[rules-dev] two great bugs

[Michael Neale]

I can't think of a better long weekend !

2 bugs !

On 4/8/07, Mark Proctor <mproctor at codehaus.org> wrote:
>
> Found two great bugs this weekend:
>
> http://jira.jboss.com/jira/browse/JBRULES-778 (fixed)
> when
>    $p : Person( $cheese : cheese )
> then
>    modify( $cheese )
> end
> The above would actually use the $p fact handle for the modify, causing
> the handle to reference $cheese instead of $p. This is now fixed, field
> bindings now have their fact hand cleared, so on modify when the fact
> handle is null it retrieves it from the working memory.
>
> http://jira.jboss.com/jira/browse/JBRULES-780 (in the process of fixing)
> no-loop is currently trapped with:
>         // if the current Rule is no-loop and the origin rule is the
> same then return
>         if ( this.rule.getNoLoop() && this.rule.equals(
> context.getRuleOrigin() ) ) {
>             return;
>         }
>
> That means we have a tuple that reached the terminal node, but is not
> added to the memory or an activation created and attached. Thus on a
> modify or a retract the Tuple reaches the RuleTerminalNode and causes a
> NullPointer.
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>
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