greenplumn CDXLSpoolInfo 源码
greenplumn CDXLSpoolInfo 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/operators/CDXLSpoolInfo.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2011 Greenplum, Inc.
//
// @filename:
// CDXLSpoolInfo.h
//
// @doc:
// Class for representing spooling info in shared scan nodes, and nodes that
// allow sharing (currently Materialize and Sort).
//---------------------------------------------------------------------------
#ifndef GPDXL_CDXLSpoolInfo_H
#define GPDXL_CDXLSpoolInfo_H
#include "gpos/base.h"
#include "gpos/string/CWStringConst.h"
#include "naucrates/dxl/gpdb_types.h"
namespace gpdxl
{
// fwd decl
class CXMLSerializer;
enum Edxlspooltype
{
EdxlspoolNone,
EdxlspoolMaterialize,
EdxlspoolSort,
EdxlspoolSentinel
};
//---------------------------------------------------------------------------
// @class:
// CDXLSpoolInfo
//
// @doc:
// Class for representing spooling info in shared scan nodes, and nodes that
// allow sharing (currently Materialize and Sort).
//
//---------------------------------------------------------------------------
class CDXLSpoolInfo
{
private:
// id of the spooling operator
ULONG m_spool_id;
// type of the underlying spool
Edxlspooltype m_spool_type;
// is the spool shared across multiple slices
BOOL m_is_multi_slice_shared;
// slice executing the underlying sort or materialize
INT m_executor_slice_id;
// spool type name
const CWStringConst *GetSpoolTypeName() const;
public:
CDXLSpoolInfo(CDXLSpoolInfo &) = delete;
// ctor/dtor
CDXLSpoolInfo(ULONG ulSpoolId, Edxlspooltype edxlspstype, BOOL fMultiSlice,
INT iExecutorSlice);
// accessors
// spool id
ULONG GetSpoolId() const;
// spool type (sort or materialize)
Edxlspooltype GetSpoolType() const;
// is spool shared across multiple slices
BOOL IsMultiSlice() const;
// id of slice executing the underlying operation
INT GetExecutorSliceId() const;
// serialize operator in DXL format
void SerializeToDXL(CXMLSerializer *) const;
};
} // namespace gpdxl
#endif // !GPDXL_CDXLSpoolInfo_H
// EOF
相关信息
相关文章
greenplumn CDXLCtasStorageOptions 源码
0
赞
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
8、 golang
-
9、 openharmony
-
10、 Vue中input框自动聚焦