greenplumn CMappingElementColIdParamId 源码
greenplumn CMappingElementColIdParamId 代码
文件路径：/src/include/gpopt/translate/CMappingElementColIdParamId.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2012 EMC Corp.
//
// @filename:
// CMappingElementColIdParamId.h
//
// @doc:
// Wrapper class providing functions for the mapping element between ColId
// and ParamId during DXL->PlStmt translation
//
// @test:
//
//
//---------------------------------------------------------------------------
#ifndef GPDXL_CMappingElementColIdParamId_H
#define GPDXL_CMappingElementColIdParamId_H
#include "gpos/base.h"
#include "naucrates/md/IMDId.h"
namespace gpdxl
{
using namespace gpos;
using namespace gpmd;
//---------------------------------------------------------------------------
// @class:
// CMappingElementColIdParamId
//
// @doc:
// Wrapper class providing functions for the mapping element between
// ColId and ParamId during DXL->PlStmt translation
//
//---------------------------------------------------------------------------
class CMappingElementColIdParamId : public CRefCount
{
private:
// column identifier that is used as the key
ULONG m_colid;
// param identifier
ULONG m_paramid;
// param type
IMDId *m_mdid;
INT m_type_modifier;
public:
// ctors and dtor
CMappingElementColIdParamId(ULONG colid, ULONG paramid, IMDId *mdid,
INT type_modifier);
~CMappingElementColIdParamId() override = default;
// return the ColId
ULONG
GetColId() const
{
return m_colid;
}
// return the ParamId
ULONG
ParamId() const
{
return m_paramid;
}
// return the type
IMDId *
MdidType() const
{
return m_mdid;
}
INT
TypeModifier() const
{
return m_type_modifier;
}
};
} // namespace gpdxl
#endif // GPDXL_CMappingElementColIdParamId_H
// EOF
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