greenplumn CDXLLogicalExternalGet 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/operators/CDXLLogicalExternalGet.h
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2013 VMware, Inc. or its affiliates.
/
/ @filename:
/ CDXLLogicalExternalGet.h
/
/ @doc:
/ Class for representing DXL logical external get operator, for reading
/ from external tables
/---------------------------------------------------------------------------
#ifndef GPDXL_CDXLLogicalExternalGet_H
#define GPDXL_CDXLLogicalExternalGet_H
#include "gpos/base.h"
#include "naucrates/dxl/operators/CDXLLogicalGet.h"
namespace gpdxl
{
/---------------------------------------------------------------------------
/ @class:
/ CDXLLogicalExternalGet
/
/ @doc:
/ Class for representing DXL logical external get operator
/
/---------------------------------------------------------------------------
class CDXLLogicalExternalGet : public CDXLLogicalGet
{
private:
public:
CDXLLogicalExternalGet(CDXLLogicalExternalGet &) = delete;
/ ctor
CDXLLogicalExternalGet(CMemoryPool *mp, CDXLTableDescr *table_descr);
/ operator type
Edxlopid GetDXLOperator() const override;
/ operator name
const CWStringConst *GetOpNameStr() const override;
/ conversion function
static CDXLLogicalExternalGet *
Cast(CDXLOperator *dxl_op)
{
GPOS_ASSERT(nullptr != dxl_op);
GPOS_ASSERT(EdxlopLogicalExternalGet == dxl_op->GetDXLOperator());
return dynamic_cast<CDXLLogicalExternalGet *>(dxl_op);
}
};
} / namespace gpdxl
#endif / !GPDXL_CDXLLogicalExternalGet_H
/ EOF
相关信息
相关文章
greenplumn CDXLCtasStorageOptions 源码