[udig-devel] jai is driving me cray

[Zlatko Perenda]

Based on your google investigation and expcetion...Yes. It appears you have
multiple copies loaded by different class loaders, hence different objects,
as object is defined by its fully qualified name and its class loader, and
class cast exception arises. 

Hm, how does eclipse handle class loading? Does every plugin has its own
child class loader or... ? Maybe this is the root of your problem...





-----Original Message-----
From: udig-devel-bounces at lists.refractions.net
[mailto:udig-devel-bounces at lists.refractions.net] On Behalf Of Andrea
Antonello
Sent: Wednesday, April 04, 2007 1:22 PM
To: User-friendly Desktop Internet GIS
Subject: [udig-devel] jai is driving me cray

Hi folks, I have (once again) a problem with jai:

java.lang.ClassCastException:
com.sun.media.jai.imageioimpl.ImageReadWriteSpi
	at
javax.media.jai.OperationRegistry.registerServices(OperationRegistry.java:20
47)
	at
javax.media.jai.ThreadSafeOperationRegistry.registerServices(ThreadSafeOpera
tionRegistry.java:612)
	at
javax.media.jai.OperationRegistry.initializeRegistry(OperationRegistry.java:
365)
	at javax.media.jai.JAI.<clinit>(JAI.java:560)


So what is the best practice?
Udig has it bundled inside the supplied jre, but I guess also in the
libs? I read in google that the above error can appear when that one jai
installation conflicts with another jai library.

Anyone knows the real truth?
Also that anyone could please tell me the best way to keep jai only in
one place and try to be sure that no product is delivered without it?

Thanks for any advice,
Cheers,
Andrea
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