[jboss-jira] [JBoss JIRA] Created: (JBAS-6138) ImmutableArrayList improperly mixes delegation and subclassing

[Brian Stansberry (JIRA)]

ImmutableArrayList improperly mixes delegation and subclassing
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                 Key: JBAS-6138
                 URL: https://jira.jboss.org/jira/browse/JBAS-6138
             Project: JBoss Application Server
          Issue Type: Bug
      Security Level: Public (Everyone can see)
          Components: Clustering
    Affects Versions: JBossAS-4.2.3.GA, JBossAS-4.2.2.GA, JBossAS-4.2.1.GA, JBossAS-4.2.0.GA
            Reporter: Brian Stansberry
            Assignee: Brian Stansberry
             Fix For: JBossAS-4.2.4.GA


The org.jboss.ha.framework.interfaces.ImmutableArrayList class subclasses ArrayList (for API compatibilty reasons) but delegates most calls to a wrapped ArrayList.  Except for calls to iterator() and listIterator() which call super.listIterator(). These superclass calls are incorrect; they should be delegated as well.

This bug leads to incorrect iterator behavior on OpenJDK, whose ArrayList implementation is different from the Sun JDK's in ways that expose the invalidity of calling the superclass method.  The calls work on Sun by pure luck.

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