[rules-users] Rule Inheritance support

[kunal]

I didn't get any suggestions here. I am just worried that I may be trying to
do something not feasible/advisable. I will appreciate any hints here..


kunal wrote:
> 
> Hello list. I needed some expert advice related to implementing Rule
> inheritance in Drools. I will still consider myself new to Drools and
> trying to go through all the source code currently.
> 
>  
> 
> The requirement for rule inheritance that I have is as follows:
> 
>  
> 
> A set of rules are defined/implemented on an entity acting as a template
> for other entities. Any entity created using template entity will
> inherit rules defined in template. There may be hundreds of child
> entities created from parent template entity. Inheritance here supports
> the following:
> 
> 1. All enabled rules from template are also enabled on child entity.
> 
> 2. Child entity can over-ride one or more of the rules defined in
> template. Child entity may also change rule settings/disable them.
> 
> 3. Child entity can also extend rule-base by adding its own rules which
> are not defined in template.
> 
>  
> 
> I know there has been mentioned in the list of not having support for
> rule inheritance in Drools yet, but no discussion of how to achieve it.
> So any insights will be greatly appreciated. 
> 
>  
> 
> Also one of the design questions here is should we use separate
> rule-base for each child entity as well as template entity (there can be
> potentially hundreds of child entities for a given template) or should
> we try to use only one rule-base and provide support for inheritance
> using only custom agenda filtering. Usage of custom agenda filter may
> help with performance as it won't require hundreds of rule-bases but may
> not be even feasible to what we are trying to accomplish here. Also it
> may result in other short-comings but I can't visualize it just yet. 
> 
>  
> 
> Thanks
> 
>  
> 
>  
> 
> Kunal Shah 
> 
> 
>  
> 
> 
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> 
> 

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