greenplumn CDXLPhysicalAbstractBitmapScan 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/operators/CDXLPhysicalAbstractBitmapScan.h
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2014 VMware, Inc. or its affiliates.
/
/ @filename:
/ CDXLPhysicalAbstractBitmapScan.h
/
/ @doc:
/ Parent class for representing DXL bitmap table scan operators,
/ both not partitioned and dynamic.
/---------------------------------------------------------------------------
#ifndef GPDXL_CDXLPhysicalAbstractBitmapScan_H
#define GPDXL_CDXLPhysicalAbstractBitmapScan_H
#include "gpos/base.h"
#include "naucrates/dxl/operators/CDXLPhysical.h"
namespace gpdxl
{
using namespace gpos;
enum Edxlbs
{
EdxlbsIndexProjList = 0,
EdxlbsIndexFilter,
EdxlbsIndexRecheckCond,
EdxlbsIndexBitmap,
EdxlbsSentinel
};
/ fwd declarations
class CDXLTableDescr;
class CXMLSerializer;
/---------------------------------------------------------------------------
/ @class:
/ CDXLPhysicalAbstractBitmapScan
/
/ @doc:
/ Parent class for representing DXL bitmap table scan operators, both not
/ partitioned and dynamic.
/
/---------------------------------------------------------------------------
class CDXLPhysicalAbstractBitmapScan : public CDXLPhysical
{
private:
protected:
/ table descriptor for the scanned table
CDXLTableDescr *m_dxl_table_descr;
public:
CDXLPhysicalAbstractBitmapScan(const CDXLPhysicalAbstractBitmapScan &) =
delete;
/ ctor
CDXLPhysicalAbstractBitmapScan(CMemoryPool *mp, CDXLTableDescr *table_descr)
: CDXLPhysical(mp), m_dxl_table_descr(table_descr)
{
GPOS_ASSERT(nullptr != table_descr);
}
/ dtor
~CDXLPhysicalAbstractBitmapScan() override;
/ table descriptor
const CDXLTableDescr *
GetDXLTableDescr()
{
return m_dxl_table_descr;
}
#ifdef GPOS_DEBUG
/ checks whether the operator has valid structure, i.e. number and
/ types of child nodes
void AssertValid(const CDXLNode *node,
BOOL validate_children) const override;
#endif / GPOS_DEBUG
}; / class CDXLPhysicalAbstractBitmapScan
} / namespace gpdxl
#endif / !GPDXL_CDXLPhysicalAbstractBitmapScan_H
/ EOF
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