greenplumn CDXLLogicalUpdate 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/operators/CDXLLogicalUpdate.h
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2012 EMC Corp.
/
/ @filename:
/ CDXLLogicalUpdate.h
/
/ @doc:
/ Class for representing logical update operator
/---------------------------------------------------------------------------
#ifndef GPDXL_CDXLLogicalUpdate_H
#define GPDXL_CDXLLogicalUpdate_H
#include "gpos/base.h"
#include "naucrates/dxl/operators/CDXLLogical.h"
namespace gpdxl
{
using namespace gpmd;
/ fwd decl
class CDXLTableDescr;
/---------------------------------------------------------------------------
/ @class:
/ CDXLLogicalUpdate
/
/ @doc:
/ Class for representing logical update operator
/
/---------------------------------------------------------------------------
class CDXLLogicalUpdate : public CDXLLogical
{
private:
/ target table descriptor
CDXLTableDescr *m_dxl_table_descr;
/ ctid column id
ULONG m_ctid_colid;
/ segmentId column id
ULONG m_segid_colid;
/ list of deletion column ids
ULongPtrArray *m_deletion_colid_array;
/ list of insertion column ids
ULongPtrArray *m_insert_colid_array;
public:
CDXLLogicalUpdate(const CDXLLogicalUpdate &) = delete;
/ ctor
CDXLLogicalUpdate(CMemoryPool *mp, CDXLTableDescr *table_descr,
ULONG ctid_colid, ULONG segid_colid,
ULongPtrArray *delete_colid_array,
ULongPtrArray *insert_colid_array);
/ dtor
~CDXLLogicalUpdate() override;
/ operator type
Edxlopid GetDXLOperator() const override;
/ operator name
const CWStringConst *GetOpNameStr() const override;
/ target table descriptor
CDXLTableDescr *
GetDXLTableDescr() const
{
return m_dxl_table_descr;
}
/ ctid column id
ULONG
GetCtIdColId() const
{
return m_ctid_colid;
}
/ segmentid column id
ULONG
GetSegmentIdColId() const
{
return m_segid_colid;
}
/ deletion column ids
ULongPtrArray *
GetDeletionColIdArray() const
{
return m_deletion_colid_array;
}
/ insertion column ids
ULongPtrArray *
GetInsertionColIdArray() const
{
return m_insert_colid_array;
}
#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 *dxlnode) const override;
/ conversion function
static CDXLLogicalUpdate *
Cast(CDXLOperator *dxl_op)
{
GPOS_ASSERT(nullptr != dxl_op);
GPOS_ASSERT(EdxlopLogicalUpdate == dxl_op->GetDXLOperator());
return dynamic_cast<CDXLLogicalUpdate *>(dxl_op);
}
};
} / namespace gpdxl
#endif / !GPDXL_CDXLLogicalUpdate_H
/ EOF
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