greenplumn CXformGbAggDedup2HashAggDedup 源码
greenplumn CXformGbAggDedup2HashAggDedup 代码
文件路径：/src/backend/gporca/libgpopt/include/gpopt/xforms/CXformGbAggDedup2HashAggDedup.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2013 VMware, Inc. or its affiliates.
//
// @filename:
// CXformGbAggDedup2HashAggDedup.h
//
// @doc:
// Transform GbAggDeduplicate to HashAggDeduplicate
//---------------------------------------------------------------------------
#ifndef GPOPT_CXformGbAggDedup2HashAggDedup_H
#define GPOPT_CXformGbAggDedup2HashAggDedup_H
#include "gpos/base.h"
#include "gpopt/xforms/CXformGbAgg2HashAgg.h"
namespace gpopt
{
using namespace gpos;
//---------------------------------------------------------------------------
// @class:
// CXformGbAggDedup2HashAggDedup
//
// @doc:
// Transform GbAggDeduplicate to HashAggDeduplicate
//
//---------------------------------------------------------------------------
class CXformGbAggDedup2HashAggDedup : public CXformGbAgg2HashAgg
{
private:
public:
CXformGbAggDedup2HashAggDedup(const CXformGbAggDedup2HashAggDedup &) =
delete;
// ctor
CXformGbAggDedup2HashAggDedup(CMemoryPool *mp);
// dtor
~CXformGbAggDedup2HashAggDedup() override = default;
// ident accessors
EXformId
Exfid() const override
{
return ExfGbAggDedup2HashAggDedup;
}
// return a string for xform name
const CHAR *
SzId() const override
{
return "CXformGbAggDedup2HashAggDedup";
}
// actual transform
void Transform(CXformContext *pxfctxt, CXformResult *pxfres,
CExpression *pexpr) const override;
}; // class CXformGbAggDedup2HashAggDedup
} // namespace gpopt
#endif // !GPOPT_CXformGbAggDedup2HashAggDedup_H
// EOF
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