[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 com.sun.org.apache.xpath.interna
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 com.sun.org.apache.xpath.internal.axes.NodeSequence
Re: [xmlblaster] Subscription Invocation Exception
Hi, it looks to me to be a problem/mismatch in the choice of XML Parser. I have experienced similar Problems when having several/alternative parsers in the "endorsed" Directory of the JDK. So my belief is there is an XML Parser in the CLASSPATH or SYSTEMCLASSPATH which overwrites the one coming along with the JDK. (JDK1.4: crimson) (JDK1.5: xerces) Regards Michele Marcel Ruff wrote: > 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(Un
