greenplumn CDXLScalarOpList 代码
文件路径：/src/backend/gporca/libnaucrates/src/operators/CDXLScalarOpList.cpp
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2014 VMware, Inc. or its affiliates.
/
/ @filename:
/ CDXLScalarOpList.cpp
/
/ @doc:
/ Implementation of DXL list of scalar expressions
/---------------------------------------------------------------------------
#include "naucrates/dxl/operators/CDXLScalarOpList.h"
#include "gpopt/mdcache/CMDAccessor.h"
#include "naucrates/dxl/operators/CDXLNode.h"
#include "naucrates/dxl/xml/CXMLSerializer.h"
using namespace gpos;
using namespace gpdxl;
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarOpList::CDXLScalarOpList
/
/ @doc:
/ Ctor
/
/---------------------------------------------------------------------------
CDXLScalarOpList::CDXLScalarOpList(CMemoryPool *mp,
EdxlOpListType dxl_op_list_type)
: CDXLScalar(mp), m_dxl_op_list_type(dxl_op_list_type)
{
GPOS_ASSERT(EdxloplistSentinel > dxl_op_list_type);
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarOpList::GetDXLOperator
/
/ @doc:
/ Operator type
/
/---------------------------------------------------------------------------
Edxlopid
CDXLScalarOpList::GetDXLOperator() const
{
return EdxlopScalarOpList;
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarOpList::GetOpNameStr
/
/ @doc:
/ Operator name
/
/---------------------------------------------------------------------------
const CWStringConst *
CDXLScalarOpList::GetOpNameStr() const
{
Edxltoken dxl_token = EdxltokenSentinel;
switch (m_dxl_op_list_type)
{
case EdxloplistEqFilterList:
dxl_token = EdxltokenPartLevelEqFilterList;
break;
case EdxloplistFilterList:
dxl_token = EdxltokenPartLevelFilterList;
break;
case EdxloplistGeneral:
dxl_token = EdxltokenScalarOpList;
break;
default:
GPOS_ASSERT(!"Invalid op list type");
break;
}
return CDXLTokens::GetDXLTokenStr(dxl_token);
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarOpList::SerializeToDXL
/
/ @doc:
/ Serialize operator in DXL format
/
/---------------------------------------------------------------------------
void
CDXLScalarOpList::SerializeToDXL(CXMLSerializer *xml_serializer,
const CDXLNode *dxlnode) const
{
const CWStringConst *element_name = GetOpNameStr();
xml_serializer->OpenElement(
CDXLTokens::GetDXLTokenStr(EdxltokenNamespacePrefix), element_name);
dxlnode->SerializeChildrenToDXL(xml_serializer);
xml_serializer->CloseElement(
CDXLTokens::GetDXLTokenStr(EdxltokenNamespacePrefix), element_name);
}
#ifdef GPOS_DEBUG
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarOpList::AssertValid
/
/ @doc:
/ Checks whether operator node is well-structured
/
/---------------------------------------------------------------------------
void
CDXLScalarOpList::AssertValid(const CDXLNode *dxlnode,
BOOL validate_children) const
{
const ULONG arity = dxlnode->Arity();
for (ULONG idx = 0; idx < arity; ++idx)
{
CDXLNode *child_dxlnode = (*dxlnode)[idx];
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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