/******************************************************************************* | |
* Copyright (c) 2008 Standards for Technology in Automotive Retail | |
* All rights reserved. This program and the accompanying materials | |
* are made available under the terms of the Eclipse Public License v1.0 | |
* which accompanies this distribution, and is available at | |
* http://www.eclipse.org/legal/epl-v10.html | |
* | |
* Contributors: | |
* David Carver - STAR - bug 224197 - initial API and implementation | |
* based on work from Apache Xalan 2.7.0 | |
*******************************************************************************/ | |
/* | |
* Copyright 1999-2004 The Apache Software Foundation. | |
* | |
* Licensed under the Apache License, Version 2.0 (the "License"); | |
* you may not use this file except in compliance with the License. | |
* You may obtain a copy of the License at | |
* | |
* http://www.apache.org/licenses/LICENSE-2.0 | |
* | |
* Unless required by applicable law or agreed to in writing, software | |
* distributed under the License is distributed on an "AS IS" BASIS, | |
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
* See the License for the specific language governing permissions and | |
* limitations under the License. | |
*/ | |
/* | |
* $Id: KeyManager.java,v 1.2 2008/03/28 02:38:16 dacarver Exp $ | |
*/ | |
package org.eclipse.wst.xsl.core.internal.compiler.xslt10.transformer; | |
import java.util.Vector; | |
import org.apache.xalan.templates.ElemTemplateElement; | |
import org.apache.xml.utils.PrefixResolver; | |
import org.apache.xml.utils.QName; | |
import org.apache.xml.utils.XMLString; | |
import org.apache.xpath.XPathContext; | |
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; | |
} | |
} |