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * You may obtain a copy of the License at 99f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 109f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * http://www.apache.org/licenses/LICENSE-2.0 119f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 129f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * Unless required by applicable law or agreed to in writing, software 139f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * distributed under the License is distributed on an "AS IS" BASIS, 149f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 159f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * See the License for the specific language governing permissions and 169f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * limitations under the License. 179f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 189f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson/* 199f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * $Id: XRTreeFragSelectWrapper.java 468655 2006-10-28 07:12:06Z minchau $ 209f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 219f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilsonpackage org.apache.xpath.objects; 229f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 239f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilsonimport org.apache.xalan.res.XSLMessages; 249f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilsonimport org.apache.xml.dtm.DTMIterator; 259f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilsonimport org.apache.xml.utils.XMLString; 269f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilsonimport org.apache.xpath.Expression; 279f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilsonimport org.apache.xpath.XPathContext; 289f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilsonimport org.apache.xpath.res.XPATHErrorResources; 299f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 309f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson/** 319f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * This class makes an select statement act like an result tree fragment. 329f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 339f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilsonpublic class XRTreeFragSelectWrapper extends XRTreeFrag implements Cloneable 349f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson{ 359f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson static final long serialVersionUID = -6526177905590461251L; 369f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson public XRTreeFragSelectWrapper(Expression expr) 379f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 389f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson super(expr); 399f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 409f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 419f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson /** 429f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * This function is used to fixup variables from QNames to stack frame 439f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * indexes at stylesheet build time. 449f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @param vars List of QNames that correspond to variables. This list 459f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * should be searched backwards for the first qualified name that 469f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * corresponds to the variable reference qname. The position of the 479f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * QName in the vector from the start of the vector will be its position 489f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * in the stack frame (but variables above the globalsTop value will need 499f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * to be offset to the current stack frame). 509f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 519f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson public void fixupVariables(java.util.Vector vars, int globalsSize) 529f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 539f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson ((Expression)m_obj).fixupVariables(vars, globalsSize); 549f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 559f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 569f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson /** 579f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * For support of literal objects in xpaths. 589f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 599f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @param xctxt The XPath execution context. 609f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 619f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @return the result of executing the select expression 629f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 639f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @throws javax.xml.transform.TransformerException 649f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 659f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson public XObject execute(XPathContext xctxt) 669f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson throws javax.xml.transform.TransformerException 679f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 689f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson XObject m_selected; 699f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson m_selected = ((Expression)m_obj).execute(xctxt); 709f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson m_selected.allowDetachToRelease(m_allowRelease); 719f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson if (m_selected.getType() == CLASS_STRING) 729f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson return m_selected; 739f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson else 749f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson return new XString(m_selected.str()); 759f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 769f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 779f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson /** 789f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * Detaches the <code>DTMIterator</code> from the set which it iterated 799f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * over, releasing any computational resources and placing the iterator 809f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * in the INVALID state. After <code>detach</code> has been invoked, 819f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * calls to <code>nextNode</code> or <code>previousNode</code> will 829f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * raise a runtime exception. 839f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 849f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * In general, detach should only be called once on the object. 859f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 869f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson public void detach() 879f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 889f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson throw new RuntimeException(XSLMessages.createXPATHMessage(XPATHErrorResources.ER_DETACH_NOT_SUPPORTED_XRTREEFRAGSELECTWRAPPER, null)); //"detach() not supported by XRTreeFragSelectWrapper!"); 899f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 909f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 919f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson /** 929f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * Cast result object to a number. 939f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 949f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @return The result tree fragment as a number or NaN 959f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 969f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson public double num() 979f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson throws javax.xml.transform.TransformerException 989f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 999f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 1009f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson throw new RuntimeException(XSLMessages.createXPATHMessage(XPATHErrorResources.ER_NUM_NOT_SUPPORTED_XRTREEFRAGSELECTWRAPPER, null)); //"num() not supported by XRTreeFragSelectWrapper!"); 1019f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 1029f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 1039f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 1049f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson /** 1059f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * Cast result object to an XMLString. 1069f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 1079f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @return The document fragment node data or the empty string. 1089f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 1099f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson public XMLString xstr() 1109f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 1119f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson throw new RuntimeException(XSLMessages.createXPATHMessage(XPATHErrorResources.ER_XSTR_NOT_SUPPORTED_XRTREEFRAGSELECTWRAPPER, null)); //"xstr() not supported by XRTreeFragSelectWrapper!"); 1129f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 1139f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 1149f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson /** 1159f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * Cast result object to a string. 1169f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 1179f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @return The document fragment node data or the empty string. 1189f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 1199f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson public String str() 1209f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 1219f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson throw new RuntimeException(XSLMessages.createXPATHMessage(XPATHErrorResources.ER_STR_NOT_SUPPORTED_XRTREEFRAGSELECTWRAPPER, null)); //"str() not supported by XRTreeFragSelectWrapper!"); 1229f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 1239f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 1249f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson /** 1259f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * Tell what kind of class this is. 1269f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 1279f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @return the string type 1289f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 1299f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson public int getType() 1309f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 1319f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson return CLASS_STRING; 1329f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 1339f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 1349f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson /** 1359f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * Cast result object to a result tree fragment. 1369f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 1379f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @return The document fragment this wraps 1389f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 1399f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson public int rtf() 1409f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 1419f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson throw new RuntimeException(XSLMessages.createXPATHMessage(XPATHErrorResources.ER_RTF_NOT_SUPPORTED_XRTREEFRAGSELECTWRAPPER, null)); //"rtf() not supported by XRTreeFragSelectWrapper!"); 1429f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 1439f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 1449f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson /** 1459f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * Cast result object to a DTMIterator. 1469f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 1479f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @return The document fragment as a DTMIterator 1489f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 1499f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson public DTMIterator asNodeIterator() 1509f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 1519f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson throw new RuntimeException(XSLMessages.createXPATHMessage(XPATHErrorResources.ER_RTF_NOT_SUPPORTED_XRTREEFRAGSELECTWRAPPER, null)); //"asNodeIterator() not supported by XRTreeFragSelectWrapper!"); 1529f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 1539f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 1549f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson} 155