greenplumn CDXLScalarFilter 源码
greenplumn CDXLScalarFilter 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/operators/CDXLScalarFilter.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2010 Greenplum, Inc.
//
// @filename:
// CDXLScalarFilter.h
//
// @doc:
// Class for representing a scalar filter node inside DXL physical operators.
//---------------------------------------------------------------------------
#ifndef GPDXL_CDXLScalarFilter_H
#define GPDXL_CDXLScalarFilter_H
#include "gpos/base.h"
#include "naucrates/dxl/operators/CDXLScalar.h"
namespace gpdxl
{
//---------------------------------------------------------------------------
// @class:
// CDXLScalarFilter
//
// @doc:
// Class for representing DXL filter operators
//
//---------------------------------------------------------------------------
class CDXLScalarFilter : public CDXLScalar
{
private:
public:
CDXLScalarFilter(CDXLScalarFilter &) = delete;
// ctor/dtor
explicit CDXLScalarFilter(CMemoryPool *mp);
// accessors
Edxlopid GetDXLOperator() const override;
const CWStringConst *GetOpNameStr() const override;
// serialize operator in DXL format
void SerializeToDXL(CXMLSerializer *xml_serializer,
const CDXLNode *node) const override;
// conversion function
static CDXLScalarFilter *
Cast(CDXLOperator *dxl_op)
{
GPOS_ASSERT(nullptr != dxl_op);
GPOS_ASSERT(EdxlopScalarFilter == dxl_op->GetDXLOperator());
return dynamic_cast<CDXLScalarFilter *>(dxl_op);
}
// does the operator return a boolean result
BOOL
HasBoolResult(CMDAccessor * //md_accessor
) const override
{
GPOS_ASSERT(!"Invalid function call for a container operator");
return false;
}
#ifdef GPOS_DEBUG
// checks whether the operator has valid structure
void AssertValid(const CDXLNode *node,
BOOL validate_children) const override;
#endif // GPOS_DEBUG
};
} // namespace gpdxl
#endif // !GPDXL_CDXLScalarFilter_H
// EOF
相关信息
相关文章
greenplumn CDXLCtasStorageOptions 源码
0
赞
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
7、 golang
-
9、 openharmony