greenplumn CScalarArray 代码
文件路径：/src/backend/gporca/libgpopt/include/gpopt/operators/CScalarArray.h
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2012 EMC Corp.
/
/ @filename:
/ CScalarArray.h
/
/ @doc:
/ Class for scalar arrays
/---------------------------------------------------------------------------
#ifndef GPOPT_CScalarArray_H
#define GPOPT_CScalarArray_H
#include "gpos/base.h"
#include "gpopt/operators/CScalar.h"
#include "gpopt/operators/CScalarConst.h"
#include "naucrates/md/IMDId.h"
namespace gpopt
{
using namespace gpos;
using namespace gpmd;
using CScalarConstArray = CDynamicPtrArray<CScalarConst, CleanupRelease>;
/---------------------------------------------------------------------------
/ @class:
/ CScalarArray
/
/ @doc:
/ Scalar array
/
/---------------------------------------------------------------------------
class CScalarArray : public CScalar
{
private:
/ element type id
IMDId *m_pmdidElem;
/ array type id
IMDId *m_pmdidArray;
/ is array multidimensional
BOOL m_fMultiDimensional;
/ const values
CScalarConstArray *m_pdrgPconst;
public:
CScalarArray(const CScalarArray &) = delete;
/ ctor
CScalarArray(CMemoryPool *mp, IMDId *elem_type_mdid, IMDId *array_type_mdid,
BOOL is_multidimenstional);
/ ctor
CScalarArray(CMemoryPool *mp, IMDId *elem_type_mdid, IMDId *array_type_mdid,
BOOL is_multidimenstional, CScalarConstArray *pdrgPconst);
/ dtor
~CScalarArray() override;
/ ident accessors
EOperatorId
Eopid() const override
{
return EopScalarArray;
}
/ return a string for aggregate function
const CHAR *
SzId() const override
{
return "CScalarArray";
}
/ operator specific hash function
ULONG HashValue() const override;
/ 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();
}
/ conversion function
static CScalarArray *
PopConvert(COperator *pop)
{
GPOS_ASSERT(nullptr != pop);
GPOS_ASSERT(EopScalarArray == pop->Eopid());
return dynamic_cast<CScalarArray *>(pop);
}
/ element type id
IMDId *PmdidElem() const;
/ array type id
IMDId *PmdidArray() const;
/ is array multi-dimensional
BOOL FMultiDimensional() const;
/ type of expression's result
IMDId *MdidType() const override;
/ CScalarConst array
CScalarConstArray *PdrgPconst() const;
/ print
IOstream &OsPrint(IOstream &os) const override;
}; / class CScalarArray
} / namespace gpopt
#endif / !GPOPT_CScalarArray_H
/ EOF
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