| /* |
| * 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 java.util.Vector; |
| |
| //import org.w3c.dom.Node; |
| //import org.w3c.dom.NodeList; |
| import org.apache.xml.dtm.DTM; |
| |
| import org.apache.xalan.templates.ElemTemplateElement; |
| import org.apache.xml.utils.QName; |
| import org.apache.xml.utils.PrefixResolver; |
| import org.apache.xml.utils.XMLString; |
| import org.apache.xpath.XPathContext; |
| import org.apache.xpath.axes.LocPathIterator; |
| import org.apache.xpath.objects.XNodeSet; |
| |
| /** |
| * This class manages the key tables. |
| */ |
| public class KeyManager |
| { |
| |
| /** |
| * Table of tables of element keys. |
| * @see org.apache.xalan.transformer.KeyTable |
| */ |
| private transient Vector m_key_tables = null; |
| |
| /** |
| * Given a valid element key, return the corresponding node list. |
| * |
| * @param xctxt The XPath runtime state |
| * @param doc The document node |
| * @param name The key element name |
| * @param ref The key value we're looking for |
| * @param nscontext The prefix resolver for the execution context |
| * |
| * @return A nodelist of nodes mathing the given key |
| * |
| * @throws javax.xml.transform.TransformerException |
| */ |
| public XNodeSet getNodeSetDTMByKey( |
| XPathContext xctxt, int doc, QName name, XMLString ref, PrefixResolver nscontext) |
| throws javax.xml.transform.TransformerException |
| { |
| |
| XNodeSet nl = null; |
| ElemTemplateElement template = (ElemTemplateElement) nscontext; // yuck -sb |
| |
| if ((null != template) |
| && null != template.getStylesheetRoot().getKeysComposed()) |
| { |
| boolean foundDoc = false; |
| |
| if (null == m_key_tables) |
| { |
| m_key_tables = new Vector(4); |
| } |
| else |
| { |
| int nKeyTables = m_key_tables.size(); |
| |
| for (int i = 0; i < nKeyTables; i++) |
| { |
| KeyTable kt = (KeyTable) m_key_tables.elementAt(i); |
| |
| if (kt.getKeyTableName().equals(name) && doc == kt.getDocKey()) |
| { |
| nl = kt.getNodeSetDTMByKey(name, ref); |
| |
| if (nl != null) |
| { |
| foundDoc = true; |
| |
| break; |
| } |
| } |
| } |
| } |
| |
| if ((null == nl) &&!foundDoc /* && m_needToBuildKeysTable */) |
| { |
| KeyTable kt = |
| new KeyTable(doc, nscontext, name, |
| template.getStylesheetRoot().getKeysComposed(), |
| xctxt); |
| |
| m_key_tables.addElement(kt); |
| |
| if (doc == kt.getDocKey()) |
| { |
| foundDoc = true; |
| nl = kt.getNodeSetDTMByKey(name, ref); |
| } |
| } |
| } |
| |
| return nl; |
| } |
| } |