/*
* 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: FuncDoclocation.java,v 1.9 2004/08/17 19:25:36 jycli Exp $
*/
package org.apache.xpath.functions;
import org.apache.xml.dtm.DTM;
import org.apache.xpath.XPathContext;
import org.apache.xpath.objects.XObject;
import org.apache.xpath.objects.XString;
/**
* Execute the proprietary document-location() function, which returns
* a node set of documents.
* @xsl.usage advanced
*/
public class FuncDoclocation extends FunctionDef1Arg
{
static final long serialVersionUID = 7469213946343568769L;
/**
* 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 whereNode = getArg0AsNode(xctxt);
String fileLocation = null;
if (DTM.NULL != whereNode)
{
DTM dtm = xctxt.getDTM(whereNode);
// %REVIEW%
if (DTM.DOCUMENT_FRAGMENT_NODE == dtm.getNodeType(whereNode))
{
whereNode = dtm.getFirstChild(whereNode);
}
if (DTM.NULL != whereNode)
{
fileLocation = dtm.getDocumentBaseURI();
// int owner = dtm.getDocument();
// fileLocation = xctxt.getSourceTreeManager().findURIFromDoc(owner);
}
}
return new XString((null != fileLocation) ? fileLocation : "");
}
}