Re: [e4-dev] Re: Trident (was: animations)

[Kirill Grouchnikov <kirillcool@xxxxxxxxx>]

Hi Boris

You raise valid concerns about the JDK level. Right now, apart from the @Override stuff, SwingWorker is the only class in Trident that actually requires Java 6.

I cannot promise that all future versions of Trident core are going to be Java 5 compatible. Up until now i didn't need any of the new collection APIs added in Java 6, but i don't know what type of bugs / enhancements will require using those APIs, or any other new core functionality added in Java 6.

I can remove the @Override annotations and change the build script to produce the core / Swing / SWT / Android bits as four separate libraries, and have people playing with Trident - to test it as one possible animation library for use in e4.

Thanks
Kirill

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From: Boris Bokowski <Boris_Bokowski@xxxxxxxxxx>
To: E4 Project developer mailing list <e4-dev@xxxxxxxxxxx>
Sent: Fri, December 4, 2009 2:56:47 PM
Subject: Re: [e4-dev] Re: Trident (was: animations)

Hi Kirill,

> Thanks for the comments. It looks like we are talking about minor
> issues - how Trident is implemented. That's a lot of valid points
> that we can discuss in this list or in the project mailing lists.

You are right - we may want to take this off list or discuss it in the issue tracker over at http://kenai.com/projects/trident.

There is one more thing at this level though - your code currently requires Java 6, and we would like e4 to be usable on 1.5 VMs as well. I went through the code (the core and SWT parts), and the only 1.6 feature you are using is the ability to annotate methods with @Override when they are just implementing a method from an interface. Would you be able to produce a version of Trident (just the core and SWT parts) without these annotations? More importantly, would you be able to promise, going forward, that you won't introduce dependencies on anything that is only available in the 1.6 class libraries, from the core and SWT parts? Obviously, at some point in the future, requiring 1.6 instead of 1.5 may make sense for e4, but we're not there yet.

Boris