greenplumn CDistributionSpecHashedNoOp 源码
greenplumn CDistributionSpecHashedNoOp 代码
文件路径：/src/backend/gporca/libgpopt/include/gpopt/base/CDistributionSpecHashedNoOp.h
// Greenplum Database
// Copyright (C) 2016 VMware, Inc. or its affiliates.
#ifndef GPOPT_CDistributionSpecHashedNoOp_H
#define GPOPT_CDistributionSpecHashedNoOp_H
#include "gpopt/base/CDistributionSpecHashed.h"
namespace gpopt
{
class CDistributionSpecHashedNoOp : public CDistributionSpecHashed
{
public:
CDistributionSpecHashedNoOp(CExpressionArray *pdrgpexr);
EDistributionType Edt() const override;
BOOL Matches(const CDistributionSpec *pds) const override;
const CHAR *
SzId() const override
{
return "HASHED NO-OP";
}
void AppendEnforcers(CMemoryPool *mp, CExpressionHandle &exprhdl,
CReqdPropPlan *prpp, CExpressionArray *pdrgpexpr,
CExpression *pexpr) override;
};
} // namespace gpopt
#endif
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