- /*
- * 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;
- }
- }