I’am using 5.2.0-SNAPSHOT using maven from https://repository.jboss.org/nexus/content/groups/public/ and i can’t make it work…

The query still return a size of 0…

Can you share your entire project with me ?

Thanks

De : Wolfgang Laun [mailto:wolfgang.laun@gmail.com]
Envoyé : jeudi 14 avril 2011 09:34
À : Rules Users List
Objet : Re: [rules-users] Simple rule and Query

This seems to be fixed for 5.2.x.:

declare Num
  num : Integer
end

rule sort
when
    Integer( $i: intValue )
then
    insert( new Num( $i ) );
end

query numbers
    $a: Num( $b: num )
end


    QueryResults qRes = session.getQueryResults( "numbers" );
    System.out.println( "result count: " + qRes.size() );
    for( QueryResultsRow row: qRes ){
        Object obj = row.get( "$b" );
    System.out.println( "$b=" + obj.toString() );
    }

This produces the expected results.

Calling getQueryResults with a string not denoting an existing query returns an empty result set. I've updated the javadoc - thanks.

-W

2011/4/14 DECOUX Yannick <yannick.decoux@ucm.be>

query numbers
    $a: Num( $b: num )
end
Hi everyone,

I’am still stuck with this simple example, anyone can tell me where to look or what I’m missing ?

Thanks

Yannick

De : DECOUX Yannick [mailto:yannick.decoux@ucm.be]
Envoyé : mardi 5 avril 2011 07:52
À : rules-users@lists.jboss.org
Objet : [rules-users] Simple rule and Query

Hi,

I’am trying to use Query and i’am facing a little problem :

Given this simple rule :

package be.test.person

import be.test.person.*

query "get adult"

      adult : Adult( )

end

query "get person"

      person : Person( )

end

declare Adult

      name : String

end

rule "A person over 18 is an adult"

when

            Person( age >= 18)

then

            System.out.println("Adult detected");

insert(new Adult());        

end

Lets suppose one Person over 18 is inserted inside the working memory, the result of the query « get adult » is 0 (Please note the declaration of Adult type inside the rule)

If I create a Java class Adult (commenting the one in the .drl file) and then run the query again, this time the result is 1

Also, the signature of org.drools.runtime.rule.WorkingMemory.getQueryResults(String) says IllegalArgumentException when query is not found in the KnowledgeBase. This doesn’t seems to be the case when I use a fake query name.

I’am using drools 5.1.1

Any idea on this ?

Thanks

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