[jboss-jira] [JBoss JIRA] Created: (JBRULES-2113) NPE thrown by LeftTuple.get() method

[Tom Murphy (JIRA)]

NPE thrown by LeftTuple.get() method
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                 Key: JBRULES-2113
                 URL: https://jira.jboss.org/jira/browse/JBRULES-2113
             Project: JBoss Drools
          Issue Type: Bug
      Security Level: Public (Everyone can see)
    Affects Versions: 5.0.0.CR1
         Environment: FOund in 5.0.0.CR1 - Community version. Windows XP
            Reporter: Tom Murphy
            Assignee: Mark Proctor


the get() method on LeftTuple throws a null exception under certain circumstances, which are as yet undetermined.
Here is the Code:

public InternalFactHandle get(final int index) {
        LeftTuple entry = this;
        while ( entry.index != index ) {
            entry = entry.parent;
        }
        return entry.handle;
    }

Note that the loop moves to each parent in succession, but never checks for entry != null. If it does get to the end of the chain, it will throw an NPE

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