ora::CArrayWriter Class Reference

#include <CArrayStreamer.h>

Inheritance diagram for ora::CArrayWriter:

Public Member Functions
bool	build (DataElement &offset, IRelationalData &relationalData, RelationalBuffer &operationBuffer)
	CArrayWriter (const Reflex::Type &objectType, MappingElement &mapping, ContainerSchema &contSchema)
	Constructor. More...
void	setRecordId (const std::vector< int > &identity)
void	write (int oid, const void *data)
	Writes a data element. More...
virtual	~CArrayWriter ()
Public Member Functions inherited from ora::IRelationalWriter
virtual	~IRelationalWriter ()
	Destructor. More...

Private Attributes
std::auto_ptr< IArrayHandler >	m_arrayHandler
std::auto_ptr< IRelationalWriter >	m_dataWriter
MultiRecordInsertOperation *	m_insertOperation
DataElement	m_localElement
MappingElement &	m_mappingElement
Reflex::Type	m_objectType
DataElement *	m_offset
std::vector< int >	m_recordId
ContainerSchema &	m_schema

Detailed Description

Definition at line 21 of file CArrayStreamer.h.

Constructor & Destructor Documentation

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

Constructor.

Definition at line 17 of file CArrayStreamer.cc.

                                                              :
  m_objectType( objectType ),
  m_mappingElement( mapping ),
  m_schema( contSchema ),
  m_recordId(),
  m_localElement( ),
  m_offset( 0 ),
  m_insertOperation( 0 ),
  m_arrayHandler(),
  m_dataWriter(){
}

ora::CArrayWriter::~CArrayWriter ( )

virtual

Definition at line 31 of file CArrayStreamer.cc.

                              {
}

Member Function Documentation

bool ora::CArrayWriter::build ( DataElement &  offset, IRelationalData &  relationalData, RelationalBuffer &  operationBuffer  )

virtual

Implements ora::IRelationalWriter.

Definition at line 34 of file CArrayStreamer.cc.

References i, ora::ArrayHandlerFactory::newArrayHandler(), ora::RelationalBuffer::newMultiRecordInsert(), ora::RelationalStreamerFactory::newWriter(), evf::evtn::offset(), ora::ClassUtils::resolvedType(), and ora::throwException().

                                                                  {

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

  // Check the array type
  Reflex::Type arrayType = m_objectType.ToType();
  Reflex::Type arrayResolvedType = ClassUtils::resolvedType(arrayType);
  // Check the component type
  if ( ! arrayType || !arrayResolvedType ) {
    throwException( "Missing dictionary information for the element type of the array \"" +
                    m_objectType.Name(Reflex::SCOPED|Reflex::FINAL) + "\"",
                    "CArrayWriter::build" );
  }
  
  RelationalStreamerFactory streamerFactory( m_schema );
  
  // first open the insert on the extra table...
  m_insertOperation = &operationBuffer.newMultiRecordInsert( m_mappingElement.tableName() );
  const std::vector<std::string>& columns = m_mappingElement.columnNames();
  if( !columns.size() ){
    throwException( "Id columns not found in the mapping.",
                    "CArrayWriter::build");    
  }
  for( size_t i=0; i<columns.size(); i++ ){
    m_insertOperation->addId( columns[ i ] );
  }

  m_offset = &offset;

  m_arrayHandler.reset( ArrayHandlerFactory::newArrayHandler( m_objectType ) );
  
  std::string arrayTypeName = arrayType.Name();
  // Retrieve the relevant mapping element
  MappingElement::iterator iMe = m_mappingElement.find( arrayTypeName );
  if ( iMe == m_mappingElement.end() ) {
    throwException( "Item for \"" + arrayTypeName + "\" not found in the mapping element",
                    "CArrayWriter::build" );
  }
  
  m_dataWriter.reset( streamerFactory.newWriter( arrayResolvedType, iMe->second ));
  m_dataWriter->build( m_localElement, *m_insertOperation, operationBuffer );
  return true;
}

void ora::CArrayWriter::setRecordId ( const std::vector< int > &  identity )

virtual

Implements ora::IRelationalWriter.

Definition at line 83 of file CArrayStreamer.cc.

References i.

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

void ora::CArrayWriter::write ( int  oid, const void *  data  )

virtual

Writes a data element.

Implements ora::IRelationalWriter.

Definition at line 91 of file CArrayStreamer.cc.

References data, i, ora::InsertCache::processNextIteration(), and ora::throwException().

                                                      {

  if(!m_offset){
    throwException("The streamer has not been built.",
                   "CArrayWriter::write");
  }
  const std::vector<std::string>& columns = m_mappingElement.columnNames();
  if( columns.size() != m_recordId.size()+1){
    throwException( "Record id elements provided are not matching with the mapped id columns.",
                    "CArrayWriter::write");
  }
  
  void* data = m_offset->address( inputData );
  
  // Use the iterator to loop over the elements of the container.
  size_t containerSize = m_arrayHandler->size( data  );
  
  if ( containerSize == 0  ) return;

  size_t startElementIndex = m_arrayHandler->startElementIndex( data );

  std::auto_ptr<IArrayIteratorHandler> iteratorHandler( m_arrayHandler->iterate( data ) );

  InsertCache& bulkOperation = m_insertOperation->setUp( containerSize-startElementIndex+1 );

  for ( size_t iIndex = startElementIndex; iIndex < containerSize; ++iIndex ) {

    m_recordId[m_recordId.size()-1] = iIndex;
    coral::AttributeList& dataBuff = m_insertOperation->data();

    dataBuff[ columns[0] ].data<int>() = oid;
    for( size_t i = 1;i < columns.size(); i++ ){
      dataBuff[ columns[i] ].data<int>() = m_recordId[i-1];
    }

    void* objectReference = iteratorHandler->object();

    m_dataWriter->setRecordId( m_recordId );
    m_dataWriter->write( oid, objectReference );
    
    bulkOperation.processNextIteration();
    // Increment the iterator
    iteratorHandler->increment();
  }

  m_arrayHandler->finalize( const_cast<void*>( data ) );
  
}

Member Data Documentation

std::auto_ptr<IArrayHandler> ora::CArrayWriter::m_arrayHandler

private

Definition at line 45 of file CArrayStreamer.h.

std::auto_ptr<IRelationalWriter> ora::CArrayWriter::m_dataWriter

private

Definition at line 46 of file CArrayStreamer.h.

MultiRecordInsertOperation* ora::CArrayWriter::m_insertOperation

private

Definition at line 44 of file CArrayStreamer.h.

DataElement ora::CArrayWriter::m_localElement

private

Definition at line 40 of file CArrayStreamer.h.

MappingElement& ora::CArrayWriter::m_mappingElement

private

Definition at line 37 of file CArrayStreamer.h.

Reflex::Type ora::CArrayWriter::m_objectType

private

Definition at line 36 of file CArrayStreamer.h.

DataElement* ora::CArrayWriter::m_offset

private

Definition at line 43 of file CArrayStreamer.h.

std::vector<int> ora::CArrayWriter::m_recordId

private

Definition at line 39 of file CArrayStreamer.h.

ContainerSchema& ora::CArrayWriter::m_schema

private

Definition at line 38 of file CArrayStreamer.h.