[rules-users] Setting strictTyping/strongTyping modes

[Mark Proctor]

On 21/03/2012 18:45, barnesjd wrote:
> I'm trying to disable strictTyping for my MVEL rules, but I cannot figure out
> how.   http://mvel.codehaus.org/MVEL+2.0+Typing The only example I've found
> shows the use of the class ParserContext.  I'm using KnowledgeBuilder,
> KnowledgeBase, StatefulKnowledgeSession, etc. to run my rules.  I don't see
> any methods where I can disable strictTyping or get the ParserContext, so
> I'm out of ideas.
>
> Can anyone point me in the right direction?
http://docs.jboss.org/drools/release/5.4.0.Beta2/knowledge-api-javadoc/org/drools/KnowledgeBaseConfiguration.html
And MVEL supports the following configurations:

  * drools.dialect.mvel.strict = <true|false>


However we would recommend instead that you don't use that configuration 
and instead use the @typesafe annotation on class declarations. So you 
relax just specific classes, rather than relaxing everything.
http://docs.jboss.org/drools/release/5.4.0.Beta2/drools-expert-docs/html_single/index.html


          5.7.2.1.2. @typesafe( <boolean> )

By default all type declarations are compiled with type safety enabled; 
@typesafe( false ) provides a means to override this behaviour by 
permitting a fall-back, to type unsafe evaluation where all constraints 
are generated as MVEL constraints and executed dynamically. This can be 
important when dealing with collections that do not have any generics or 
mixed type collections.



>
> Thanks!
> Joe
>
>
> --
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