[jira] [Closed] (JENA-356) Assembley loader does not work across jars in Fuseki

["Damian Steer (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/JENA-356?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Damian Steer closed JENA-356.
-----------------------------

    Resolution: Not A Problem
      Assignee: Damian Steer

Perennial java gotcha. Even experienced java users get caught out by this:

{noformat}
java -jar ...
{noformat}

will ignore any supplied class path (via $CLASSPATH, -cp) except the one given by the jar itself.

Work around: include the fuseki  jar on the classpath, call the main class directly.

P.S. I was bitten by this not that long ago :-)
                
> Assembley loader does not work across jars in Fuseki
> ----------------------------------------------------
>
>                 Key: JENA-356
>                 URL: https://issues.apache.org/jira/browse/JENA-356
>             Project: Apache Jena
>          Issue Type: Bug
>          Components: Fuseki
>    Affects Versions: Fuseki 0.2.5
>            Reporter: Claude Warren
>            Assignee: Damian Steer
>
> When attempting to load the d2rq assembler using the default fuseki-server.jar and a config.ttl file I get com.hp.hpl.jena.shared.JenaException: java.lang.ClassNotFoundException: de.fuberlin.wiwiss.d2rq.assembler.D2RQAssembler even though the jar is on the path.  Moving the de/... and d2rq/... classes from the d2rq jar into the fuseki-server jar solves the problem.
> To recreate
> Download fuseki and d2rq.
> create a d2rq configuration that works.
> create a fuseki config.ttl that will load the d2rq configuration.
> in the fuseki directory execute 
> java -Dlog4j.configuration=log4j.properties -Xmx1200M -cp $CLASSPATH:<d2rqdir>/*  -jar fuseki-server.jar --update --config=config.ttl 
> I think the issue is in the com.hp.hpl.jena.assembler.AssemblerHelp.loadClassNamedBy( Statement s ) method.  I believe that 
>        try { return Class.forName( getString( s ) ); }
> should be replaced with
>        try { return Class.forName( getString( s ), true, null ); }
> to use the bootstrap loader.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira