//---------------------------------------------------------------------------
//	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