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Posted to user@karaf.apache.org by Barry Hathaway <bh...@nycap.rr.com> on 2011/09/17 02:06:23 UTC

karaf enhanced logging question

I have a bundle that is generating an exception.  Looking at the log I 
see that most lines in the
stack trace contains the bundle number, name, and version; however, some 
of them do not.
What does this mean?  Are the classes being resolved from somewhere else?

Caused by: com.hp.hpl.jena.shared.JenaException: 
org.apache.xerces.impl.dv.DVFactoryException: DTD factory class 
org.apache.xerces.impl.dv.dtd.DTDDVFactoryImpl does not extend from 
DTDDVFactory.
     at 
com.hp.hpl.jena.rdf.model.impl.RDFReaderFImpl.getReader(RDFReaderFImpl.java:120)
     at com.hp.hpl.jena.rdf.model.impl.ModelCom.read(ModelCom.java:220)
     at 
com.ge.research.sadl.reasoner.ConfigurationManager.loadConfigurationFile(ConfigurationManager.java:212)[239:reasoner:1.0.0.SNAPSHOT]
     at 
com.ge.research.sadl.reasoner.ConfigurationManager.<init>(ConfigurationManager.java:156)[239:reasoner:1.0.0.SNAPSHOT]
     at 
com.ge.research.sadl.sadlserver.server.SadlServerImpl.selectServiceModel(SadlServerImpl.java:165)
     ......

Thanks.
Barry Hathaway

Re: karaf enhanced logging question

Posted by Jean-Baptiste Onofré <jb...@nanthrax.net>.
Hi Barry,

By default, Karaf uses (as defined in etc/org.ops4j.pax.logging.cfg) a 
sift log appender which allows to have a log per bundle.

On the other hand, in the main karaf.log file, all log file are categorized.
It depends of the way that you handle the log.

commons-logging, log4j, avalon, slf4j are supported. It means that you 
simply have to optionally import a logging package (for instance:

org.slf4j;resolution:=optional

after, you can use a Logger in your bundle.

Regards
JB

On 09/17/2011 02:06 AM, Barry Hathaway wrote:
> I have a bundle that is generating an exception. Looking at the log I
> see that most lines in the
> stack trace contains the bundle number, name, and version; however, some
> of them do not.
> What does this mean? Are the classes being resolved from somewhere else?
>
> Caused by: com.hp.hpl.jena.shared.JenaException:
> org.apache.xerces.impl.dv.DVFactoryException: DTD factory class
> org.apache.xerces.impl.dv.dtd.DTDDVFactoryImpl does not extend from
> DTDDVFactory.
> at
> com.hp.hpl.jena.rdf.model.impl.RDFReaderFImpl.getReader(RDFReaderFImpl.java:120)
>
> at com.hp.hpl.jena.rdf.model.impl.ModelCom.read(ModelCom.java:220)
> at
> com.ge.research.sadl.reasoner.ConfigurationManager.loadConfigurationFile(ConfigurationManager.java:212)[239:reasoner:1.0.0.SNAPSHOT]
>
> at
> com.ge.research.sadl.reasoner.ConfigurationManager.<init>(ConfigurationManager.java:156)[239:reasoner:1.0.0.SNAPSHOT]
>
> at
> com.ge.research.sadl.sadlserver.server.SadlServerImpl.selectServiceModel(SadlServerImpl.java:165)
>
> ......
>
> Thanks.
> Barry Hathaway
>

-- 
Jean-Baptiste Onofré
jbonofre@apache.org
http://blog.nanthrax.net
Talend - http://www.talend.com