Hi Daniel, the Jena parser works fine with the SimpleMGraph. I am working inside eclipse and maybe this is why I had the problem with the Parser. I do not have a META-INF/services file inside the project only the followings
target/maven-shared-archive-resources/META-INF/ DEPENDENCIE LICENSE NOTICE Maybe I have to use some maven command. Regards Luigi 2012/11/13 Daniel Spicar <dspi...@apache.org> > Hi Luigi, > > Parser.getinstance() should work even outside the OSGi container. We use it > tests as well. However you have to have the jena parser implementation in > the Classpath. The getInstance Method should then read the parser > implementations from META-INF/services in the classpath. Remember, that the > Parser class is provided by rdf.core but the Jena parser implementation is > provided by rdf.jena.parser. So you need both of these in your test > classpath or whatever classpath you are using. > > For the other question. You can use > org.apache.clerezza.rdf.core.impl.SimpleMGraph. But remember this is an > in-memory graph. Mostly this is fine but when you pare huge amounts of data > you could run out of memory. > > Daniel > > > On 13 November 2012 16:11, Luigi Selmi <luigise...@gmail.com> wrote: > > > Hello Daniel, > > thank you for the response. The solution that uses an instance of a > parser > > doesn't work I think for the reason that I have written, there is no > > instance available outside the OSGi service platform (Fuseki). The code > > that I use is > > > > org.apache.clerezza.rdf.core.serializedform.Parser parser = > > org.apache.clerezza.rdf.core.serializedform.Parser.getInstance(); > > InputStream is = subjectUrl.openStream(); > > Graph subjectGraph = parser.parse(is, SupportedFormat.RDF_XML); > > > > returns an UnsupportedFormatException > > > > For the solution with the Jena parser I need a MGraph implemetation since > > the parse method of the Jena parser requires the graph as an attribute. > > > > org.apache.clerezza.rdf.jena.parser.JenaParserProvider parser = new > > org.apache.clerezza.rdf.jena.parser.JenaParserProvider(); > > InputStream is = subjectUrl.openStream(); > > MGraph subjectGraph = <???> > > parser.parse(<???>, is, SupportedFormat.RDF_XML, null); > > > > Can you tell me what kind of implementation of the MGraph can I use to > pass > > to the parse method of the JenaParserProvider ? > > > > Best > > > > Luigi > > > > > > > > 2012/11/13 Daniel Spicar <dspi...@apache.org> > > > > > To parse serialized RDF formats in tests or without the OSGi > environment > > > you can use this: > > > > > > org.apache.clerezza.rdf.core.serializedform.Parser parser = > > > org.apache.clerezza.rdf.core.serializedform.Parser.getInstance(); > > > Graph graph = parser.parse( > > > inputStream, formatString); > > > > > > formatString can be any of the supported formats, e.g. > > > "application/rdf+xml" or "text/rdf+nt" > > > > > > The required dependencies are: > > > > > > For the Parser class > > > <dependency> > > > <groupId>org.apache.clerezza</groupId> > > > <artifactId>rdf.core</artifactId> > > > </dependency> > > > > > > For the parsing providers: > > > <dependency> > > > <groupId>org.apache.clerezza</groupId> > > > <artifactId>rdf.jena.parser</artifactId> > > > </dependency> > > > > > > You can also use the jena parser directly by instanciating it: > > > new org.apache.clerezza.rdf.jena.parser.JenaParserProvider(); > > > > > > > > > To bind a parser in the OSGi environment you can use this: > > > > > > @org.apache.felix.scr.annotations.Reference > > > private org.apache.clerezza.rdf.core.serializedform.Parser parser; > > > > > > > > > Note: Supported formats (by the jena parser) are: > > > "application/rdf+xml"; > > > "text/turtle"; > > > "application/x-turtle"; > > > "text/rdf+nt"; > > > "text/rdf+n3"; > > > "application/rdf+json"; > > > > > > Hope this helps. > > > > > > Daniel > > > > > > On 12 November 2012 19:40, Luigi Selmi <luigise...@gmail.com> wrote: > > > > > > > Hello > > > > I am using Clerezza API to manage FOAF profiles. I need to parse foaf > > > > RDF/XML files and so I need the parser provided by the Clerezza > > platform > > > > but don't know how to bind a parsing provider. I would like to test > the > > > > parser before creating the bundle to upload and activate on Felix. Is > > > that > > > > possible ? > > > > > > > > Thanks > > > > > > > > Luigi > > > > > > > > > >
