greenplumn CDXLDirectDispatchInfo 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/operators/CDXLDirectDispatchInfo.h
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2014 VMware, Inc. or its affiliates.
/
/ @filename:
/ CDXLDirectDispatchInfo.h
/
/ @doc:
/ Class for representing the specification of directly dispatchable plans
/
/ @owner:
/
/
/ @test:
/
/---------------------------------------------------------------------------
#ifndef GPDXL_CDXLDirectDispatchInfo_H
#define GPDXL_CDXLDirectDispatchInfo_H
#include "gpos/base.h"
#include "naucrates/dxl/operators/CDXLDatum.h"
namespace gpdxl
{
using namespace gpos;
/ fwd decl
class CXMLSerializer;
/---------------------------------------------------------------------------
/ @class:
/ CDXLDirectDispatchInfo
/
/ @doc:
/ Class for representing the specification of directly dispatchable plans
/
/---------------------------------------------------------------------------
class CDXLDirectDispatchInfo : public CRefCount
{
private:
/ constants for determining segments to dispatch to
CDXLDatum2dArray *m_dispatch_identifer_datum_array;
/ true indicates m_dispatch_identifer_datum_array contains raw
/ gp_segment_id values rather than hashable datums
BOOL m_contains_raw_values;
public:
CDXLDirectDispatchInfo(const CDXLDirectDispatchInfo &) = delete;
/ ctor
explicit CDXLDirectDispatchInfo(
CDXLDatum2dArray *dispatch_identifer_datum_array,
BOOL contains_raw_values);
/ dtor
~CDXLDirectDispatchInfo() override;
BOOL
FContainsRawValues() const
{
return m_contains_raw_values;
}
/ accessor to array of datums
CDXLDatum2dArray *
GetDispatchIdentifierDatumArray() const
{
return m_dispatch_identifer_datum_array;
}
/ serialize the datum as the given element
void Serialize(CXMLSerializer *xml_serializer);
};
} / namespace gpdxl
#endif / !GPDXL_CDXLDirectDispatchInfo_H
/ EOF
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