greenplumn CDXLPhysicalDML 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/operators/CDXLPhysicalDML.h
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2012 EMC Corp.
/
/ @filename:
/ CDXLPhysicalDML.h
/
/ @doc:
/ Class for representing physical DML operator
/---------------------------------------------------------------------------
#ifndef GPDXL_CDXLPhysicalDML_H
#define GPDXL_CDXLPhysicalDML_H
#include "gpos/base.h"
#include "gpos/common/CDynamicPtrArray.h"
#include "naucrates/dxl/operators/CDXLPhysical.h"
namespace gpdxl
{
/ fwd decl
class CDXLTableDescr;
class CDXLDirectDispatchInfo;
enum EdxlDmlType
{
Edxldmlinsert,
Edxldmldelete,
Edxldmlupdate,
EdxldmlSentinel
};
/---------------------------------------------------------------------------
/ @class:
/ CDXLPhysicalDML
/
/ @doc:
/ Class for representing physical DML operators
/
/---------------------------------------------------------------------------
class CDXLPhysicalDML : public CDXLPhysical
{
private:
/ operator type
const EdxlDmlType m_dxl_dml_type;
/ target table descriptor
CDXLTableDescr *m_dxl_table_descr;
/ list of source column ids
ULongPtrArray *m_src_colids_array;
/ action column id
ULONG m_action_colid;
/ oid column id
ULONG m_oid_colid;
/ ctid column id
ULONG m_ctid_colid;
/ segmentid column id
ULONG m_segid_colid;
/ direct dispatch info for insert statements
CDXLDirectDispatchInfo *m_direct_dispatch_info;
/ needs the data to be sorted or not
BOOL m_input_sort_req;
/ Is Split Update
BOOL m_fSplit;
public:
CDXLPhysicalDML(const CDXLPhysicalDML &) = delete;
/ ctor
CDXLPhysicalDML(CMemoryPool *mp, const EdxlDmlType dxl_dml_type,
CDXLTableDescr *table_descr,
ULongPtrArray *src_colids_array, ULONG action_colid,
ULONG oid_colid, ULONG ctid_colid, ULONG segid_colid,
CDXLDirectDispatchInfo *dxl_direct_dispatch_info,
BOOL input_sort_req, BOOL fSplit);
/ dtor
~CDXLPhysicalDML() override;
/ operator type
Edxlopid GetDXLOperator() const override;
/ operator name
const CWStringConst *GetOpNameStr() const override;
/ DML operator type
EdxlDmlType
GetDmlOpType() const
{
return m_dxl_dml_type;
}
/ target table descriptor
CDXLTableDescr *
GetDXLTableDescr() const
{
return m_dxl_table_descr;
}
/ source column ids
ULongPtrArray *
GetSrcColIdsArray() const
{
return m_src_colids_array;
}
/ action column id
ULONG
ActionColId() const
{
return m_action_colid;
}
/ oid column id
ULONG
OidColId() const
{
return m_oid_colid;
}
/ ctid column id
ULONG
GetCtIdColId() const
{
return m_ctid_colid;
}
/ segmentid column id
ULONG
GetSegmentIdColId() const
{
return m_segid_colid;
}
/ direct dispatch info
CDXLDirectDispatchInfo *
GetDXLDirectDispatchInfo() const
{
return m_direct_dispatch_info;
}
/ needs the data to be sorted or not
BOOL
IsInputSortReq() const
{
return m_input_sort_req;
}
/ Is update using split
BOOL
FSplit() const
{
return m_fSplit;
}
#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
/ serialize operator in DXL format
void SerializeToDXL(CXMLSerializer *xml_serializer,
const CDXLNode *node) const override;
/ conversion function
static CDXLPhysicalDML *
Cast(CDXLOperator *dxl_op)
{
GPOS_ASSERT(nullptr != dxl_op);
GPOS_ASSERT(EdxlopPhysicalDML == dxl_op->GetDXLOperator());
return dynamic_cast<CDXLPhysicalDML *>(dxl_op);
}
};
} / namespace gpdxl
#endif / !GPDXL_CDXLPhysicalDML_H
/ EOF
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