greenplumn IMDProvider 源码
greenplumn IMDProvider 代码
文件路径：/src/backend/gporca/libnaucrates/src/md/IMDProvider.cpp
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2012 EMC Corp.
//
// @filename:
// IMDProvider.cpp
//
// @doc:
// Abstract class for retrieving metadata from an external location
//---------------------------------------------------------------------------
#include "naucrates/md/IMDProvider.h"
#include "naucrates/md/CMDIdGPDB.h"
using namespace gpmd;
//---------------------------------------------------------------------------
// @function:
// IMDProvider::GetGPDBTypeMdid
//
// @doc:
// Return the mdid for the requested type
//
//---------------------------------------------------------------------------
IMDId *
IMDProvider::GetGPDBTypeMdid(CMemoryPool *mp,
CSystemId
#ifdef GPOS_DEBUG
sysid
#endif // GPOS_DEBUG
,
IMDType::ETypeInfo type_info)
{
GPOS_ASSERT(IMDId::EmdidGPDB == sysid.MdidType());
GPOS_ASSERT(IMDType::EtiGeneric > type_info);
switch (type_info)
{
case IMDType::EtiInt2:
return GPOS_NEW(mp) CMDIdGPDB(GPDB_INT2);
case IMDType::EtiInt4:
return GPOS_NEW(mp) CMDIdGPDB(GPDB_INT4);
case IMDType::EtiInt8:
return GPOS_NEW(mp) CMDIdGPDB(GPDB_INT8);
case IMDType::EtiBool:
return GPOS_NEW(mp) CMDIdGPDB(GPDB_BOOL);
case IMDType::EtiOid:
return GPOS_NEW(mp) CMDIdGPDB(GPDB_OID);
default:
return nullptr;
}
}
// EOF
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