[rules-users] newbie - dynamic rules in java and db design

[Vikrant Yagnick]

I'm very new to drools world.. so please bear with me my beginner question..


I've following requirements in

*store the rules in database and load them dynamically.

*.provide the editor to the business user where they can add/edt the rules.

I think for this requirement, either i can go with BRMS or implement it my
own.

IF I use BRMS, Then my understanding is that it will have its set of
tables(no explicit db design is required) and we can manage the rules using
web editor.

1. Will it easy for business user to manager rules on their own without
interruption of developers?

[Vikrant] Well it depends on the kind of rules. You can always use DSL to make them look like English language and hence be easy for them to use. There is also a guided editor in the BRMS but it will take a bit of work depending on the kind of rules you have to make it work for every business scenario.


2. Can we run BRMS 4.x in tomcat 5.5 version?

[Vikrant] It worked for me.

If I dont use BRMS, then i have to come up with own way of managing rules.

In this case, I'm planning to store the rules in GUI friendly format (I've
not decided on the format..)in the database(and provide my own GUI to manage
the rules) . Then Application will convert those rules into drools specific
language and load dynamically.
3. Is this right approach? if not, please give your suggestion.

[Vikrant] One project I know off, is taking this approach and developing their own BRMS. The idea being to keep the BRMS and the rules language independent of any specific rule engine. This is a good approach if that is your aim, however it will need a lot of work.

4. I think rules can be written in  java or drools native language. In my
case, When I read the rules from db which is in GUI friendly format,Will it
be easy to convert that to java rules or drools native language?

[Vikrant] Drools can be written in XML or English. For the GUI, you could use XML rather than create your own language and let drools compile things automatically.


Thanks in advance for your help.
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