greenplumn CParseHandlerPhysicalCTEProducer 代码
文件路径：/src/backend/gporca/libnaucrates/src/parser/CParseHandlerPhysicalCTEProducer.cpp
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2012 EMC Corp.
/
/ @filename:
/ CParseHandlerPhysicalCTEProducer.cpp
/
/ @doc:
/ Implementation of the SAX parse handler class for parsing CTE producer
/ operators
/---------------------------------------------------------------------------
#include "naucrates/dxl/parser/CParseHandlerPhysicalCTEProducer.h"
#include "naucrates/dxl/operators/CDXLOperatorFactory.h"
#include "naucrates/dxl/operators/CDXLPhysicalCTEProducer.h"
#include "naucrates/dxl/parser/CParseHandlerFactory.h"
#include "naucrates/dxl/parser/CParseHandlerProjList.h"
#include "naucrates/dxl/parser/CParseHandlerProperties.h"
#include "naucrates/dxl/parser/CParseHandlerUtils.h"
using namespace gpdxl;
XERCES_CPP_NAMESPACE_USE
/---------------------------------------------------------------------------
/ @function:
/ CParseHandlerPhysicalCTEProducer::CParseHandlerPhysicalCTEProducer
/
/ @doc:
/ Ctor
/
/---------------------------------------------------------------------------
CParseHandlerPhysicalCTEProducer::CParseHandlerPhysicalCTEProducer(
CMemoryPool *mp, CParseHandlerManager *parse_handler_mgr,
CParseHandlerBase *parse_handler_root)
: CParseHandlerPhysicalOp(mp, parse_handler_mgr, parse_handler_root)
{
}
/---------------------------------------------------------------------------
/ @function:
/ CParseHandlerPhysicalCTEProducer::StartElement
/
/ @doc:
/ Invoked by Xerces to process an opening tag
/
/---------------------------------------------------------------------------
void
CParseHandlerPhysicalCTEProducer::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(EdxltokenPhysicalCTEProducer),
element_local_name))
{
CWStringDynamic *str = CDXLUtils::CreateDynamicStringFromXMLChArray(
m_parse_handler_mgr->GetDXLMemoryManager(), element_local_name);
GPOS_RAISE(gpdxl::ExmaDXL, gpdxl::ExmiDXLUnexpectedTag,
str->GetBuffer());
}
/ parse cteid and create cte operator
ULONG id = CDXLOperatorFactory::ExtractConvertAttrValueToUlong(
m_parse_handler_mgr->GetDXLMemoryManager(), attrs, EdxltokenCTEId,
EdxltokenPhysicalCTEProducer);
ULongPtrArray *output_colids_array =
CDXLOperatorFactory::ExtractConvertValuesToArray(
m_parse_handler_mgr->GetDXLMemoryManager(), attrs, EdxltokenColumns,
EdxltokenPhysicalCTEProducer);
m_dxl_node = GPOS_NEW(m_mp) CDXLNode(
m_mp,
GPOS_NEW(m_mp) CDXLPhysicalCTEProducer(m_mp, id, output_colids_array));
/ create and activate the parse handler for the child expression node
CParseHandlerBase *child_parse_handler =
CParseHandlerFactory::GetParseHandler(
m_mp, CDXLTokens::XmlstrToken(EdxltokenPhysical),
m_parse_handler_mgr, this);
m_parse_handler_mgr->ActivateParseHandler(child_parse_handler);
/ parse handler for the proj list
CParseHandlerBase *proj_list_parse_handler =
CParseHandlerFactory::GetParseHandler(
m_mp, CDXLTokens::XmlstrToken(EdxltokenScalarProjList),
m_parse_handler_mgr, this);
m_parse_handler_mgr->ActivateParseHandler(proj_list_parse_handler);
/parse handler for the properties of the operator
CParseHandlerBase *prop_parse_handler =
CParseHandlerFactory::GetParseHandler(
m_mp, CDXLTokens::XmlstrToken(EdxltokenProperties),
m_parse_handler_mgr, this);
m_parse_handler_mgr->ActivateParseHandler(prop_parse_handler);
/ store parse handler
this->Append(prop_parse_handler);
this->Append(proj_list_parse_handler);
this->Append(child_parse_handler);
}
/---------------------------------------------------------------------------
/ @function:
/ CParseHandlerPhysicalCTEProducer::EndElement
/
/ @doc:
/ Invoked by Xerces to process a closing tag
/
/---------------------------------------------------------------------------
void
CParseHandlerPhysicalCTEProducer::EndElement(
const XMLCh *const, / element_uri,
const XMLCh *const element_local_name,
const XMLCh *const / element_qname
)
{
if (0 != XMLString::compareString(
CDXLTokens::XmlstrToken(EdxltokenPhysicalCTEProducer),
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);
CParseHandlerProperties *prop_parse_handler =
dynamic_cast<CParseHandlerProperties *>((*this)[0]);
CParseHandlerProjList *proj_list_parse_handler =
dynamic_cast<CParseHandlerProjList *>((*this)[1]);
CParseHandlerPhysicalOp *child_parse_handler =
dynamic_cast<CParseHandlerPhysicalOp *>((*this)[2]);
/ set physical properties
CParseHandlerUtils::SetProperties(m_dxl_node, prop_parse_handler);
/ add constructed children
AddChildFromParseHandler(proj_list_parse_handler);
AddChildFromParseHandler(child_parse_handler);
#ifdef GPOS_DEBUG
m_dxl_node->GetOperator()->AssertValid(m_dxl_node,
false /* validate_children */);
#endif / GPOS_DEBUG
m_parse_handler_mgr->DeactivateHandler();
}
/ EOF
相关信息
相关文章
greenplumn CParseHandlerAgg 源码
greenplumn CParseHandlerAppend 源码
greenplumn CParseHandlerArray 源码
greenplumn CParseHandlerAssert 源码
greenplumn CParseHandlerBase 源码
greenplumn CParseHandlerBroadcastMotion 源码
greenplumn CParseHandlerCTEConfig 源码
greenplumn CParseHandlerCTEList 源码