greenplumn CDXLLogicalCTEAnchor 源码
greenplumn CDXLLogicalCTEAnchor 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/operators/CDXLLogicalCTEAnchor.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2012 EMC Corp.
//
// @filename:
// CDXLLogicalCTEAnchor.h
//
// @doc:
// Class for representing DXL logical CTE anchors
//---------------------------------------------------------------------------
#ifndef GPDXL_CDXLLogicalCTEAnchor_H
#define GPDXL_CDXLLogicalCTEAnchor_H
#include "gpos/base.h"
#include "naucrates/dxl/operators/CDXLLogical.h"
namespace gpdxl
{
//---------------------------------------------------------------------------
// @class:
// CDXLLogicalCTEAnchor
//
// @doc:
// Class for representing DXL logical CTE producers
//
//---------------------------------------------------------------------------
class CDXLLogicalCTEAnchor : public CDXLLogical
{
private:
// cte id
ULONG m_id;
public:
CDXLLogicalCTEAnchor(CDXLLogicalCTEAnchor &) = delete;
// ctor
CDXLLogicalCTEAnchor(CMemoryPool *mp, ULONG id);
// operator type
Edxlopid GetDXLOperator() const override;
// operator name
const CWStringConst *GetOpNameStr() const override;
// cte identifier
ULONG
Id() const
{
return m_id;
}
// 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 CDXLLogicalCTEAnchor *
Cast(CDXLOperator *dxl_op)
{
GPOS_ASSERT(nullptr != dxl_op);
GPOS_ASSERT(EdxlopLogicalCTEAnchor == dxl_op->GetDXLOperator());
return dynamic_cast<CDXLLogicalCTEAnchor *>(dxl_op);
}
};
} // namespace gpdxl
#endif // !GPDXL_CDXLLogicalCTEAnchor_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
-
7、 golang
-
9、 openharmony
-
10、 Vue中input框自动聚焦