ora::ReadBuffer Class Reference

Public Member Functions
void *	read (int oid)
	ReadBuffer (ContainerSchema &contSchema)
const edm::TypeWithDict &	type ()
	~ReadBuffer ()

Private Attributes
std::auto_ptr< IRelationalReader >	m_reader
DataElement	m_topLevelElement
SelectOperation	m_topLevelQuery
const edm::TypeWithDict &	m_type

Detailed Description

Definition at line 144 of file DatabaseContainer.cc.

Constructor & Destructor Documentation

ora::ReadBuffer::ReadBuffer ( ContainerSchema &  contSchema )

inlineexplicit

Definition at line 146 of file DatabaseContainer.cc.

References ora::SelectOperation::addWhereId(), ora::MappingElement::columnNames(), edm::TypeWithDict::cppName(), ora::MappingElement::end(), ora::MappingElement::find(), m_reader, m_topLevelElement, m_topLevelQuery, m_type, ora::ContainerSchema::mapping(), ora::RelationalStreamerFactory::newReader(), ora::throwException(), and ora::MappingTree::topElement().

                                                        :
        m_topLevelElement(),
        m_type( contSchema.type() ),
        m_reader(),
        m_topLevelQuery( contSchema.mapping().topElement().tableName(), contSchema.storageSchema() ){

        MappingElement& topLevelMapping = contSchema.mapping().topElement();
        m_topLevelQuery.addWhereId(  topLevelMapping.columnNames()[ 0 ] );
        MappingElement::iterator iMap = topLevelMapping.find( m_type.cppName() );
        // the first inner mapping is the good one ...
        if( iMap == topLevelMapping.end()){
          throwException("Could not find a mapping element for class \""+
                         m_type.cppName()+"\"",
                         "ReadBuffer::ReadBuffer");
        }
        MappingElement& mapping = iMap->second;
        RelationalStreamerFactory streamerFactory( contSchema );
        m_reader.reset( streamerFactory.newReader( m_type, mapping )) ;
        m_reader->build( m_topLevelElement , m_topLevelQuery );
      }

ora::ReadBuffer::~ReadBuffer ( )

inline

Definition at line 167 of file DatabaseContainer.cc.

                   {
      }

Member Function Documentation

void* ora::ReadBuffer::read ( int  oid )

inline

Definition at line 170 of file DatabaseContainer.cc.

References ora::SelectOperation::clear(), ora::ClassUtils::constructObject(), roll_playback::destination, ora::SelectOperation::execute(), m_reader, m_topLevelQuery, m_type, ora::SelectOperation::nextCursorRow(), ora::throwException(), and ora::SelectOperation::whereData().

Referenced by Vispa.Plugins.EdmBrowser.EdmDataAccessor.EdmDataAccessor::goto(), and Vispa.Plugins.EdmBrowser.EdmDataAccessor.EdmDataAccessor::setFilterBranches().

                           {
        coral::AttributeList& dataBuff = m_topLevelQuery.whereData();
        dataBuff.begin()->data<int>() = oid;
        m_topLevelQuery.execute();
        m_reader->select( oid );
        void* destination = 0;
        if( m_topLevelQuery.nextCursorRow() ){
          destination = ClassUtils::constructObject( m_type );
          m_reader->read( destination );
        } else {
      throwException("Object with item id "+boost::lexical_cast<std::string>(oid)+" has not been found in the database.",
             "ReadBuffer::read");
    }
        m_reader->clear();
        m_topLevelQuery.clear();
        return destination;
      }

const edm::TypeWithDict& ora::ReadBuffer::type ( )

inline

Definition at line 188 of file DatabaseContainer.cc.

References m_type.

Referenced by cuy.ValElement::__init__(), Vispa.Plugins.ConfigEditor.ConfigDataAccessor.ConfigDataAccessor::inputCommands(), Vispa.Plugins.ConfigEditor.ConfigDataAccessor.ConfigDataAccessor::outputCommands(), Vispa.Plugins.ConfigEditor.ConfigDataAccessor.ConfigDataAccessor::outputEventContent(), and Vispa.Plugins.ConfigEditor.ConfigDataAccessor.ConfigDataAccessor::properties().

                                   {
        return m_type;
      }

Member Data Documentation

std::auto_ptr<IRelationalReader> ora::ReadBuffer::m_reader

private

Definition at line 195 of file DatabaseContainer.cc.

Referenced by read(), and ReadBuffer().

DataElement ora::ReadBuffer::m_topLevelElement

private

Definition at line 193 of file DatabaseContainer.cc.

Referenced by ReadBuffer().

SelectOperation ora::ReadBuffer::m_topLevelQuery

private

Definition at line 196 of file DatabaseContainer.cc.

Referenced by read(), and ReadBuffer().

const edm::TypeWithDict& ora::ReadBuffer::m_type

private

Definition at line 194 of file DatabaseContainer.cc.

Referenced by read(), ReadBuffer(), and type().