greenplumn CScalarValuesList 源码
greenplumn CScalarValuesList 代码
文件路径：/src/backend/gporca/libgpopt/include/gpopt/operators/CScalarValuesList.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2014 Pivotal, Inc.
//
// @filename:
// CScalarValuesList.h
//
// @doc:
// Class for scalar arrayref index list
//---------------------------------------------------------------------------
#ifndef GPOPT_CScalarValuesList_H
#define GPOPT_CScalarValuesList_H
#include "gpos/base.h"
#include "gpopt/base/COptCtxt.h"
#include "gpopt/operators/CScalar.h"
#include "naucrates/md/IMDId.h"
#include "naucrates/md/IMDTypeBool.h"
namespace gpopt
{
using namespace gpos;
using namespace gpmd;
//---------------------------------------------------------------------------
// @class:
// CScalarValuesList
//
// @doc:
// Scalar arrayref index list
//
//---------------------------------------------------------------------------
class CScalarValuesList : public CScalar
{
public:
// private copy ctor
CScalarValuesList(const CScalarValuesList &) = delete;
// ctor
CScalarValuesList(CMemoryPool *mp);
// ident accessors
EOperatorId
Eopid() const override
{
return EopScalarValuesList;
}
// operator name
const CHAR *
SzId() const override
{
return "CScalarValuesList";
}
// match function
BOOL Matches(COperator *pop) const override;
// sensitivity to order of inputs
BOOL
FInputOrderSensitive() const override
{
return true;
}
// return a copy of the operator with remapped columns
COperator *
PopCopyWithRemappedColumns(CMemoryPool *, //mp,
UlongToColRefMap *, //colref_mapping,
BOOL //must_exist
) override
{
return PopCopyDefault();
}
// type of expression's result
IMDId *
MdidType() const override
{
CMDAccessor *md_accessor = COptCtxt::PoctxtFromTLS()->Pmda();
return md_accessor->PtMDType<IMDTypeBool>()->MDId();
}
// conversion function
static CScalarValuesList *
PopConvert(COperator *pop)
{
GPOS_ASSERT(nullptr != pop);
GPOS_ASSERT(EopScalarValuesList == pop->Eopid());
return dynamic_cast<CScalarValuesList *>(pop);
}
}; // class CScalarValuesList
} // namespace gpopt
#endif // !GPOPT_CScalarValuesList_H
// EOF
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