#include <STLContainerStreamer.h>

Inheritance diagram for ora::STLContainerReader:

Public Member Functions
bool	build (DataElement &offset, IRelationalData &relationalData)
void	clear ()
void	read (void *address)
	Reads a data element.
void	select (int oid)
void	setRecordId (const std::vector< int > &identity)
	STLContainerReader (const Reflex::Type &objectType, MappingElement &mapping, ContainerSchema &contSchema)
	Constructor.
virtual	~STLContainerReader ()
Private Attributes
std::auto_ptr< IArrayHandler >	m_arrayHandler
bool	m_associative
std::auto_ptr< IRelationalReader >	m_dataReader
std::auto_ptr< IRelationalReader >	m_keyReader
DataElement	m_localElement
MappingElement &	m_mappingElement
Reflex::Type	m_objectType
DataElement *	m_offset
std::auto_ptr < MultiRecordSelectOperation >	m_query
std::vector< int >	m_recordId
ContainerSchema &	m_schema

Detailed Description

Definition at line 79 of file STLContainerStreamer.h.

Constructor & Destructor Documentation

ora::STLContainerReader::STLContainerReader	(	const Reflex::Type &	objectType,
		MappingElement &	mapping,
		ContainerSchema &	contSchema
	)

Constructor.

Definition at line 227 of file STLContainerStreamer.cc.

                                                                         :
  m_objectType( objectType ),
  m_mappingElement( mapping ),
  m_schema( contSchema ),
  m_recordId(),
  m_localElement(),
  m_associative( ClassUtils::isTypeAssociativeContainer( objectType ) ),
  m_offset(0 ),
  m_query(),
  m_arrayHandler(),
  m_keyReader(),
  m_dataReader(){
}

ora::STLContainerReader::~STLContainerReader ( ) [virtual]

Definition at line 243 of file STLContainerStreamer.cc.

{
}

Member Function Documentation

bool ora::STLContainerReader::build	(	DataElement &	offset,
		IRelationalData &	relationalData
	)		`[virtual]`

Implements ora::IRelationalReader.

Definition at line 246 of file STLContainerStreamer.cc.

References ora::ClassUtils::containerDataType(), ora::ClassUtils::containerKeyType(), ora::ClassUtils::containerValueType(), i, ora::ArrayHandlerFactory::newArrayHandler(), ora::RelationalStreamerFactory::newReader(), evf::evtn::offset(), ora::ClassUtils::resolvedType(), and ora::throwException().

                                                                        {
  m_localElement.clear();
  m_recordId.clear();
  // allocate for the index...
  m_recordId.push_back(0);

  RelationalStreamerFactory streamerFactory( m_schema );
  
  // first open the insert on the extra table...
  m_query.reset( new MultiRecordSelectOperation( m_mappingElement.tableName(), m_schema.storageSchema() ));

  m_query->addWhereId( m_mappingElement.pkColumn() );
  std::vector<std::string> recIdCols = m_mappingElement.recordIdColumns();
  for( size_t i=0; i<recIdCols.size(); i++ ){
    m_query->addId( recIdCols[ i ] );
    m_query->addOrderId( recIdCols[ i ] );
  }
  
  m_offset = &offset;

  m_arrayHandler.reset( ArrayHandlerFactory::newArrayHandler( m_objectType ) );

  Reflex::Type valueType;
  if ( m_associative ){

    Reflex::Type keyType = ClassUtils::containerKeyType( m_objectType );
    Reflex::Type keyResolvedType = ClassUtils::resolvedType(keyType);

    if ( ! keyType ||!keyResolvedType ) {
      throwException( "Missing dictionary information for the key type of the container \"" +
                      m_objectType.Name(Reflex::SCOPED) + "\"",
                      "STLContainerReader::build" );
    }

    std::string keyName = keyType.Name();
    // Retrieve the relevant mapping element
    MappingElement::iterator iMe = m_mappingElement.find( keyName );
    if ( iMe == m_mappingElement.end() ) {
      throwException( "Item for \"" + keyName + "\" not found in the mapping element",
                      "STLContainerReader::build" );
    }

    m_keyReader.reset( streamerFactory.newReader( keyResolvedType, iMe->second ) );
    m_keyReader->build( m_localElement, *m_query );
    
    valueType = ClassUtils::containerDataType(m_objectType);
  } else {
    valueType = ClassUtils::containerValueType(m_objectType);
  }

  Reflex::Type valueResolvedType = ClassUtils::resolvedType(valueType);
  // Check the component type
  if ( ! valueType ||!valueResolvedType ) {
    throwException( "Missing dictionary information for the content type of the container \"" +
                    m_objectType.Name(Reflex::SCOPED) + "\"",
                    "STLContainerReader::build" );
  }
  
  std::string valueName = valueType.Name();
  // Retrieve the relevant mapping element
  MappingElement::iterator iMe = m_mappingElement.find( valueName );
  if ( iMe == m_mappingElement.end() ) {
    throwException( "Item for \"" + valueName + "\" not found in the mapping element",
                    "STLContainerReader::build" );
  }

  m_dataReader.reset( streamerFactory.newReader( valueResolvedType, iMe->second ) );
  m_dataReader->build( m_localElement, *m_query );
  return true;
}

void ora::STLContainerReader::clear ( void ) [virtual]

Implements ora::IRelationalReader.

Definition at line 419 of file STLContainerStreamer.cc.

                                 {
  if(m_query.get()) m_query->clear();
  if(m_keyReader.get()) m_keyReader->clear();
  if(m_dataReader.get()) m_dataReader->clear();
}

void ora::STLContainerReader::read ( void * address ) [virtual]

Reads a data element.

Implements ora::IRelationalReader.

Definition at line 338 of file STLContainerStreamer.cc.

References i, and ora::throwException().

                                                        {

  if(!m_offset){
    throwException("The streamer has not been built.",
                   "STLContainerReader::read");
  }

  void* address = m_offset->address( destinationData );

  const Reflex::Type& iteratorReturnType = m_arrayHandler->iteratorReturnType();
  U_Primitives primitiveStub;
  
  Reflex::Type keyType;
  Reflex::Member firstMember;
  Reflex::Member secondMember;
  if ( m_associative ) {
    keyType = m_objectType.TemplateArgumentAt(0);
    firstMember = iteratorReturnType.MemberByName( "first" );
    if ( ! firstMember ) {
      throwException("Could not retrieve the data member \"first\" of the class \"" +
                     iteratorReturnType.Name(Reflex::SCOPED) + "\"",
                     "STLContainerReader::read" );
    }
    secondMember = iteratorReturnType.MemberByName( "second" );
    if ( ! secondMember ) {
      throwException( "Could not retrieve the data member \"second\" of the class \"" +
                      iteratorReturnType.Name(Reflex::SCOPED) + "\"",
                      "STLContainerReader::read" );
    }
  }
  
  bool isElementFundamental = iteratorReturnType.IsFundamental();
  
  m_arrayHandler->clear( address );

  size_t cursorSize = m_query->selectionSize(m_recordId, m_recordId.size()-1);
  unsigned int i=0;
  while ( i< cursorSize ){

    m_recordId[m_recordId.size()-1] = (int)i;
    m_query->selectRow( m_recordId );

    // Create a new element for the array
    void* objectData = 0;
    if(isElementFundamental){
      objectData = &primitiveStub;
    } else {
      objectData = iteratorReturnType.Construct().Address();
    }

    void* componentData = objectData;
    void* keyData = 0;

    if ( keyType ) { // treat the key object first
      keyData = static_cast< char* >( objectData ) + firstMember.Offset();
      m_keyReader->setRecordId( m_recordId );
      m_keyReader->read( keyData );
      
      componentData = static_cast< char* >( objectData ) + secondMember.Offset();
    }
    m_dataReader->setRecordId( m_recordId );
    m_dataReader->read( componentData );

    size_t prevSize = m_arrayHandler->size( address );
    m_arrayHandler->appendNewElement( address, objectData );
    bool inserted = m_arrayHandler->size( address )>prevSize;
    if ( ! ( iteratorReturnType.IsFundamental() ) ) {
      iteratorReturnType.Destruct( objectData );
    }
    if ( !inserted ) {
      throwException( "Could not insert a new element in the array type \"" +
                      m_objectType.Name(Reflex::SCOPED) + "\"",
                      "STLContainerReader::read" );
    }
    ++i;
  }

  m_arrayHandler->finalize( address );

}

void ora::STLContainerReader::select ( int oid ) [virtual]

Implements ora::IRelationalReader.

Definition at line 317 of file STLContainerStreamer.cc.

References ora::throwException().

                                           {
  if(!m_query.get()){
    throwException("The streamer has not been built.",
                   "STLContainerReader::read");
  }
  coral::AttributeList& whereData = m_query->whereData();
  whereData[ m_mappingElement.pkColumn() ].data<int>() = oid;
  m_query->execute();
  if(m_keyReader.get()) m_keyReader->select( oid );
  m_dataReader->select( oid );
}

void ora::STLContainerReader::setRecordId ( const std::vector< int > & identity ) [virtual]

Implements ora::IRelationalReader.

Definition at line 329 of file STLContainerStreamer.cc.

References i.

                                                                       {
  m_recordId.clear();
  for(size_t i=0;i<identity.size();i++) {
    m_recordId.push_back( identity[i] );
  }
  // allocate the element for the index...
  m_recordId.push_back( 0 );
}