#include "../config/pathan_config.h"
/*
 * Copyright (c) 2001, DecisionSoft Limited All rights reserved.
 * Please see LICENSE.TXT for more information.
 */

#include <pathan/operators/NodeComparison.hpp>
#include <pathan/Node.hpp>
#include <pathan/ATBooleanOrDerived.hpp>
#include <pathan/DynamicContext.hpp>
#include <pathan/internal/factory/DatatypeFactory.hpp>
#include <xercesc/dom/DOMNode.hpp>

/*static*/ const XMLCh NodeComparison::name[]={ XERCES_CPP_NAMESPACE_QUALIFIER chLatin_i, XERCES_CPP_NAMESPACE_QUALIFIER chLatin_s, XERCES_CPP_NAMESPACE_QUALIFIER chNull };

NodeComparison::NodeComparison(const VectorOfDataItems &args, XPath2MemoryManager* memMgr)
  : DataItemOperator(name, args, memMgr)
{
}

Sequence NodeComparison::collapseTreeInternal(DynamicContext* context, int flags) const
{

	XPath2MemoryManager* memMgr = context->getMemoryManager();

	const Node* arg1 = getNodeParam(0,context);
  if(arg1 == 0)
    return Sequence(memMgr);
	const Node* arg2 = getNodeParam(1,context);
  if(arg2 == 0)
    return Sequence(memMgr);
  
	const XERCES_CPP_NAMESPACE_QUALIFIER DOMNode *one = arg1->getDOMNode();
	const XERCES_CPP_NAMESPACE_QUALIFIER DOMNode *two = arg2->getDOMNode();

	return Sequence(DatatypeFactory::POD2AT::createBoolean(memMgr, const_cast<XERCES_CPP_NAMESPACE_QUALIFIER DOMNode *>(one)->isSameNode(two), context), memMgr);
}