greenplumn CDXLPhysicalRandomMotion 代码
文件路径：/src/backend/gporca/libnaucrates/src/operators/CDXLPhysicalRandomMotion.cpp
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2012 EMC Corp.
/
/ @filename:
/ CDXLPhysicalRandomMotion.cpp
/
/ @doc:
/ Implementation of DXL physical random motion operator
/---------------------------------------------------------------------------
#include "naucrates/dxl/operators/CDXLPhysicalRandomMotion.h"
#include "naucrates/dxl/operators/CDXLNode.h"
#include "naucrates/dxl/xml/CXMLSerializer.h"
using namespace gpos;
using namespace gpdxl;
/---------------------------------------------------------------------------
/ @function:
/ CDXLPhysicalRandomMotion::CDXLPhysicalRandomMotion
/
/ @doc:
/ Constructor
/
/---------------------------------------------------------------------------
CDXLPhysicalRandomMotion::CDXLPhysicalRandomMotion(CMemoryPool *mp,
BOOL is_duplicate_sensitive)
: CDXLPhysicalMotion(mp), m_is_duplicate_sensitive(is_duplicate_sensitive)
{
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLPhysicalRandomMotion::GetDXLOperator
/
/ @doc:
/ Operator type
/
/---------------------------------------------------------------------------
Edxlopid
CDXLPhysicalRandomMotion::GetDXLOperator() const
{
return EdxlopPhysicalMotionRandom;
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLPhysicalRandomMotion::GetOpNameStr
/
/ @doc:
/ Operator name
/
/---------------------------------------------------------------------------
const CWStringConst *
CDXLPhysicalRandomMotion::GetOpNameStr() const
{
return CDXLTokens::GetDXLTokenStr(EdxltokenPhysicalRandomMotion);
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLPhysicalRandomMotion::SerializeToDXL
/
/ @doc:
/ Serialize operator in DXL format
/
/---------------------------------------------------------------------------
void
CDXLPhysicalRandomMotion::SerializeToDXL(CXMLSerializer *xml_serializer,
const CDXLNode *dxlnode) const
{
const CWStringConst *element_name = GetOpNameStr();
xml_serializer->OpenElement(
CDXLTokens::GetDXLTokenStr(EdxltokenNamespacePrefix), element_name);
SerializeSegmentInfoToDXL(xml_serializer);
if (m_is_duplicate_sensitive)
{
xml_serializer->AddAttribute(
CDXLTokens::GetDXLTokenStr(EdxltokenDuplicateSensitive), true);
}
/ serialize properties
dxlnode->SerializePropertiesToDXL(xml_serializer);
/ serialize children
dxlnode->SerializeChildrenToDXL(xml_serializer);
xml_serializer->CloseElement(
CDXLTokens::GetDXLTokenStr(EdxltokenNamespacePrefix), element_name);
}
#ifdef GPOS_DEBUG
/---------------------------------------------------------------------------
/ @function:
/ CDXLPhysicalRandomMotion::AssertValid
/
/ @doc:
/ Checks whether operator node is well-structured
/
/---------------------------------------------------------------------------
void
CDXLPhysicalRandomMotion::AssertValid(const CDXLNode *dxlnode,
BOOL validate_children) const
{
/ assert proj list and filter are valid
CDXLPhysical::AssertValid(dxlnode, 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(0 < m_output_segids_array->Size());
GPOS_ASSERT(EdxlrandommIndexSentinel == dxlnode->Arity());
CDXLNode *child_dxlnode = (*dxlnode)[EdxlrandommIndexChild];
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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