greenplumn CDXLPhysicalPartitionSelector 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/operators/CDXLPhysicalPartitionSelector.h
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2014 VMware, Inc. or its affiliates.
/
/ @filename:
/ CDXLPhysicalPartitionSelector.h
/
/ @doc:
/ Class for representing DXL partition selector
/---------------------------------------------------------------------------
#ifndef GPDXL_CDXLPhysicalPartitionSelector_H
#define GPDXL_CDXLPhysicalPartitionSelector_H
#include "gpos/base.h"
#include "gpos/common/CBitSet.h"
#include "naucrates/dxl/operators/CDXLPhysical.h"
namespace gpdxl
{
/ indices of partition selector elements in the children array
enum Edxlps
{
EdxlpsIndexProjList = 0,
EdxlpsIndexEqFilters,
EdxlpsIndexFilters,
EdxlpsIndexResidualFilter,
EdxlpsIndexPropExpr,
EdxlpsIndexPrintableFilter,
EdxlpsIndexChild,
EdxlpsIndexSentinel
};
/---------------------------------------------------------------------------
/ @class:
/ CDXLPhysicalPartitionSelector
/
/ @doc:
/ Class for representing DXL partition selector
/
/---------------------------------------------------------------------------
class CDXLPhysicalPartitionSelector : public CDXLPhysical
{
private:
/ table id
IMDId *m_rel_mdid;
/ selector id
ULONG m_selector_id;
/ scan id
ULONG m_scan_id;
ULongPtrArray *m_parts;
public:
CDXLPhysicalPartitionSelector(CDXLPhysicalPartitionSelector &) = delete;
/ ctor
CDXLPhysicalPartitionSelector(CMemoryPool *mp, IMDId *mdid_rel,
ULONG selector_id, ULONG scan_id,
ULongPtrArray *parts);
/ dtor
~CDXLPhysicalPartitionSelector() override;
/ operator type
Edxlopid GetDXLOperator() const override;
/ operator name
const CWStringConst *GetOpNameStr() const override;
/ table id
IMDId *
GetRelMdId() const
{
return m_rel_mdid;
}
/ number of partitioning levels
ULONG
SelectorId() const
{
return m_selector_id;
}
/ scan id
ULONG
ScanId() const
{
return m_scan_id;
}
ULongPtrArray *
Partitions() const
{
return m_parts;
}
/ serialize operator in DXL format
void SerializeToDXL(CXMLSerializer *xml_serializer,
const CDXLNode *dxlnode) const override;
#ifdef GPOS_DEBUG
/ checks whether the operator has valid structure, i.e. number and
/ types of child nodes
void AssertValid(const CDXLNode *, BOOL validate_children) const override;
#endif / GPOS_DEBUG
/ conversion function
static CDXLPhysicalPartitionSelector *
Cast(CDXLOperator *dxl_op)
{
GPOS_ASSERT(nullptr != dxl_op);
GPOS_ASSERT(EdxlopPhysicalPartitionSelector ==
dxl_op->GetDXLOperator());
return dynamic_cast<CDXLPhysicalPartitionSelector *>(dxl_op);
}
};
} / namespace gpdxl
#endif / !GPDXL_CDXLPhysicalPartitionSelector_H
/ EOF
相关信息
相关文章
greenplumn CDXLCtasStorageOptions 源码