greenplumn CMDIdGPDBCtas 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/md/CMDIdGPDBCtas.h
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2014 VMware, Inc. or its affiliates.
/
/ @filename:
/ CMDIdGPDBCtas.h
/
/ @doc:
/ Class for representing mdids for GPDB CTAS queries
/---------------------------------------------------------------------------
#ifndef GPMD_CMDIdGPDBCTAS_H
#define GPMD_CMDIdGPDBCTAS_H
#include "gpos/base.h"
#include "naucrates/md/CMDIdGPDB.h"
namespace gpmd
{
using namespace gpos;
/---------------------------------------------------------------------------
/ @class:
/ CMDIdGPDBCtas
/
/ @doc:
/ Class for representing ids of GPDB CTAS metadata objects
/
/---------------------------------------------------------------------------
class CMDIdGPDBCtas : public CMDIdGPDB
{
public:
/ ctor
explicit CMDIdGPDBCtas(OID oid);
/ copy ctor
explicit CMDIdGPDBCtas(const CMDIdGPDBCtas &mdid_source);
/ mdid type
EMDIdType
MdidType() const override
{
return EmdidGPDBCtas;
}
/ source system id
CSystemId
Sysid() const override
{
return m_sysid;
}
/ equality check
BOOL Equals(const IMDId *mdid) const override;
/ is the mdid valid
BOOL IsValid() const override;
/ debug print of the metadata id
IOstream &OsPrint(IOstream &os) const override;
/ invalid mdid
static CMDIdGPDBCtas m_mdid_invalid_key;
/ const converter
static const CMDIdGPDBCtas *
CastMdid(const IMDId *mdid)
{
GPOS_ASSERT(nullptr != mdid && EmdidGPDBCtas == mdid->MdidType());
return dynamic_cast<const CMDIdGPDBCtas *>(mdid);
}
/ non-const converter
static CMDIdGPDBCtas *
CastMdid(IMDId *mdid)
{
GPOS_ASSERT(nullptr != mdid && EmdidGPDBCtas == mdid->MdidType());
return dynamic_cast<CMDIdGPDBCtas *>(mdid);
}
};
} / namespace gpmd
#endif / !GPMD_CMDIdGPDBCTAS_H
/ EOF
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