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

[drools newbie]

Hello Vikrant,
Sometime ago, you replied to my question as given below. I don't get this
statement. "For the GUI, you could use XML rather than create your own
language and let drools compile things automatically. ".
can you please elaborate?

"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. "



Vikrant Yagnick wrote:
> 
> 
> 
> 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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