[rules-users] JBRMS - Rule IDs/Referencing

[Mark Proctor]

The system is an "asset managemnt system", every item is an asset from 
the rule to the package configuration. You can reference any item using 
a unique name + package name +  version, each item also has a UUID 
(provided by the JCR node). However we don't have any remoting/ws api 
access to this info - you would have to build ontop of the programmatic 
api provided in drools-repository. The versioning is multi dimensional 
too - i.e. a Package configuration  is itself versioned against specific 
versions of rules, if you want to update the Package to a new version of 
a Rule, you must create a new version of the Package Configuration.

So it sounds like it doesn't do what you want now, but the foundations 
are there and you can get involved with us and help us change that.

Mark


Michael Rhoden wrote:
> I have a question about rule storage and referencing with the JBRMS. 
> Mostly this is directed to Michael Neale (since I believe this is his 
> baby), but since I cant catch him on IRC I'll post it to here to see 
> if others have this similar concern.
>  
> A little history before I get to the question. We have been using 
> drools since 2.x (still on 2.x) and have developed much around the 
> core engine. The way we currently store rules is in a database, at 
> runtime we pull them out and write an xml file. What this allows is 
> rule referencing back to the authoring source. We translate from 
> DB->XML so the "then" returns the ID. We also use it to create unique 
> names for rules. In our editor we have notes, versions and the 
> complete rule code, similar to the new JBRMS. When a rule fires in our 
> system the purpose may be to show an error or change a price. Either 
> way sometimes people ask why did this fire, or further, they dispute 
> the rule all together. So in each message or price change we track the 
> ID of the rule being fired/applied.
>  
> From that we have developed 2 tools, one to lookup a rule and see a 
> great deal of info about that rule (whats/whys), the other is an 
> Override tool that allows you, given authority, to associate a rule ID 
> to a transaction and have coded so when the engine fires this rule, it 
> will be ignored by the system. Obviously how we override is not 
> something I expect you to solve, but giving me the ability by having a 
> unique ID would be.
>  
> I would think the desire to "Track" and "Override" a rule is pretty 
> high for most people using a rule system in an enterprise. What makes 
> this possible is exposing a unique identifier in the storage of rules 
> (think database and editor) as well as the execution of rules (as they 
> fire). I setup the MR2 of the JBRMS and tried to look at the storage 
> system to see if a rule had some unique identifier that we could use, 
> and found none. Seems like a rulebase is a blob, though maybe I'm just 
> looking at it wrong.
>  
> So my question and/or request is there a way to have each rule have a 
> unique identifier (by version is fine) in the JBRMS storage system. I 
> think this is the first step, the second is harder but make the system 
> associate the ID to a rule at execution ("then"). Similar to the 
> option of expiring a rule at X date.
>  
> While this may not seem huge, and is definitely not as cool 
> as changing semantics in MVEL, it is a huge barrier of adopting this 
> new very feature rich JBRMS.
>  
> Thanks,
> Michael Rhoden
>  
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