14c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson/* 24c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * Licensed to the Apache Software Foundation (ASF) under one 34c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * or more contributor license agreements. See the NOTICE file 44c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * distributed with this work for additional information 54c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * regarding copyright ownership. The ASF licenses this file 64c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * to you under the Apache License, Version 2.0 (the "License"); 74c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * you may not use this file except in compliance with the License. 84c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * You may obtain a copy of the License at 94c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * 104c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * http://www.apache.org/licenses/LICENSE-2.0 114c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * 124c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * Unless required by applicable law or agreed to in writing, software 134c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * distributed under the License is distributed on an "AS IS" BASIS, 144c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 154c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * See the License for the specific language governing permissions and 164c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * limitations under the License. 174c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson */ 184c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson/* 194c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * $Id: ElemParam.java 468643 2006-10-28 06:56:03Z minchau $ 204c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson */ 214c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilsonpackage org.apache.xalan.templates; 224c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson 234c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilsonimport javax.xml.transform.TransformerException; 244c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson 254c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilsonimport org.apache.xalan.transformer.TransformerImpl; 264c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilsonimport org.apache.xpath.VariableStack; 274c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilsonimport org.apache.xpath.objects.XObject; 284c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson 294c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson/** 304c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * Implement xsl:param. 314c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * <pre> 324c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * <!ELEMENT xsl:param %template;> 334c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * <!ATTLIST xsl:param 344c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * name %qname; #REQUIRED 354c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * select %expr; #IMPLIED 364c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * > 374c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * </pre> 384c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * @see <a href="http://www.w3.org/TR/xslt#variables">variables in XSLT Specification</a> 394c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * @xsl.usage advanced 404c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson */ 414c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilsonpublic class ElemParam extends ElemVariable 424c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson{ 434c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson static final long serialVersionUID = -1131781475589006431L; 444c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson int m_qnameID; 454c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson 464c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson /** 474c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * Constructor ElemParam 484c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * 494c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson */ 504c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson public ElemParam(){} 514c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson 524c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson /** 534c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * Get an int constant identifying the type of element. 544c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * @see org.apache.xalan.templates.Constants 554c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * 564c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * @return The token ID of the element 574c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson */ 584c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson public int getXSLToken() 594c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson { 604c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson return Constants.ELEMNAME_PARAMVARIABLE; 614c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson } 624c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson 634c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson /** 644c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * Return the node name. 654c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * 664c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * @return The element's name 674c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson */ 684c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson public String getNodeName() 694c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson { 704c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson return Constants.ELEMNAME_PARAMVARIABLE_STRING; 714c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson } 724c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson 734c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson /** 744c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * Copy constructor. 754c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * 764c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * @param param Element from an xsl:param 774c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * 784c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * @throws TransformerException 794c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson */ 804c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson public ElemParam(ElemParam param) throws TransformerException 814c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson { 824c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson super(param); 834c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson } 844c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson 854c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson /** 864c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * This function is called after everything else has been 874c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * recomposed, and allows the template to set remaining 884c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * values that may be based on some other property that 894c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * depends on recomposition. 904c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson */ 914c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson public void compose(StylesheetRoot sroot) throws TransformerException 924c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson { 934c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson super.compose(sroot); 944c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson m_qnameID = sroot.getComposeState().getQNameID(m_qname); 954c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson int parentToken = m_parentNode.getXSLToken(); 964c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson if (parentToken == Constants.ELEMNAME_TEMPLATE 974c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson || parentToken == Constants.EXSLT_ELEMNAME_FUNCTION) 984c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson ((ElemTemplate)m_parentNode).m_inArgsSize++; 994c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson } 1004c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson 1014c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson /** 1024c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * Execute a variable declaration and push it onto the variable stack. 1034c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * @see <a href="http://www.w3.org/TR/xslt#variables">variables in XSLT Specification</a> 1044c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * 1054c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * @param transformer non-null reference to the the current transform-time state. 1064c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * 1074c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson * @throws TransformerException 1084c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson */ 1094c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson public void execute(TransformerImpl transformer) throws TransformerException 1104c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson { 1114c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson VariableStack vars = transformer.getXPathContext().getVarStack(); 1124c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson 1134c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson if(!vars.isLocalSet(m_index)) 1144c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson { 1154c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson 1164c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson int sourceNode = transformer.getXPathContext().getCurrentNode(); 1174c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson XObject var = getValue(transformer, sourceNode); 1184c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson 1194c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson // transformer.getXPathContext().getVarStack().pushVariable(m_qname, var); 1204c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson transformer.getXPathContext().getVarStack().setLocalVariable(m_index, var); 1214c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson } 1224c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson } 1234c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson 1244c7a0d97cf2b27790e6236965a1d798d710d7ec7Jesse Wilson} 125