greenplumn CXformGbAggDedup2StreamAggDedup 源码
greenplumn CXformGbAggDedup2StreamAggDedup 代码
文件路径：/src/backend/gporca/libgpopt/include/gpopt/xforms/CXformGbAggDedup2StreamAggDedup.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2013 VMware, Inc. or its affiliates.
//
// @filename:
// CXformGbAggDedup2StreamAggDedup.h
//
// @doc:
// Transform GbAggDeduplicate to StreamAggDeduplicate
//---------------------------------------------------------------------------
#ifndef GPOPT_CXformGbAggDedup2StreamAggDedup_H
#define GPOPT_CXformGbAggDedup2StreamAggDedup_H
#include "gpos/base.h"
#include "gpopt/xforms/CXformGbAgg2StreamAgg.h"
namespace gpopt
{
using namespace gpos;
//---------------------------------------------------------------------------
// @class:
// CXformGbAggDedup2StreamAggDedup
//
// @doc:
// Transform GbAggDeduplicate to StreamAggDeduplicate
//
//---------------------------------------------------------------------------
class CXformGbAggDedup2StreamAggDedup : public CXformGbAgg2StreamAgg
{
private:
public:
CXformGbAggDedup2StreamAggDedup(const CXformGbAggDedup2StreamAggDedup &) =
delete;
// ctor
CXformGbAggDedup2StreamAggDedup(CMemoryPool *mp);
// dtor
~CXformGbAggDedup2StreamAggDedup() override = default;
// ident accessors
EXformId
Exfid() const override
{
return ExfGbAggDedup2StreamAggDedup;
}
// return a string for xform name
const CHAR *
SzId() const override
{
return "CXformGbAggDedup2StreamAggDedup";
}
// actual transform
void Transform(CXformContext *pxfctxt, CXformResult *pxfres,
CExpression *pexpr) const override;
}; // class CXformGbAggDedup2StreamAggDedup
} // namespace gpopt
#endif // !GPOPT_CXformGbAggDedup2StreamAggDedup_H
// EOF
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