[jboss-jira] [JBoss JIRA] Closed: (JBRULES-965) Unexpected token 'not'

[Edson Tirelli (JIRA)]

     [ http://jira.jboss.com/jira/browse/JBRULES-965?page=all ]

Edson Tirelli closed JBRULES-965.
---------------------------------

    Fix Version/s:  4.0.0.MR4
       Resolution: Rejected

Brian,

The problem is that you have 2 maps that match your input text. In your mapping file you have, in that order:

[condition][]- {field} is {value}={field} == {value}
[condition][]- {field} is not alpha only={field} not matches "[ a-zA-Z]"

As you can see, your input:

- city is not alpha only

Will match your mappings in the given order, matching the first one above instead of the second. So in the first mapping above, {field} will be "city" and {value} will be "not alpha only", causing the problem.

One way of dealing with such situations is to always write more specific mappings first in your mapping file. The other way is make sure you don't have more than one pattern that matches the same input.

For this simple case, if you move the first pattern above to the end of you DSL mapping file, it will solve the problem, but as I guess this is part of a much more complex case, I suggest you to change the mapping to avoid such situations.


> Unexpected token 'not' 
> -----------------------
>
>                 Key: JBRULES-965
>                 URL: http://jira.jboss.com/jira/browse/JBRULES-965
>             Project: JBoss Rules
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: Drl Parser/Builder
>    Affects Versions:  4.0.0.MR3
>         Environment: Win XP, Drools MR3 (Snapshot from 7/2/2007)
>            Reporter: Brian Enderle
>         Assigned To: Edson Tirelli
>            Priority: Minor
>             Fix For:  4.0.0.MR4
>
>         Attachments: Address.drl, Address.dsl, Address.java
>
>
> The following rule works in a DRL file 
> $i : Address( city not matches "[ a-zA-Z]" )
> But when entered into a DSL file an "Unexpected token 'not'" error is thrown.
> DRL file:                                                           DSL entry:
> There is a Address                                        $i : {Instance}()
>   - city is not alpha only                                  {field} not matches "[ a-zA-Z]"
> After further coding I find that this issue also applies to 'not matches' whcih was working prior to Snapshot from 7/2/2007.

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