[rules-users] Rule engine comparison/due diligence

[Mark Proctor]

Stephen Kestle wrote:
> Has anybody tried to evaluate the different rules engines in the 
> interests of using it in their companies' technology stack?  I've got 
> to do some due diligence, so need to evaluate the others.
>
> Specifically, we're looking at a dynamic data model (not OO), and so 
> that needs to be supported in some way (which I am heavily evaluating 
> for drools :)).  There are plenty of other criteria, but the show 
> stoppers are:
>
>     * unable to support a dynamic data model (being able to type
>       different structures with the same object base, and to a lesser
>       degree being able to compose those types into other dynamic types)
>
in drools 5.0, along with XSD/JAXB definitions and dataloaders and 
Smooks ETL dataloader.
>
>    *
>
>
>     * Lack of support (either community or commercial)
>
You can get support from JBoss, a Division of RedHat:
http://www.jboss.com/products/rules
>
>     * Lack of rule management (activation and expiry dates for rules)
>
rules have attributes to specify dateEffective and dateExpires as 
attributes.
>
> Also high on the list are:
>
>     * DSL support
>     * rule composition and reuse (I don't really know much about how
>       this this concept plays out with rules yet)
>     * Testing: the person creating the rules can write the tests, in
>       the same designer
>     * Auditing and understanding how the engine got to the state it's in
>
> So far I've found about 15-20 engines.  Hopefully most of them will 
> fall out of the early criteria :)
>
> Cheers
>
> Stephen
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>
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