[Jackrabbit Wiki] Update of "JackrabbitOsgi" by ThomasMueller

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The "JackrabbitOsgi" page has been changed by ThomasMueller.
http://wiki.apache.org/jackrabbit/JackrabbitOsgi?action=diff&rev1=3&rev2=4

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  The problem with dependencies is, that Jackrabbit Core has quite big number of dependencies. To launch a Jackrabbit repository a number of libraries have been collected and put together. Some of these libraries are available as OSGi bundles (e.g. the Jackrabbit helper libraries, the JCR 2.0 API, Derby) and some are not (yet) (e.g. Lucene, Concurrent, Commons Pool, Commons DBCP). Tika is special in that it will be available as a bundle starting with release 0.6.
  
- The problem with extensibility is, that Jackrabbit Core has not been built with the kind of modularity in mind as provided by OSGi. This means internal extension API is not properly separated from internal implementations. This makes it close to impossible to expose the API as OSGi {{{Export-Package}}} without also requiring to exposing internal packages.
+ The problem with extensibility is, some internal extension APIs of Jackrabbit Core are not yet separated from internal implementations. One example is the persistence manager interface. This makes it close to impossible to expose those APIs with OSGi {{{Export-Package}}} without also requiring to exposing internal packages.
  
  The current approach followed in the [[http://svn.apache.org/repos/asf/jackrabbit/sandbox/jackrabbit2-bundle|Jackrabbit 2 Bundle Sandbox]] is to embed libraries, which are not available as bundles and to not embed libraries available as bundles.