[owl-s] R: OWLKnowledgeBase crashes

[G. Fenza]

Hi,

I need to elaborate owl type associated to owl-s loaded services, so I need
to investigate on IOPE (Input, Output, 
) service’s information expecially
on owl parameter type. With pellet I think that I can ask to knowledgebase
if one owl type is subtype of another, supertype or other, isn’t it? 

thanks

 

Giuseppe

  _____  

Da: Demetris G [mailto:demetris at ece.neu.edu] 
Inviato: lunedì 5 giugno 2006 23.41
A: G. Fenza
Oggetto: Re: [owl-s] OWLKnowledgeBase crashes

 


Hi Giuseppe,

    I am not sure about your issue (sorry) but I have a separate question if
you don't mind.
You said that you are using OWL-S API with the Pellet Reasoner to read and
elaborate
on semantic services. What kind of elaboration are you working on ? What do
you mean
by that.

Thanks much

G. Fenza wrote:



--> 

 

 

Hi,

Sorry for my bad English.

I am using OWL-S Api with Pellet reasoner to read and elaborate a lot of
semantic services (400-500 about). 

Unfortunately in the same execution thread I read these services at  boot of
application, in a loading phase, so in other time I need to loop on services
loaded but when I try to execute kb.getServices()   method on my
OWLKnowledgeBase instance I have a NullPointerException. This happens in the
same execution thread and in also on other call on kb object, for example
when I try to call isSubType(subType, superType) method or other (in this
casa with “Not Implemented Yet” exception message). Fortunately after more
attempts sometimes all function so I think that is my use mode of library
incorrect or there is thread that run but I don’t wait.

I hope that my question is understandable, if you need another information I
can give major details.

Best reguards

Giuseppe

 

 





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