greenplumn CXformGet2TableScan 代码
文件路径：/src/backend/gporca/libgpopt/include/gpopt/xforms/CXformGet2TableScan.h
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2009 Greenplum, Inc.
/
/ @filename:
/ CXformGet2TableScan.h
/
/ @doc:
/ Transform Get to TableScan
/---------------------------------------------------------------------------
#ifndef GPOPT_CXformGet2TableScan_H
#define GPOPT_CXformGet2TableScan_H
#include "gpos/base.h"
#include "gpopt/xforms/CXformImplementation.h"
namespace gpopt
{
using namespace gpos;
/---------------------------------------------------------------------------
/ @class:
/ CXformGet2TableScan
/
/ @doc:
/ Transform Get to TableScan
/
/---------------------------------------------------------------------------
class CXformGet2TableScan : public CXformImplementation
{
private:
public:
CXformGet2TableScan(const CXformGet2TableScan &) = delete;
/ ctor
explicit CXformGet2TableScan(CMemoryPool *);
/ dtor
~CXformGet2TableScan() override = default;
/ ident accessors
EXformId
Exfid() const override
{
return ExfGet2TableScan;
}
/ return a string for xform name
const CHAR *
SzId() const override
{
return "CXformGet2TableScan";
}
/ compute xform promise for a given expression handle
EXformPromise Exfp(CExpressionHandle &exprhdl) const override;
/ actual transform
void Transform(CXformContext *pxfctxt, CXformResult *pxfres,
CExpression *pexpr) const override;
}; / class CXformGet2TableScan
} / namespace gpopt
#endif / !GPOPT_CXformGet2TableScan_H
/ EOF
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