greenplumn CParseHandlerScalarPartListValues 源码
greenplumn CParseHandlerScalarPartListValues 代码
文件路径：/src/backend/gporca/libnaucrates/src/parser/CParseHandlerScalarPartListValues.cpp
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2017 VMware, Inc. or its affiliates.
//
// Implementation of the SAX parse handler class for parsing part list
// values
//---------------------------------------------------------------------------
#include "naucrates/dxl/parser/CParseHandlerScalarPartListValues.h"
#include "naucrates/dxl/operators/CDXLOperatorFactory.h"
#include "naucrates/dxl/operators/CDXLScalarPartListValues.h"
#include "naucrates/dxl/parser/CParseHandlerFactory.h"
#include "naucrates/dxl/parser/CParseHandlerScalarOp.h"
using namespace gpdxl;
XERCES_CPP_NAMESPACE_USE
// Ctor
CParseHandlerScalarPartListValues::CParseHandlerScalarPartListValues(
CMemoryPool *mp, CParseHandlerManager *parse_handler_mgr,
CParseHandlerBase *parse_handler_root)
: CParseHandlerScalarOp(mp, parse_handler_mgr, parse_handler_root)
{
}
// Invoked by Xerces to process an opening tag
void
CParseHandlerScalarPartListValues::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(EdxltokenScalarPartListValues),
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,
EdxltokenScalarPartListValues);
IMDId *mdid_result = CDXLOperatorFactory::ExtractConvertAttrValueToMdId(
m_parse_handler_mgr->GetDXLMemoryManager(), attrs,
EdxltokenGPDBScalarOpResultTypeId, EdxltokenScalarPartListValues);
IMDId *mdid_element = CDXLOperatorFactory::ExtractConvertAttrValueToMdId(
m_parse_handler_mgr->GetDXLMemoryManager(), attrs,
EdxltokenArrayElementType, EdxltokenScalarPartListValues);
m_dxl_node = GPOS_NEW(m_mp)
CDXLNode(m_mp, GPOS_NEW(m_mp) CDXLScalarPartListValues(
m_mp, partition_level, mdid_result, mdid_element));
}
// Invoked by Xerces to process a closing tag
void
CParseHandlerScalarPartListValues::EndElement(
const XMLCh *const, // element_uri,
const XMLCh *const element_local_name,
const XMLCh *const // element_qname
)
{
if (0 != XMLString::compareString(
CDXLTokens::XmlstrToken(EdxltokenScalarPartListValues),
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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