- /*
- * 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 org.w3c.dom.*;
- //import org.w3c.dom.traversal.NodeIterator;
- import org.apache.xml.dtm.DTM;
- import org.apache.xml.dtm.DTMIterator;
- import org.apache.xml.dtm.ref.DTMTreeWalker;
-
- import org.xml.sax.*;
-
- import org.apache.xpath.*;
- import org.apache.xpath.objects.XObject;
- import org.apache.xalan.trace.SelectionEvent;
- import org.apache.xalan.res.XSLTErrorResources;
- import org.apache.xml.utils.QName;
- import org.apache.xalan.transformer.TreeWalker2Result;
- import org.apache.xalan.transformer.TransformerImpl;
- import org.apache.xalan.transformer.ResultTreeHandler;
-
- import javax.xml.transform.TransformerException;
-
- /**
- * <meta name="usage" content="advanced"/>
- * Implement xsl:copy-of.
- * <pre>
- * <!ELEMENT xsl:copy-of EMPTY>
- * <!ATTLIST xsl:copy-of select %expr; #REQUIRED>
- * </pre>
- * @see <a href="http://www.w3.org/TR/xslt#copy-of">copy-of in XSLT Specification</a>
- */
- public class ElemCopyOf extends ElemTemplateElement
- {
-
- /**
- * The required select attribute contains an expression.
- * @serial
- */
- public XPath m_selectExpression = null;
-
- /**
- * Set the "select" attribute.
- * The required select attribute contains an expression.
- *
- * @param expr Expression for select attribute
- */
- public void setSelect(XPath expr)
- {
- m_selectExpression = expr;
- }
-
- /**
- * Get the "select" attribute.
- * The required select attribute contains an expression.
- *
- * @return Expression for select attribute
- */
- public XPath getSelect()
- {
- return m_selectExpression;
- }
-
- /**
- * 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);
-
- StylesheetRoot.ComposeState cstate = sroot.getComposeState();
- m_selectExpression.fixupVariables(cstate.getVariableNames(), cstate.getGlobalsSize());
- }
-
- /**
- * 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_COPY_OF;
- }
-
- /**
- * Return the node name.
- *
- * @return The element's name
- */
- public String getNodeName()
- {
- return Constants.ELEMNAME_COPY_OF_STRING;
- }
-
- /**
- * The xsl:copy-of element can be used to insert a result tree
- * fragment into the result tree, without first converting it to
- * a string as xsl:value-of does (see [7.6.1 Generating Text with
- * xsl:value-of]).
- *
- * @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
- {
- if (TransformerImpl.S_DEBUG)
- transformer.getTraceManager().fireTraceEvent(this);
-
- try
- {
- XPathContext xctxt = transformer.getXPathContext();
- int sourceNode = xctxt.getCurrentNode();
- XObject value = m_selectExpression.execute(xctxt, sourceNode, this);
-
- if (TransformerImpl.S_DEBUG)
- transformer.getTraceManager().fireSelectedEvent(sourceNode, this,
- "select", m_selectExpression, value);
-
- ResultTreeHandler handler = transformer.getResultTreeHandler();
-
- if (null != value)
- {
- int type = value.getType();
- String s;
-
- switch (type)
- {
- case XObject.CLASS_BOOLEAN :
- case XObject.CLASS_NUMBER :
- case XObject.CLASS_STRING :
- s = value.str();
-
- handler.characters(s.toCharArray(), 0, s.length());
- break;
- case XObject.CLASS_NODESET :
-
- // System.out.println(value);
- DTMIterator nl = value.iter();
-
- // Copy the tree.
- DTMTreeWalker tw = new TreeWalker2Result(transformer, handler);
- int pos;
-
- while (DTM.NULL != (pos = nl.nextNode()))
- {
- DTM dtm = xctxt.getDTMManager().getDTM(pos);
- short t = dtm.getNodeType(pos);
-
- // If we just copy the whole document, a startDoc and endDoc get
- // generated, so we need to only walk the child nodes.
- if (t == DTM.DOCUMENT_NODE)
- {
- for (int child = dtm.getFirstChild(pos); child != DTM.NULL;
- child = dtm.getNextSibling(child))
- {
- tw.traverse(child);
- }
- }
- else if (t == DTM.ATTRIBUTE_NODE)
- {
- handler.addAttribute(pos);
- }
- else
- {
- tw.traverse(pos);
- }
- }
- // nl.detach();
- break;
- case XObject.CLASS_RTREEFRAG :
- handler.outputResultTreeFragment(value,
- transformer.getXPathContext());
- break;
- default :
-
- s = value.str();
-
- handler.characters(s.toCharArray(), 0, s.length());
- break;
- }
- }
-
- // I don't think we want this. -sb
- // if (TransformerImpl.S_DEBUG)
- // transformer.getTraceManager().fireSelectedEvent(sourceNode, this,
- // "endSelect", m_selectExpression, value);
-
- }
- catch(org.xml.sax.SAXException se)
- {
- throw new TransformerException(se);
- }
- finally
- {
- if (TransformerImpl.S_DEBUG)
- transformer.getTraceManager().fireTraceEndEvent(this);
- }
-
- }
-
- /**
- * Add a child to the child list.
- *
- * @param newChild Child to add to this node's child list
- *
- * @return Child just added to child list
- */
- public ElemTemplateElement appendChild(ElemTemplateElement newChild)
- {
-
- error(XSLTErrorResources.ER_CANNOT_ADD,
- new Object[]{ newChild.getNodeName(),
- this.getNodeName() }); //"Can not add " +((ElemTemplateElement)newChild).m_elemName +
-
- //" to " + this.m_elemName);
- return null;
- }
-
- /**
- * Call the children visitors.
- * @param visitor The visitor whose appropriate method will be called.
- */
- protected void callChildVisitors(XSLTVisitor visitor, boolean callAttrs)
- {
- if(callAttrs)
- m_selectExpression.getExpression().callVisitors(m_selectExpression, visitor);
- super.callChildVisitors(visitor, callAttrs);
- }
-
- }