Hi all This is a JDK6 b98 problem, and not related to Derby.
Bernt [EMAIL PROTECTED] wrote: > The following message is a courtesy copy of an article > that has been posted to comp.lang.java.databases as well. > > I'm cc'ing this reply to derby-user@db.apache.org, since not many > derby people follow this newsgroup. > > Harri Pesonen <[EMAIL PROTECTED]> writes: > >> I get the following error (sometimes) when I use DataSet<sometype> >> with Derby 10.2.1.0 and JDK6 b98: >> >> java.sql.SQLRuntimeException: Cannot store DataSet instance to WeakHashMap >> at com.sun.sql.QueryObject.registerDataSet(QueryObject.java:1306) >> at com.sun.sql.QueryObject.getQueryImpl(QueryObject.java:767) >> at com.sun.sql.QueryObject.access$000(QueryObject.java:26) >> at com.sun.sql.QueryObject$1.run(QueryObject.java:229) >> at java.security.AccessController.doPrivileged(Native Method) >> at com.sun.sql.QueryObject.invoke(QueryObject.java:224) >> at $Proxy5.system_Prefs_get(Unknown Source) >> at Kahvi.Kahvi.get_sys_pref(Kahvi.java:896) >> at Kahvi.Kahvi.get_sys_pref(Kahvi.java:892) >> at Kahvi.Kahvi.cache_filename(Kahvi.java:2627) >> at Kahvi.Kahvi.servletThumb(Kahvi.java:326) >> at Kahvi.thumb.processKahvi(thumb.java:23) >> at Kahvi.KahviServlet.processRequest(KahviServlet.java:66) >> at Kahvi.KahviServlet.doGet(KahviServlet.java:88) >> at javax.servlet.http.HttpServlet.service(HttpServlet.java:689) >> at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) >> at >> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) >> at >> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) >> at >> org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:368) >> at >> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) >> at >> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) >> at >> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) >> at >> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) >> at >> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) >> at >> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) >> at >> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) >> at >> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) >> at >> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) >> at >> org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664) >> at >> org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) >> at >> org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) >> at >> org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) >> at java.lang.Thread.run(Thread.java:619) >> Caused by: java.lang.NullPointerException >> at com.sun.sql.DataSetImpl$DataSetItr.<init>(DataSetImpl.java:1759) >> at >> com.sun.sql.DataSetImpl$DataSetListIterator.<init>(DataSetImpl.java:1846) >> at com.sun.sql.DataSetImpl.listIterator(DataSetImpl.java:1628) >> at java.util.AbstractList.equals(AbstractList.java:503) >> at java.util.WeakHashMap.eq(WeakHashMap.java:259) >> at java.util.WeakHashMap.put(WeakHashMap.java:406) >> at com.sun.sql.QueryObject.registerDataSet(QueryObject.java:1304) >> ... 32 more > -- Bernt Marius Johnsen, Database Technology Group, Staff Engineer, Technical Lead Derby/Java DB Sun Microsystems, Trondheim, Norway
