/*
* 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: FuncGenerateId.java,v 1.2.4.1 2005/09/14 20:18:45 jeffsuttor Exp $
*/
package com.sun.org.apache.xpath.internal.functions;
import com.sun.org.apache.xml.internal.dtm.DTM;
import com.sun.org.apache.xpath.internal.XPathContext;
import com.sun.org.apache.xpath.internal.objects.XObject;
import com.sun.org.apache.xpath.internal.objects.XString;
/**
* Execute the GenerateId() function.
* @xsl.usage advanced
*/
public class FuncGenerateId extends FunctionDef1Arg
{
static final long serialVersionUID = 973544842091724273L;
/**
* 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 which = getArg0AsNode(xctxt);
if (DTM.NULL != which)
{
// Note that this is a different value than in previous releases
// of Xalan. It's sensitive to the exact encoding of the node
// handle anyway, so fighting to maintain backward compatability
// really didn't make sense; it may change again as we continue
// to experiment with balancing document and node numbers within
// that value.
return new XString("N" + Integer.toHexString(which).toUpperCase());
}
else
return XString.EMPTYSTRING;
}
}