Radu Cotescu created SLING-6258:
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Summary: The PackageAdminClassLoader cannot load classes from
bundles providing older API versions
Key: SLING-6258
URL: https://issues.apache.org/jira/browse/SLING-6258
Project: Sling
Issue Type: Bug
Components: Commons
Affects Versions: Commons ClassLoader 1.3.2
Reporter: Radu Cotescu
Assignee: Radu Cotescu
Fix For: Commons ClassLoader 1.3.4
The {{org.apache.sling.commons.classloader.impl.PackageAdminClassLoader}}
cannot correctly load classes that exist only in bundles providing older API
implementations if another bundle providing the same API, but newer version,
exists on the instance.
Assuming bundles A and B both export {{org.example}}, A with version {{1.0.0}}
and B with version {{2.0.0}}, when the
{{org.apache.sling.commons.classloader.impl.PackageAdminClassLoader}} is
queried to resolve a class only available in A, it will try to resolve it from
B. This happens because the
{{org.apache.sling.commons.classloader.impl.PackageAdminClassLoader}} only
checks the bundle that provides the highest API (in terms of version number) of
the class' providing package.
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