[jboss-jira] [JBoss JIRA] (DROOLS-30) NullPointerException calling Row.toString() without calling Row.get() first

[Ryan Nideffer (JIRA)]

Ryan Nideffer created DROOLS-30:
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             Summary: NullPointerException calling Row.toString() without calling Row.get() first
                 Key: DROOLS-30
                 URL: https://issues.jboss.org/browse/DROOLS-30
             Project: Drools
          Issue Type: Bug
      Security Level: Public (Everyone can see)
    Affects Versions: 5.5
            Reporter: Ryan Nideffer
            Assignee: Mark Proctor


The object passed to methods of a ViewChangedEventListener that is registered when opening a live query is an instance of org.drools.runtime.rule.impl.RowAdapter and its toString() method throws a NullPointerException if you do not first call get(). This is because toString() assumes the member variable 'factHandles' has been populated, whereas all other accessor methods such as get() first null-check 'factHandles', and if null sets it to the value of this.leftTuples.toFactHandles().

toString in this case should perform the same populating of factHandles, or at the very least perform a null-check of factHandles so that an exception is not thrown.

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