[rules-users] From 4.0.6 to 4.0.4 to 4.0.3

[Mark Proctor]

Chris Woodrow wrote:
> Hi,
> I would to share our experience about recent versions of Drools.
> We found out that 4.0.6 was out on last wednesday, so we decided to 
> move up from 4.0.3 to 4.0.6. <http://4.0.6.> We made a few tests but 
> we counted on the fact that backward compatibility was provided. On 
> friday, I went on Drools website and found out that version 4.0.6 was 
> replaced by 4.0.4 whithout any more explaination, I made a research on 
> this list to find out that you had to make a roll back. At the same 
> time we found out a drools bug on our app :
>
> Caused by: java.lang.NullPointerException
>         at 
> org.drools.base.evaluators.ObjectFactory$ObjectEqualsComparator.equals(ObjectFactory.java:561)
>         at 
> org.drools.base.evaluators.ObjectFactory$ObjectNotEqualEvaluator.evaluate(ObjectFactory.java:158)
>         at 
> org.drools.rule.LiteralRestriction.isAllowed(LiteralRestriction.java:61)
>         at 
> org.drools.rule.LiteralConstraint.isAllowed(LiteralConstraint.java:82)
>         at 
> org.drools.reteoo.AccumulateNode.assertTuple(AccumulateNode.java:156)
>         at 
> org.drools.reteoo.CompositeTupleSinkAdapter.propagateAssertTuple(CompositeTupleSinkAdapter.java:30)
>         at org.drools.reteoo.FromNode.assertTuple(FromNode.java:90)
>         at 
> org.drools.reteoo.SingleTupleSinkAdapter.propagateAssertTuple(SingleTupleSinkAdapter.java:20)
>         at org.drools.reteoo.JoinNode.assertTuple(JoinNode.java:107)
>         at 
> org.drools.reteoo.SingleTupleSinkAdapter.propagateAssertTuple(SingleTupleSinkAdapter.java:20)
>         at org.drools.reteoo.JoinNode.assertObject(JoinNode.java:151)
>         at 
> org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:22)
>         at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:140)
>         at 
> org.drools.reteoo.CompositeObjectSinkAdapter.propagateAssertObject(CompositeObjectSinkAdapter.java:318)
>         at 
> org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:153)
>         at org.drools.reteoo.Rete.assertObject(Rete.java:175)
>         at 
> org.drools.reteoo.ReteooRuleBase.assertObject(ReteooRuleBase.java:192)
>         at 
> org.drools.reteoo.ReteooWorkingMemory.doInsert(ReteooWorkingMemory.java:71)
>         at 
> org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:909)
>         at 
> org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:881)
>         at 
> org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:682)
>
> We had to deploy our app on friday, so we decieded to rollback to 
> 4.0.4 to find out that we had the same error. So we decided to 
> rollback to 4.0.3, I went to the download section of your site, and 
> found out that previous versions where just unavailable, which is 
> unacceptable. Obviously, I found it on our SVN, but I wasn't very 
> happy about this.
Its "unnaccptable"?  that we don't maintain free community resources at 
our descretion? If binaries are not available for download, you can 
always build your own:
http://anonsvn.labs.jboss.com/labs/jbossrules/tags/

Or you could pay for priority support and full access to downloads. Btw 
the paid version also goes through extra levels of QA, by dedicated 
teams, so you avoid this.
>
> Here are my conclusions :
> - We are not going to change our version of Drools soon
> - Please give us access to previous versions
>
> Chris
> ------------------------------------------------------------------------
>
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>   

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