greenplumn CDistributionSpecStrictRandom 代码
文件路径：/src/backend/gporca/libgpopt/include/gpopt/base/CDistributionSpecStrictRandom.h
/ Greenplum Database
/ Copyright (C) 2016 VMware, Inc. or its affiliates.
#ifndef GPOPT_CDistributionSpecStrictRandom_H
#define GPOPT_CDistributionSpecStrictRandom_H
#include "gpos/base.h"
#include "gpopt/base/CDistributionSpecRandom.h"
namespace gpopt
{
using namespace gpos;
/---------------------------------------------------------------------------
/ @class:
/ CDistributionSpecStrictRandom
/
/ @doc:
/ Class for representing forced random distribution.
/
/---------------------------------------------------------------------------
class CDistributionSpecStrictRandom : public CDistributionSpecRandom
{
public:
/ctor
CDistributionSpecStrictRandom();
/ accessor
EDistributionType
Edt() const override
{
return CDistributionSpec::EdtStrictRandom;
}
const CHAR *
SzId() const override
{
return "STRICT RANDOM";
}
/ does this distribution match the given one
BOOL Matches(const CDistributionSpec *pds) const override;
/ does this distribution satisfy the given one
BOOL FSatisfies(const CDistributionSpec *pds) const override;
}; / class CDistributionSpecStrictRandom
} / namespace gpopt
#endif / !GPOPT_CDistributionSpecStrictRandom_H
/ EOF
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