//	Greenplum Database
//	Copyright (C) 2016 VMware, Inc. or its affiliates.

#ifndef GPOPT_CDistributionSpecStrictHashed_H
#define GPOPT_CDistributionSpecStrictHashed_H

#include "gpopt/base/CDistributionSpecHashed.h"

namespace gpopt
{
// Class to represent a "forced" hashed distribution. Introduced to support
// parallel append, this distribution is meant to be incompatible with
// (or unsatisfiable by) most other distributions to force a motion.
class CDistributionSpecStrictHashed : public CDistributionSpecHashed
{
public:
	CDistributionSpecStrictHashed(CExpressionArray *pdrgpexpr,
								  BOOL fNullsColocated);

	EDistributionType Edt() const override;

	const CHAR *
	SzId() const override
	{
		return "STRICT HASHED";
	}
};
}  // namespace gpopt

#endif