greenplumn CParseHandlerScalarPartBound 源码
greenplumn CParseHandlerScalarPartBound 代码
文件路径:/src/backend/gporca/libnaucrates/src/parser/CParseHandlerScalarPartBound.cpp
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2014 VMware, Inc. or its affiliates.
//
// @filename:
// CParseHandlerScalarPartBound.cpp
//
// @doc:
// Implementation of the SAX parse handler class for parsing part bound
//---------------------------------------------------------------------------
#include "naucrates/dxl/parser/CParseHandlerScalarPartBound.h"
#include "naucrates/dxl/operators/CDXLOperatorFactory.h"
#include "naucrates/dxl/operators/CDXLScalarPartBound.h"
#include "naucrates/dxl/parser/CParseHandlerFactory.h"
#include "naucrates/dxl/parser/CParseHandlerScalarOp.h"
using namespace gpdxl;
XERCES_CPP_NAMESPACE_USE
//---------------------------------------------------------------------------
// @function:
// CParseHandlerScalarPartBound::CParseHandlerScalarPartBound
//
// @doc:
// Ctor
//
//---------------------------------------------------------------------------
CParseHandlerScalarPartBound::CParseHandlerScalarPartBound(
CMemoryPool *mp, CParseHandlerManager *parse_handler_mgr,
CParseHandlerBase *parse_handler_root)
: CParseHandlerScalarOp(mp, parse_handler_mgr, parse_handler_root)
{
}
//---------------------------------------------------------------------------
// @function:
// CParseHandlerScalarPartBound::StartElement
//
// @doc:
// Invoked by Xerces to process an opening tag
//
//---------------------------------------------------------------------------
void
CParseHandlerScalarPartBound::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(EdxltokenScalarPartBound),
element_local_name))
{
CWStringDynamic *str = CDXLUtils::CreateDynamicStringFromXMLChArray(
m_parse_handler_mgr->GetDXLMemoryManager(), element_local_name);
GPOS_RAISE(gpdxl::ExmaDXL, gpdxl::ExmiDXLUnexpectedTag,
str->GetBuffer());
}
ULONG partition_level = CDXLOperatorFactory::ExtractConvertAttrValueToUlong(
m_parse_handler_mgr->GetDXLMemoryManager(), attrs, EdxltokenPartLevel,
EdxltokenScalarPartBound);
IMDId *m_mdid_type = CDXLOperatorFactory::ExtractConvertAttrValueToMdId(
m_parse_handler_mgr->GetDXLMemoryManager(), attrs, EdxltokenMDType,
EdxltokenScalarPartBound);
BOOL is_lower_bound = CDXLOperatorFactory::ExtractConvertAttrValueToBool(
m_parse_handler_mgr->GetDXLMemoryManager(), attrs,
EdxltokenScalarPartBoundLower, EdxltokenScalarPartBound);
m_dxl_node = GPOS_NEW(m_mp)
CDXLNode(m_mp, GPOS_NEW(m_mp) CDXLScalarPartBound(
m_mp, partition_level, m_mdid_type, is_lower_bound));
}
//---------------------------------------------------------------------------
// @function:
// CParseHandlerScalarPartBound::EndElement
//
// @doc:
// Invoked by Xerces to process a closing tag
//
//---------------------------------------------------------------------------
void
CParseHandlerScalarPartBound::EndElement(const XMLCh *const, // element_uri,
const XMLCh *const element_local_name,
const XMLCh *const // element_qname
)
{
if (0 != XMLString::compareString(
CDXLTokens::XmlstrToken(EdxltokenScalarPartBound),
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_dxl_node);
// deactivate handler
m_parse_handler_mgr->DeactivateHandler();
}
// EOF
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