ora::BlobWriterBase Class Reference

#include <BlobStreamer.h>

Inheritance diagram for ora::BlobWriterBase:

Public Member Functions
void	bindData (const void *data)
	BlobWriterBase (const Reflex::Type &objectType, MappingElement &mapping, ContainerSchema &contSchema)
bool	buildDataElement (DataElement &dataElement, IRelationalData &relationalData, RelationalBuffer &operationBuffer)
virtual	~BlobWriterBase ()

Private Attributes
IBlobStreamingService *	m_blobWriter
int	m_columnIndex
DataElement *	m_dataElement
MappingElement &	m_mapping
Reflex::Type	m_objectType
RelationalBuffer *	m_relationalBuffer
IRelationalData *	m_relationalData
ContainerSchema &	m_schema
bool	m_useCompression

Detailed Description

Definition at line 15 of file BlobStreamer.h.

Constructor & Destructor Documentation

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

Definition at line 16 of file BlobStreamer.cc.

                                                                  :
  m_objectType( objectType ),
  m_mapping( mapping ),
  m_columnIndex(-1),
  m_schema( contSchema ),
  m_dataElement( 0 ),
  m_relationalData( 0 ),
  m_relationalBuffer( 0 ),
  m_blobWriter( 0 ),
  m_useCompression( true ){
}

ora::BlobWriterBase::~BlobWriterBase ( )

virtual

Definition at line 30 of file BlobStreamer.cc.

                                  {
}

Member Function Documentation

void ora::BlobWriterBase::bindData

(

const void *

data

)

Definition at line 55 of file BlobStreamer.cc.

References ora::throwException().

                                                  {
  if( ! m_dataElement ){
    throwException( "The streamer has not been built.",
                    "BlobWriterBase::bindData");
  }
  void* dataElementAddress = m_dataElement->address( data );
  coral::Attribute& relDataElement = m_relationalData->data()[ m_columnIndex ];
  boost::shared_ptr<coral::Blob> blobData = m_blobWriter->write( dataElementAddress, m_objectType, m_useCompression );
  m_relationalBuffer->storeBlob( blobData );
  relDataElement.bind<coral::Blob>( *blobData );
}

bool ora::BlobWriterBase::buildDataElement	(	DataElement &	dataElement,
		IRelationalData &	relationalData,
		RelationalBuffer &	operationBuffer
	)

Definition at line 33 of file BlobStreamer.cc.

References ora::IRelationalData::addBlobData(), ora::poolSchemaVersion(), and ora::throwException().

                                                                             {
  if( m_mapping.columnNames().size() == 0 ){
    throwException( "The mapping element does not contain columns.",
                    "BlobWriterBase::build");
  }

  m_dataElement = &dataElement;
  std::string columnName = m_mapping.columnNames()[0];
  m_columnIndex = relationalData.addBlobData( columnName );
  m_relationalData = &relationalData;
  m_relationalBuffer = &operationBuffer;
  m_blobWriter = m_schema.blobStreamingService();
  if(!m_blobWriter){
    throwException("Blob Streaming Service is not installed.",
                   "BlobWriterBase::::build");
  }
  if( m_schema.dbSession().schema().mainTable().schemaVersion()==poolSchemaVersion() ) m_useCompression = false;
  return true;
}

Member Data Documentation

IBlobStreamingService* ora::BlobWriterBase::m_blobWriter

private

Definition at line 36 of file BlobStreamer.h.

int ora::BlobWriterBase::m_columnIndex

private

Definition at line 29 of file BlobStreamer.h.

DataElement* ora::BlobWriterBase::m_dataElement

private

Definition at line 33 of file BlobStreamer.h.

MappingElement& ora::BlobWriterBase::m_mapping

private

Definition at line 28 of file BlobStreamer.h.

Reflex::Type ora::BlobWriterBase::m_objectType

private

Definition at line 27 of file BlobStreamer.h.

RelationalBuffer* ora::BlobWriterBase::m_relationalBuffer

private

Definition at line 35 of file BlobStreamer.h.

IRelationalData* ora::BlobWriterBase::m_relationalData

private

Definition at line 34 of file BlobStreamer.h.

ContainerSchema& ora::BlobWriterBase::m_schema

private

Definition at line 30 of file BlobStreamer.h.

bool ora::BlobWriterBase::m_useCompression

private

Definition at line 37 of file BlobStreamer.h.