/*
 * Copyright (c) 2001, DecisionSoft Limited All rights reserved.
 * Please see LICENSE.TXT for more information.
 */

/*
11.1.7 op:node-before
op:node-before(node $parameter1, node $parameter2) => boolean

If the node identified by the value of $parameter1 occurs in document order before the node identified by the value of $parameter2, this function returns true; otherwise, it returns false. The rules determining the order of nodes within a single document and in different documents can be found in [XQuery 1.0 and XPath 2.0 Data Model]. This function backs up the "<<" operator.
11.1.7.1 Examples

    *

      op:node-before($item1, $item2) returns true.
    *

op:node-before($item1, $item1) returns false.

11.1.8 op:node-after
op:node-after(node $parameter1, node $parameter2) => boolean

If the node identified by the value of $parameter1 occurs in document after the node identified by the value of $parameter2, this function returns true; otherwise, it returns false. The rules determining the order of nodes within a single document and in different documents can be found in [XQuery 1.0 and XPath 2.0 Data Model]. This function backs up the ">>" operator.
11.1.8.1 Examples

    *

      op:node-after($item1, $item2) returns false.
    *

op:node-after($item1, $item1) returns false. 
*/

#ifndef _ORDERCOMPARISON_HPP
#define _ORDERCOMPARISON_HPP

#include <pathan/Pathan.hpp>

#include <pathan/dataItem/DataItemOperator.hpp>

/** OpPlus operator function*/
class PATHAN_EXPORT OrderComparison : public DataItemOperator
{
public:
  static const XMLCh name[];

  ///testBefore should be set to true if you want to test that the first parameter is before the second.
  OrderComparison(const VectorOfDataItems &args, bool testBefore, XPath2MemoryManager* memMgr);

	///if testBefore is true then this method returns true if the node in the first paremeter is before the node in the second
  Sequence collapseTreeInternal(DynamicContext* context, int flags=0) const;


private:
	bool _testBefore;
};

#endif // _FUNCTIONOPPLUS_HPP