i have a small javascript that converts a n3 graph into a javascript graph of objects. if your problem is related to XML stuff and such a lib could help, let me know. (it might be interesting to contribute it directly to exhibit, btw)
On Wed, Jun 5, 2013 at 6:13 PM, Brice Sommacal <[email protected]>wrote: > Hello everyone, > > I'm facing a "java.lang.OutOfMemoryError: GC overhead limit exceeded" error > and I would like an advice about how I could optimize my code. > > The aim of this method is to run a SPARQL query, convert it on a XML format > and then apply a XSL stylesheet[1] to write a JSON format (readable by > Exhibit - Scripted [2]). > > My piece of code was working well untill today. (I have been trying to > query a big model and the query returns too much results). > This makes my program break. > > <quote> > Query queryToExec = QueryFactory.create(query, Syntax.syntaxARQ); > QueryExecution qexec = QueryExecutionFactory.create(queryToExec, ontoIn); > ResultSet result = null; > BufferedOutputStream buf; > try{ > result = qexec.execSelect(); > buf = new BufferedOutputStream(new FileOutputStream(new File(root + > "XML/JSON_XML/"+qNameClass+".xml"))); > //Serialization of the resultSet > ResultSetFormatter.outputAsXML(buf, result); > buf.close(); > } > catch (Exception e) { > e.printStackTrace(); > } > finally{ > qexec.close(); > } > </quote> > > I know that writing XML file use loads memory.... > > I was thinking of: > - creating several XML files by tracing the ResullSetFormatter memory > usage. (is there possible?) > - avoiding XML intermediate format and write directly in one or several > JSON file... > - ... > > > > Is there someone whom find a way to avoid this kind of error (without > increasing Xms Xmx) ?? > > Thanks in advance, > > > Brice > > [1] http://data-gov.tw.rpi.edu/wiki/Sparqlxml2exhibitjson.xsl > [2] http://www.simile-widgets.org/exhibit3/ >
