[jboss-jira] [JBoss JIRA] Updated: (JBRULES-1654) eval() Incorrectly Evaluating BigDecimal to False

[Mark Proctor (JIRA)]

     [ https://jira.jboss.org/jira/browse/JBRULES-1654?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mark Proctor updated JBRULES-1654:
----------------------------------

    Fix Version/s: 4.0.8
                       (was: 5.0.0.M5)


This works in 5.0.x. Turns out it's an issue with older versions of MVEL, this will be fixed in 4.0.x by upgrading to latest MVEL. I've added unit tests to 5.0.x anyway, to detect regressions.

> eval() Incorrectly Evaluating BigDecimal to False
> -------------------------------------------------
>
>                 Key: JBRULES-1654
>                 URL: https://jira.jboss.org/jira/browse/JBRULES-1654
>             Project: JBoss Drools
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>    Affects Versions: 4.0.7
>            Reporter: Andrew Frederico
>            Assignee: Edson Tirelli
>             Fix For: 4.0.8
>
>
> Even when the condition of an eval() in the "where" block results in TRUE when used in normal code the rule does not fire directly because of the eval() statement.
> My class definition:
> class BuyOffer() {
>    private BigDecimal amount;
>    ...
> }
> The getter from the class:
> public BigDecimal getAmount() {
>    return amount;
> }
> Assuming that I've setAmount() to something non-zero earlier in the code, the line of code that evaluates to TRUE (verified by System.outing the result):
> buyOffer.getAmount().compareTo(BigDecimal.ZERO) > 0
> My eval() statement:
> eval( buyOffer.getAmount().compareTo(BigDecimal.ZERO) > 0 )
> With eval() in place the rule does NOT fire.  When removed it DOES and the following line of code prints TRUE.
> System.out.printf("buyOffer.getAmount().compareTo(BigDecimal.ZERO) > 0: %s\n", buyOffer.getAmount().compareTo(BigDecimal.ZERO) > 0);

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