greenplumn CDXLPhysicalSplit 源码
greenplumn CDXLPhysicalSplit 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/operators/CDXLPhysicalSplit.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2012 EMC Corp.
//
// @filename:
// CDXLPhysicalSplit.h
//
// @doc:
// Class for representing physical split operator
//---------------------------------------------------------------------------
#ifndef GPDXL_CDXLPhysicalSplit_H
#define GPDXL_CDXLPhysicalSplit_H
#include "gpos/base.h"
#include "gpos/common/CDynamicPtrArray.h"
#include "naucrates/dxl/operators/CDXLPhysical.h"
namespace gpdxl
{
// fwd decl
class CDXLTableDescr;
//---------------------------------------------------------------------------
// @class:
// CDXLPhysicalSplit
//
// @doc:
// Class for representing physical split operators
//
//---------------------------------------------------------------------------
class CDXLPhysicalSplit : public CDXLPhysical
{
private:
// list of deletion column ids
ULongPtrArray *m_deletion_colid_array;
// list of insertion column ids
ULongPtrArray *m_insert_colid_array;
// action column id
ULONG m_action_colid;
// ctid column id
ULONG m_ctid_colid;
// segmentid column id
ULONG m_segid_colid;
public:
CDXLPhysicalSplit(const CDXLPhysicalSplit &) = delete;
// ctor
CDXLPhysicalSplit(CMemoryPool *mp, ULongPtrArray *delete_colid_array,
ULongPtrArray *insert_colid_array, ULONG action_colid,
ULONG ctid_colid, ULONG segid_colid);
// dtor
~CDXLPhysicalSplit() override;
// operator type
Edxlopid GetDXLOperator() const override;
// operator name
const CWStringConst *GetOpNameStr() const override;
// deletion column ids
ULongPtrArray *
GetDeletionColIdArray() const
{
return m_deletion_colid_array;
}
// insertion column ids
ULongPtrArray *
GetInsertionColIdArray() const
{
return m_insert_colid_array;
}
// action column id
ULONG
ActionColId() const
{
return m_action_colid;
}
// ctid column id
ULONG
GetCtIdColId() const
{
return m_ctid_colid;
}
// segmentid column id
ULONG
GetSegmentIdColId() const
{
return m_segid_colid;
}
#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
// serialize operator in DXL format
void SerializeToDXL(CXMLSerializer *xml_serializer,
const CDXLNode *dxlnode) const override;
// conversion function
static CDXLPhysicalSplit *
Cast(CDXLOperator *dxl_op)
{
GPOS_ASSERT(nullptr != dxl_op);
GPOS_ASSERT(EdxlopPhysicalSplit == dxl_op->GetDXLOperator());
return dynamic_cast<CDXLPhysicalSplit *>(dxl_op);
}
};
} // namespace gpdxl
#endif // !GPDXL_CDXLPhysicalSplit_H
// EOF
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