greenplumn CDXLPhysicalTVF 源码
greenplumn CDXLPhysicalTVF 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/operators/CDXLPhysicalTVF.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2012 EMC Corp.
//
// @filename:
// CDXLPhysicalTVF.h
//
// @doc:
// Class for representing DXL physical table-valued functions
//---------------------------------------------------------------------------
#ifndef GPDXL_CDXLPhysicalTVF_H
#define GPDXL_CDXLPhysicalTVF_H
#include "gpos/base.h"
#include "naucrates/dxl/operators/CDXLColDescr.h"
#include "naucrates/dxl/operators/CDXLPhysical.h"
#include "naucrates/md/IMDId.h"
namespace gpdxl
{
//---------------------------------------------------------------------------
// @class:
// CDXLPhysicalTVF
//
// @doc:
// Class for representing DXL physical table-valued functions
//
//---------------------------------------------------------------------------
class CDXLPhysicalTVF : public CDXLPhysical
{
private:
// function mdid
IMDId *m_func_mdid;
// return type
IMDId *m_return_type_mdid;
// function name
CWStringConst *func_name;
public:
CDXLPhysicalTVF(const CDXLPhysicalTVF &) = delete;
// ctor
CDXLPhysicalTVF(CMemoryPool *mp, IMDId *mdid_func, IMDId *mdid_return_type,
CWStringConst *str);
// dtor
~CDXLPhysicalTVF() override;
// get operator type
Edxlopid GetDXLOperator() const override;
// get operator name
const CWStringConst *GetOpNameStr() const override;
// get function name
CWStringConst *
Pstr() const
{
return func_name;
}
// get function id
IMDId *
FuncMdId() const
{
return m_func_mdid;
}
// get return type
IMDId *
ReturnTypeMdId() const
{
return m_return_type_mdid;
}
// serialize operator in DXL format
void SerializeToDXL(CXMLSerializer *xml_serializer,
const CDXLNode *dxlnode) const override;
// conversion function
static CDXLPhysicalTVF *
Cast(CDXLOperator *dxl_op)
{
GPOS_ASSERT(nullptr != dxl_op);
GPOS_ASSERT(EdxlopPhysicalTVF == dxl_op->GetDXLOperator());
return dynamic_cast<CDXLPhysicalTVF *>(dxl_op);
}
#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
};
} // namespace gpdxl
#endif // !GPDXL_CDXLPhysicalTVF_H
// EOF
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