I keep getting an UnsupportedOperationException error on startup
something like 80% of the time. If I'm lucky, I don't get it and the
server runs fine from then on. Looks like some startup issue. If I
remember, there was some thread saying this was the result of a race
condition with DataNucleus, but I can't find that thread anymore.
Could someone help please? This is getting a bit frustrating. Thanks!
SEVERE: [1275287104906000] javax.servlet.ServletContext log: Exception
while dispatching incoming RPC call
com.google.gwt.user.server.rpc.UnexpectedException: Service method
'public abstract java.util.ArrayList
com.allurefx.herdspot.client.HerdspotService.getEventsSummary(boolean)
throws com.google.gwt.user.client.rpc.SerializationException' threw an
unexpected exception: java.lang.UnsupportedOperationException
at
com.google.gwt.user.server.rpc.RPC.encodeResponseForFailure(RPC.java:
378)
at
com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:
581)
at
com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:
188)
at
com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:
224)
at
com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:
62)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:713)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:
511)
at org.mortbay.jetty.servlet.ServletHandler
$CachedChain.doFilter(ServletHandler.java:1166)
at
com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:
51)
at org.mortbay.jetty.servlet.ServletHandler
$CachedChain.doFilter(ServletHandler.java:1157)
at
com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:
43)
at org.mortbay.jetty.servlet.ServletHandler
$CachedChain.doFilter(ServletHandler.java:1157)
at
com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:
122)
at org.mortbay.jetty.servlet.ServletHandler
$CachedChain.doFilter(ServletHandler.java:1157)
at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:
388)
at
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:
216)
at
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:
182)
at
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:
765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:
418)
at
com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:
70)
at
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:
152)
at com.google.appengine.tools.development.JettyContainerService
$ApiProxyHandler.handle(JettyContainerService.java:349)
at
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:
152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:
542)
at org.mortbay.jetty.HttpConnection
$RequestHandler.content(HttpConnection.java:938)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:755)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at
org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:
409)
at org.mortbay.thread.QueuedThreadPool
$PoolThread.run(QueuedThreadPool.java:582)
Caused by: java.lang.UnsupportedOperationException
at
org.datanucleus.store.appengine.EntityUtils.getPropertyName(EntityUtils.java:
62)
at
org.datanucleus.store.appengine.DatastoreFieldManager.getPropertyName(DatastoreFieldManager.java:
1073)
at
org.datanucleus.store.appengine.DatastoreFieldManager.fetchObjectField(DatastoreFieldManager.java:
309)
at
org.datanucleus.store.appengine.DatastoreFieldManager.fetchStringField(DatastoreFieldManager.java:
202)
at
org.datanucleus.state.AbstractStateManager.replacingStringField(AbstractStateManager.java:
1180)
at
com.allurefx.herdspot.server.data.Token.jdoReplaceField(Token.java)
at
com.allurefx.herdspot.server.data.Token.jdoReplaceFields(Token.java)
at
org.datanucleus.state.JDOStateManagerImpl.replaceFields(JDOStateManagerImpl.java:
2772)
at
org.datanucleus.state.JDOStateManagerImpl.replaceFields(JDOStateManagerImpl.java:
2791)
at
org.datanucleus.store.appengine.DatastorePersistenceHandler.fetchObject(DatastorePersistenceHandler.java:
480)
at
org.datanucleus.state.JDOStateManagerImpl.validate(JDOStateManagerImpl.java:
4263)
at
org.datanucleus.ObjectManagerImpl.findObject(ObjectManagerImpl.java:
2444)
at org.datanucleus.jpa.EntityManagerImpl.find(EntityManagerImpl.java:
234)
at
org.datanucleus.store.appengine.jpa.DatastoreEntityManager.find(DatastoreEntityManager.java:
56)
at com.allurefx.herdspot.server.Session.<init>(Session.java:154)
at
com.allurefx.herdspot.server.HerdspotServiceImpl.getSession(HerdspotServiceImpl.java:
564)
at
com.allurefx.herdspot.server.HerdspotServiceImpl.getEventsSummary(HerdspotServiceImpl.java:
229)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:
39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:
25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
com.google.appengine.tools.development.agent.runtime.Runtime.invoke(Runtime.java:
100)
at
com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:
562)
... 30 more
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