greenplumn CXformSelect2BitmapBoolOp 源码
greenplumn CXformSelect2BitmapBoolOp 代码
文件路径：/src/backend/gporca/libgpopt/include/gpopt/xforms/CXformSelect2BitmapBoolOp.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2014 VMware, Inc. or its affiliates.
//
// @filename:
// CXformSelect2BitmapBoolOp.h
//
// @doc:
// Transform select over table into a bitmap table get with bitmap bool op
//---------------------------------------------------------------------------
#ifndef GPOPT_CXformSelect2BitmapBoolOp_H
#define GPOPT_CXformSelect2BitmapBoolOp_H
#include "gpos/base.h"
#include "gpopt/xforms/CXformExploration.h"
namespace gpopt
{
//---------------------------------------------------------------------------
// @class:
// CXformSelect2BitmapBoolOp
//
// @doc:
// Transform select over a table into a bitmap table get with bitmap bool op
//
//---------------------------------------------------------------------------
class CXformSelect2BitmapBoolOp : public CXformExploration
{
private:
public:
CXformSelect2BitmapBoolOp(const CXformSelect2BitmapBoolOp &) = delete;
// ctor
explicit CXformSelect2BitmapBoolOp(CMemoryPool *mp);
// dtor
~CXformSelect2BitmapBoolOp() override = default;
// identifier
EXformId
Exfid() const override
{
return ExfSelect2BitmapBoolOp;
}
// xform name
const CHAR *
SzId() const override
{
return "CXformSelect2BitmapBoolOp";
}
// 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 CXformSelect2BitmapBoolOp
} // namespace gpopt
#endif // !GPOPT_CXformSelect2BitmapBoolOp_H
// EOF
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