SWRL rules with custom built-ins

[Maatary Okouya]

Hi, 

I'm currently working with Pellet and OWL ontology that SWRL rules with custom builtins. I wrote those custom builtins according to the Pellet custom builtins mechanism. Now that i ma trying to move to stardog, i was wondering if something similar or a workaround existed with Stardog. 

Many thanks, 

Maatary

[Maatary Okouya]

Also i would like to know what would be the consequence if i store owl ontology with builtins that stardog do not understand, are those rules simply ignore or it might create a bug ?

[Mike Grove]

On Tue, Dec 10, 2013 at 6:37 PM, Maatary Okouya <maatar...@gmail.com> wrote:

Also i would like to know what would be the consequence if i store owl ontology with builtins that stardog do not understand, are those rules simply ignore or it might create a bug ?

The rules should be ignored.

It's possible to have your own custom built-ins; Stardog supports extension functions [1] as referenced in the SPARQL spec.  You need to create an implementation of the Function [2] interface and include it in the Stardog classpath so it's available to the JDK service loader.  Some brief instructions are mentioned in the javadocs.

Cheers,

Mike

[1] http://www.w3.org/TR/2012/PR-sparql11-query-20121108/#extensionFunctions

[2] https://gist.github.com/mhgrove/7928725

 

On Wednesday, December 11, 2013 12:35:12 AM UTC+1, Maatary Okouya wrote:

Hi, 

I'm currently working with Pellet and OWL ontology that SWRL rules with custom builtins. I wrote those custom builtins according to the Pellet custom builtins mechanism. Now that i ma trying to move to stardog, i was wondering if something similar or a workaround existed with Stardog. 

Many thanks, 

Maatary

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[Maatary Okouya]

Coming back to this old question. What i'm not sure to follow in your explanation is: 

can i use those custom function within SWRL rule or only within sparql (using stardog) ? did you mean that given that the function are global, they can be both used when evaluating custom fuction is a swrl rules as well as in a sparql rule ?

[Evren Sirin]

Once you define your custom functions they can be used in both queries
and rules.

Best,
Evren

[Maatary Okouya]

Many thanks Evern. 

Do you have any idea where i could find some example code, of function implementation ?

[Mike Grove]

On Sun, Jul 6, 2014 at 10:03 AM, Maatary Okouya <maatar...@gmail.com> wrote:

Many thanks Evern. 

Do you have any idea where i could find some example code, of function implementation ?

Not currently, no.  But we'll be adding an example to the distribution as soon as we can.

Cheers,

Mike

[Maatary Okouya]

Ok, please keep me posted on that.