On 26/02/18 13:41, Xingmin Zhang wrote:
Sorry, I accidentally hit Send button before I finished my email...
Here is the complete one
---------- Forwarded message ----------
From: Xingmin Zhang <[email protected]>
Date: Mon, Feb 26, 2018 at 8:32 AM
Subject: Jena not working from Jar file
To: [email protected]
Hi all,
I used Jena to load an .owl ontology to the default model for Sparql query
and it works well from IntelliJ IDE, however, the Jar file built from the
source code has a problem initiating Jena.
If you are repacking into a single jar, check:
https://jena.apache.org/documentation/notes/jena-repack.html
https://jena.apache.org/documentation/notes/system-initialization.html
Here is the function that has issues
protected Model call() throws Exception {
logger.trace("enter function to build ontology model for Sparql query");
org.apache.jena.rdf.model.Model model = ModelFactory.createDefaultModel();
logger.info("default ontology model created");
try {
logger.trace("start reading hpo");
InputStream in = FileManager.get().open(pathToOntology);
model.read(in, null);
RDFDataMgr will use the global StreamManager so
RDFDataMgr.read(model, pathToOntology);
should work subject to the jar being packed correctly.
StreamManager is better. FileManager is legacy.
} catch (JenaException je) {
logger.error("cannot open hpo.owl");
}
logger.trace("exit function to build ontology model for Sparql query.");
return model;
}
You can see that from my IDE, the loggers indicates that the function
completes running successfully.
...
<dependency>
<groupId>org.apache.jena</groupId>
<artifactId>apache-jena-libs</artifactId>
<type>pom</type>
<version>3.6.0</version>
</dependency>
Do you have assembly or shade in the POM?
The shade plug-in manages service files. See the jena-fuseki-server pom
file for an example.
Best,
Xingmin Zhang
