greenplumn CParseHandlerCostParam 代码
文件路径：/src/backend/gporca/libnaucrates/src/parser/CParseHandlerCostParam.cpp
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2013 EMC Corp.
/
/ @filename:
/ CParseHandlerCostParam
/
/ @doc:
/ Implementation of the SAX parse handler class for parsing xform
/---------------------------------------------------------------------------
#include "naucrates/dxl/parser/CParseHandlerCostParam.h"
#include "naucrates/dxl/operators/CDXLOperatorFactory.h"
#include "naucrates/dxl/parser/CParseHandlerFactory.h"
#include "naucrates/dxl/parser/CParseHandlerManager.h"
using namespace gpdxl;
using namespace gpopt;
XERCES_CPP_NAMESPACE_USE
/---------------------------------------------------------------------------
/ @function:
/ CParseHandlerCostParam::CParseHandlerCostParam
/
/ @doc:
/ Ctor
/
/---------------------------------------------------------------------------
CParseHandlerCostParam::CParseHandlerCostParam(
CMemoryPool *mp, CParseHandlerManager *parse_handler_mgr,
CParseHandlerBase *parse_handler_root)
: CParseHandlerBase(mp, parse_handler_mgr, parse_handler_root),
m_param_name(nullptr),
m_value(0),
m_lower_bound_val(0),
m_upper_bound_val(0)
{
}
/---------------------------------------------------------------------------
/ @function:
/ CParseHandlerCostParam::~CParseHandlerCostParam
/
/ @doc:
/ Dtor
/
/---------------------------------------------------------------------------
CParseHandlerCostParam::~CParseHandlerCostParam()
{
GPOS_DELETE_ARRAY(m_param_name);
}
/---------------------------------------------------------------------------
/ @function:
/ CParseHandlerCostParam::StartElement
/
/ @doc:
/ Invoked by Xerces to process an opening tag
/
/---------------------------------------------------------------------------
void
CParseHandlerCostParam::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(EdxltokenCostParam),
element_local_name))
{
CWStringDynamic *str = CDXLUtils::CreateDynamicStringFromXMLChArray(
m_parse_handler_mgr->GetDXLMemoryManager(), element_local_name);
GPOS_RAISE(gpdxl::ExmaDXL, gpdxl::ExmiDXLUnexpectedTag,
str->GetBuffer());
}
const XMLCh *xmlstrName = CDXLOperatorFactory::ExtractAttrValue(
attrs, EdxltokenName, EdxltokenCostParam);
CWStringDynamic *str_name = CDXLUtils::CreateDynamicStringFromXMLChArray(
m_parse_handler_mgr->GetDXLMemoryManager(), xmlstrName);
m_param_name = CDXLUtils::CreateMultiByteCharStringFromWCString(
m_mp, str_name->GetBuffer());
GPOS_DELETE(str_name);
m_value = CDXLOperatorFactory::ExtractConvertAttrValueToDouble(
m_parse_handler_mgr->GetDXLMemoryManager(), attrs, EdxltokenValue,
EdxltokenCostParam);
m_lower_bound_val = CDXLOperatorFactory::ExtractConvertAttrValueToDouble(
m_parse_handler_mgr->GetDXLMemoryManager(), attrs,
EdxltokenCostParamLowerBound, EdxltokenCostParam);
m_upper_bound_val = CDXLOperatorFactory::ExtractConvertAttrValueToDouble(
m_parse_handler_mgr->GetDXLMemoryManager(), attrs,
EdxltokenCostParamUpperBound, EdxltokenCostParam);
}
/---------------------------------------------------------------------------
/ @function:
/ CParseHandlerCostParam::EndElement
/
/ @doc:
/ Invoked by Xerces to process a closing tag
/
/---------------------------------------------------------------------------
void
CParseHandlerCostParam::EndElement(const XMLCh *const, / element_uri,
const XMLCh *const element_local_name,
const XMLCh *const / element_qname
)
{
if (0 !=
XMLString::compareString(CDXLTokens::XmlstrToken(EdxltokenCostParam),
element_local_name))
{
CWStringDynamic *str = CDXLUtils::CreateDynamicStringFromXMLChArray(
m_parse_handler_mgr->GetDXLMemoryManager(), element_local_name);
GPOS_RAISE(gpdxl::ExmaDXL, gpdxl::ExmiDXLUnexpectedTag,
str->GetBuffer());
}
/ deactivate handler
m_parse_handler_mgr->DeactivateHandler();
}
/ EOF
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