OSGi plugin - MANIFEST.MF being overriden changed at runtime

Question

Do you guys know if there is some way to change the MANISFEST.MF settings programmaticaly at time to load a plugin? It would be perfect for me if I could do that on Activator start method.

For example:

I have a plugin1 that have a dependency on its MANIFEST.MF to plugin2 (Require-Bundle: plugin2;bundle-version="1.0.0")> The change a wanna do is to set reexport such dependency before (visibility:=reexport) load plugin1.

Any suggestion

Thanks in advance

Raphael Moita

Answer 1

You cannot change the manifest. The manifest contains declarative information need to resolve the bundle and supply it a class loader with visibility to the necessary types. Your activator class is loaded by that class loader. How can you expect a class loaded the class loader to change the definition of the classes visible to the class loader?

Why don't you just modify the manifest before installing the bundle?