[xmlblaster] Subscription Invocation Exception
After running successfully for several months, we received the following exception when one of the clients connected to xmlBlaster. The subscriptions have not changed in over a year. This occured on 1.6.1 and as far as I know this is the first time that we have seen this particular issue. Any thoughts on what could have happened? INFO | jvm 2| 2007/12/12 17:12:38 | Dec 12, 2007 5:12:38 PM INFO 238-XmlBlaster.socket_ssl.SSL.tcpListener-my.account RL10 org.xmlBlaster.protocol.socket.HandleClient handleMessage: Client connected, coming from host=/192.168.100.100 port=13374 INFO | jvm 2| 2007/12/12 17:12:38 | Dec 12, 2007 5:12:38 PM INFO 238-XmlBlaster.socket_ssl.SSL.tcpListener-my.account RL10 org.xmlBlaster.util.dispatch.DispatchConnection handleTransition: Connection 'socket_ssl' transition UNDEF - ALIVE: Success, DispatchConnection-callback:/node/MYNODE/client/my.account/-47 connected. INFO | jvm 2| 2007/12/12 17:12:38 | Dec 12, 2007 5:12:38 PM INFO 238-XmlBlaster.socket_ssl.SSL.tcpListener-my.account RL10 org.xmlBlaster.authentication.Authenticate connect: Successful login for client /node/MYNODE/client/my.account/-47, session expires after [ 1 h 0 millis ], 1 of 10 sessions are in use. INFO | jvm 2| 2007/12/12 17:12:38 | java.lang.reflect.InvocationTargetException INFO | jvm 2| 2007/12/12 17:12:38 | at sun.reflect.GeneratedMethodAccessor10.invoke(Unknown Source) INFO | jvm 2| 2007/12/12 17:12:38 | at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) INFO | jvm 2| 2007/12/12 17:12:38 | at java.lang.reflect.Method.invoke(Unknown Source) INFO | jvm 2| 2007/12/12 17:12:38 | at org.xmlBlaster.util.XmlNotPortable.getNodeSetFromXPath(XmlNotPortable.java:138) INFO | jvm 2| 2007/12/12 17:12:38 | at org.xmlBlaster.engine.xml2java.XmlKeyDom.parseKeyOid(XmlKeyDom.java:125) INFO | jvm 2| 2007/12/12 17:12:38 | at org.xmlBlaster.engine.RequestBroker.queryMatchingKeys(RequestBroker.java:951) INFO | jvm 2| 2007/12/12 17:12:38 | at org.xmlBlaster.engine.RequestBroker.subscribe(RequestBroker.java:648) INFO | jvm 2| 2007/12/12 17:12:38 | at org.xmlBlaster.engine.XmlBlasterImpl.subscribe(XmlBlasterImpl.java:93) INFO | jvm 2| 2007/12/12 17:12:38 | at org.xmlBlaster.util.protocol.RequestReplyExecutor.receiveReply(RequestReplyExecutor.java:483) INFO | jvm 2| 2007/12/12 17:12:38 | at org.xmlBlaster.protocol.socket.HandleClient.handleMessage(HandleClient.java:228) INFO | jvm 2| 2007/12/12 17:12:38 | at org.xmlBlaster.protocol.socket.HandleClient$1.run(HandleClient.java:381) INFO | jvm 2| 2007/12/12 17:12:38 | at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:665) INFO | jvm 2| 2007/12/12 17:12:38 | at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:690) INFO | jvm 2| 2007/12/12 17:12:38 | at java.lang.Thread.run(Unknown Source) INFO | jvm 2| 2007/12/12 17:12:38 | Caused by: javax.xml.xpath.XPathExpressionException INFO | jvm 2| 2007/12/12 17:12:38 | at com.sun.org.apache.xpath.internal.jaxp.XPathImpl.evaluate(Unknown Source) INFO | jvm 2| 2007/12/12 17:12:38 | ... 14 more INFO | jvm 2| 2007/12/12 17:12:38 | Caused by: javax.xml.transform.TransformerException: Unknown error in XPath. INFO | jvm 2| 2007/12/12 17:12:38 | at com.sun.org.apache.xpath.internal.XPath.execute(Unknown Source) INFO | jvm 2| 2007/12/12 17:12:38 | at com.sun.org.apache.xpath.internal.XPath.execute(Unknown Source) INFO | jvm 2| 2007/12/12 17:12:38 | at com.sun.org.apache.xpath.internal.jaxp.XPathImpl.eval(Unknown Source) INFO | jvm 2| 2007/12/12 17:12:38 | ... 15 more INFO | jvm 2| 2007/12/12 17:12:38 | Caused by: java.lang.NullPointerException INFO | jvm 2| 2007/12/12 17:12:38 | at com.sun.org.apache.xml.internal.dtm.ref.dom2dtm.DOM2DTM.getLocalName(Unknown Source) INFO | jvm 2| 2007/12/12 17:12:38 | at com.sun.org.apache.xpath.internal.patterns.NodeTest.execute(Unknown Source) INFO | jvm 2| 2007/12/12 17:12:38 | at com.sun.org.apache.xpath.internal.axes.PredicatedNodeTest.acceptNode(Unknown Source) INFO | jvm 2| 2007/12/12 17:12:38 | at com.sun.org.apache.xpath.internal.axes.AxesWalker.nextNode(Unknown Source) INFO | jvm 2| 2007/12/12 17:12:38 | at com.sun.org.apache.xpath.internal.axes.WalkingIterator.nextNode(Unknown Source) INFO | jvm 2| 2007/12/12 17:12:38 | at com.sun.org.apache.xpath.internal.axes.NodeSequence.nextNode(Unknown Source) INFO | jvm 2| 2007/12/12 17:12:38 | at com.sun.org.apache.xpath.internal.axes.NodeSequence.runTo(Unknown Source) INFO | jvm 2| 2007/12/12 17:12:38 | at com.sun.org.apache.xpath.internal.axes.NodeSequence.setRoot(Unknown Source) INFO | jvm 2| 2007/12/12 17:12:38 | at
Re: [xmlblaster] Subscription Invocation Exception
Jonathan Clark wrote: After running successfully for several months, we received the following exception when one of the clients connected to xmlBlaster. The subscriptions have not changed in over a year. This occured on 1.6.1 and as far as I know this is the first time that we have seen this particular issue. Any thoughts on what could have happened? Same subscribe suddenly does not work anymore ... Michele: Any idea? Marcel INFO | jvm 2| 2007/12/12 17:12:38 | Dec 12, 2007 5:12:38 PM INFO 238-XmlBlaster.socket_ssl.SSL.tcpListener-my.account RL10 org.xmlBlaster.protocol.socket.HandleClient handleMessage: Client connected, coming from host=/192.168.100.100 port=13374 INFO | jvm 2| 2007/12/12 17:12:38 | Dec 12, 2007 5:12:38 PM INFO 238-XmlBlaster.socket_ssl.SSL.tcpListener-my.account RL10 org.xmlBlaster.util.dispatch.DispatchConnection handleTransition: Connection 'socket_ssl' transition UNDEF - ALIVE: Success, DispatchConnection-callback:/node/MYNODE/client/my.account/-47 connected. INFO | jvm 2| 2007/12/12 17:12:38 | Dec 12, 2007 5:12:38 PM INFO 238-XmlBlaster.socket_ssl.SSL.tcpListener-my.account RL10 org.xmlBlaster.authentication.Authenticate connect: Successful login for client /node/MYNODE/client/my.account/-47, session expires after [ 1 h 0 millis ], 1 of 10 sessions are in use. INFO | jvm 2| 2007/12/12 17:12:38 | java.lang.reflect.InvocationTargetException INFO | jvm 2| 2007/12/12 17:12:38 | at sun.reflect.GeneratedMethodAccessor10.invoke(Unknown Source) INFO | jvm 2| 2007/12/12 17:12:38 | at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) INFO | jvm 2| 2007/12/12 17:12:38 | at java.lang.reflect.Method.invoke(Unknown Source) INFO | jvm 2| 2007/12/12 17:12:38 | at org.xmlBlaster.util.XmlNotPortable.getNodeSetFromXPath(XmlNotPortable.java:138) INFO | jvm 2| 2007/12/12 17:12:38 | at org.xmlBlaster.engine.xml2java.XmlKeyDom.parseKeyOid(XmlKeyDom.java:125) INFO | jvm 2| 2007/12/12 17:12:38 | at org.xmlBlaster.engine.RequestBroker.queryMatchingKeys(RequestBroker.java:951) INFO | jvm 2| 2007/12/12 17:12:38 | at org.xmlBlaster.engine.RequestBroker.subscribe(RequestBroker.java:648) INFO | jvm 2| 2007/12/12 17:12:38 | at org.xmlBlaster.engine.XmlBlasterImpl.subscribe(XmlBlasterImpl.java:93) INFO | jvm 2| 2007/12/12 17:12:38 | at org.xmlBlaster.util.protocol.RequestReplyExecutor.receiveReply(RequestReplyExecutor.java:483) INFO | jvm 2| 2007/12/12 17:12:38 | at org.xmlBlaster.protocol.socket.HandleClient.handleMessage(HandleClient.java:228) INFO | jvm 2| 2007/12/12 17:12:38 | at org.xmlBlaster.protocol.socket.HandleClient$1.run(HandleClient.java:381) INFO | jvm 2| 2007/12/12 17:12:38 | at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:665) INFO | jvm 2| 2007/12/12 17:12:38 | at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:690) INFO | jvm 2| 2007/12/12 17:12:38 | at java.lang.Thread.run(Unknown Source) INFO | jvm 2| 2007/12/12 17:12:38 | Caused by: javax.xml.xpath.XPathExpressionException INFO | jvm 2| 2007/12/12 17:12:38 | at com.sun.org.apache.xpath.internal.jaxp.XPathImpl.evaluate(Unknown Source) INFO | jvm 2| 2007/12/12 17:12:38 | ... 14 more INFO | jvm 2| 2007/12/12 17:12:38 | Caused by: javax.xml.transform.TransformerException: Unknown error in XPath. INFO | jvm 2| 2007/12/12 17:12:38 | at com.sun.org.apache.xpath.internal.XPath.execute(Unknown Source) INFO | jvm 2| 2007/12/12 17:12:38 | at com.sun.org.apache.xpath.internal.XPath.execute(Unknown Source) INFO | jvm 2| 2007/12/12 17:12:38 | at com.sun.org.apache.xpath.internal.jaxp.XPathImpl.eval(Unknown Source) INFO | jvm 2| 2007/12/12 17:12:38 | ... 15 more INFO | jvm 2| 2007/12/12 17:12:38 | Caused by: java.lang.NullPointerException INFO | jvm 2| 2007/12/12 17:12:38 | at com.sun.org.apache.xml.internal.dtm.ref.dom2dtm.DOM2DTM.getLocalName(Unknown Source) INFO | jvm 2| 2007/12/12 17:12:38 | at com.sun.org.apache.xpath.internal.patterns.NodeTest.execute(Unknown Source) INFO | jvm 2| 2007/12/12 17:12:38 | at com.sun.org.apache.xpath.internal.axes.PredicatedNodeTest.acceptNode(Unknown Source) INFO | jvm 2| 2007/12/12 17:12:38 | at com.sun.org.apache.xpath.internal.axes.AxesWalker.nextNode(Unknown Source) INFO | jvm 2| 2007/12/12 17:12:38 | at com.sun.org.apache.xpath.internal.axes.WalkingIterator.nextNode(Unknown Source) INFO | jvm 2| 2007/12/12 17:12:38 | at com.sun.org.apache.xpath.internal.axes.NodeSequence.nextNode(Unknown Source) INFO | jvm 2| 2007/12/12 17:12:38 | at com.sun.org.apache.xpath.internal.axes.NodeSequence.runTo(Unknown Source) INFO | jvm 2| 2007/12/12 17:12:38 | at
