greenplumn CDXLScalarBitmapIndexProbe 代码
文件路径：/src/backend/gporca/libnaucrates/src/operators/CDXLScalarBitmapIndexProbe.cpp
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2014 VMware, Inc. or its affiliates.
/
/ @filename:
/ CDXLScalarBitmapIndexProbe.cpp
/
/ @doc:
/ Class for representing DXL bitmap index probe operators
/---------------------------------------------------------------------------
#include "naucrates/dxl/operators/CDXLScalarBitmapIndexProbe.h"
#include "naucrates/dxl/operators/CDXLIndexDescr.h"
#include "naucrates/dxl/operators/CDXLNode.h"
#include "naucrates/dxl/operators/CDXLTableDescr.h"
#include "naucrates/dxl/xml/CXMLSerializer.h"
#include "naucrates/dxl/xml/dxltokens.h"
using namespace gpdxl;
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarBitmapIndexProbe::CDXLScalarBitmapIndexProbe
/
/ @doc:
/ Ctor
/
/---------------------------------------------------------------------------
CDXLScalarBitmapIndexProbe::CDXLScalarBitmapIndexProbe(
CMemoryPool *mp, CDXLIndexDescr *dxl_index_descr)
: CDXLScalar(mp), m_dxl_index_descr(dxl_index_descr)
{
GPOS_ASSERT(nullptr != m_dxl_index_descr);
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarBitmapIndexProbe::~CDXLScalarBitmapIndexProbe
/
/ @doc:
/ Dtor
/
/---------------------------------------------------------------------------
CDXLScalarBitmapIndexProbe::~CDXLScalarBitmapIndexProbe()
{
m_dxl_index_descr->Release();
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarBitmapIndexProbe::GetOpNameStr
/
/ @doc:
/ Operator name
/
/---------------------------------------------------------------------------
const CWStringConst *
CDXLScalarBitmapIndexProbe::GetOpNameStr() const
{
return CDXLTokens::GetDXLTokenStr(EdxltokenScalarBitmapIndexProbe);
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarBitmapIndexProbe::SerializeToDXL
/
/ @doc:
/ Serialize operator in DXL format
/
/---------------------------------------------------------------------------
void
CDXLScalarBitmapIndexProbe::SerializeToDXL(CXMLSerializer *xml_serializer,
const CDXLNode *dxlnode) const
{
const CWStringConst *element_name = GetOpNameStr();
xml_serializer->OpenElement(
CDXLTokens::GetDXLTokenStr(EdxltokenNamespacePrefix), element_name);
/ serialize children
dxlnode->SerializeChildrenToDXL(xml_serializer);
/ serialize index descriptor
m_dxl_index_descr->SerializeToDXL(xml_serializer);
xml_serializer->CloseElement(
CDXLTokens::GetDXLTokenStr(EdxltokenNamespacePrefix), element_name);
}
#ifdef GPOS_DEBUG
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarBitmapIndexProbe::AssertValid
/
/ @doc:
/ Checks whether operator node is well-structured
/
/---------------------------------------------------------------------------
void
CDXLScalarBitmapIndexProbe::AssertValid(const CDXLNode *dxlnode,
BOOL validate_children) const
{
/ bitmap index probe has 1 child: the index condition list
GPOS_ASSERT(1 == dxlnode->Arity());
if (validate_children)
{
CDXLNode *pdxlnIndexCondList = (*dxlnode)[0];
GPOS_ASSERT(EdxlopScalarIndexCondList ==
pdxlnIndexCondList->GetOperator()->GetDXLOperator());
pdxlnIndexCondList->GetOperator()->AssertValid(pdxlnIndexCondList,
validate_children);
}
/ assert validity of index descriptor
GPOS_ASSERT(nullptr != m_dxl_index_descr->MdName());
GPOS_ASSERT(m_dxl_index_descr->MdName()->GetMDName()->IsValid());
}
#endif / GPOS_DEBUG
/ EOF
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