greenplumn CDXLPhysicalProperties 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/operators/CDXLPhysicalProperties.h
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2009 Greenplum, Inc.
/
/ @filename:
/ CDXLPhysicalProperties.h
/
/ @doc:
/ Representation of properties of a physical DXL operator
/---------------------------------------------------------------------------
#ifndef GPDXL_CDXLPhysicalProperties_H
#define GPDXL_CDXLPhysicalProperties_H
#include "gpos/base.h"
#include "naucrates/dxl/operators/CDXLOperatorCost.h"
#include "naucrates/dxl/operators/CDXLProperties.h"
namespace gpdxl
{
using namespace gpos;
/---------------------------------------------------------------------------
/ @class:
/ CDXLPhysicalProperties
/
/ @doc:
/ Container for the properties of a physical operator node, such as
/ cost and output columns
/
/---------------------------------------------------------------------------
class CDXLPhysicalProperties : public CDXLProperties
{
private:
/ cost estimate
CDXLOperatorCost *m_operator_cost_dxl;
public:
CDXLPhysicalProperties(const CDXLPhysicalProperties &) = delete;
/ ctor
explicit CDXLPhysicalProperties(CDXLOperatorCost *cost);
/ dtor
~CDXLPhysicalProperties() override;
/ serialize properties in DXL format
void SerializePropertiesToDXL(
CXMLSerializer *xml_serializer) const override;
/ accessors
/ the cost estimates for the operator node
CDXLOperatorCost *GetDXLOperatorCost() const;
Edxlproperty
GetDXLPropertyType() const override
{
return EdxlpropertyPhysical;
}
/ conversion function
static CDXLPhysicalProperties *
PdxlpropConvert(CDXLProperties *dxl_properties)
{
GPOS_ASSERT(nullptr != dxl_properties);
GPOS_ASSERT(EdxlpropertyPhysical ==
dxl_properties->GetDXLPropertyType());
return dynamic_cast<CDXLPhysicalProperties *>(dxl_properties);
}
};
} / namespace gpdxl
#endif / !GPDXL_CDXLPhysicalProperties_H
/ EOF
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