greenplumn CDXLPhysicalBitmapTableScan 源码

  • 2022-08-18
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greenplumn CDXLPhysicalBitmapTableScan 代码

文件路径:/src/backend/gporca/libnaucrates/src/operators/CDXLPhysicalBitmapTableScan.cpp

//---------------------------------------------------------------------------
//	Greenplum Database
//	Copyright (C) 2014 VMware, Inc. or its affiliates.
//
//	@filename:
//		CDXLPhysicalBitmapTableScan.cpp
//
//	@doc:
//		Class for representing DXL bitmap table scan operators.
//---------------------------------------------------------------------------

#include "naucrates/dxl/operators/CDXLPhysicalBitmapTableScan.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;
using namespace gpos;

//---------------------------------------------------------------------------
//	@function:
//		CDXLPhysicalBitmapTableScan::GetOpNameStr
//
//	@doc:
//		Operator name
//
//---------------------------------------------------------------------------
const CWStringConst *
CDXLPhysicalBitmapTableScan::GetOpNameStr() const
{
	return CDXLTokens::GetDXLTokenStr(EdxltokenPhysicalBitmapTableScan);
}

//---------------------------------------------------------------------------
//	@function:
//		CDXLPhysicalBitmapTableScan::SerializeToDXL
//
//	@doc:
//		Serialize operator in DXL format
//
//---------------------------------------------------------------------------
void
CDXLPhysicalBitmapTableScan::SerializeToDXL(CXMLSerializer *xml_serializer,
											const CDXLNode *dxlnode) const
{
	const CWStringConst *element_name = GetOpNameStr();

	xml_serializer->OpenElement(
		CDXLTokens::GetDXLTokenStr(EdxltokenNamespacePrefix), element_name);

	// serialize properties
	dxlnode->SerializePropertiesToDXL(xml_serializer);

	// serialize children
	dxlnode->SerializeChildrenToDXL(xml_serializer);

	// serialize table descriptor
	m_dxl_table_descr->SerializeToDXL(xml_serializer);

	xml_serializer->CloseElement(
		CDXLTokens::GetDXLTokenStr(EdxltokenNamespacePrefix), element_name);
}

// EOF

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