ESB - NullPointerException thrown when sending events to subscribers
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                 Key: CARBON-5081
                 URL: https://wso2.org/jira/browse/CARBON-5081
             Project: WSO2 Carbon
          Issue Type: Bug
          Components: Eventing
         Environment: Windows XP, JDL1.5.0_14, FF3
            Reporter: Evanthika Amarasiri
            Assignee: Hiranya Jayathilaka
            Priority: High


When sending events to subscribers a NullPointerException is thrown

[2009-08-27 17:11:06,515] DEBUG - LogMediator Start : Log mediator
[2009-08-27 17:11:06,515]  INFO - LogMediator To: 
http://localhost:8281/services/EventingProxy, WSAction: urn:event, SOAPAction: 
urn:event, ReplyTo: http://www.w3.org/2005/08/addressing/none, MessageID: urn:u
uid:8D0DCACDC381A886961251373266409, Direction: request, Envelope: <?xml 
version='1.0' encoding='utf-8'?><soapenv:Envelope 
xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/";><soapenv:Header 
xmlns:wsa="
http://www.w3.org/2005/08/addressing";><aip:Topic 
xmlns:aip="http://apache.org/aip";>synapse/event/test</aip:Topic><wsa:To>http://localhost:8281/services/EventingProxy</wsa:To><wsa:ReplyTo><wsa:Address>http://w
ww.w3.org/2005/08/addressing/none</wsa:Address></wsa:ReplyTo><wsa:MessageID>urn:uuid:8D0DCACDC381A886961251373266409</wsa:MessageID><wsa:Action>urn:event</wsa:Action></soapenv:Header><soapenv:Body><m:placeOrd
er xmlns:m="http://services.samples";>
    <m:order>
        <m:price>10.10</m:price>
        <m:quantity>1000</m:quantity>
        <m:symbol>GOOG</m:symbol>
    </m:order>
</m:placeOrder></soapenv:Body></soapenv:Envelope>
[2009-08-27 17:11:06,515] DEBUG - LogMediator End : Log mediator
[2009-08-27 17:11:06,515] DEBUG - EventPublisherMediator Mediation for Event 
Publisher started
[2009-08-27 17:11:06,515] DEBUG - SequenceMediator End : Sequence 
<PublicEventSource>
[2009-08-27 17:11:06,515] DEBUG - StatisticsRecord Start to reportForComponent 
statistics for : PublicEventSource
Exception in thread "SynapseWorker-1" java.lang.NullPointerException
        at 
org.apache.synapse.eventing.filters.TopicBasedEventFilter.match(TopicBasedEventFilter.java:68)
        at 
org.apache.synapse.eventing.managers.DefaultInMemorySubscriptionManager.getMatchingSubscriptions(DefaultInMemorySubscriptionManager.java:119)
        at 
org.apache.synapse.eventing.SynapseEventSource$EventDispatcher.run(SynapseEventSource.java:197)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
        at java.lang.Thread.run(Thread.java:595)

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