com.sun.org.apache.xpath.internal.functions.FuncId Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of jaxp-ri Show documentation
Show all versions of jaxp-ri Show documentation
Java API for XML Processing Reference Implementation
The newest version!
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*
*
* This file incorporates work covered by the following copyright and
* permission notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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: FuncId.java,v 1.8 2010-11-01 04:35:08 joehw Exp $
*/
package com.sun.org.apache.xpath.internal.functions;
import java.util.StringTokenizer;
import com.sun.org.apache.xml.internal.dtm.DTM;
import com.sun.org.apache.xml.internal.dtm.DTMIterator;
import com.sun.org.apache.xml.internal.utils.StringVector;
import com.sun.org.apache.xpath.internal.NodeSetDTM;
import com.sun.org.apache.xpath.internal.XPathContext;
import com.sun.org.apache.xpath.internal.objects.XNodeSet;
import com.sun.org.apache.xpath.internal.objects.XObject;
import com.sun.org.apache.xpath.internal.res.XPATHErrorResources;
/**
* Execute the Id() function.
* @xsl.usage advanced
*/
public class FuncId extends FunctionOneArg
{
static final long serialVersionUID = 8930573966143567310L;
/**
* Fill in a list with nodes that match a space delimited list if ID
* ID references.
*
* @param xctxt The runtime XPath context.
* @param docContext The document where the nodes are being looked for.
* @param refval A space delimited list of ID references.
* @param usedrefs List of references for which nodes were found.
* @param nodeSet Node set where the nodes will be added to.
* @param mayBeMore true if there is another set of nodes to be looked for.
*
* @return The usedrefs value.
*/
private StringVector getNodesByID(XPathContext xctxt, int docContext,
String refval, StringVector usedrefs,
NodeSetDTM nodeSet, boolean mayBeMore)
{
if (null != refval)
{
String ref = null;
// DOMHelper dh = xctxt.getDOMHelper();
StringTokenizer tokenizer = new StringTokenizer(refval);
boolean hasMore = tokenizer.hasMoreTokens();
DTM dtm = xctxt.getDTM(docContext);
while (hasMore)
{
ref = tokenizer.nextToken();
hasMore = tokenizer.hasMoreTokens();
if ((null != usedrefs) && usedrefs.contains(ref))
{
ref = null;
continue;
}
int node = dtm.getElementById(ref);
if (DTM.NULL != node)
nodeSet.addNodeInDocOrder(node, xctxt);
if ((null != ref) && (hasMore || mayBeMore))
{
if (null == usedrefs)
usedrefs = new StringVector();
usedrefs.addElement(ref);
}
}
}
return usedrefs;
}
/**
* Execute the function. The function must return
* a valid object.
* @param xctxt The current execution context.
* @return A valid XObject.
*
* @throws javax.xml.transform.TransformerException
*/
public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException
{
int context = xctxt.getCurrentNode();
DTM dtm = xctxt.getDTM(context);
int docContext = dtm.getDocument();
if (DTM.NULL == docContext)
error(xctxt, XPATHErrorResources.ER_CONTEXT_HAS_NO_OWNERDOC, null);
XObject arg = m_arg0.execute(xctxt);
int argType = arg.getType();
XNodeSet nodes = new XNodeSet(xctxt.getDTMManager());
NodeSetDTM nodeSet = nodes.mutableNodeset();
if (XObject.CLASS_NODESET == argType)
{
DTMIterator ni = arg.iter();
StringVector usedrefs = null;
int pos = ni.nextNode();
while (DTM.NULL != pos)
{
DTM ndtm = ni.getDTM(pos);
String refval = ndtm.getStringValue(pos).toString();
pos = ni.nextNode();
usedrefs = getNodesByID(xctxt, docContext, refval, usedrefs, nodeSet,
DTM.NULL != pos);
}
// ni.detach();
}
else if (XObject.CLASS_NULL == argType)
{
return nodes;
}
else
{
String refval = arg.str();
getNodesByID(xctxt, docContext, refval, null, nodeSet, false);
}
return nodes;
}
}