greenplumn CParseHandlerStatisticsConfig 源码
greenplumn CParseHandlerStatisticsConfig 代码
文件路径:/src/backend/gporca/libnaucrates/src/parser/CParseHandlerStatisticsConfig.cpp
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2013 EMC Corp.
//
// @filename:
// CParseHandlerStatisticsConfig.cpp
//
// @doc:
// Implementation of the SAX parse handler class for parsing statistics
// configuration
//---------------------------------------------------------------------------
#include "naucrates/dxl/parser/CParseHandlerStatisticsConfig.h"
#include "gpopt/engine/CStatisticsConfig.h"
#include "naucrates/dxl/operators/CDXLOperatorFactory.h"
#include "naucrates/dxl/parser/CParseHandlerFactory.h"
#include "naucrates/dxl/parser/CParseHandlerManager.h"
#include "naucrates/dxl/xml/dxltokens.h"
using namespace gpdxl;
using namespace gpopt;
XERCES_CPP_NAMESPACE_USE
//---------------------------------------------------------------------------
// @function:
// CParseHandlerStatisticsConfig::CParseHandlerStatisticsConfig
//
// @doc:
// Ctor
//
//---------------------------------------------------------------------------
CParseHandlerStatisticsConfig::CParseHandlerStatisticsConfig(
CMemoryPool *mp, CParseHandlerManager *parse_handler_mgr,
CParseHandlerBase *parse_handler_root)
: CParseHandlerBase(mp, parse_handler_mgr, parse_handler_root),
m_stats_conf(nullptr)
{
}
//---------------------------------------------------------------------------
// @function:
// CParseHandlerStatisticsConfig::~CParseHandlerStatisticsConfig
//
// @doc:
// Dtor
//
//---------------------------------------------------------------------------
CParseHandlerStatisticsConfig::~CParseHandlerStatisticsConfig()
{
CRefCount::SafeRelease(m_stats_conf);
}
//---------------------------------------------------------------------------
// @function:
// CParseHandlerStatisticsConfig::StartElement
//
// @doc:
// Invoked by Xerces to process an opening tag
//
//---------------------------------------------------------------------------
void
CParseHandlerStatisticsConfig::StartElement(
const XMLCh *const, //element_uri,
const XMLCh *const element_local_name,
const XMLCh *const, //element_qname,
const Attributes &attrs)
{
if (0 != XMLString::compareString(
CDXLTokens::XmlstrToken(EdxltokenStatisticsConfig),
element_local_name))
{
CWStringDynamic *str = CDXLUtils::CreateDynamicStringFromXMLChArray(
m_parse_handler_mgr->GetDXLMemoryManager(), element_local_name);
GPOS_RAISE(gpdxl::ExmaDXL, gpdxl::ExmiDXLUnexpectedTag,
str->GetBuffer());
}
// parse statistics configuration options
CDouble damping_factor_filter =
CDXLOperatorFactory::ExtractConvertAttrValueToDouble(
m_parse_handler_mgr->GetDXLMemoryManager(), attrs,
EdxltokenDampingFactorFilter, EdxltokenStatisticsConfig);
CDouble damping_factor_join =
CDXLOperatorFactory::ExtractConvertAttrValueToDouble(
m_parse_handler_mgr->GetDXLMemoryManager(), attrs,
EdxltokenDampingFactorJoin, EdxltokenStatisticsConfig);
CDouble damping_factor_groupby =
CDXLOperatorFactory::ExtractConvertAttrValueToDouble(
m_parse_handler_mgr->GetDXLMemoryManager(), attrs,
EdxltokenDampingFactorGroupBy, EdxltokenStatisticsConfig);
ULONG max_stats_buckets =
CDXLOperatorFactory::ExtractConvertAttrValueToUlong(
m_parse_handler_mgr->GetDXLMemoryManager(), attrs,
EdxltokenMaxStatsBuckets, EdxltokenStatisticsConfig);
m_stats_conf = GPOS_NEW(m_mp)
CStatisticsConfig(m_mp, damping_factor_filter, damping_factor_join,
damping_factor_groupby, max_stats_buckets);
}
//---------------------------------------------------------------------------
// @function:
// CParseHandlerStatisticsConfig::EndElement
//
// @doc:
// Invoked by Xerces to process a closing tag
//
//---------------------------------------------------------------------------
void
CParseHandlerStatisticsConfig::EndElement(const XMLCh *const, // element_uri,
const XMLCh *const element_local_name,
const XMLCh *const // element_qname
)
{
if (0 != XMLString::compareString(
CDXLTokens::XmlstrToken(EdxltokenStatisticsConfig),
element_local_name))
{
CWStringDynamic *str = CDXLUtils::CreateDynamicStringFromXMLChArray(
m_parse_handler_mgr->GetDXLMemoryManager(), element_local_name);
GPOS_RAISE(gpdxl::ExmaDXL, gpdxl::ExmiDXLUnexpectedTag,
str->GetBuffer());
}
GPOS_ASSERT(nullptr != m_stats_conf);
GPOS_ASSERT(0 == this->Length());
// deactivate handler
m_parse_handler_mgr->DeactivateHandler();
}
//---------------------------------------------------------------------------
// @function:
// CParseHandlerStatisticsConfig::GetParseHandlerType
//
// @doc:
// Return the type of the parse handler.
//
//---------------------------------------------------------------------------
EDxlParseHandlerType
CParseHandlerStatisticsConfig::GetParseHandlerType() const
{
return EdxlphStatisticsConfig;
}
//---------------------------------------------------------------------------
// @function:
// CParseHandlerStatisticsConfig::GetStatsConf
//
// @doc:
// Returns the statistics configuration
//
//---------------------------------------------------------------------------
CStatisticsConfig *
CParseHandlerStatisticsConfig::GetStatsConf() const
{
return m_stats_conf;
}
// EOF
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