[rules-users] Missing space when using DSL and Guvnor

[Jason Smith]

Hey, didn't mean to come off as critical today.  You are doing a good job on this, and the basic rules stuff is spot on as far as functionality goes.  Words like *refactor* and *scrub* are just artifacts of code that has gone through several revision cycles (and I helped).  Functionally, it's working great, as intended, with no compromises in the design - or at least tiny ones.  If the code is a little hard to modify (due to a couple of years of active maintenance), that's not a big deal.

It really may be a very small deal.  It looks to me like this code is about to enter a fairly stable time.  It's pretty close to feature-complete, and it's working.  So then it's your call if and when you want to spend the time and effort to pretty it up a bit.  In a code base as big as this one, with as many things as need to be done, there's plenty of other low hanging fruit...  :-)

Have a good weekend, and try not to work on this stuff.

Jason Smith
Software Engineer
InfoTrust Group, Inc.
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From: rules-users-bounces at lists.jboss.org [rules-users-bounces at lists.jboss.org] On Behalf Of Paul R. [reverselogic at gmail.com]
Sent: Friday, April 30, 2010 5:40 PM
To: Rules Users List
Subject: Re: [rules-users] Missing space when using DSL and Guvnor

Hi Jeff,

I logged a bug for this one a while back, here's the JIRA, patch details included.

https://jira.jboss.org/jira/browse/GUVNOR-520

I would appreciate it if somebody could commit this for me :)

Cheers,

Paul

2010/4/30 Esteban Aliverti <esteban.aliverti at gmail.com<mailto:esteban.aliverti at gmail.com>>
It sounds like a bug. Can you double check it and create a jira issue please?

best,

2010/4/29 Doyel,Jeff <JDOYEL at cerner.com<mailto:JDOYEL at cerner.com>>
I am setting up a very simple example using a DSL and Guvnor.  My DSL is as follows:

[when]Age is less than {age} years old=AgeFact(ageInYears < {age})

When I attempt to create a new Business Rule using the Guvnor I can select the above expression just fine and the sentence displays as expected.  I then fill in the years with a numeric value (4) and validate.  Upon validation I receive the following error.

[Age Test Rule] [ERR 101] Line 4:2 no viable alternative at input 'Age' in rule "Age Test Rule"

I then view the source and it looks like this.

rule "Age Test Rule"
        dialect "mvel"
        when
                Age is less than 4years old
        then
end

I noticed that there is no space between the ‘4’ and the word ‘years’.  However, in my DSL sentence there is a space between {age} and years.  Another interesting thing, if I enter the number 4 followed by a space in the Guvnor form then the rule validates correctly.  Is this a bug or is it something I am doing wrong in my DSL?

Thanks,
Jeff

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