Hello Dave,
I think the problem is that he writes to another file - and I guess this
one already contains some data. Of course the write method cannot append
data, but just overwrites the file. Am I right? Anything else would
sound like some magic.
Otherwise, to append data, one would have to load it into a separate
model and add data directly to this model.
Kind regards,
Lorenz
> On 22/07/16 09:58, kumar rohit wrote:
>> The main() pass the required file and then just the GUI loads because we
>> have to deal with a text field where user enter his name and we will
>> create
>> individual of that name.
>>
>> The main purpose of this code is to create individual (after user
>> enter the
>> name) and store it locally in a file *(either a separate file or to the
>> file we have read **InputStream in =FileManager.get().open(file);*)
>>
>> It writes the required result to the console(model.write method) but
>> when I
>> try to write it in a file, it just remove all the data from the
>> destination
>> file and even the ontology URI.
>>
>> For writing to a file, I used these both methods but both does not work.
>>
>> (1) FileWriter out = new FileWriter( fileName );
>>
>> try {
>> model.write( out, "RDF/XML-ABBREV" );}
>>
>> 2) FileOutputStream out=new FileOutputStream(filename);
>> RDFWriter d = model.getWriter("RDF/XML-ABBREV");
>> d.write(model,out,null);
>> }catch(Exception e) {}
>
>
> Make sure you close the stream, that's probably the source of your
> random loss of output.
>
> The reason you see Seq and other such junk is because you are writing
> the whole model, with inference, and a default OntModel includes RDFS
> inference. Use model.write which for an OntModel defaults to writing
> just the base model. Also, unless you need inference use an explicit
> OntModelSpec which doesn't have any (e.g. OWL_MEM).
>
> Dave
>
>> On Fri, Jul 22, 2016 at 12:30 AM, Lorenz B. <
>> [email protected]> wrote:
>>
>>> 1.) This is not a minimal running example! that means, nobody can test
>>> it without some (in your case too much) effort to get it running.
>>> 2.) w.r.t. 1), look at your main() method, it reads a file and then?
>>> 2.) Please tell us exactly WHAT does not work and WHAT you expect.
>>> 3.) The OntModel object has a method write, not sure what you did there
>>> with calling getWriter and the like
>>>
>>>> *When I run this program without writing it to the file, it runs
>>> smoothly.
>>>> But when I copy it to a file (both newly created and existing file),
>>>> sometime it adds the garbage claases to the file like Seq, Bag,
>>>> Resource
>>>> and most of the time it does nothing except it empties the destination
>>>> file.*
>>>>
>>>> *I have copied the whole code except the code auto generated by
>>>> netbeans*
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> *public class NewJFrame extends javax.swing.JFrame {*
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> * public static void readOntology(String file,OntModel model)*
>>>>
>>>> * {*
>>>>
>>>>
>>>> * InputStream in =FileManager.get().open(file);*
>>>>
>>>>
>>>>
>>>> *if (in==null) {*
>>>>
>>>> *throw new IllegalArgumentException( "File: " + file + " not
>>>> found");*
>>>>
>>>> *}*
>>>>
>>>> * model.read(in,null);*
>>>>
>>>> * //in.close();}}*
>>>>
>>>>
>>>>
>>>> private void read1(String str, OntModel model)
>>>>
>>>> {
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> String ns="
>>>> http://www.semanticweb.org/ontologies/untitled-ontology-54/";;
>>>>
>>>>
>>>> OntClass user = model.createClass(ns + "User");
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> OntClass user1 = model.getOntClass(ns + "User");
>>>>
>>>> Individual janeSmith = user1.createIndividual(ns + str)
>>>>
>>>>
>>>>
>>>> try {
>>>>
>>>> String file="F://newontology.owl";
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> FileOutputStream f1=new FileOutputStream(file);
>>>>
>>>> RDFWriter d = model.getWriter("RDF/XML-ABBREV");
>>>>
>>>> d.write(model,f1,null);
>>>>
>>>> }catch(Exception e) {}
>>>>
>>>>
>>>> *private void jButton1ActionPerformed(java.awt.event.ActionEvent
>>>> evt) {
>>>> *
>>>>
>>>>
>>>>
>>>> *OntModel model=ModelFactory.createOntologyModel();*
>>>>
>>>>
>>>> * String str=jTextField2.getText()*
>>>>
>>>>
>>>>
>>>> * read1(str, model); }}*
>>>>
>>>>
>>>>
>>>> * public static void main(String args[]) {*
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> * OntModel model = ModelFactory.createOntologyModel();*
>>>>
>>>> * String file="F://updated.owl";*
>>>>
>>>> * readOntology(file , model );*
>>>>
>>>> *}*
>>>>
>>> --
>>> Lorenz Bühmann
>>> AKSW group, University of Leipzig
>>> Group: http://aksw.org - semantic web research center
>>>
>>>
>>
>
--
Lorenz Bühmann
AKSW group, University of Leipzig
Group: http://aksw.org - semantic web research center
