greenplumn CDXLScalarBitmapIndexProbe 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/operators/CDXLScalarBitmapIndexProbe.h
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2014 VMware, Inc. or its affiliates.
/
/ @filename:
/ CDXLScalarBitmapIndexProbe.h
/
/ @doc:
/ Class for representing DXL bitmap index probe operators
/---------------------------------------------------------------------------
#ifndef GPDXL_CDXLScalarBitmapIndexProbe_H
#define GPDXL_CDXLScalarBitmapIndexProbe_H
#include "gpos/base.h"
#include "naucrates/dxl/operators/CDXLScalar.h"
namespace gpdxl
{
using namespace gpos;
/ fwd declarations
class CDXLIndexDescr;
class CXMLSerializer;
/---------------------------------------------------------------------------
/ @class:
/ CDXLScalarBitmapIndexProbe
/
/ @doc:
/ Class for representing DXL bitmap index probe operators
/
/---------------------------------------------------------------------------
class CDXLScalarBitmapIndexProbe : public CDXLScalar
{
private:
/ index descriptor associated with the scanned table
CDXLIndexDescr *m_dxl_index_descr;
public:
CDXLScalarBitmapIndexProbe(CDXLScalarBitmapIndexProbe &) = delete;
/ ctor
CDXLScalarBitmapIndexProbe(CMemoryPool *mp,
CDXLIndexDescr *dxl_index_descr);
/dtor
~CDXLScalarBitmapIndexProbe() override;
/ operator type
Edxlopid
GetDXLOperator() const override
{
return EdxlopScalarBitmapIndexProbe;
}
/ operator name
const CWStringConst *GetOpNameStr() const override;
/ index descriptor
virtual const CDXLIndexDescr *
GetDXLIndexDescr() const
{
return m_dxl_index_descr;
}
/ serialize operator in DXL format
void SerializeToDXL(CXMLSerializer *xml_serializer,
const CDXLNode *dxlnode) const override;
/ does the operator return a boolean result
BOOL
HasBoolResult(CMDAccessor * /md_accessor
) const override
{
return false;
}
#ifdef GPOS_DEBUG
/ checks whether the operator has valid structure, i.e. number and
/ types of child nodes
void AssertValid(const CDXLNode *dxlnode,
BOOL validate_children) const override;
#endif / GPOS_DEBUG
/ conversion function
static CDXLScalarBitmapIndexProbe *
Cast(CDXLOperator *dxl_op)
{
GPOS_ASSERT(nullptr != dxl_op);
GPOS_ASSERT(EdxlopScalarBitmapIndexProbe == dxl_op->GetDXLOperator());
return dynamic_cast<CDXLScalarBitmapIndexProbe *>(dxl_op);
}
}; / class CDXLScalarBitmapIndexProbe
} / namespace gpdxl
#endif / !GPDXL_CDXLScalarBitmapIndexProbe_H
/ EOF
相关信息
相关文章
greenplumn CDXLCtasStorageOptions 源码