greenplumn CParseHandlerStatsBound 源码
greenplumn CParseHandlerStatsBound 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/parser/CParseHandlerStatsBound.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2012 EMC Corp.
//
// @filename:
// CParseHandlerStatsBound.h
//
// @doc:
// SAX parse handler class for parsing a bounds of a bucket
//---------------------------------------------------------------------------
#ifndef GPDXL_CParseHandlerStatsBound_H
#define GPDXL_CParseHandlerStatsBound_H
#include "gpos/base.h"
#include "naucrates/dxl/operators/CDXLDatum.h"
#include "naucrates/dxl/parser/CParseHandlerBase.h"
#include "naucrates/dxl/parser/CParseHandlerScalarOp.h"
namespace gpdxl
{
using namespace gpos;
using namespace gpopt;
using namespace gpnaucrates;
XERCES_CPP_NAMESPACE_USE
//---------------------------------------------------------------------------
// @class:
// CParseHandlerStatsBound
//
// @doc:
// Parse handler for parsing the upper/lower bounds of a bucket
//
//---------------------------------------------------------------------------
class CParseHandlerStatsBound : public CParseHandlerBase
{
private:
// dxl datum representing the bound
CDXLDatum *m_dxl_datum;
// is stats bound closed
BOOL m_is_stats_bound_closed;
// process the start of an element
void StartElement(
const XMLCh *const element_uri, // URI of element's namespace
const XMLCh *const element_local_name, // local part of element's name
const XMLCh *const element_qname, // element's qname
const Attributes &attr // element's attributes
) override;
// process the end of an element
void EndElement(
const XMLCh *const element_uri, // URI of element's namespace
const XMLCh *const element_local_name, // local part of element's name
const XMLCh *const element_qname // element's qname
) override;
public:
CParseHandlerStatsBound(const CParseHandlerStatsBound &) = delete;
// ctor/dtor
CParseHandlerStatsBound(CMemoryPool *mp,
CParseHandlerManager *parse_handler_mgr,
CParseHandlerBase *parse_handler_root);
~CParseHandlerStatsBound() override;
// return the dxl datum representing the bound point
CDXLDatum *
GetDatumVal() const
{
return m_dxl_datum;
}
// is stats bound closed
BOOL
IsStatsBoundClosed() const
{
return m_is_stats_bound_closed;
}
};
} // namespace gpdxl
#endif // GPDXL_CParseHandlerStatsBound_H
// EOF
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