/**
* Copyright (C) 2010 Orbeon, Inc.
*
* This program is free software; you can redistribute it and/or modify it under the terms of the
* GNU Lesser General Public License as published by the Free Software Foundation; either version
* 2.1 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* The full text of the license is available at http://www.gnu.org/copyleft/lesser.html
*/
package org.orbeon.oxf.xforms.function;
import org.orbeon.saxon.expr.*;
import org.orbeon.saxon.om.Item;
import org.orbeon.saxon.sxpath.XPathExpression;
import org.orbeon.saxon.trans.XPathException;
import org.orbeon.saxon.value.Int64Value;
public class Last extends XFormsFunction {
public Item evaluateItem(XPathContext xpathContext) throws XPathException {
if (xpathContext.getCurrentIterator() instanceof XPathExpression.ContextItemSequenceIterator) {
// We have a top level expression and Saxon does not know about the context nodeset
return new Int64Value(bindingContext().nodeset().size());
} else {
return new Int64Value(xpathContext.getLast());
}
}
@Override
public int getIntrinsicDependencies() {
return StaticProperty.DEPENDS_ON_LAST;
}
@Override
public PathMap.PathMapNodeSet addToPathMap(PathMap pathMap, PathMap.PathMapNodeSet pathMapNodeSet) {
// Leave everything unchanged
return pathMapNodeSet;
}
}