[rules-users] Insert to non-existing entry point causing NPE in drools server?

[dunnlow]

I am sending events to drools integration server (5.5).  I have a good number
of rules so I am looking at using entry points to speed things up.  My
client app will send to an entry point based on the value of one of the
event attributes.  While I will typically know all possible attributes, I
may occasionally get an event that has an attribute value that I have 1) not
foreseen, and/or 2) don't need any rules for.  Whenever I insert an event to
an endpoint however for which I have no rules, I get a nullpointerexception
from the drools server.

Is there a way to handle this?  I am considering having my client app do a
lookup in the ksession (which is persisted to a db) to determine all of the
entry points and then, if the event attribute received isn't one of them,
send to the DEFAULT entry point.  Is there an easier way?

Here's a sample use case:  I have am receiving events based on automobile
models.  I have rules for Ford models at the Ford entry point and Honda
models at the Honda entry point.  I don't care about a car if it's a Toyota,
so I have no rules (/entry points) for them. However, all events go to the
rule engine.  If I send the Toyota event to the drools server, I get an
internal server error from the drools server.

Any thoughts?

Thank you,
-J



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