greenplumn CScalarCaseTest 代码
文件路径：/src/backend/gporca/libgpopt/include/gpopt/operators/CScalarCaseTest.h
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2012 EMC Corp.
/
/ @filename:
/ CScalarCaseTest.h
/
/ @doc:
/ Scalar case test operator
/---------------------------------------------------------------------------
#ifndef GPOPT_CScalarCaseTest_H
#define GPOPT_CScalarCaseTest_H
#include "gpos/base.h"
#include "gpopt/base/CDrvdProp.h"
#include "gpopt/operators/CScalar.h"
namespace gpopt
{
using namespace gpos;
/---------------------------------------------------------------------------
/ @class:
/ CScalarCaseTest
/
/ @doc:
/ Scalar case test operator
/
/---------------------------------------------------------------------------
class CScalarCaseTest : public CScalar
{
private:
/ type id
IMDId *m_mdid_type;
public:
CScalarCaseTest(const CScalarCaseTest &) = delete;
/ ctor
CScalarCaseTest(CMemoryPool *mp, IMDId *mdid_type);
/ dtor
~CScalarCaseTest() override;
/ ident accessors
EOperatorId
Eopid() const override
{
return EopScalarCaseTest;
}
/ return a string for operator name
const CHAR *
SzId() const override
{
return "CScalarCaseTest";
}
/ the type of the scalar expression
IMDId *
MdidType() const override
{
return m_mdid_type;
}
/ 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 a copy of the operator with remapped columns
COperator *
PopCopyWithRemappedColumns(CMemoryPool *, /mp,
UlongToColRefMap *, /colref_mapping,
BOOL /must_exist
) override
{
return PopCopyDefault();
}
/ conversion function
static CScalarCaseTest *
PopConvert(COperator *pop)
{
GPOS_ASSERT(nullptr != pop);
GPOS_ASSERT(EopScalarCaseTest == pop->Eopid());
return dynamic_cast<CScalarCaseTest *>(pop);
}
}; / class CScalarCaseTest
} / namespace gpopt
#endif / !GPOPT_CScalarCaseTest_H
/ EOF
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