greenplumn IMDTypeInt2 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/md/IMDTypeInt2.h
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2014 VMware, Inc. or its affiliates.
/
/ @filename:
/ IMDTypeInt2.h
/
/ @doc:
/ Interface for INT2 types in the metadata cache
/---------------------------------------------------------------------------
#ifndef GPMD_IMDTypeInt2_H
#define GPMD_IMDTypeInt2_H
#include "gpos/base.h"
#include "naucrates/md/IMDType.h"
/ fwd decl
namespace gpnaucrates
{
class IDatumInt2;
}
namespace gpmd
{
using namespace gpos;
using namespace gpnaucrates;
/---------------------------------------------------------------------------
/ @class:
/ IMDTypeInt2
/
/ @doc:
/ Interface for INT2 types in the metadata cache
/
/---------------------------------------------------------------------------
class IMDTypeInt2 : public IMDType
{
public:
/ type id
static ETypeInfo
GetTypeInfo()
{
return EtiInt2;
}
ETypeInfo
GetDatumType() const override
{
return IMDTypeInt2::GetTypeInfo();
}
/ factory function for INT2 datums
virtual IDatumInt2 *CreateInt2Datum(CMemoryPool *mp, SINT value,
BOOL is_null) const = 0;
};
} / namespace gpmd
#endif / !GPMD_IMDTypeInt2_H
/ EOF
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