greenplumn CDXLScalarPartOid 代码
文件路径：/src/backend/gporca/libnaucrates/src/operators/CDXLScalarPartOid.cpp
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2014 VMware, Inc. or its affiliates.
/
/ @filename:
/ CDXLScalarPartOid.cpp
/
/ @doc:
/ Implementation of DXL Part oid expression
/---------------------------------------------------------------------------
#include "naucrates/dxl/operators/CDXLScalarPartOid.h"
#include "gpopt/mdcache/CMDAccessor.h"
#include "naucrates/dxl/operators/CDXLNode.h"
#include "naucrates/dxl/xml/CXMLSerializer.h"
using namespace gpopt;
using namespace gpmd;
using namespace gpos;
using namespace gpdxl;
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarPartOid::CDXLScalarPartOid
/
/ @doc:
/ Ctor
/
/---------------------------------------------------------------------------
CDXLScalarPartOid::CDXLScalarPartOid(CMemoryPool *mp, ULONG partitioning_level)
: CDXLScalar(mp), m_partitioning_level(partitioning_level)
{
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarPartOid::GetDXLOperator
/
/ @doc:
/ Operator type
/
/---------------------------------------------------------------------------
Edxlopid
CDXLScalarPartOid::GetDXLOperator() const
{
return EdxlopScalarPartOid;
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarPartOid::GetOpNameStr
/
/ @doc:
/ Operator name
/
/---------------------------------------------------------------------------
const CWStringConst *
CDXLScalarPartOid::GetOpNameStr() const
{
return CDXLTokens::GetDXLTokenStr(EdxltokenScalarPartOid);
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarPartOid::SerializeToDXL
/
/ @doc:
/ Serialize operator in DXL format
/
/---------------------------------------------------------------------------
void
CDXLScalarPartOid::SerializeToDXL(CXMLSerializer *xml_serializer,
const CDXLNode * / dxlnode
) const
{
const CWStringConst *element_name = GetOpNameStr();
xml_serializer->OpenElement(
CDXLTokens::GetDXLTokenStr(EdxltokenNamespacePrefix), element_name);
xml_serializer->AddAttribute(CDXLTokens::GetDXLTokenStr(EdxltokenPartLevel),
m_partitioning_level);
xml_serializer->CloseElement(
CDXLTokens::GetDXLTokenStr(EdxltokenNamespacePrefix), element_name);
}
#ifdef GPOS_DEBUG
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarPartOid::AssertValid
/
/ @doc:
/ Checks whether operator node is well-structured
/
/---------------------------------------------------------------------------
void
CDXLScalarPartOid::AssertValid(const CDXLNode *dxlnode,
BOOL / validate_children
) const
{
GPOS_ASSERT(0 == dxlnode->Arity());
}
#endif / GPOS_DEBUG
/ EOF
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