Update classloader if bundles are updated/uninstalled
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Key: SLING-1070
URL: https://issues.apache.org/jira/browse/SLING-1070
Project: Sling
Issue Type: Bug
Components: Commons ClassLoader
Reporter: Carsten Ziegeler
Assignee: Carsten Ziegeler
Fix For: Commons ClassLoader 0.9.0
Currently the commons classloader does not detect bundle updates, uninstalls
etc. This may cause class cast exceptions downstream when the commons
classloader has already loaded an old version of a class while the using code
has the new version of this class.
The solution is to unregister and reregister the classloader whenever a "used"
bundle is updated/uninstalled.
We should also cache the class loading process to avoid too many lookups (which
are very slow). By using this cache we know from which bundled we already have
loaded classes and if one of these bundles change we can handle this case. If
any other bundle changes we don't have to do anything.
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