[xmlblaster] NullPointer exception

[David Kerry <xml at navahonetworks.com>]

Hello,

We've been using the latest xmlblaster for a bit now and have started
getting these popping out once in a while in the logs:


[Sep 28, 2005 8:56:55 AM ERROR XmlBlaster.SOCKET.tcpListener-edserver_prod AvailabilityChecker] publishArr() failed: XmlBlasterException serverSideException=true node=[xmlBlaster_172_23_254_15_10412]
 location=[RequestBroker-/node/xmlBlaster_172_23_254_15_10412]
java.lang.NullPointerException
stackTrace=java.lang.NullPointerException
        at org.xmlBlaster.engine.TopicHandler.entryDestroyed(TopicHandler.java:946)
        at org.xmlBlaster.engine.MsgUnitWrapper.toDestroyed(MsgUnitWrapper.java:580)
        at org.xmlBlaster.engine.MsgUnitWrapper.setReferenceCounter(MsgUnitWrapper.java:309)
        at org.xmlBlaster.engine.TopicHandler.publish(TopicHandler.java:676)
        at org.xmlBlaster.engine.RequestBroker.publish(RequestBroker.java:1665)
        at org.xmlBlaster.engine.RequestBroker.publish(RequestBroker.java:1471)
        at org.xmlBlaster.engine.RequestBroker.publish(RequestBroker.java:1465)
        at org.xmlBlaster.engine.XmlBlasterImpl.publishArr(XmlBlasterImpl.java:194)
        at org.xmlBlaster.protocol.socket.Executor.receive(Executor.java:312)
        at org.xmlBlaster.protocol.socket.HandleClient.handleMessage(HandleClient.java:211)
        at org.xmlBlaster.protocol.socket.HandleClient.run(HandleClient.java:320)
        at java.lang.Thread.run(Thread.java:534)
errorCode=internal.nullpointer message=#exported errorCode=internal.publish: An internal error occurred when processing a publish() request. /node/xmlBlaster_172_23_254_15_10412/client/edserver_prod/
-14
        at org.xmlBlaster.util.XmlBlasterException.convert(XmlBlasterException.java:664)
        at org.xmlBlaster.util.XmlBlasterException.convert(XmlBlasterException.java:653)
        at org.xmlBlaster.engine.RequestBroker.publish(RequestBroker.java:1685)
        at org.xmlBlaster.engine.RequestBroker.publish(RequestBroker.java:1471)
        at org.xmlBlaster.engine.RequestBroker.publish(RequestBroker.java:1465)
        at org.xmlBlaster.engine.XmlBlasterImpl.publishArr(XmlBlasterImpl.java:194)
        at org.xmlBlaster.protocol.socket.Executor.receive(Executor.java:312)
        at org.xmlBlaster.protocol.socket.HandleClient.handleMessage(HandleClient.java:211)
        at org.xmlBlaster.protocol.socket.HandleClient.run(HandleClient.java:320)
        at java.lang.Thread.run(Thread.java:534)
versionInfo=version=1.0.6,revision=exported,os.name=Linux,os.version=2.4.23,java.vm.vendor=Sun Microsystems Inc.,java.vm.version=1.4.2_03-b02,os.arch=i386,build.timestamp=08/10/2005 01:45 PM,build.ja
va.vendor=Sun Microsystems Inc.,build.java.version=1.4.2_06
errorCode description=http://www.xmlblaster.org/xmlBlaster/doc/requirements/admin.errorcodes.listing.html#internal.nullpointer



Restarting xmlblaster makes it go away (for now), but I suspect it may
return.


While all this was going on, I also got errors from the client attempting to
subscribe.  The error in the server log is:

[Oct 1, 2005 7:24:18 PM WARN  XmlBlaster.SOCKET.tcpListener-core900_staging_ctb XmlKeyDom.InvalidQuery] Sorry, can't access, query syntax is wrong for '//service[.="ivs-123.com" and ../type[.="response"]]|//service[.="ivs-abc" and ../type[.="response"]]' : java.lang.NullPointerException

The error the client received was:

2005-10-01 19:24:18,358 ERROR [XmlBlaster.PingTimer] [logic.XmlBlasterSyncLogic]:  exception subscribing to messages:XmlBlasterException errorCode=[user.query.invalid] serverSideException=true location=[XmlKeyDom] message=[#exported Sorry, can't access, query syntax of '//service[.="ivs-123.com" and ../type[.="response"]]|//service[.="ivs-abc" and ../type[.="response"]]' is wrong : java.lang.NullPointerException] [See URL http://www.xmlblaster.org/xmlBlaster/doc/requirements/admin.errorcodes.listing.html#user.query.invalid]

errorCode=user.query.invalid message=#exported Sorry, can't access, query syntax of '//service[.="ivs-123.com" and ../type[.="response"]]|//service[.="ivs-abc" and ../type[.="response"]]' is wrong : java.lang.NullPointerException
        at org.xmlBlaster.util.XmlBlasterException.parseByteArr(XmlBlasterException.java:637)
        at org.xmlBlaster.protocol.socket.Parser.getException(Parser.java:482)
        at org.xmlBlaster.protocol.socket.Executor.receive(Executor.java:426)
        at org.xmlBlaster.client.protocol.socket.SocketCallbackImpl.run(SocketCallbackImpl.java:189)
        at java.lang.Thread.run(Thread.java:534)



-- 
David Kerry