Hi Fabien, this looks like a weird error (the kind where a developer typically throws a ShouldNeverHappenException ;-) ). How can it be reproduced reliably? Is there a certain seqeunce to do so? Is it "random"? Does it really only happen with H2?
Greetings, Sebastian Fabian Cretton <[email protected]> schrieb am Fri Nov 14 2014 at 11:20:30: > Hi, > > I am not sure whether this is a problem or not, known or not. > Will fill-in a Jira if needed. > And I could try to see if it does also happen with postgreSQL if needed. > > I sometimes have "ERROR - error accessing RDF repository" messages in my > console, but the GUI does work properly. > > For instance, I just had the following log when refreshing the list of > context from "core/admin/contexts.html", eventhough the context list does > refresh correctly in the user interface: > 11:10:45.804 ERROR - error accessing RDF repository > org.openrdf.repository.RepositoryException: > org.openrdf.sail.SailException: database error while iterating over result > set > at > org.openrdf.repository.sail.SailCloseableIteration.convert(SailCloseableIteration.java:38) > ~[sesame-repository-sail-2.7.13.jar:na] > at > org.openrdf.repository.sail.SailCloseableIteration.convert(SailCloseableIteration.java:28) > ~[sesame-repository-sail-2.7.13.jar:na] > at > info.aduna.iteration.ExceptionConvertingIteration.hasNext(ExceptionConvertingIteration.java:81) > ~[sesame-util-2.7.13.jar:na] > at > org.openrdf.repository.RepositoryResult.hasNext(RepositoryResult.java:66) > ~[sesame-repository-api-2.7.13.jar:na] > at > org.apache.marmotta.commons.sesame.repository.ResultUtils$1.hasNext(ResultUtils.java:57) > ~[marmotta-commons-3.3.0-SNAPSHOT.jar:na] > at > com.google.common.collect.TransformedIterator.hasNext(TransformedIterator.java:43) > [guava-18.0.jar:na] > at > org.apache.marmotta.commons.sesame.repository.ResourceUtils.getLiteral(ResourceUtils.java:490) > [marmotta-commons-3.3.0-SNAPSHOT.jar:na] > at > org.apache.marmotta.commons.sesame.repository.ResourceUtils.getProperty(ResourceUtils.java:473) > [marmotta-commons-3.3.0-SNAPSHOT.jar:na] > at > org.apache.marmotta.commons.sesame.repository.ResourceUtils.getLabel(ResourceUtils.java:1069) > [marmotta-commons-3.3.0-SNAPSHOT.jar:na] > at > org.apache.marmotta.commons.sesame.repository.ResourceUtils.getLabel(ResourceUtils.java:1050) > [marmotta-commons-3.3.0-SNAPSHOT.jar:na] > at > org.apache.marmotta.commons.sesame.repository.ResourceUtils.getLabel(ResourceUtils.java:1023) > [marmotta-commons-3.3.0-SNAPSHOT.jar:na] > at > org.apache.marmotta.platform.core.services.triplestore.ContextServiceImpl.getContextLabel(ContextServiceImpl.java:309) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.services.triplestore.ContextServiceImpl$Proxy$_$$_WeldClientProxy.getContextLabel(Unknown > Source) [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.webservices.triplestore.ContextWebService.listContexts(ContextWebService.java:87) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.webservices.triplestore.ContextWebService$Proxy$_$$_WeldClientProxy.listContexts(Unknown > Source) [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > ~[na:1.7.0_72] > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) > ~[na:1.7.0_72] > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > ~[na:1.7.0_72] > at java.lang.reflect.Method.invoke(Method.java:606) ~[na:1.7.0_72] > at > org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:137) > [resteasy-jaxrs-3.0.10.Final.jar:na] > at > org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTarget(ResourceMethodInvoker.java:296) > [resteasy-jaxrs-3.0.10.Final.jar:na] > at > org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:250) > [resteasy-jaxrs-3.0.10.Final.jar:na] > at > org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:237) > [resteasy-jaxrs-3.0.10.Final.jar:na] > at > org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:356) > [resteasy-jaxrs-3.0.10.Final.jar:na] > at > org.jboss.resteasy.core.SynchronousDispatcher.invokePropagateNotFound(SynchronousDispatcher.java:217) > [resteasy-jaxrs-3.0.10.Final.jar:na] > at > org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:224) > [resteasy-jaxrs-3.0.10.Final.jar:na] > at > org.jboss.resteasy.plugins.server.servlet.FilterDispatcher.doFilter(FilterDispatcher.java:62) > [resteasy-jaxrs-3.0.10.Final.jar:na] > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.marmotta.platform.core.servlet.MarmottaResourceFilter$MarmottaFilterChain.doFilter(MarmottaResourceFilter.java:185) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.filters.ModuleResourceFilter.doFilter(ModuleResourceFilter.java:157) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.filters.ModuleResourceFilter$Proxy$_$$_WeldClientProxy.doFilter(Unknown > Source) [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.servlet.MarmottaResourceFilter$MarmottaFilterChain.doFilter(MarmottaResourceFilter.java:180) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.servlet.MarmottaResourceFilter$MarmottaFilterChain.doFilter(MarmottaResourceFilter.java:182) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.filters.MarmottaServerNameFilter.doFilter(MarmottaServerNameFilter.java:104) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.servlet.MarmottaResourceFilter$MarmottaFilterChain.doFilter(MarmottaResourceFilter.java:180) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.filters.TemplatingFilter.doFilter(TemplatingFilter.java:176) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.filters.TemplatingFilter$Proxy$_$$_WeldClientProxy.doFilter(Unknown > Source) [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.servlet.MarmottaResourceFilter$MarmottaFilterChain.doFilter(MarmottaResourceFilter.java:180) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.security.filters.MarmottaAccessControlFilter.doFilter(MarmottaAccessControlFilter.java:142) > [marmotta-security-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.security.filters.MarmottaAccessControlFilter$Proxy$_$$_WeldClientProxy.doFilter(Unknown > Source) [marmotta-security-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.servlet.MarmottaResourceFilter$MarmottaFilterChain.doFilter(MarmottaResourceFilter.java:180) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.user.filters.MarmottaAuthenticationFilter.doFilter(MarmottaAuthenticationFilter.java:163) > [marmotta-user-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.user.filters.MarmottaAuthenticationFilter$Proxy$_$$_WeldClientProxy.doFilter(Unknown > Source) [marmotta-user-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.servlet.MarmottaResourceFilter$MarmottaFilterChain.doFilter(MarmottaResourceFilter.java:180) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.servlet.MarmottaResourceFilter.doFilter(MarmottaResourceFilter.java:133) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.marmotta.platform.core.servlet.MarmottaPreStartupFilter.doFilter(MarmottaPreStartupFilter.java:106) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > com.thetransactioncompany.cors.CORSFilter.doFilter(CORSFilter.java:208) > [cors-filter-2.2.1.jar:2.2.1] > at > com.thetransactioncompany.cors.CORSFilter.doFilter(CORSFilter.java:271) > [cors-filter-2.2.1.jar:2.2.1] > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.marmotta.platform.core.servlet.MarmottaOptionsFilter.doFilter(MarmottaOptionsFilter.java:81) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) > [na:1.7.0_72] > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) > [na:1.7.0_72] > at java.lang.Thread.run(Thread.java:745) [na:1.7.0_72] > Caused by: org.openrdf.sail.SailException: database error while iterating > over result set > at > org.apache.marmotta.kiwi.sail.KiWiSailConnection$6$1.convert(KiWiSailConnection.java:308) > ~[kiwi-triplestore-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.kiwi.sail.KiWiSailConnection$6$1.convert(KiWiSailConnection.java:301) > ~[kiwi-triplestore-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > info.aduna.iteration.ExceptionConvertingIteration.hasNext(ExceptionConvertingIteration.java:81) > ~[sesame-util-2.7.13.jar:na] > at > info.aduna.iteration.UnionIteration.getNextElement(UnionIteration.java:74) > ~[sesame-util-2.7.13.jar:na] > at > info.aduna.iteration.UnionIteration.getNextElement(UnionIteration.java:91) > ~[sesame-util-2.7.13.jar:na] > at > info.aduna.iteration.LookAheadIteration.lookAhead(LookAheadIteration.java:91) > ~[sesame-util-2.7.13.jar:na] > at > info.aduna.iteration.LookAheadIteration.hasNext(LookAheadIteration.java:60) > ~[sesame-util-2.7.13.jar:na] > at > info.aduna.iteration.IterationWrapper.hasNext(IterationWrapper.java:68) > ~[sesame-util-2.7.13.jar:na] > at > org.openrdf.sail.helpers.SailBaseIteration.hasNext(SailBaseIteration.java:61) > ~[sesame-sail-api-2.7.13.jar:na] > at > info.aduna.iteration.ExceptionConvertingIteration.hasNext(ExceptionConvertingIteration.java:78) > ~[sesame-util-2.7.13.jar:na] > ... 69 common frames omitted > Caused by: java.lang.NullPointerException: null > at > org.apache.marmotta.kiwi.persistence.KiWiConnection.constructTriplesFromDatabase(KiWiConnection.java:2014) > ~[kiwi-triplestore-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.kiwi.persistence.KiWiConnection$14.fetchBatch(KiWiConnection.java:1717) > ~[kiwi-triplestore-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.kiwi.persistence.KiWiConnection$14.hasNext(KiWiConnection.java:1699) > ~[kiwi-triplestore-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > info.aduna.iteration.ExceptionConvertingIteration.hasNext(ExceptionConvertingIteration.java:78) > ~[sesame-util-2.7.13.jar:na] > at > org.openrdf.repository.RepositoryResult.hasNext(RepositoryResult.java:66) > ~[sesame-repository-api-2.7.13.jar:na] > at > info.aduna.iteration.DelayedIteration.hasNext(DelayedIteration.java:78) > ~[sesame-util-2.7.13.jar:na] > at > info.aduna.iteration.ExceptionConvertingIteration.hasNext(ExceptionConvertingIteration.java:78) > ~[sesame-util-2.7.13.jar:na] > ... 76 common frames omitted > 11:10:45.815 ERROR - error accessing RDF repository > org.openrdf.repository.RepositoryException: > org.openrdf.sail.SailException: database error while iterating over result > set > at > org.openrdf.repository.sail.SailCloseableIteration.convert(SailCloseableIteration.java:38) > ~[sesame-repository-sail-2.7.13.jar:na] > at > org.openrdf.repository.sail.SailCloseableIteration.convert(SailCloseableIteration.java:28) > ~[sesame-repository-sail-2.7.13.jar:na] > at > info.aduna.iteration.ExceptionConvertingIteration.hasNext(ExceptionConvertingIteration.java:81) > ~[sesame-util-2.7.13.jar:na] > at > org.openrdf.repository.RepositoryResult.hasNext(RepositoryResult.java:66) > ~[sesame-repository-api-2.7.13.jar:na] > at > org.apache.marmotta.commons.sesame.repository.ResultUtils$1.hasNext(ResultUtils.java:57) > ~[marmotta-commons-3.3.0-SNAPSHOT.jar:na] > at > com.google.common.collect.TransformedIterator.hasNext(TransformedIterator.java:43) > [guava-18.0.jar:na] > at > org.apache.marmotta.commons.sesame.repository.ResourceUtils.getLiteral(ResourceUtils.java:490) > [marmotta-commons-3.3.0-SNAPSHOT.jar:na] > at > org.apache.marmotta.commons.sesame.repository.ResourceUtils.getProperty(ResourceUtils.java:473) > [marmotta-commons-3.3.0-SNAPSHOT.jar:na] > at > org.apache.marmotta.commons.sesame.repository.ResourceUtils.getLabel(ResourceUtils.java:1079) > [marmotta-commons-3.3.0-SNAPSHOT.jar:na] > at > org.apache.marmotta.commons.sesame.repository.ResourceUtils.getLabel(ResourceUtils.java:1050) > [marmotta-commons-3.3.0-SNAPSHOT.jar:na] > at > org.apache.marmotta.commons.sesame.repository.ResourceUtils.getLabel(ResourceUtils.java:1023) > [marmotta-commons-3.3.0-SNAPSHOT.jar:na] > at > org.apache.marmotta.platform.core.services.triplestore.ContextServiceImpl.getContextLabel(ContextServiceImpl.java:309) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.services.triplestore.ContextServiceImpl$Proxy$_$$_WeldClientProxy.getContextLabel(Unknown > Source) [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.webservices.triplestore.ContextWebService.listContexts(ContextWebService.java:87) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.webservices.triplestore.ContextWebService$Proxy$_$$_WeldClientProxy.listContexts(Unknown > Source) [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > ~[na:1.7.0_72] > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) > ~[na:1.7.0_72] > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > ~[na:1.7.0_72] > at java.lang.reflect.Method.invoke(Method.java:606) ~[na:1.7.0_72] > at > org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:137) > [resteasy-jaxrs-3.0.10.Final.jar:na] > at > org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTarget(ResourceMethodInvoker.java:296) > [resteasy-jaxrs-3.0.10.Final.jar:na] > at > org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:250) > [resteasy-jaxrs-3.0.10.Final.jar:na] > at > org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:237) > [resteasy-jaxrs-3.0.10.Final.jar:na] > at > org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:356) > [resteasy-jaxrs-3.0.10.Final.jar:na] > at > org.jboss.resteasy.core.SynchronousDispatcher.invokePropagateNotFound(SynchronousDispatcher.java:217) > [resteasy-jaxrs-3.0.10.Final.jar:na] > at > org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:224) > [resteasy-jaxrs-3.0.10.Final.jar:na] > at > org.jboss.resteasy.plugins.server.servlet.FilterDispatcher.doFilter(FilterDispatcher.java:62) > [resteasy-jaxrs-3.0.10.Final.jar:na] > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.marmotta.platform.core.servlet.MarmottaResourceFilter$MarmottaFilterChain.doFilter(MarmottaResourceFilter.java:185) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.filters.ModuleResourceFilter.doFilter(ModuleResourceFilter.java:157) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.filters.ModuleResourceFilter$Proxy$_$$_WeldClientProxy.doFilter(Unknown > Source) [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.servlet.MarmottaResourceFilter$MarmottaFilterChain.doFilter(MarmottaResourceFilter.java:180) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.servlet.MarmottaResourceFilter$MarmottaFilterChain.doFilter(MarmottaResourceFilter.java:182) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.filters.MarmottaServerNameFilter.doFilter(MarmottaServerNameFilter.java:104) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.servlet.MarmottaResourceFilter$MarmottaFilterChain.doFilter(MarmottaResourceFilter.java:180) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.filters.TemplatingFilter.doFilter(TemplatingFilter.java:176) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.filters.TemplatingFilter$Proxy$_$$_WeldClientProxy.doFilter(Unknown > Source) [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.servlet.MarmottaResourceFilter$MarmottaFilterChain.doFilter(MarmottaResourceFilter.java:180) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.security.filters.MarmottaAccessControlFilter.doFilter(MarmottaAccessControlFilter.java:142) > [marmotta-security-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.security.filters.MarmottaAccessControlFilter$Proxy$_$$_WeldClientProxy.doFilter(Unknown > Source) [marmotta-security-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.servlet.MarmottaResourceFilter$MarmottaFilterChain.doFilter(MarmottaResourceFilter.java:180) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.user.filters.MarmottaAuthenticationFilter.doFilter(MarmottaAuthenticationFilter.java:163) > [marmotta-user-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.user.filters.MarmottaAuthenticationFilter$Proxy$_$$_WeldClientProxy.doFilter(Unknown > Source) [marmotta-user-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.servlet.MarmottaResourceFilter$MarmottaFilterChain.doFilter(MarmottaResourceFilter.java:180) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.servlet.MarmottaResourceFilter.doFilter(MarmottaResourceFilter.java:133) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.marmotta.platform.core.servlet.MarmottaPreStartupFilter.doFilter(MarmottaPreStartupFilter.java:106) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > com.thetransactioncompany.cors.CORSFilter.doFilter(CORSFilter.java:208) > [cors-filter-2.2.1.jar:2.2.1] > at > com.thetransactioncompany.cors.CORSFilter.doFilter(CORSFilter.java:271) > [cors-filter-2.2.1.jar:2.2.1] > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.marmotta.platform.core.servlet.MarmottaOptionsFilter.doFilter(MarmottaOptionsFilter.java:81) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) > [na:1.7.0_72] > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) > [na:1.7.0_72] > at java.lang.Thread.run(Thread.java:745) [na:1.7.0_72] > Caused by: org.openrdf.sail.SailException: database error while iterating > over result set > at > org.apache.marmotta.kiwi.sail.KiWiSailConnection$6$1.convert(KiWiSailConnection.java:308) > ~[kiwi-triplestore-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.kiwi.sail.KiWiSailConnection$6$1.convert(KiWiSailConnection.java:301) > ~[kiwi-triplestore-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > info.aduna.iteration.ExceptionConvertingIteration.hasNext(ExceptionConvertingIteration.java:81) > ~[sesame-util-2.7.13.jar:na] > at > info.aduna.iteration.UnionIteration.getNextElement(UnionIteration.java:74) > ~[sesame-util-2.7.13.jar:na] > at > info.aduna.iteration.UnionIteration.getNextElement(UnionIteration.java:91) > ~[sesame-util-2.7.13.jar:na] > at > info.aduna.iteration.LookAheadIteration.lookAhead(LookAheadIteration.java:91) > ~[sesame-util-2.7.13.jar:na] > at > info.aduna.iteration.LookAheadIteration.hasNext(LookAheadIteration.java:60) > ~[sesame-util-2.7.13.jar:na] > at > info.aduna.iteration.IterationWrapper.hasNext(IterationWrapper.java:68) > ~[sesame-util-2.7.13.jar:na] > at > org.openrdf.sail.helpers.SailBaseIteration.hasNext(SailBaseIteration.java:61) > ~[sesame-sail-api-2.7.13.jar:na] > at > info.aduna.iteration.ExceptionConvertingIteration.hasNext(ExceptionConvertingIteration.java:78) > ~[sesame-util-2.7.13.jar:na] > ... 69 common frames omitted > Caused by: java.lang.NullPointerException: null > at > org.apache.marmotta.kiwi.persistence.KiWiConnection.constructTriplesFromDatabase(KiWiConnection.java:2014) > ~[kiwi-triplestore-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.kiwi.persistence.KiWiConnection$14.fetchBatch(KiWiConnection.java:1717) > ~[kiwi-triplestore-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.kiwi.persistence.KiWiConnection$14.hasNext(KiWiConnection.java:1699) > ~[kiwi-triplestore-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > info.aduna.iteration.ExceptionConvertingIteration.hasNext(ExceptionConvertingIteration.java:78) > ~[sesame-util-2.7.13.jar:na] > at > org.openrdf.repository.RepositoryResult.hasNext(RepositoryResult.java:66) > ~[sesame-repository-api-2.7.13.jar:na] > at > info.aduna.iteration.DelayedIteration.hasNext(DelayedIteration.java:78) > ~[sesame-util-2.7.13.jar:na] > at > info.aduna.iteration.ExceptionConvertingIteration.hasNext(ExceptionConvertingIteration.java:78) > ~[sesame-util-2.7.13.jar:na] > ... 76 common frames omitted > 11:10:45.819 ERROR - error accessing RDF repository > org.openrdf.repository.RepositoryException: > org.openrdf.sail.SailException: database error while iterating over result > set > at > org.openrdf.repository.sail.SailCloseableIteration.convert(SailCloseableIteration.java:38) > ~[sesame-repository-sail-2.7.13.jar:na] > at > org.openrdf.repository.sail.SailCloseableIteration.convert(SailCloseableIteration.java:28) > ~[sesame-repository-sail-2.7.13.jar:na] > at > info.aduna.iteration.ExceptionConvertingIteration.hasNext(ExceptionConvertingIteration.java:81) > ~[sesame-util-2.7.13.jar:na] > at > org.openrdf.repository.RepositoryResult.hasNext(RepositoryResult.java:66) > ~[sesame-repository-api-2.7.13.jar:na] > at > org.apache.marmotta.commons.sesame.repository.ResultUtils$1.hasNext(ResultUtils.java:57) > ~[marmotta-commons-3.3.0-SNAPSHOT.jar:na] > at > com.google.common.collect.TransformedIterator.hasNext(TransformedIterator.java:43) > [guava-18.0.jar:na] > at > org.apache.marmotta.commons.sesame.repository.ResourceUtils.getLiteral(ResourceUtils.java:490) > [marmotta-commons-3.3.0-SNAPSHOT.jar:na] > at > org.apache.marmotta.commons.sesame.repository.ResourceUtils.getProperty(ResourceUtils.java:473) > [marmotta-commons-3.3.0-SNAPSHOT.jar:na] > at > org.apache.marmotta.commons.sesame.repository.ResourceUtils.getLabel(ResourceUtils.java:1079) > [marmotta-commons-3.3.0-SNAPSHOT.jar:na] > at > org.apache.marmotta.commons.sesame.repository.ResourceUtils.getLabel(ResourceUtils.java:1050) > [marmotta-commons-3.3.0-SNAPSHOT.jar:na] > at > org.apache.marmotta.commons.sesame.repository.ResourceUtils.getLabel(ResourceUtils.java:1023) > [marmotta-commons-3.3.0-SNAPSHOT.jar:na] > at > org.apache.marmotta.platform.core.services.triplestore.ContextServiceImpl.getContextLabel(ContextServiceImpl.java:309) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.services.triplestore.ContextServiceImpl$Proxy$_$$_WeldClientProxy.getContextLabel(Unknown > Source) [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.webservices.triplestore.ContextWebService.listContexts(ContextWebService.java:87) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.webservices.triplestore.ContextWebService$Proxy$_$$_WeldClientProxy.listContexts(Unknown > Source) [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > ~[na:1.7.0_72] > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) > ~[na:1.7.0_72] > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > ~[na:1.7.0_72] > at java.lang.reflect.Method.invoke(Method.java:606) ~[na:1.7.0_72] > at > org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:137) > [resteasy-jaxrs-3.0.10.Final.jar:na] > at > org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTarget(ResourceMethodInvoker.java:296) > [resteasy-jaxrs-3.0.10.Final.jar:na] > at > org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:250) > [resteasy-jaxrs-3.0.10.Final.jar:na] > at > org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:237) > [resteasy-jaxrs-3.0.10.Final.jar:na] > at > org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:356) > [resteasy-jaxrs-3.0.10.Final.jar:na] > at > org.jboss.resteasy.core.SynchronousDispatcher.invokePropagateNotFound(SynchronousDispatcher.java:217) > [resteasy-jaxrs-3.0.10.Final.jar:na] > at > org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:224) > [resteasy-jaxrs-3.0.10.Final.jar:na] > at > org.jboss.resteasy.plugins.server.servlet.FilterDispatcher.doFilter(FilterDispatcher.java:62) > [resteasy-jaxrs-3.0.10.Final.jar:na] > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.marmotta.platform.core.servlet.MarmottaResourceFilter$MarmottaFilterChain.doFilter(MarmottaResourceFilter.java:185) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.filters.ModuleResourceFilter.doFilter(ModuleResourceFilter.java:157) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.filters.ModuleResourceFilter$Proxy$_$$_WeldClientProxy.doFilter(Unknown > Source) [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.servlet.MarmottaResourceFilter$MarmottaFilterChain.doFilter(MarmottaResourceFilter.java:180) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.servlet.MarmottaResourceFilter$MarmottaFilterChain.doFilter(MarmottaResourceFilter.java:182) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.filters.MarmottaServerNameFilter.doFilter(MarmottaServerNameFilter.java:104) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.servlet.MarmottaResourceFilter$MarmottaFilterChain.doFilter(MarmottaResourceFilter.java:180) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.filters.TemplatingFilter.doFilter(TemplatingFilter.java:176) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.filters.TemplatingFilter$Proxy$_$$_WeldClientProxy.doFilter(Unknown > Source) [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.servlet.MarmottaResourceFilter$MarmottaFilterChain.doFilter(MarmottaResourceFilter.java:180) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.security.filters.MarmottaAccessControlFilter.doFilter(MarmottaAccessControlFilter.java:142) > [marmotta-security-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.security.filters.MarmottaAccessControlFilter$Proxy$_$$_WeldClientProxy.doFilter(Unknown > Source) [marmotta-security-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.servlet.MarmottaResourceFilter$MarmottaFilterChain.doFilter(MarmottaResourceFilter.java:180) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.user.filters.MarmottaAuthenticationFilter.doFilter(MarmottaAuthenticationFilter.java:163) > [marmotta-user-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.user.filters.MarmottaAuthenticationFilter$Proxy$_$$_WeldClientProxy.doFilter(Unknown > Source) [marmotta-user-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.servlet.MarmottaResourceFilter$MarmottaFilterChain.doFilter(MarmottaResourceFilter.java:180) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.platform.core.servlet.MarmottaResourceFilter.doFilter(MarmottaResourceFilter.java:133) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.marmotta.platform.core.servlet.MarmottaPreStartupFilter.doFilter(MarmottaPreStartupFilter.java:106) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > com.thetransactioncompany.cors.CORSFilter.doFilter(CORSFilter.java:208) > [cors-filter-2.2.1.jar:2.2.1] > at > com.thetransactioncompany.cors.CORSFilter.doFilter(CORSFilter.java:271) > [cors-filter-2.2.1.jar:2.2.1] > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.marmotta.platform.core.servlet.MarmottaOptionsFilter.doFilter(MarmottaOptionsFilter.java:81) > [marmotta-core-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312) > [tomcat-embed-core-7.0.47.jar:7.0.47] > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) > [na:1.7.0_72] > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) > [na:1.7.0_72] > at java.lang.Thread.run(Thread.java:745) [na:1.7.0_72] > Caused by: org.openrdf.sail.SailException: database error while iterating > over result set > at > org.apache.marmotta.kiwi.sail.KiWiSailConnection$6$1.convert(KiWiSailConnection.java:308) > ~[kiwi-triplestore-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.kiwi.sail.KiWiSailConnection$6$1.convert(KiWiSailConnection.java:301) > ~[kiwi-triplestore-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > info.aduna.iteration.ExceptionConvertingIteration.hasNext(ExceptionConvertingIteration.java:81) > ~[sesame-util-2.7.13.jar:na] > at > info.aduna.iteration.UnionIteration.getNextElement(UnionIteration.java:74) > ~[sesame-util-2.7.13.jar:na] > at > info.aduna.iteration.UnionIteration.getNextElement(UnionIteration.java:91) > ~[sesame-util-2.7.13.jar:na] > at > info.aduna.iteration.LookAheadIteration.lookAhead(LookAheadIteration.java:91) > ~[sesame-util-2.7.13.jar:na] > at > info.aduna.iteration.LookAheadIteration.hasNext(LookAheadIteration.java:60) > ~[sesame-util-2.7.13.jar:na] > at > info.aduna.iteration.IterationWrapper.hasNext(IterationWrapper.java:68) > ~[sesame-util-2.7.13.jar:na] > at > org.openrdf.sail.helpers.SailBaseIteration.hasNext(SailBaseIteration.java:61) > ~[sesame-sail-api-2.7.13.jar:na] > at > info.aduna.iteration.ExceptionConvertingIteration.hasNext(ExceptionConvertingIteration.java:78) > ~[sesame-util-2.7.13.jar:na] > ... 69 common frames omitted > Caused by: java.lang.NullPointerException: null > at > org.apache.marmotta.kiwi.persistence.KiWiConnection.constructTriplesFromDatabase(KiWiConnection.java:2014) > ~[kiwi-triplestore-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.kiwi.persistence.KiWiConnection$14.fetchBatch(KiWiConnection.java:1717) > ~[kiwi-triplestore-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > org.apache.marmotta.kiwi.persistence.KiWiConnection$14.hasNext(KiWiConnection.java:1699) > ~[kiwi-triplestore-3.3.0-SNAPSHOT.jar:3.3.0-SNAPSHOT] > at > info.aduna.iteration.ExceptionConvertingIteration.hasNext(ExceptionConvertingIteration.java:78) > ~[sesame-util-2.7.13.jar:na] > at > org.openrdf.repository.RepositoryResult.hasNext(RepositoryResult.java:66) > ~[sesame-repository-api-2.7.13.jar:na] > at > info.aduna.iteration.DelayedIteration.hasNext(DelayedIteration.java:78) > ~[sesame-util-2.7.13.jar:na] > at > info.aduna.iteration.ExceptionConvertingIteration.hasNext(ExceptionConvertingIteration.java:78) > ~[sesame-util-2.7.13.jar:na] > ... 76 common frames omitted >
