[jboss-jira] [JBoss JIRA] (DROOLS-882) Variable on left of matches operator causes 'unable to resolve method' error

[Mario Fusco (JIRA)]

     [ https://issues.jboss.org/browse/DROOLS-882?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mario Fusco resolved DROOLS-882.
--------------------------------
    Fix Version/s: 6.3.0.CR2
       Resolution: Done


Fixed in mvel with this commit https://github.com/mvel/mvel/commit/fa86874affd7005e7e2bba9fd7977a8b65965b28

The fix will be available with mvel 2.2.7.Final

> Variable on left of matches operator causes 'unable to resolve method' error
> ----------------------------------------------------------------------------
>
>                 Key: DROOLS-882
>                 URL: https://issues.jboss.org/browse/DROOLS-882
>             Project: Drools
>          Issue Type: Bug
>          Components: core engine
>    Affects Versions: 6.2.0.Final
>            Reporter: Andrew Bickerton
>            Assignee: Mario Fusco
>             Fix For: 6.3.0.CR2
>
>         Attachments: MatchesTest.java
>
>
> Using a variable on the left of 'matches' fails in 6.2.0.FInal, when it worked in 6.1.0.Final.  E.g.
> when
>   Fact( $field : field )
>   RegEx( $field matches pattern )
> results in
> [Error: unable to resolve method: defaultpkg.RegEx.$field() [arglength=0]]
> [Near : {... $field ~= pattern ....}]
> This can be worked around for the positive case by simply moving the constraint, e.g.
> when
>   RegEx( $pattern : pattern )
>   Fact( field matches $pattern )
> But it makes it impossible to find facts that are not matched by any regex, e.g.
> when
>   Fact( $field : field )
>   not RegEx( $field matches pattern )



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