[jboss-jira] [JBoss JIRA] (DROOLS-1420) (int) ($p * 1_000.0) throws a misleading exception

[Mario Fusco (JIRA)]

     [ https://issues.jboss.org/browse/DROOLS-1420?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mario Fusco resolved DROOLS-1420.
---------------------------------
    Fix Version/s: 7.0.0.CR1
       Resolution: Done


Fixed by https://github.com/droolsjbpm/drools/commit/d70058bb6ea7516a0054ef5063d94d173cda479f

> (int) ($p * 1_000.0) throws a misleading exception
> --------------------------------------------------
>
>                 Key: DROOLS-1420
>                 URL: https://issues.jboss.org/browse/DROOLS-1420
>             Project: Drools
>          Issue Type: Bug
>          Components: core engine
>    Affects Versions: 7.0.0.Beta5
>            Reporter: Geoffrey De Smet
>            Assignee: Mario Fusco
>             Fix For: 7.0.0.CR1
>
>
> This fails with *$p cannot be resolved to a variable*:
> {code}
> rule R when
>   Cheese($p : price)
> then
>   int b = (int) ($p * 1_000.0); // FAILS, because $p cannot be resolved ?!
> end
> {code}
> That error message is nonsense. It should just work. If it doesn't due to ECJ, it should say something like "cannot be cast".
> This works in java:
> {code}
>         int a = 42;
>         int b = ((int) (a * 1_000.0));
> {code}
> Removing the underscore fixes it:
> {code}
> rule R when
>   Cheese($p : price)
> then
>   int b = (int) ($p * 1000.0); // SUCCESS
> end
> {code}
> Regardless of an upstream ECJ problem (which should be reported if that's indeed the problem), the error message is wrong and send me on a wild goose hunt.



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