[jboss-jira] [JBoss JIRA] Closed: (JBRULES-1170) ClassCastException using dynamic salience

[Mark Proctor (JIRA)]

     [ http://jira.jboss.com/jira/browse/JBRULES-1170?page=all ]

Mark Proctor closed JBRULES-1170.
---------------------------------

    Fix Version/s: 4.0.2
       Resolution: Done

fixed.

> ClassCastException using dynamic salience
> -----------------------------------------
>
>                 Key: JBRULES-1170
>                 URL: http://jira.jboss.com/jira/browse/JBRULES-1170
>             Project: JBoss Rules
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>    Affects Versions: 4.0.1
>            Reporter: Yuri de Wit
>         Assigned To: Mark Proctor
>             Fix For: 4.0.2
>
>
> I have the following dynamic salience:
> 	salience ( -10000 / (c.size * t.size) )
> that throws a ClassCastException when c.size * t.size is an odd number:
> java.lang.ClassCastException: java.lang.Double
> 	at org.drools.base.mvel.MVELSalienceExpression.getValue(MVELSalienceExpression.java:33)
> I then tried:
> 	salience ( (int)-10000 / (c.size * t.size) )
> or
> 	salience ( (int)( -10000 / (c.size * t.size) ))
> But got a MVEL error compiling the expression.
> The solution I found was to use a function:
> 	salience ( -1 * FN.priority(c.size, t.size) )
> Note that I had to use "-1 *" because just "-" gives me a MVEL error compiling the expression.

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