greenplumn CParseHandlerCTEConfig 代码
文件路径：/src/backend/gporca/libnaucrates/src/parser/CParseHandlerCTEConfig.cpp
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2013 EMC Corp.
/
/ @filename:
/ CParseHandlerCTEConfig.cpp
/
/ @doc:
/ Implementation of the SAX parse handler class for parsing CTE
/ configuration
/---------------------------------------------------------------------------
#include "naucrates/dxl/parser/CParseHandlerCTEConfig.h"
#include "gpopt/engine/CCTEConfig.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:
/ CParseHandlerCTEConfig::CParseHandlerCTEConfig
/
/ @doc:
/ Ctor
/
/---------------------------------------------------------------------------
CParseHandlerCTEConfig::CParseHandlerCTEConfig(
CMemoryPool *mp, CParseHandlerManager *parse_handler_mgr,
CParseHandlerBase *parse_handler_root)
: CParseHandlerBase(mp, parse_handler_mgr, parse_handler_root),
m_cte_conf(nullptr)
{
}
/---------------------------------------------------------------------------
/ @function:
/ CParseHandlerCTEConfig::~CParseHandlerCTEConfig
/
/ @doc:
/ Dtor
/
/---------------------------------------------------------------------------
CParseHandlerCTEConfig::~CParseHandlerCTEConfig()
{
CRefCount::SafeRelease(m_cte_conf);
}
/---------------------------------------------------------------------------
/ @function:
/ CParseHandlerCTEConfig::StartElement
/
/ @doc:
/ Invoked by Xerces to process an opening tag
/
/---------------------------------------------------------------------------
void
CParseHandlerCTEConfig::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(EdxltokenCTEConfig),
element_local_name))
{
CWStringDynamic *str = CDXLUtils::CreateDynamicStringFromXMLChArray(
m_parse_handler_mgr->GetDXLMemoryManager(), element_local_name);
GPOS_RAISE(gpdxl::ExmaDXL, gpdxl::ExmiDXLUnexpectedTag,
str->GetBuffer());
}
/ parse CTE configuration options
ULONG cte_inlining_cut_off =
CDXLOperatorFactory::ExtractConvertAttrValueToUlong(
m_parse_handler_mgr->GetDXLMemoryManager(), attrs,
EdxltokenCTEInliningCutoff, EdxltokenCTEConfig);
m_cte_conf = GPOS_NEW(m_mp) CCTEConfig(cte_inlining_cut_off);
}
/---------------------------------------------------------------------------
/ @function:
/ CParseHandlerCTEConfig::EndElement
/
/ @doc:
/ Invoked by Xerces to process a closing tag
/
/---------------------------------------------------------------------------
void
CParseHandlerCTEConfig::EndElement(const XMLCh *const, / element_uri,
const XMLCh *const element_local_name,
const XMLCh *const / element_qname
)
{
if (0 !=
XMLString::compareString(CDXLTokens::XmlstrToken(EdxltokenCTEConfig),
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_cte_conf);
GPOS_ASSERT(0 == this->Length());
/ deactivate handler
m_parse_handler_mgr->DeactivateHandler();
}
/---------------------------------------------------------------------------
/ @function:
/ CParseHandlerCTEConfig::GetParseHandlerType
/
/ @doc:
/ Return the type of the parse handler.
/
/---------------------------------------------------------------------------
EDxlParseHandlerType
CParseHandlerCTEConfig::GetParseHandlerType() const
{
return EdxlphCTEConfig;
}
/---------------------------------------------------------------------------
/ @function:
/ CParseHandlerCTEConfig::GetCteConf
/
/ @doc:
/ Returns the CTE configuration
/
/---------------------------------------------------------------------------
CCTEConfig *
CParseHandlerCTEConfig::GetCteConf() const
{
return m_cte_conf;
}
/ EOF
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