greenplumn CDXLPhysicalSplit 代码
文件路径：/src/backend/gporca/libnaucrates/src/operators/CDXLPhysicalSplit.cpp
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2012 EMC Corp.
/
/ @filename:
/ CDXLPhysicalSplit.cpp
/
/ @doc:
/ Implementation of DXL physical Split operator
/---------------------------------------------------------------------------
#include "naucrates/dxl/operators/CDXLPhysicalSplit.h"
#include "naucrates/dxl/CDXLUtils.h"
#include "naucrates/dxl/operators/CDXLNode.h"
#include "naucrates/dxl/operators/CDXLTableDescr.h"
#include "naucrates/dxl/xml/CXMLSerializer.h"
using namespace gpos;
using namespace gpdxl;
/---------------------------------------------------------------------------
/ @function:
/ CDXLPhysicalSplit::CDXLPhysicalSplit
/
/ @doc:
/ Ctor
/
/---------------------------------------------------------------------------
CDXLPhysicalSplit::CDXLPhysicalSplit(CMemoryPool *mp,
ULongPtrArray *delete_colid_array,
ULongPtrArray *insert_colid_array,
ULONG action_colid, ULONG ctid_colid,
ULONG segid_colid)
: CDXLPhysical(mp),
m_deletion_colid_array(delete_colid_array),
m_insert_colid_array(insert_colid_array),
m_action_colid(action_colid),
m_ctid_colid(ctid_colid),
m_segid_colid(segid_colid)
{
GPOS_ASSERT(nullptr != delete_colid_array);
GPOS_ASSERT(nullptr != insert_colid_array);
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLPhysicalSplit::~CDXLPhysicalSplit
/
/ @doc:
/ Dtor
/
/---------------------------------------------------------------------------
CDXLPhysicalSplit::~CDXLPhysicalSplit()
{
m_deletion_colid_array->Release();
m_insert_colid_array->Release();
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLPhysicalSplit::GetDXLOperator
/
/ @doc:
/ Operator type
/
/---------------------------------------------------------------------------
Edxlopid
CDXLPhysicalSplit::GetDXLOperator() const
{
return EdxlopPhysicalSplit;
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLPhysicalSplit::GetOpNameStr
/
/ @doc:
/ Operator name
/
/---------------------------------------------------------------------------
const CWStringConst *
CDXLPhysicalSplit::GetOpNameStr() const
{
return CDXLTokens::GetDXLTokenStr(EdxltokenPhysicalSplit);
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLPhysicalSplit::SerializeToDXL
/
/ @doc:
/ Serialize function descriptor in DXL format
/
/---------------------------------------------------------------------------
void
CDXLPhysicalSplit::SerializeToDXL(CXMLSerializer *xml_serializer,
const CDXLNode *dxlnode) const
{
const CWStringConst *element_name = GetOpNameStr();
xml_serializer->OpenElement(
CDXLTokens::GetDXLTokenStr(EdxltokenNamespacePrefix), element_name);
CWStringDynamic *delete_cols =
CDXLUtils::Serialize(m_mp, m_deletion_colid_array);
xml_serializer->AddAttribute(
CDXLTokens::GetDXLTokenStr(EdxltokenDeleteCols), delete_cols);
GPOS_DELETE(delete_cols);
CWStringDynamic *insert_cols =
CDXLUtils::Serialize(m_mp, m_insert_colid_array);
xml_serializer->AddAttribute(
CDXLTokens::GetDXLTokenStr(EdxltokenInsertCols), insert_cols);
GPOS_DELETE(insert_cols);
xml_serializer->AddAttribute(
CDXLTokens::GetDXLTokenStr(EdxltokenActionColId), m_action_colid);
xml_serializer->AddAttribute(CDXLTokens::GetDXLTokenStr(EdxltokenCtidColId),
m_ctid_colid);
xml_serializer->AddAttribute(
CDXLTokens::GetDXLTokenStr(EdxltokenGpSegmentIdColId), m_segid_colid);
dxlnode->SerializePropertiesToDXL(xml_serializer);
/ serialize project list
(*dxlnode)[0]->SerializeToDXL(xml_serializer);
/ serialize physical child
(*dxlnode)[1]->SerializeToDXL(xml_serializer);
xml_serializer->CloseElement(
CDXLTokens::GetDXLTokenStr(EdxltokenNamespacePrefix), element_name);
}
#ifdef GPOS_DEBUG
/---------------------------------------------------------------------------
/ @function:
/ CDXLPhysicalSplit::AssertValid
/
/ @doc:
/ Checks whether operator node is well-structured
/
/---------------------------------------------------------------------------
void
CDXLPhysicalSplit::AssertValid(const CDXLNode *dxlnode,
BOOL validate_children) const
{
GPOS_ASSERT(2 == dxlnode->Arity());
CDXLNode *child_dxlnode = (*dxlnode)[1];
GPOS_ASSERT(EdxloptypePhysical ==
child_dxlnode->GetOperator()->GetDXLOperatorType());
if (validate_children)
{
child_dxlnode->GetOperator()->AssertValid(child_dxlnode,
validate_children);
}
}
#endif / GPOS_DEBUG
/ EOF
相关信息
相关文章
greenplumn CDXLCtasStorageOptions 源码