multiple rules being executed rather than just one

[Tanya]

Hello,

I was wondering if you can help me with a problem which I am experiencing. I have two spin:rules associated with a class, each with different filters in the WHERE clause, but the filters aren't being applied when running the rules, with the result that both rules are being executed instead of the one rule whose filters are matched by the input data.

 Thank you for your assistance. I really appreciate it. Tanya

[Mark Graham]

Hi Tanya,

When available - can you update with the product and version you are using. and a couple of examples of the two spin queries (that include filter statements). Also, the input data used if possible. This may help the technicians when reviewing this question.

Thanks,

Mark

Thanks,
Mark


Mark Graham
TopQuadrant Support

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[Scott Henninger]

Tanya; Not very clear what you mean.  Can you provide an example?

-- Scott

[Mark Graham]

Hi Scott,

Sorry for the confusion on this thread. That was my update -  provide example- to request a little more info for you if needed. (I will exit the thread)

Thanks,

Mark

Thanks,
Mark


Mark Graham
TopQuadrant Support

*PRODUCT SUPPORT:*

sup...@topquadrant.com
http://www.topquadrant.com/products/support.html

[Tanya Hiebert]

Sure. I cannot include my project specific data though.

Version: 4.2.1
Product: TBC Free Edition

Examples:

WHERE {
    FILTER (?agent1 != ?agent2) .
    ?this a ?type .
    FILTER (?type = <http://example.org/type_ABC>) .
    BIND (:ABC_value(?agent1, ?agent2) AS ?ABC_Value) .
    BIND (:ABC_score AS ?ABC_Score) .
}

WHERE {
    FILTER (?agent1 != ?agent2) .
    ?this a ?type .
    FILTER (?type = <http://example.org/type_XYZ>) .
    BIND (:XYZ_value(?agent1, ?agent2) AS ?XYZ_Value) .
    BIND (:XYZ_score AS ?XYZ_Score) .
}

When I run the query filtering for type_ABC, the functions in type_XYZ (XYZ_value & XYZ_score) get triggered - thus the filter is not working.

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[Irene Polikoff]

Tanya,

 

Are you saying that you get something constructed for resources with type http://example.org/type_ABC that should not be constructed? What class is the rule attached to - type_ABC, type_XYZ or something else? How do ?agent1 and ?agent2 variables get bound?

 

My initial guess this is not a product issue, but rather an issue with the queries.

 

As an aside, recommend replacing

 

    ?this a ?type .
    FILTER (?type = <http://example.org/type_ABC>) .

 

With

 

    ?this a <http://example.org/type_ABC>.

 

It is inefficient to get all triples and then filter out the ones you don’t need when you are can get only the ones you need from the beginning.

 

Regards,

 

Irene

[Holger Knublauch]

Tanya,

first I don't see where ?agent1 and ?agent2 are ever bound. Second, if you have FILTER and BIND in the same { ... } block, Jena may actually change the execution order. To make sure that FILTERs get executed before BINDs, use an extra level of { ... } nesting, e.g.

WHERE {
    {
        FILTER ....
    }
    BIND ...
}

HTH
Holger

[Tanya Hiebert]

Hello Irene,

Your suggestion works - I no longer seem to be calling other functions which are outside of the "type" of interest.

Thank you for your assistance,

Tanya