Edson/Wolfgang: Thank you very much for your inputs. Agree on the evaluation criteria - that the list of questions can be long and deep - and to be honest, I am not sure what those might be. Clearly, the approach to the ecosystem, support model and costs, skills sets etc. all play a role in addition to the difference in the capabilities of the engines themselves.
I will check out the Drools list list as well and again, look forward to inputs from this group. On Sat, Jan 1, 2011 at 8:14 PM, Edson Tirelli <[email protected]> wrote: > Hi, > > I will abstain myself from discussing Drools specific features in > this list, in respect to the other users and due to my involvement > with the other project, but I can tell you that if your bias is > towards Jess, go for it. As we all know it is an excellent engine, and > if we look at the rules engine alone, the choice between Jess and > Drools Expert IMHO is purely a matter of taste (syntax and API). The > differences between the 2 products will be more salient when you start > throwing into your analysis all other requirements, both functional > and non-functional, for your use case, as well as looking at the > ecosystem and other modules/products developed around them. > > Feel free to ask the Drools specific questions at the Drools > mailing list. Community there is also very friendly and active. > > Cheers, > Edson > > > 2011/1/1 dc tech <[email protected]>: > > Thank's Edson. Will check it out. > > Drools seems to have come a long compared to when I last looked at it - > > given that you have a foot in both camps, any wisdom and guidance would > much > > appreciated. My bias is towards Jess, perhaps since I got introduced to > > rules engines with the excellent Jess book but is it worth looking at > > Drools? I like the interactive 'protype'ability with Jess using the > shell > > (still on 6.1). Does Drools have similar intractivity? We are developing > > using j > > jRuby (RoR) or Java. > > Thanks! > > On Fri, Dec 31, 2010 at 3:58 PM, Edson Tirelli <[email protected]> > wrote: > >> > >> May I suggest you take a look at Tohu? > >> > >> http://community.jboss.org/wiki/Tohu > >> > >> It is a small framework to do, it seems, exactly what you > >> described. It is built on top of Drools, but even if you prefer to > >> write your own framework on top of Jess, it can probably give you > >> ideas for your own design. Need to say, though, that I never used it > >> myself, so not sure how good/bad it is, but the video demo is nice. > >> > >> > Lets not forget, even the Drools reference area (and JBoss Rules / > >> > Drools Developer Book) recommends you read: "Jess in Action: Java > Rule-based > >> > Systems" > >> > >> It is an excellent book for people that want to learn about > >> Rule-based Systems, so why not recommend it? :) Being a Drools > >> developer, I can tell you that we always had a good relationship with > >> the Jess community, and we have much more to gain by cooperating than > >> competing. That is not to detract from one engine or the other, it is > >> just the open source way of promoting innovation and education and > >> building upwards from the shoulders of the giants that came first... > >> :) > >> > >> Cheers and Happy New Year! > >> > >> Edson > >> > >> > >> 2010/12/31 dc tech <[email protected]>: > >> >>> Perhaps a little, but not greatly. .... > >> > Am happy to hear. Jess was my first introduction to rules engines 4-5 > >> > years > >> > back but did not use it for a production system. Now we are looking to > >> > build > >> > a 'guided navigation' type of app using Jess where the rules determine > >> > what > >> > steps does a user need to do. I am really excited to be able to use a > >> > rules > >> > engine for that type of application; I am sure many of you have built > >> > similar things. Will keep you posted on questions/findings/lessons. > >> > Not having done real development for many years, I really enjoyed > using > >> > the > >> > Jess shell (still v6, from the book) and actually build small > prototypes > >> > with rules. > >> > Agree on the Drools making rules more accessible. > >> > > >> > On Thu, Dec 30, 2010 at 3:17 PM, Socrates Frangis > >> > <[email protected]> > >> > wrote: > >> >> > >> >> Agree with Donald, were on holiday. > >> >> > >> >> "Any impact from things like jBoss rules or other engines?" > >> >> -Perhaps a little, but not greatly. I will applaud Red Hat for > >> >> exposing more and more people to rule engines through open source > >> >> however. > >> >> > >> >> With that said, I think the many users of Jess stick with it due to > >> >> it's maturity and 'rule engine features' as apposed to the convenient > >> >> bundling of open source middle-ware. I have the feeling that many > will > >> >> get introduced to rule engines through Drools now, but when searching > >> >> for something that gets the job done they will sway elsewhere. > >> >> > >> >> Lets not forget, even the Drools reference area (and JBoss Rules / > >> >> Drools Developer Book) recommends you read: > >> >> "Jess in Action: Java Rule-based Systems" > >> >> > >> >> > >> >> On Thu, Dec 30, 2010 at 8:26 AM, dc tech <[email protected]> > wrote: > >> >> > Rejoining the Jess community after a multi-year hiatus and notice > >> >> > that > >> >> > the > >> >> > mailing list has been very quiet. I am curious to see how Jess is > >> >> > doing > >> >> > now > >> >> > a days? Any impact from things like jBoss rules or other engines? > Is > >> >> > the > >> >> > community still pretty active? > >> >> > Happy Holidays to everyone ! > >> >> > >> >> > >> >> > >> >> -- > >> >> V/R > >> >> -Socrates Frangis > >> >> -Mathematician & Software Engineer > >> >> > >> >> > >> >> > >> >> > >> >> -------------------------------------------------------------------- > >> >> To unsubscribe, send the words 'unsubscribe jess-users > [email protected]' > >> >> in the BODY of a message to [email protected], NOT to the list > >> >> (use your own address!) List problems? Notify > >> >> [email protected]. > >> >> -------------------------------------------------------------------- > >> >> > >> > > >> > > >> > >> > >> > >> > >> -------------------------------------------------------------------- > >> To unsubscribe, send the words 'unsubscribe jess-users [email protected]' > >> in the BODY of a message to [email protected], NOT to the list > >> (use your own address!) List problems? Notify > [email protected]. > >> -------------------------------------------------------------------- > >> > > > > > > > > -- > Edson Tirelli > JBoss Drools Core Development > JBoss by Red Hat @ www.jboss.com > > > > > -------------------------------------------------------------------- > To unsubscribe, send the words 'unsubscribe jess-users [email protected]' > in the BODY of a message to [email protected], NOT to the list > (use your own address!) List problems? Notify [email protected]. > -------------------------------------------------------------------- > >
