greenplumn CDXLDirectDispatchInfo 源码
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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