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

[Andrew Bickerton (JIRA)]

Andrew Bickerton created DROOLS-882:
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             Summary: 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


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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