[rules-users] Rule engine comparison/due diligence

[Steve Nunez]

Stephen,

I've recently conducted due diligence studies on commercial and  
open-source BRMSs for three large companies in Asia-Pacific (and am  
likely to start another one in a few weeks).

Whilst your requirements are quite high level, drools probably meets  
most of them. Likely you'll end up with a handful that will, and from  
that point your specific requirements will dictate which one is the  
'best' choice.

Contact me directly if you want to discuss further.

Regards,
     - Steve

Quoting Mark Proctor <mproctor at codehaus.org>:

> 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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