Hi all,
I'm trying to get Sesame to talk to Virtuoso, as outlined in the
documentation at
http://docs.openlinksw.com/virtuoso/rdfnativestorageproviders.html, but am
having some trouble.
Following those instructions, the VirtuosoTest program compiles and
executes with the normal/expected results. However, I'm not able to set up
a Virtuoso HTTP Sesame Repository. The required JARs are placed as
described by the documentation ("webapps/openrdf-sesame/WEB-INF/lib" and
"webapps/openrdf-workbench/WEB-INF/lib" respectively) and the XSLs also
("webapps/openrdf-workbench/transformations/"). Upon in Sesame adding a new
repository I get as far as the screen where I enter Virtuoso host and
credentials. Clicking next triggers a NullPointerException.
The versions of components that I am using and a stack trace from Tomcat
are at the bottom of this email. Any hints as to how I might proceed with
debugging/solving this?
Cheers,
Karl
------ Component versions ------
virtuoso-t -?:
Virtuoso Open Source Edition (multi threaded)
Version 6.1.6.3127-pthreads as of Sep 24 2013
Compiled for Linux (x86_64-pc-linux-gnu)
Copyright (C) 1998-2012 OpenLink Software
java -jar virtjdbc3.jar
OpenLink Virtuoso(TM) Driver for JDBC(TM) Version 3.x [Build 3.62]
java -jar virtjdbc4.jar
OpenLink Virtuoso(TM) Driver for JDBC(TM) Version 4.x [Build 3.62]
java -jar virt_sesame2.jar
OpenLink Virtuoso(TM) Provider for Sesame2(TM) Version 2.7.3 [Build 1.12]
Sesame 2.7.14
java -version
java version "1.7.0_65"
OpenJDK Runtime Environment (IcedTea 2.5.3) (7u71-2.5.3-0ubuntu0.14.04.1)
OpenJDK 64-Bit Server VM (build 24.65-b04, mixed mode)
uname -a
Linux saab 3.13.0-40-generic #69-Ubuntu SMP Thu Nov 13 17:53:56 UTC 2014
x86_64 x86_64 x86_64 GNU/Linux
------ Stack trace ------
nov 27, 2014 4:30:51 EM org.apache.catalina.core.StandardWrapperValve invoke
ALLVARLIG: Servlet.service() for servlet workbench threw exception
java.lang.NullPointerException
at
org.openrdf.workbench.commands.CreateServlet.getConfigTemplate(CreateServlet.java:159)
at
org.openrdf.workbench.commands.CreateServlet.createRepositoryConfig(CreateServlet.java:130)
at
org.openrdf.workbench.commands.CreateServlet.doPost(CreateServlet.java:75)
at
org.openrdf.workbench.base.TransformationServlet.service(TransformationServlet.java:106)
at org.openrdf.workbench.base.BaseServlet.service(BaseServlet.java:137)
at
org.openrdf.workbench.proxy.ProxyRepositoryServlet.service(ProxyRepositoryServlet.java:104)
at
org.openrdf.workbench.proxy.WorkbenchServlet.service(WorkbenchServlet.java:222)
at
org.openrdf.workbench.proxy.WorkbenchServlet.handleRequest(WorkbenchServlet.java:151)
at
org.openrdf.workbench.proxy.WorkbenchServlet.service(WorkbenchServlet.java:119)
at
org.openrdf.workbench.proxy.WorkbenchGateway.service(WorkbenchGateway.java:131)
at org.openrdf.workbench.base.BaseServlet.service(BaseServlet.java:137)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.openrdf.workbench.proxy.CookieCacheControlFilter.doFilter(CookieCacheControlFilter.java:63)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:606)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:745)
------------------------------------------------------------------------------
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