[rules-users] Null pointer when inserting into working memory

Scott Burrows scottjburrows at gmail.com
Thu Oct 15 13:02:46 EDT 2009


Have not tried this with 5.

Don't know if this makes a difference or not but I just added the following
to our working memory config:

rbconf.setShadowProxyExcludes("com.m2syscorp.i24card.rulesengine.facts.CountryGroup
com.m2syscorp.i24card.rulesengine.facts.MerchantCategoryGroup");

Neither of those class facts are modified.  We insert them, match on them,
retract them.

Scott




On Thu, Oct 15, 2009 at 12:27 PM, Scott Burrows <scottjburrows at gmail.com>wrote:

>
> Hi all,
>
> Using 4.0.7.
>
> I am getting this null pointer when doing an Insert into working memory.
>
> I know the object I am inserting is not null.
>
>
> java.lang.NullPointerException
> at
> org.drools.util.PrimitiveLongStack$Page.remove(PrimitiveLongStack.java:137)
> at org.drools.util.PrimitiveLongStack.pop(PrimitiveLongStack.java:69)
> at
> org.drools.common.AbstractFactHandleFactory.newFactHandle(AbstractFactHandleFactory.java:44)
> at
> org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:785)
> at
> org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:684)
>
>
> Any idea what might be causing this?
>
>
> Scott
>
>
>
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