[jira] [Resolved] (JENA-1965) Writing streams of RDF

["Andy Seaborne (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/JENA-1965?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andy Seaborne resolved JENA-1965.
---------------------------------
    Resolution: Information Provided

> Writing streams of RDF
> ----------------------
>
>                 Key: JENA-1965
>                 URL: https://issues.apache.org/jira/browse/JENA-1965
>             Project: Apache Jena
>          Issue Type: New Feature
>          Components: RIOT
>    Affects Versions: Jena 3.16.0
>            Reporter: Claus Stadler
>            Priority: Major
>
> For streams of Model and Datesets (or Graphs and DatasetGraphs) there does not appear to be a 'push'-based RDF Writer.
> Although there exists the deprecated method:
> {code:java}
> WriterDatasetRIOT ds = RDFDataMgr.createDatasetWriter(RDFFormat.TURTLE_PRETTY);
> {code}
> The documentation states that the returned object is for one-time use only.
> The feature request is to make it possible to write out streams of Datasets in a  push-based manner. Thereby the writer should maintain state information such that prefixes and base IRIs are not written out redundantly.
> {code:java}
> try(OutputStream out = ...} {
>   StreamWriterDatasetRIOT sink = RDFDataMgr.createStreamDatasetWriter(out,   RDFFormat.TURTLE_PRETTY);
>   sink.start(); // May immediately trigger a write on the output stream
>   for (Dataset ds : streamOfDatasets) {
>     sink.send(ds);
>     sink.flush();
>   }
>   sink.finish(); // Write out footer and free resources 
>   // Is tthere is a need for sink.close()?
> } // close resources
> {code}



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