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From Tim McIver <tmci...@verizon.net>
Subject Re: Exception when writing an OBR
Date Fri, 26 Sep 2014 15:56:57 GMT
I've made a small amount of headway on this issue.  It seems that there
are two schemas used for creating OBRs (described here

The repository file I created using the repoindex tool (a.k.a bindex,
here <https://github.com/osgi/bindex>), seems to have the form defined
by the OSGi spec and not the Felix OBR form.  In looking at the source
code where the exception occurs (I have a copy of the source but I was
unable to find a link to it now; it seems surprisingly difficult to
find) it seems that the repository parser is looking for a tag called
"require" and not "requirement" which is what my repository XML file
has.  So my question is "how do I get the bundlerepository code to parse
my OSGi repository file?"  Or, I could also solve this problem by
creating a repository file in the OBR format but I'm not sure how to do

I should also probably state my main goal: I'm trying to update a remote
OBR XML file with the data for a new bundle resource.  I know the Maven
Bundle Plugin does this but I'm actually trying to write a similar
plugin for Leiningen - Clojure's build tool.

Any help with this would be greatly appreciated.


On 09/24/2014 10:10 PM, Tim McIver wrote:
> Hello,
> I'm getting an NPE when trying to write an OBR to file; I'm not sure
> what I'm doing wrong.  Here's the stack trace I see:
> Exception in thread "main" java.lang.NullPointerException
>     at
> org.apache.felix.bundlerepository.impl.DataModelHelperImpl.toXml(DataModelHelperImpl.java:380)
>     at
> org.apache.felix.bundlerepository.impl.DataModelHelperImpl.toXml(DataModelHelperImpl.java:336)
>     at
> org.apache.felix.bundlerepository.impl.DataModelHelperImpl.toXml(DataModelHelperImpl.java:299)
>     at
> org.apache.felix.bundlerepository.impl.DataModelHelperImpl.writeRepository(DataModelHelperImpl.java:186)
>     at com.timmciver.App.main(App.java:19)
> And here's the test class I created that gives this exception:
> // start
> package com.timmciver;
> import org.apache.felix.bundlerepository.DataModelHelper;
> import org.apache.felix.bundlerepository.Repository;
> import org.apache.felix.bundlerepository.impl.DataModelHelperImpl;
> import java.io.File;
> import java.io.FileOutputStream;
> import java.io.OutputStreamWriter;
> import java.io.Writer;
> public class App {
>     public static void main(String[] args) throws Exception {
>         File repoFile = new File(args[0]);
>         DataModelHelper dmh = new DataModelHelperImpl();
>         Repository repo = dmh.repository(repoFile.toURI().toURL());
>         File outFile = File.createTempFile("obr-test-", ".xml");
>         try (Writer writer = new OutputStreamWriter(new
> FileOutputStream(outFile))) {
>             dmh.writeRepository(repo, writer);
>         }
>     }
> }
> //end
> I've also created a github repo if anyone wants to run it themselves:
> https://github.com/tmciver/obr-test.
> Thanks,
> Timusers@felix.apache.org
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