greenplumn CDXLPhysicalMotion 源码
greenplumn CDXLPhysicalMotion 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/operators/CDXLPhysicalMotion.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2010 Greenplum, Inc.
//
// @filename:
// CDXLPhysicalMotion.h
//
// @doc:
// Base class for representing DXL motion operators.
//---------------------------------------------------------------------------
#ifndef GPDXL_CDXLPhysicalMotion_H
#define GPDXL_CDXLPhysicalMotion_H
#include "gpos/base.h"
#include "gpos/common/CDynamicPtrArray.h"
#include "naucrates/dxl/operators/CDXLNode.h"
#include "naucrates/dxl/operators/CDXLPhysical.h"
namespace gpdxl
{
using namespace gpos;
//---------------------------------------------------------------------------
// @class:
// CDXLPhysicalMotion
//
// @doc:
// Base class for representing DXL motion operators
//
//---------------------------------------------------------------------------
class CDXLPhysicalMotion : public CDXLPhysical
{
private:
// serialize the given list of segment ids into a comma-separated string
CWStringDynamic *GetSegIdsCommaSeparatedStr(
const IntPtrArray *segment_ids_array) const;
// serialize input and output segment ids into a comma-separated string
CWStringDynamic *GetInputSegIdsStr() const;
CWStringDynamic *GetOutputSegIdsStr() const;
protected:
// list of input segment ids
IntPtrArray *m_input_segids_array;
// list of output segment ids
IntPtrArray *m_output_segids_array;
void SerializeSegmentInfoToDXL(CXMLSerializer *xml_serializer) const;
public:
CDXLPhysicalMotion(CDXLPhysicalMotion &) = delete;
// ctor/dtor
explicit CDXLPhysicalMotion(CMemoryPool *mp);
~CDXLPhysicalMotion() override;
// accessors
const IntPtrArray *GetInputSegIdsArray() const;
const IntPtrArray *GetOutputSegIdsArray() const;
// setters
void SetInputSegIds(IntPtrArray *input_segids_array);
void SetOutputSegIds(IntPtrArray *output_segids_array);
void SetSegmentInfo(IntPtrArray *input_segids_array,
IntPtrArray *output_segids_array);
// index of relational child node in the children array
virtual ULONG GetRelationChildIdx() const = 0;
// conversion function
static CDXLPhysicalMotion *
Cast(CDXLOperator *dxl_op)
{
GPOS_ASSERT(nullptr != dxl_op);
GPOS_ASSERT(
EdxlopPhysicalMotionGather == dxl_op->GetDXLOperator() ||
EdxlopPhysicalMotionBroadcast == dxl_op->GetDXLOperator() ||
EdxlopPhysicalMotionRedistribute == dxl_op->GetDXLOperator() ||
EdxlopPhysicalMotionRoutedDistribute == dxl_op->GetDXLOperator() ||
EdxlopPhysicalMotionRandom == dxl_op->GetDXLOperator());
return dynamic_cast<CDXLPhysicalMotion *>(dxl_op);
}
};
} // namespace gpdxl
#endif // !GPDXL_CDXLPhysicalMotion_H
// EOF
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