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Setting a custom classloader for my plug-in [message #811639]

Fri, 02 March 2012 16:30

Mikael Davidsson

Messages: 2
Registered: March 2012
Location: Stockholm

Junior Member

Hi,

Im trying to integrate an existing app into a Eclipse plugin. The app is using a custom classloader to download requested classes over the network. However im having problems to get the plugin to use the custom classloader. Is there any way to hook the custom classloader into the plug-in's classloader chain during start-up of the plug-in? What is the recommended approach when using custom classloaders?

All my attempts so far has resulted in the following exception:
Caused by: java.lang.ClassNotFoundException: my.downloaded.stuff.MgmtUtils
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal (BundleLoader.java:513)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:429)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:417)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)

Regards
Mikael

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Re: Setting a custom classloader for my plug-in [message #813943 is a reply to message #811639]

Mon, 05 March 2012 21:46

Paul Webster

Messages: 6859
Registered: July 2009
Location: Ottawa

Senior Member

You should look at http://wiki.eclipse.org/Adaptor_Hooks there is a classloading hook that would allow you to hook into your bundles class-loader.

PW

Paul Webster
http://wiki.eclipse.org/Platform_Command_Framework
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Re: Setting a custom classloader for my plug-in [message #813952 is a reply to message #813943]

Mon, 05 March 2012 21:52

Thomas Schindl

Messages: 6651
Registered: July 2009

Senior Member

If you need a running example take a look at e(fx)clipse and how it
loads JavaFX from an external resource using adapter hooks.

https://github.com/tomsontom/e-fx-clipse/tree/master/at.bestsolution.efxclipse.runtime.osgi/src/at/bestsolution/efxclipse/runtime/osgi/fxloader

Tom

Am 05.03.12 22:46, schrieb Paul Webster:
> You should look at http://wiki.eclipse.org/Adaptor_Hooks there is a
> classloading hook that would allow you to hook into your bundles
> class-loader.
>
> PW
>

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