| /* |
| * 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.transformer; |
| |
| import org.apache.xml.dtm.DTM; |
| import org.apache.xml.dtm.DTMIterator; |
| import org.apache.xml.utils.NodeVector; |
| import org.apache.xml.utils.XMLString; |
| import org.apache.xpath.objects.XNodeSet; |
| import org.apache.xpath.objects.XObject; |
| import java.util.Vector; |
| import org.apache.xml.utils.QName; |
| import org.apache.xalan.templates.KeyDeclaration; |
| import org.apache.xalan.res.XSLMessages; |
| import org.apache.xalan.res.XSLTErrorResources; |
| |
| /** |
| * <meta name="usage" content="internal"/> |
| * This class filters nodes from a key iterator, according to |
| * whether or not the use value matches the ref value. |
| */ |
| public class KeyRefIterator extends org.apache.xpath.axes.ChildTestIterator |
| { |
| /** |
| * Constructor KeyRefIterator |
| * |
| * |
| * @param ref Key value to match |
| * @param ki The main key iterator used to walk the source tree |
| */ |
| public KeyRefIterator(QName name, XMLString ref, Vector keyDecls, DTMIterator ki) |
| { |
| super(null); |
| m_name = name; |
| m_ref = ref; |
| m_keyDeclarations = keyDecls; |
| m_keysNodes = ki; |
| setWhatToShow(org.apache.xml.dtm.DTMFilter.SHOW_ALL); |
| } |
| |
| DTMIterator m_keysNodes; |
| |
| /** |
| * Get the next node via getNextXXX. Bottlenecked for derived class override. |
| * @return The next node on the axis, or DTM.NULL. |
| */ |
| protected int getNextNode() |
| { |
| int next; |
| while(DTM.NULL != (next = m_keysNodes.nextNode())) |
| { |
| if(DTMIterator.FILTER_ACCEPT == filterNode(next)) |
| break; |
| } |
| m_lastFetched = next; |
| |
| return next; |
| } |
| |
| |
| /** |
| * Test whether a specified node is visible in the logical view of a |
| * TreeWalker or NodeIterator. This function will be called by the |
| * implementation of TreeWalker and NodeIterator; it is not intended to |
| * be called directly from user code. |
| * |
| * @param testnode The node to check to see if it passes the filter or not. |
| * |
| * @return a constant to determine whether the node is accepted, |
| * rejected, or skipped, as defined above . |
| */ |
| public short filterNode(int testNode) |
| { |
| boolean foundKey = false; |
| Vector keys = m_keyDeclarations; |
| |
| QName name = m_name; |
| KeyIterator ki = (KeyIterator)(((XNodeSet)m_keysNodes).getContainedIter()); |
| org.apache.xpath.XPathContext xctxt = ki.getXPathContext(); |
| |
| if(null == xctxt) |
| assertion(false, "xctxt can not be null here!"); |
| |
| try |
| { |
| XMLString lookupKey = m_ref; |
| |
| // System.out.println("lookupKey: "+lookupKey); |
| int nDeclarations = keys.size(); |
| |
| // Walk through each of the declarations made with xsl:key |
| for (int i = 0; i < nDeclarations; i++) |
| { |
| KeyDeclaration kd = (KeyDeclaration) keys.elementAt(i); |
| |
| // Only continue if the name on this key declaration |
| // matches the name on the iterator for this walker. |
| if (!kd.getName().equals(name)) |
| continue; |
| |
| foundKey = true; |
| // xctxt.setNamespaceContext(ki.getPrefixResolver()); |
| |
| // Query from the node, according the the select pattern in the |
| // use attribute in xsl:key. |
| XObject xuse = kd.getUse().execute(xctxt, testNode, ki.getPrefixResolver()); |
| |
| if (xuse.getType() != xuse.CLASS_NODESET) |
| { |
| XMLString exprResult = xuse.xstr(); |
| |
| if (lookupKey.equals(exprResult)) |
| return DTMIterator.FILTER_ACCEPT; |
| } |
| else |
| { |
| DTMIterator nl = ((XNodeSet)xuse).iterRaw(); |
| int useNode; |
| |
| while (DTM.NULL != (useNode = nl.nextNode())) |
| { |
| DTM dtm = getDTM(useNode); |
| XMLString exprResult = dtm.getStringValue(useNode); |
| if ((null != exprResult) && lookupKey.equals(exprResult)) |
| return DTMIterator.FILTER_ACCEPT; |
| } |
| } |
| |
| } // end for(int i = 0; i < nDeclarations; i++) |
| } |
| catch (javax.xml.transform.TransformerException te) |
| { |
| throw new org.apache.xml.utils.WrappedRuntimeException(te); |
| } |
| |
| if (!foundKey) |
| throw new RuntimeException( |
| XSLMessages.createMessage( |
| XSLTErrorResources.ER_NO_XSLKEY_DECLARATION, |
| new Object[] { name.getLocalName()})); |
| return DTMIterator.FILTER_REJECT; |
| } |
| |
| protected XMLString m_ref; |
| protected QName m_name; |
| |
| /** Vector of Key declarations in the stylesheet. |
| * @serial */ |
| protected Vector m_keyDeclarations; |
| |
| } |