> But in my assembly jar, I still have the
> org.apache.jena.system.JenaSubsystemLifecycle file. How to make it
> works as well with assembly jars?
Using an assembly to make a combined jar? I've not tried. It will need
somewhat to combine the service files into one - the transformer is
basically concatenating the contents of each file. Somehow, the same
process needs to happen. The shade plugin seems to make such things easier.
Andy
On 05/02/16 11:41, Julien Plu wrote:
Hi Andy,
Thanks! It indeed now works with the following lines added in my pom:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>1.6</version>
<configuration>
<shadedArtifactAttached>false</shadedArtifactAttached>
<transformers>
<transformer
implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>Test</mainClass>
</transformer>
<transformer
implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"
/>
</transformers>
<filters>
<filter>
<artifact>*:*</artifact>
</filter>
</filters>
</configuration>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
</execution>
</executions>
</plugin>
And it works with the new non executable jar that the plugin is creating.
But in my assembly jar, I still have the
org.apache.jena.system.JenaSubsystemLifecycle file. How to make it works as
well with assembly jars?
--
Julien Plu
PhD Student at Eurecom.
Personal webpage: http://jplu.developpez.com
FOAF file : http://jplu.developpez.com/julien
Email address : [email protected] && *[email protected]
<[email protected]>*
Phone : +33493008103
Twitter : @julienplu
2016-02-05 11:38 GMT+01:00 Andy Seaborne <[email protected]>:
Hi Julien,
The NPE is happening during system initialization. It looks like TDB init
running before ARQ init.
Jena now uses ServiceLoader for initialization. Each jena jar has a
META-INF/services/org.apache.jena.system.JenaSubsystemLifecycle file which
are combined to form the initializationprocess.
My guess is that the combined jar has one services/JenaSubsystemLifecycle
file at random, in this case TDB's.
Combining jars needs to cope with the services files.
We do have a combined jar for Fuseki - the process it uses is to shade
(maven-shade-plugin) the jars together with a specific step to combine
services via ServicesResourceTransformer. See [*] for details.
If you look in your executable jar, look for the services directory and
check the files there to see if that agrees with the guess above.
Andy
[*]
https://github.com/apache/jena/blob/master/jena-fuseki2/jena-fuseki-server/pom.xml#L62
On 05/02/16 08:49, Julien Plu wrote:
Hello,
I have an issue to load RDF files only with the new Jena 3.0.1. With this
simple code:
import org.apache.jena.riot.RDFDataMgr;
import org.apache.jena.rdf.model.Model;
public class Test {
public static void main(String[] args) {
Model model = RDFDataMgr.loadModel("test.nt");
}
}
Where "test.nt" contains one simple triple:
<http://dbpedia.org/resource/Barack_Obama> <
http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <
http://dbpedia.org/ontology/Person> .
If I compile this code with Maven to build an executable jar and run it
with the command line:
java -jar target/test.jar
I get the following exception:
log4j:WARN No appenders could be found for logger (Jena).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for
more info.
Exception in thread "main" java.lang.ExceptionInInitializerError
at
Test.main(Test.java:5)
Caused by: java.lang.NullPointerException
at
org.apache.jena.tdb.sys.EnvTDB.processGlobalSystemProperties(EnvTDB.java:33)
at org.apache.jena.tdb.TDB.init(TDB.java:250)
at org.apache.jena.tdb.sys.InitTDB.start(InitTDB.java:29)
at org.apache.jena.system.JenaSystem.lambda$init$40(JenaSystem.java:114)
at java.util.ArrayList.forEach(ArrayList.java:1249)
at org.apache.jena.system.JenaSystem.forEach(JenaSystem.java:179)
at org.apache.jena.system.JenaSystem.forEach(JenaSystem.java:156)
at org.apache.jena.system.JenaSystem.init(JenaSystem.java:111)
at org.apache.jena.riot.RDFDataMgr.<clinit>(RDFDataMgr.java:81)
... 2 more
Any idea of what is going wrong?
Thanks in advance.
--
Julien Plu
PhD Student at Eurecom.
Personal webpage: http://jplu.developpez.com
FOAF file : http://jplu.developpez.com/julien
Email address : [email protected] && *[email protected]
<[email protected]>*
Phone : +33493008103
Twitter : @julienplu
