try {
outputTriples = new FileOutputStream(dataFileTriples) ;
outputQuads = new FileOutputStream(dataFileQuads) ;
}
catch (FileNotFoundException e) { throw new AtlasException(e) ; }
NodeTableBuilder sink = new NodeTableBuilder(dsg, monitor, outputTriples, outputQuads) ;
monitor.start() ;
sink.startBulk() ;
for( String filename : datafiles)