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Re: [udig-devel] RFC : native support bundles for java advanced imaging
You are correct; if you can get the jars into the mix using another technique then we do not need to make use of them as a JRE extension.

I do have one small word of caution - JAI and ImageIO use the Java Service Provider Interface technique to "plugin" to each other. This technique is not compatible with OSGi; as OSGi does not allow a plugin to advertise the META-INF/services folder anymore.

GeoTools also suffers this problem; I have tried a couple tricks; such as making the plugins share a buddy class loader; but thus far have not been successful.
-- 
Jody Garnett

On Thursday, 22 December 2011 at 12:08 AM, Frank Gasdorf wrote:

Just reviewed the bundles:
net.refractions.udig.jai and net.refractions.udig.jai.macosx

What I assume what the fragments for, please correct me, if I'm wrong:
- if jai and imageio are not in the classpath - (JaiInstallerBootstrap
-> ClassNotFoundException check) it tries to copy libraries into
possible folders (platform dependent -> therefor a mac fragment and
one for all others)
- after copying the application will restart
(PlatformUI.getWorkbench().restart()) and the libraries should be in
the classpath if everything is going right.

Right now I would say, that this would not be required anymore if we
ship udig with the JAI/ImageIO bundles and its relevant platform
dependent fragments. In addition to that we could kick out the
duplicated jar files and the partly duplicated code (of this two
fragments) as well. I've now idea how this would work in a restricted
environment, where the user can't install software and hasn't the
right to do its (administrator in windows systems)... Interesting

Any opinions?

Frank

--
Jody Garnett

On Tuesday, 20 December 2011 at 6:47 PM, Frank Gasdorf wrote:

Hello List,

I would like to discuss a proposal to add JAI native support for uDIG
out of the box without preparing and bundling a JRE before roll out
releases.

Please have a look at


Feedback is warmly welcome
Cheers
-Frank


PS: could that proposal be interesting for users (SDK) as well?
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