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

/*
  xf:max(anyAtomicType* $srcval) => anyAtomicType?
  xf:max(anyAtomicType* $srcval, string $collationLiteral) => anyAtomicType?
*/

#ifndef _FUNCTIONMAX_HPP
#define _FUNCTIONMAX_HPP

#include <pathan/Pathan.hpp>

#include <pathan/functionAPI/AggregateFunction.hpp>

class PATHAN_EXPORT FunctionMax : public AggregateFunction
{
public:
  static const XMLCh name[];

  ///Constructor. Sets arg def to NOT_OPTIONAL.
  FunctionMax(const VectorOfDataItems &args, XPath2MemoryManager* memMgr);
  
  /** Returns the maximum value from the given sequence. **/
  Sequence collapseTreeInternal(DynamicContext* context, int flags=0) const;

};

#endif // _FUNCTIONMAX_HPP