greenplumn CDXLScalarHashCondList 代码
文件路径：/src/backend/gporca/libnaucrates/src/operators/CDXLScalarHashCondList.cpp
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2010 Greenplum, Inc.
/
/ @filename:
/ CDXLScalarHashCondList.cpp
/
/ @doc:
/ Implementation of DXL hash condition lists for hash join operators
/---------------------------------------------------------------------------
#include "naucrates/dxl/operators/CDXLScalarHashCondList.h"
#include "naucrates/dxl/operators/CDXLNode.h"
#include "naucrates/dxl/xml/CXMLSerializer.h"
using namespace gpos;
using namespace gpdxl;
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarHashCondList::CDXLScalarHashCondList
/
/ @doc:
/ Constructor
/
/---------------------------------------------------------------------------
CDXLScalarHashCondList::CDXLScalarHashCondList(CMemoryPool *mp) : CDXLScalar(mp)
{
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarHashCondList::GetDXLOperator
/
/ @doc:
/ Operator type
/
/---------------------------------------------------------------------------
Edxlopid
CDXLScalarHashCondList::GetDXLOperator() const
{
return EdxlopScalarHashCondList;
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarHashCondList::GetOpNameStr
/
/ @doc:
/ Operator name
/
/---------------------------------------------------------------------------
const CWStringConst *
CDXLScalarHashCondList::GetOpNameStr() const
{
return CDXLTokens::GetDXLTokenStr(EdxltokenScalarHashCondList);
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarHashCondList::SerializeToDXL
/
/ @doc:
/ Serialize operator in DXL format
/
/---------------------------------------------------------------------------
void
CDXLScalarHashCondList::SerializeToDXL(CXMLSerializer *xml_serializer,
const CDXLNode *node) const
{
const CWStringConst *element_name = GetOpNameStr();
xml_serializer->OpenElement(
CDXLTokens::GetDXLTokenStr(EdxltokenNamespacePrefix), element_name);
node->SerializeChildrenToDXL(xml_serializer);
xml_serializer->CloseElement(
CDXLTokens::GetDXLTokenStr(EdxltokenNamespacePrefix), element_name);
}
#ifdef GPOS_DEBUG
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarHashCondList::AssertValid
/
/ @doc:
/ Checks whether operator node is well-structured
/
/---------------------------------------------------------------------------
void
CDXLScalarHashCondList::AssertValid(const CDXLNode *node,
BOOL validate_children) const
{
GPOS_ASSERT(nullptr != node);
const ULONG arity = node->Arity();
for (ULONG ul = 0; ul < arity; ul++)
{
CDXLNode *child_dxlnode = (*node)[ul];
GPOS_ASSERT(EdxloptypeScalar ==
child_dxlnode->GetOperator()->GetDXLOperatorType());
if (validate_children)
{
child_dxlnode->GetOperator()->AssertValid(child_dxlnode,
validate_children);
}
}
}
#endif / GPOS_DEBUG
/ EOF
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