greenplumn CDXLPhysicalGatherMotion 代码
文件路径：/src/backend/gporca/libnaucrates/src/operators/CDXLPhysicalGatherMotion.cpp
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2010 Greenplum, Inc.
/
/ @filename:
/ CDXLPhysicalGatherMotion.cpp
/
/ @doc:
/ Implementation of DXL physical gather motion operator
/---------------------------------------------------------------------------
#include "naucrates/dxl/operators/CDXLPhysicalGatherMotion.h"
#include "naucrates/dxl/operators/CDXLNode.h"
#include "naucrates/dxl/xml/CXMLSerializer.h"
using namespace gpos;
using namespace gpdxl;
/---------------------------------------------------------------------------
/ @function:
/ CDXLPhysicalGatherMotion::CDXLPhysicalGatherMotion
/
/ @doc:
/ Constructor
/
/---------------------------------------------------------------------------
CDXLPhysicalGatherMotion::CDXLPhysicalGatherMotion(CMemoryPool *mp)
: CDXLPhysicalMotion(mp)
{
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLPhysicalGatherMotion::GetDXLOperator
/
/ @doc:
/ Operator type
/
/---------------------------------------------------------------------------
Edxlopid
CDXLPhysicalGatherMotion::GetDXLOperator() const
{
return EdxlopPhysicalMotionGather;
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLPhysicalGatherMotion::IOutputSegIdx
/
/ @doc:
/ Output segment index
/
/---------------------------------------------------------------------------
INT
CDXLPhysicalGatherMotion::IOutputSegIdx() const
{
GPOS_ASSERT(nullptr != m_output_segids_array);
GPOS_ASSERT(1 == m_output_segids_array->Size());
return *((*m_output_segids_array)[0]);
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLPhysicalGatherMotion::GetOpNameStr
/
/ @doc:
/ Operator name
/
/---------------------------------------------------------------------------
const CWStringConst *
CDXLPhysicalGatherMotion::GetOpNameStr() const
{
return CDXLTokens::GetDXLTokenStr(EdxltokenPhysicalGatherMotion);
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLPhysicalGatherMotion::SerializeToDXL
/
/ @doc:
/ Serialize operator in DXL format
/
/---------------------------------------------------------------------------
void
CDXLPhysicalGatherMotion::SerializeToDXL(CXMLSerializer *xml_serializer,
const CDXLNode *node) const
{
const CWStringConst *element_name = GetOpNameStr();
xml_serializer->OpenElement(
CDXLTokens::GetDXLTokenStr(EdxltokenNamespacePrefix), element_name);
SerializeSegmentInfoToDXL(xml_serializer);
/ serialize properties
node->SerializePropertiesToDXL(xml_serializer);
/ serialize children
node->SerializeChildrenToDXL(xml_serializer);
xml_serializer->CloseElement(
CDXLTokens::GetDXLTokenStr(EdxltokenNamespacePrefix), element_name);
}
#ifdef GPOS_DEBUG
/---------------------------------------------------------------------------
/ @function:
/ CDXLPhysicalGatherMotion::AssertValid
/
/ @doc:
/ Checks whether operator node is well-structured
/
/---------------------------------------------------------------------------
void
CDXLPhysicalGatherMotion::AssertValid(const CDXLNode *node,
BOOL validate_children) const
{
/ assert proj list and filter are valid
CDXLPhysical::AssertValid(node, validate_children);
GPOS_ASSERT(m_input_segids_array != nullptr);
GPOS_ASSERT(0 < m_input_segids_array->Size());
GPOS_ASSERT(m_output_segids_array != nullptr);
GPOS_ASSERT(1 == m_output_segids_array->Size());
GPOS_ASSERT(EdxlgmIndexSentinel == node->Arity());
CDXLNode *child_dxlnode = (*node)[EdxlgmIndexChild];
GPOS_ASSERT(EdxloptypePhysical ==
child_dxlnode->GetOperator()->GetDXLOperatorType());
if (validate_children)
{
child_dxlnode->GetOperator()->AssertValid(child_dxlnode,
validate_children);
}
}
#endif / GPOS_DEBUG
/ EOF
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