/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /* * $Id: ElemPI.java 468643 2006-10-28 06:56:03Z minchau $ */ package org.apache.xalan.templates; import javax.xml.transform.TransformerException; import org.apache.xalan.res.XSLTErrorResources; import org.apache.xalan.transformer.TransformerImpl; import org.apache.xml.utils.XML11Char; import org.apache.xpath.XPathContext; /** * Implement xsl:processing-instruction. *
 * 
 * 
 * 
* @see section-Creating-Processing-Instructions in XSLT Specification * @xsl.usage advanced */ public class ElemPI extends ElemTemplateElement { static final long serialVersionUID = 5621976448020889825L; /** * The xsl:processing-instruction element has a required name * attribute that specifies the name of the processing instruction node. * The value of the name attribute is interpreted as an * attribute value template. * @serial */ private AVT m_name_atv = null; /** * Set the "name" attribute. * DJD * * @param v Value for the name attribute */ public void setName(AVT v) { m_name_atv = v; } /** * Get the "name" attribute. * DJD * * @return The value of the "name" attribute */ public AVT getName() { return m_name_atv; } /** * This function is called after everything else has been * recomposed, and allows the template to set remaining * values that may be based on some other property that * depends on recomposition. */ public void compose(StylesheetRoot sroot) throws TransformerException { super.compose(sroot); java.util.Vector vnames = sroot.getComposeState().getVariableNames(); if(null != m_name_atv) m_name_atv.fixupVariables(vnames, sroot.getComposeState().getGlobalsSize()); } /** * Get an int constant identifying the type of element. * @see org.apache.xalan.templates.Constants * * @return The token ID for the element */ public int getXSLToken() { return Constants.ELEMNAME_PI; } /** * Return the node name. * * @return The element's name */ public String getNodeName() { return Constants.ELEMNAME_PI_STRING; } /** * Create a processing instruction in the result tree. * The content of the xsl:processing-instruction element is a * template for the string-value of the processing instruction node. * @see section-Creating-Processing-Instructions in XSLT Specification * * @param transformer non-null reference to the the current transform-time state. * * @throws TransformerException */ public void execute( TransformerImpl transformer) throws TransformerException { XPathContext xctxt = transformer.getXPathContext(); int sourceNode = xctxt.getCurrentNode(); String piName = m_name_atv == null ? null : m_name_atv.evaluate(xctxt, sourceNode, this); // Ignore processing instruction if name is null if (piName == null) return; if (piName.equalsIgnoreCase("xml")) { transformer.getMsgMgr().warn( this, XSLTErrorResources.WG_PROCESSINGINSTRUCTION_NAME_CANT_BE_XML, new Object[]{ Constants.ATTRNAME_NAME, piName }); return; } // Only check if an avt was used (ie. this wasn't checked at compose time.) // Ignore processing instruction, if invalid else if ((!m_name_atv.isSimple()) && (!XML11Char.isXML11ValidNCName(piName))) { transformer.getMsgMgr().warn( this, XSLTErrorResources.WG_PROCESSINGINSTRUCTION_NOTVALID_NCNAME, new Object[]{ Constants.ATTRNAME_NAME, piName }); return; } // Note the content model is: // String data = transformer.transformToString(this); try { transformer.getResultTreeHandler().processingInstruction(piName, data); } catch(org.xml.sax.SAXException se) { throw new TransformerException(se); } } /** * Add a child to the child list. * * @param newChild Child to add to child list * * @return The child just added to the child list * * @throws DOMException */ public ElemTemplateElement appendChild(ElemTemplateElement newChild) { int type = ((ElemTemplateElement) newChild).getXSLToken(); switch (type) { // char-instructions case Constants.ELEMNAME_TEXTLITERALRESULT : case Constants.ELEMNAME_APPLY_TEMPLATES : case Constants.ELEMNAME_APPLY_IMPORTS : case Constants.ELEMNAME_CALLTEMPLATE : case Constants.ELEMNAME_FOREACH : case Constants.ELEMNAME_VALUEOF : case Constants.ELEMNAME_COPY_OF : case Constants.ELEMNAME_NUMBER : case Constants.ELEMNAME_CHOOSE : case Constants.ELEMNAME_IF : case Constants.ELEMNAME_TEXT : case Constants.ELEMNAME_COPY : case Constants.ELEMNAME_VARIABLE : case Constants.ELEMNAME_MESSAGE : // instructions // case Constants.ELEMNAME_PI: // case Constants.ELEMNAME_COMMENT: // case Constants.ELEMNAME_ELEMENT: // case Constants.ELEMNAME_ATTRIBUTE: break; default : error(XSLTErrorResources.ER_CANNOT_ADD, new Object[]{ newChild.getNodeName(), this.getNodeName() }); //"Can not add " +((ElemTemplateElement)newChild).m_elemName + //" to " + this.m_elemName); } return super.appendChild(newChild); } }