greenplumn CStatsPredArrayCmp 源码
greenplumn CStatsPredArrayCmp 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/statistics/CStatsPredArrayCmp.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2020 VMware, Inc.
//
// @filename:
// CStatsPredArrayCmp.h
//
// @doc:
// ArrayCmp filter on statistics
//---------------------------------------------------------------------------
#ifndef GPNAUCRATES_CStatsPredArrayCmp_H
#define GPNAUCRATES_CStatsPredArrayCmp_H
#include "gpos/base.h"
#include "naucrates/md/IMDType.h"
#include "naucrates/statistics/CPoint.h"
#include "naucrates/statistics/CStatsPred.h"
// fwd declarations
namespace gpopt
{
class CColRef;
}
namespace gpnaucrates
{
using namespace gpos;
using namespace gpmd;
using namespace gpopt;
class CStatsPredArrayCmp : public CStatsPred
{
private:
// comparison type
CStatsPred::EStatsCmpType m_stats_cmp_type;
CPointArray *m_points;
public:
CStatsPredArrayCmp &operator=(CStatsPredArrayCmp &) = delete;
CStatsPredArrayCmp(const CStatsPredArrayCmp &) = delete;
// ctor
CStatsPredArrayCmp(ULONG colid, CStatsPred::EStatsCmpType stats_cmp_type,
CPointArray *points);
// dtor
~CStatsPredArrayCmp() override
{
m_points->Release();
}
// comparison types for stats computation
virtual CStatsPred::EStatsCmpType
GetCmpType() const
{
return m_stats_cmp_type;
}
// filter type id
EStatsPredType
GetPredStatsType() const override
{
return CStatsPred::EsptArrayCmp;
}
virtual CPointArray *
GetPoints() const
{
return m_points;
}
// conversion function
static CStatsPredArrayCmp *
ConvertPredStats(CStatsPred *pred_stats)
{
GPOS_ASSERT(nullptr != pred_stats);
GPOS_ASSERT(CStatsPred::EsptArrayCmp == pred_stats->GetPredStatsType());
return dynamic_cast<CStatsPredArrayCmp *>(pred_stats);
}
}; // class CStatsPredArrayCmp
} // namespace gpnaucrates
#endif // !GPNAUCRATES_CStatsPredArrayCmp_H
// EOF
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