greenplumn CScalarArrayRefIndexList 源码
greenplumn CScalarArrayRefIndexList 代码
文件路径：/src/backend/gporca/libgpopt/include/gpopt/operators/CScalarArrayRefIndexList.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2014 VMware, Inc. or its affiliates.
//
// @filename:
// CScalarArrayRefIndexList.h
//
// @doc:
// Class for scalar arrayref index list
//---------------------------------------------------------------------------
#ifndef GPOPT_CScalarArrayRefIndexList_H
#define GPOPT_CScalarArrayRefIndexList_H
#include "gpos/base.h"
#include "gpopt/operators/CScalar.h"
#include "naucrates/md/IMDId.h"
namespace gpopt
{
using namespace gpos;
using namespace gpmd;
//---------------------------------------------------------------------------
// @class:
// CScalarArrayRefIndexList
//
// @doc:
// Scalar arrayref index list
//
//---------------------------------------------------------------------------
class CScalarArrayRefIndexList : public CScalar
{
public:
enum EIndexListType
{
EiltLower, // lower index
EiltUpper, // upper index
EiltSentinel
};
private:
// index list type
EIndexListType m_eilt;
public:
CScalarArrayRefIndexList(const CScalarArrayRefIndexList &) = delete;
// ctor
CScalarArrayRefIndexList(CMemoryPool *mp, EIndexListType eilt);
// ident accessors
EOperatorId
Eopid() const override
{
return EopScalarArrayRefIndexList;
}
// operator name
const CHAR *
SzId() const override
{
return "CScalarArrayRefIndexList";
}
// index list type
EIndexListType
Eilt() const
{
return m_eilt;
}
// 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
{
GPOS_ASSERT(
!"Invalid function call: CScalarArrayRefIndexList::MdidType()");
return nullptr;
}
// conversion function
static CScalarArrayRefIndexList *
PopConvert(COperator *pop)
{
GPOS_ASSERT(nullptr != pop);
GPOS_ASSERT(EopScalarArrayRefIndexList == pop->Eopid());
return dynamic_cast<CScalarArrayRefIndexList *>(pop);
}
}; // class CScalarArrayRefIndexList
} // namespace gpopt
#endif // !GPOPT_CScalarArrayRefIndexList_H
// EOF
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