[rules-users] nested boolean expressions using prefixOr

[Edson Tirelli]

   Nelson,

   Can you provide details on which exact version of drools (5.0.1?) you are
using and what is the error/stack trace you are receiving?

   Thanks,
      Edson

2010/1/19 Axelrod, Nelson <naxelrod at jcvi.org>

>  Hi,
>
>
>
> I’ve encountered problems constructing nested Boolean expressions in Drools
> 5.0 using the prefixOr syntax.  We’re using Drools to build a genome
> annotation system at the Venter Institute.     The following example rule
> assigns an annotation if there is a blast hit to a gene GB|AAQ16631.1, or
> either a blast hit to gene GB|AAQ16631.1, or to any gene within 500 bases of
> a gene with an HMM hit to TIGR00905.  I’ve left off some details to focus on
> how we are structuring the syntax of our prefixOr and prefixAnd expressions.
>
>
>
> The Drools parser throws errors when it encounters the 2nd “blast_hit”
> statement in the example below.  Our prefixOr and prefixAnd expressions work
> as expected when we use similar syntax, at least until we attempt to use
> nested or expressions.
>
>
>
> *rule* "2645|lysine decarboxylase CadA"
>
> *when*
>
>       (*or*
>
>             (*and*
>
>                   blast_hit : BlastHit( hitId=='GB|AAQ16631.1')
>
>                   gene1 : Feature( featureId == blast_hit.queryId )
>
>             )
>
>             (*or*
>
>                   (*and*
>
>                         blast_hit : BlastHit( hitId=='GB|AAQ16631.1' )
>
>                         gene1 : Feature( featureId == blast_hit.queryId )
>
>                   )
>
>                   (*and*
>
>                         hmm_hit1 : HmmHit( hitId=='TIGR00905' )
>
>                         gene1 : Feature( featureId == hmm_hit1.queryId )
>
>                         gene2 : Feature( *eval*(gene2.isWithin(gene1,
> 500)) )
>
>                   )
>
>             )
>
>       )
>
> *then*
>
>       Annotation a = *new* Annotation("lysine decarboxylase CadA");
>
>       gene1.addAnnotation(a);
>
> *end*
>
>
>
> Any suggestions are much appreciated.
>
> Thanks,
>
> Nelson
>
>
>
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>


-- 
 Edson Tirelli
 JBoss Drools Core Development
 JBoss by Red Hat @ www.jboss.com
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