Eventually I went the way of adding it as an Embed-Dependency. It's probably yet-another-xerces so I'm not sure it's optimal, but at least it's cleaner and won't tamper with other bundles.

I also removed it from the owl module (I was wrong thinking it was embedded by the owlapi).

The same was done with the mysql-connector-java in reengineer/db.

Alessandro


On 10/10/11 12:59 PM, Alessandro Adamou wrote:
Hi,

in reengineer/xml we are using xercesImpl-2.7.1.

The Xerces JAR used to be in the bundle resources and included in the bundle classpath, but we didn't really like that solution.

So, as per STANBOL-301 we removed it altogether (also the reengineer/xerces bundle, which was no longer built anyway), and had the owl bundle export its version 2.7.1 which comes along with the OWL API.

However this can cause troubles in our Sling launchers. The com.hp.hpl.jena.tdb bundle uses Xerces version 2.9.1 and exports the org.apache.xerces.util package (the rest of xerces is not exported), without declaring version 2.9.1 in the manifest. So I have experienced conflicts on that package.

So far, the solution was to have stanbol.owl export all the Xerces packages BUT org.apache.xerces.util . Obviously this is a sub-optimal workaround so to speak.

I need to find the best way to ensure reengineer/xml uses the right Xerces version (2.7.1) without tampering with the rest of the OSGi platform.

Should I have it as an Embed-Dependency or something like that? Is there an elegant solution that could save us the pain of having many embedded xercesImpl-2.7.1 all around Stanbol?

Cheers



--
M.Sc. Alessandro Adamou

Alma Mater Studiorum - Università di Bologna
Department of Computer Science
Mura Anteo Zamboni 7, 40127 Bologna - Italy

Semantic Technology Laboratory (STLab)
Institute for Cognitive Science and Technology (ISTC)
National Research Council (CNR)
Via Nomentana 56, 00161 Rome - Italy


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