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Re: [cross-project-issues-dev] Java 1.5

<crank up the broken record player...>

Project teams should consider very (very) carefully the implications of increasing the level of their required execution environments.  In particular, consider what (dis)service you are doing for your consumers.  In what way will their lives or functionality be improved by the move?  "Needlessly" upping the required EE limits the scenarios in which your function can be used.  That may in turn limit its uptake and spread.  

If you find that upping the EE level makes sense, it would be good to then consider method and techniques for provising degraded function on lower EEs.  For example, (and just as an example) you might introduce a 1.5 layer over the 1.4-based APIs or change the implementation to conditionally use 1.5 functionality.

Note also that careful consideration should be paid to API evolution issues.  If you create API that uses 1.5 language features, you should familiarize yourself with the implications and gotchas associated with these structures.  I don't remember the details but do recall that there were some subtleties around generics that, unless handled well, could severly limit you in the future (or break your users).

Finally, also consider that it may be possible to limit the scope of this impact to a particular set fo (hopefully higher level) plugins.  As John pointed out in one of the replies, the platform team is successfully targettting a wide ranges of EEs from Foundation 1.0 to Java6 in its plugin set.  PDE has first class support for this approach so confusion and error should be virtually elimintaed.

All of this is not to say that you should not use 1.5 etc but rather consider including in your plans the goal of limiting dependencies as much as possible.

</spin down and I'll fade away...>


Doug Schaefer <DSchaefer@xxxxxxx>
Sent by: cross-project-issues-dev-bounces@xxxxxxxxxxx

10/05/2006 04:13 PM

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[cross-project-issues-dev] Java 1.5

Hey gang, I’m just wondering if any of the projects participating in Europa are planning on dropping support for Java 1.4, i.e. are planning on using Java 1.5 features.
Doug Schaefer
QNX Software Systems
Eclipse CDT Project Lead
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