BRMS doesn't short-circuit with multiple evals with OR

Solution Unverified - Updated -

Issue

  • I have null checks in the first eval and actual value check in the next eval. When m.getValue() is null, since the first eval is true expecting second eval won't be called. But it results in NullPointerException.
rule "Hello World"
    when
        m : Message()
        and (eval(m.getValue() == null)
          or eval(m.getValue().equals("hello"))
        )
    then
        ...
end

Environment

  • Red Hat JBoss BRMS
    • 6.2

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