greenplumn CDXLScalarCoerceToDomain 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/operators/CDXLScalarCoerceToDomain.h
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2014 VMware, Inc. or its affiliates.
/
/ @filename:
/ CDXLScalarCoerceToDomain.h
/
/ @doc:
/ Class for representing DXL CoerceToDomain operation,
/ the operator captures coercing a value to a domain type,
/
/ at runtime, the precise set of constraints to be checked against
/ value are determined,
/ if the value passes, it is returned as the result, otherwise an error
/ is raised.
/
/ @owner:
/
/
/ @test:
/
/---------------------------------------------------------------------------
#ifndef GPDXL_CDXLScalarCoerceToDomain_H
#define GPDXL_CDXLScalarCoerceToDomain_H
#include "gpos/base.h"
#include "naucrates/dxl/operators/CDXLScalarCoerceBase.h"
#include "naucrates/md/IMDId.h"
namespace gpdxl
{
using namespace gpos;
using namespace gpmd;
/---------------------------------------------------------------------------
/ @class:
/ CDXLScalarCoerceToDomain
/
/ @doc:
/ Class for representing DXL casting operator
/
/---------------------------------------------------------------------------
class CDXLScalarCoerceToDomain : public CDXLScalarCoerceBase
{
private:
public:
CDXLScalarCoerceToDomain(const CDXLScalarCoerceToDomain &) = delete;
/ ctor/dtor
CDXLScalarCoerceToDomain(CMemoryPool *mp, IMDId *mdid_type,
INT type_modifier,
EdxlCoercionForm dxl_coerce_format, INT location);
~CDXLScalarCoerceToDomain() override = default;
/ ident accessor
Edxlopid
GetDXLOperator() const override
{
return EdxlopScalarCoerceToDomain;
}
/ name of the DXL operator name
const CWStringConst *GetOpNameStr() const override;
/ conversion function
static CDXLScalarCoerceToDomain *
Cast(CDXLOperator *dxl_op)
{
GPOS_ASSERT(nullptr != dxl_op);
GPOS_ASSERT(EdxlopScalarCoerceToDomain == dxl_op->GetDXLOperator());
return dynamic_cast<CDXLScalarCoerceToDomain *>(dxl_op);
}
};
} / namespace gpdxl
#endif / !GPDXL_CDXLScalarCoerceToDomain_H
/ EOF
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