greenplumn CDXLPhysicalExternalScan 源码
greenplumn CDXLPhysicalExternalScan 代码
文件路径：/src/backend/gporca/libnaucrates/src/operators/CDXLPhysicalExternalScan.cpp
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2013 VMware, Inc. or its affiliates.
//
// @filename:
// CDXLPhysicalExternalScan.cpp
//
// @doc:
// Implementation of DXL physical external scan operator
//---------------------------------------------------------------------------
#include "naucrates/dxl/operators/CDXLPhysicalExternalScan.h"
#include "naucrates/dxl/operators/CDXLNode.h"
#include "naucrates/dxl/xml/CXMLSerializer.h"
using namespace gpos;
using namespace gpdxl;
//---------------------------------------------------------------------------
// @function:
// CDXLPhysicalExternalScan::CDXLPhysicalExternalScan
//
// @doc:
// Ctor
//
//---------------------------------------------------------------------------
CDXLPhysicalExternalScan::CDXLPhysicalExternalScan(CMemoryPool *mp)
: CDXLPhysicalTableScan(mp)
{
}
//---------------------------------------------------------------------------
// @function:
// CDXLPhysicalExternalScan::CDXLPhysicalExternalScan
//
// @doc:
// Ctor
//
//---------------------------------------------------------------------------
CDXLPhysicalExternalScan::CDXLPhysicalExternalScan(CMemoryPool *mp,
CDXLTableDescr *table_descr)
: CDXLPhysicalTableScan(mp, table_descr)
{
}
//---------------------------------------------------------------------------
// @function:
// CDXLPhysicalExternalScan::GetDXLOperator
//
// @doc:
// Operator type
//
//---------------------------------------------------------------------------
Edxlopid
CDXLPhysicalExternalScan::GetDXLOperator() const
{
return EdxlopPhysicalExternalScan;
}
//---------------------------------------------------------------------------
// @function:
// CDXLPhysicalExternalScan::GetOpNameStr
//
// @doc:
// Operator name
//
//---------------------------------------------------------------------------
const CWStringConst *
CDXLPhysicalExternalScan::GetOpNameStr() const
{
return CDXLTokens::GetDXLTokenStr(EdxltokenPhysicalExternalScan);
}
// EOF
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