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Loadtime-Weaving for Eclipse Plugins [message #664892]

Tue, 12 April 2011 12:48

Christian Halstrick

Messages: 274
Registered: July 2009

Senior Member

Hi,

I am developing for the EGit/JGit projects at eclipse. I would like to use AJDT to write aspects for the plugins we develop in this project. Ideally I don't want to touch the plugin projects at all - I would like to write aspects in an own Aspect/J project and then start a runtime workbench with aspects for the code in the plugins beeing active. I tried several things which don't work (I don't see the output which the aspects should produce). Is there any step-by-step docu how to use loadtime-weaving when developing eclipse plugins?
To be more specific: How do I launch a runtime-workbench with aspects beeing weaved in which are defined in a seperate project. Does that seperata project needs to be plugin-project/fragment/...?

Ciao
Chris

Ciao
Chris

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Re: Loadtime-Weaving for Eclipse Plugins [message #664976 is a reply to message #664892]

Tue, 12 April 2011 16:30

Andrew Eisenberg

Messages: 382
Registered: July 2009

Senior Member

Because Eclipse is built on OSGi and each Eclipse plugin/bundle uses its own class loader, a standard LTW approach will not work.

You have two possibilities for using AspectJ with OSGi:

1. Each aspect is built in-project and only weaves into classes in the same project. This would require compile time weaving (and a couple of extra lines in your pde build,properties file).
2. Use Equinox weaving (aka Equinox aspects): http://www.eclipse.org/equinox/incubator/aspects/

I think you would best be served by the second approach, even though it is a bit more complicated to configure. There is a quick launch on the website linked above. And also, the latest Equiniox weaving bits can be downloaded from the AJDT update site.

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