greenplumn CXformDynamicGet2DynamicTableScan 代码
文件路径：/src/backend/gporca/libgpopt/include/gpopt/xforms/CXformDynamicGet2DynamicTableScan.h
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2012 EMC Corp.
/
/ @filename:
/ CXformDynamicGet2DynamicTableScan.h
/
/ @doc:
/ Transform DynamicGet to DynamicTableScan
/---------------------------------------------------------------------------
#ifndef GPOPT_CXformDynamicGet2DynamicTableScan_H
#define GPOPT_CXformDynamicGet2DynamicTableScan_H
#include "gpos/base.h"
#include "gpopt/xforms/CXformImplementation.h"
namespace gpopt
{
using namespace gpos;
/---------------------------------------------------------------------------
/ @class:
/ CXformDynamicGet2DynamicTableScan
/
/ @doc:
/ Transform DynamicGet to DynamicTableScan
/
/---------------------------------------------------------------------------
class CXformDynamicGet2DynamicTableScan : public CXformImplementation
{
private:
public:
CXformDynamicGet2DynamicTableScan(
const CXformDynamicGet2DynamicTableScan &) = delete;
/ ctor
explicit CXformDynamicGet2DynamicTableScan(CMemoryPool *mp);
/ dtor
~CXformDynamicGet2DynamicTableScan() override = default;
/ ident accessors
EXformId
Exfid() const override
{
return ExfDynamicGet2DynamicTableScan;
}
/ return a string for xform name
const CHAR *
SzId() const override
{
return "CXformDynamicGet2DynamicTableScan";
}
/ compute xform promise for a given expression handle
EXformPromise
Exfp(CExpressionHandle & / exprhdl
) const override
{
return CXform::ExfpHigh;
}
/ actual transform
void Transform(CXformContext *pxfctxt, CXformResult *pxfres,
CExpression *pexpr) const override;
}; / class CXformDynamicGet2DynamicTableScan
} / namespace gpopt
#endif / !GPOPT_CXformDynamicGet2DynamicTableScan_H
/ EOF
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