| /* |
| * 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.xalan.templates; |
| |
| import java.io.*; |
| |
| import java.util.*; |
| |
| //import org.w3c.dom.*; |
| |
| import org.xml.sax.*; |
| import org.xml.sax.helpers.*; |
| |
| import java.util.StringTokenizer; |
| |
| import org.apache.xml.utils.QName; |
| import org.apache.xml.utils.NameSpace; |
| import org.apache.xml.utils.StringToStringTable; |
| import org.apache.xpath.XPathContext; |
| import org.apache.xml.utils.MutableAttrListImpl; |
| import org.apache.xalan.res.XSLMessages; |
| import org.apache.xpath.XPathContext; |
| import org.apache.xalan.res.XSLTErrorResources; |
| import org.apache.xalan.extensions.ExtensionHandler; |
| import org.apache.xalan.extensions.ExtensionsTable; |
| import org.apache.xalan.transformer.TransformerImpl; |
| |
| import javax.xml.transform.TransformerException; |
| |
| import org.apache.xml.dtm.DTM; |
| |
| /** |
| * <meta name="usage" content="advanced"/> |
| * Implement an extension element. |
| * @see <a href="http://www.w3.org/TR/xslt#extension-element">extension-element in XSLT Specification</a> |
| */ |
| public class ElemExtensionCall extends ElemLiteralResult |
| { |
| |
| // ExtensionNSHandler nsh; |
| |
| /** The Namespace URI for this extension call element. |
| * @serial */ |
| String m_extns; |
| |
| /** Language used by extension. |
| * @serial */ |
| String m_lang; |
| |
| /** URL pointing to extension. |
| * @serial */ |
| String m_srcURL; |
| |
| /** Source for script. |
| * @serial */ |
| String m_scriptSrc; |
| |
| /** Declaration for Extension element. |
| * @serial */ |
| ElemExtensionDecl m_decl = null; |
| |
| /** |
| * Get an int constant identifying the type of element. |
| * @see org.apache.xalan.templates.Constants |
| * |
| *@return The token ID for this element |
| */ |
| public int getXSLToken() |
| { |
| return Constants.ELEMNAME_EXTENSIONCALL; |
| } |
| |
| /** |
| * Return the node name. |
| * |
| * @return The element's name |
| */ |
| |
| // public String getNodeName() |
| // { |
| // TODO: Need prefix. |
| // return localPart; |
| // } |
| |
| /** |
| * 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); |
| m_extns = this.getNamespace(); |
| |
| StylesheetRoot stylesheet = this.getStylesheetRoot(); |
| |
| m_decl = getElemExtensionDecl(stylesheet, m_extns); |
| |
| if (null != m_decl) |
| { |
| for (ElemTemplateElement child = m_decl.getFirstChildElem(); |
| child != null; child = child.getNextSiblingElem()) |
| { |
| if (Constants.ELEMNAME_EXTENSIONSCRIPT == child.getXSLToken()) |
| { |
| ElemExtensionScript sdecl = (ElemExtensionScript) child; |
| |
| m_lang = sdecl.getLang(); |
| m_srcURL = sdecl.getSrc(); |
| |
| ElemTemplateElement childOfSDecl = sdecl.getFirstChildElem(); |
| |
| if (null != childOfSDecl) |
| { |
| if (Constants.ELEMNAME_TEXTLITERALRESULT |
| == childOfSDecl.getXSLToken()) |
| { |
| ElemTextLiteral tl = (ElemTextLiteral) childOfSDecl; |
| char[] chars = tl.getChars(); |
| |
| m_scriptSrc = new String(chars); |
| } |
| } |
| |
| break; |
| } |
| } |
| } |
| else |
| { |
| |
| // stylesheet.error(xxx); |
| } |
| } |
| |
| /** |
| * Return the ElemExtensionDecl for this extension element |
| * |
| * |
| * @param stylesheet Stylesheet root associated with this extension element |
| * @param namespace Namespace associated with this extension element |
| * |
| * @return the ElemExtensionDecl for this extension element. |
| */ |
| private ElemExtensionDecl getElemExtensionDecl(StylesheetRoot stylesheet, |
| String namespace) |
| { |
| |
| ElemExtensionDecl decl = null; |
| int n = stylesheet.getGlobalImportCount(); |
| |
| for (int i = 0; i < n; i++) |
| { |
| Stylesheet imported = stylesheet.getGlobalImport(i); |
| |
| for (ElemTemplateElement child = imported.getFirstChildElem(); |
| child != null; child = child.getNextSiblingElem()) |
| { |
| if (Constants.ELEMNAME_EXTENSIONDECL == child.getXSLToken()) |
| { |
| decl = (ElemExtensionDecl) child; |
| |
| String prefix = decl.getPrefix(); |
| String declNamespace = child.getNamespaceForPrefix(prefix); |
| |
| if (namespace.equals(declNamespace)) |
| { |
| return decl; |
| } |
| } |
| } |
| } |
| |
| return decl; |
| } |
| |
| /** |
| * Execute the fallbacks when an extension is not available. |
| * |
| * @param transformer non-null reference to the the current transform-time state. |
| * @param sourceNode non-null reference to the <a href="http://www.w3.org/TR/xslt#dt-current-node">current source node</a>. |
| * @param mode reference, which may be null, to the <a href="http://www.w3.org/TR/xslt#modes">current mode</a>. |
| * |
| * @throws TransformerException |
| */ |
| public void executeFallbacks( |
| TransformerImpl transformer) |
| throws TransformerException |
| { |
| for (ElemTemplateElement child = m_firstChild; child != null; |
| child = child.m_nextSibling) |
| { |
| if (child.getXSLToken() == Constants.ELEMNAME_FALLBACK) |
| { |
| try |
| { |
| transformer.pushElemTemplateElement(child); |
| ((ElemFallback) child).executeFallback(transformer); |
| } |
| finally |
| { |
| transformer.popElemTemplateElement(); |
| } |
| } |
| } |
| |
| } |
| |
| |
| /** |
| * Execute an extension. |
| * |
| * @param transformer non-null reference to the the current transform-time state. |
| * @param sourceNode non-null reference to the <a href="http://www.w3.org/TR/xslt#dt-current-node">current source node</a>. |
| * @param mode reference, which may be null, to the <a href="http://www.w3.org/TR/xslt#modes">current mode</a>. |
| * |
| * @throws TransformerException |
| */ |
| public void execute( |
| TransformerImpl transformer) |
| throws TransformerException |
| { |
| |
| try |
| { |
| transformer.getResultTreeHandler().flushPending(); |
| |
| XPathContext liaison = ((XPathContext) transformer.getXPathContext()); |
| ExtensionsTable etable = liaison.getExtensionsTable(); |
| ExtensionHandler nsh = etable.get(m_extns); |
| |
| // We're seeing this extension namespace used for the first time. Try to |
| // autodeclare it as a java namespace. |
| |
| if (null == nsh) |
| { |
| nsh = etable.makeJavaNamespace(m_extns); |
| |
| if(null != nsh) |
| etable.addExtensionNamespace(m_extns, nsh); |
| else |
| { |
| executeFallbacks(transformer); |
| return; |
| } |
| |
| } |
| |
| try |
| { |
| nsh.processElement(this.getLocalName(), this, transformer, |
| getStylesheet(), this); |
| } |
| catch (Exception e) |
| { |
| |
| // System.out.println(e); |
| // e.printzStackTrace(); |
| String msg = e.getMessage(); |
| |
| TransformerException te; |
| if(e instanceof TransformerException) |
| { |
| te = (TransformerException)e; |
| } |
| else |
| { |
| if(null != msg) |
| te = new TransformerException(e); |
| else |
| te = new TransformerException(XSLMessages.createMessage(XSLTErrorResources.ER_UNKNOWN_ERROR_CALLING_EXTENSION, null), e); //"Unknown error when calling extension!", e); |
| } |
| if(null == te.getLocator()) |
| te.setLocator(this); |
| |
| if (null != msg) |
| { |
| if (msg.indexOf("fatal") >= 0) |
| { |
| transformer.getErrorListener().fatalError(te); |
| } |
| else if(e instanceof RuntimeException) |
| transformer.getErrorListener().error(te); // ?? |
| else |
| transformer.getErrorListener().warning(te); |
| |
| } |
| else |
| transformer.getErrorListener().error(te); // ?? |
| |
| executeFallbacks( |
| transformer); |
| } |
| } |
| catch(org.xml.sax.SAXException se) |
| { |
| transformer.getErrorListener().fatalError(new TransformerException(se)); |
| } |
| } |
| |
| /** |
| * Return the raw value of the attribute. |
| * |
| * @param rawName Raw name of the attribute to get |
| * |
| * @return the raw value of the attribute or null if not found |
| */ |
| public String getAttribute(String rawName) |
| { |
| |
| AVT avt = getLiteralResultAttribute(rawName); |
| |
| if ((null != avt) && avt.getRawName().equals(rawName)) |
| { |
| return avt.getSimpleString(); |
| } |
| |
| return null; |
| } |
| |
| /** |
| * Return the value of the attribute interpreted as an Attribute |
| * Value Template (in other words, you can use curly expressions |
| * such as href="http://{website}". |
| * |
| * @param rawName Raw name of the attribute to get |
| * @param sourceNode non-null reference to the <a href="http://www.w3.org/TR/xslt#dt-current-node">current source node</a>. |
| * @param transformer non-null reference to the the current transform-time state. |
| * |
| * @return the value of the attribute |
| * |
| * @throws TransformerException |
| */ |
| public String getAttribute( |
| String rawName, org.w3c.dom.Node sourceNode, TransformerImpl transformer) |
| throws TransformerException |
| { |
| |
| AVT avt = getLiteralResultAttribute(rawName); |
| |
| if ((null != avt) && avt.getRawName().equals(rawName)) |
| { |
| XPathContext xctxt = transformer.getXPathContext(); |
| |
| return avt.evaluate(xctxt, |
| xctxt.getDTMHandleFromNode(sourceNode), |
| this); |
| } |
| |
| return null; |
| } |
| |
| /** |
| * Accept a visitor and call the appropriate method |
| * for this class. |
| * |
| * @param visitor The visitor whose appropriate method will be called. |
| * @return true if the children of the object should be visited. |
| */ |
| protected boolean accept(XSLTVisitor visitor) |
| { |
| return visitor.visitExtensionElement(this); |
| } |
| |
| |
| } |