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From "Anderson Jonathan" <>
Subject RE: Java1.3 (was Re: Axis and NIO)
Date Wed, 15 Oct 2003 18:28:36 GMT
Very probably my fault for misunderstanding, and not Juha's.  :)

-----Original Message-----
Sent: Wednesday, October 15, 2003 2:23 PM
Subject: RE: Java1.3 (was Re: Axis and NIO)

Juha's argument is pretty specious -- there's nothing in the reflection APIs
that's changed dramatically in 1.4; rather, the changes are in the VM
itself.  So it's entirely possible to use a codebase that's 1.3 API
compatible on a 1.4 VM and get the same performance gains in reflection.
Indeed, it's a good idea to do just that.

Wanting to use the new APIs is a separate issue.  There's lots of good stuff
in there, but that's not related to the reflection performance issue.

-----Original Message-----
From: Anderson Jonathan []
Sent: Wednesday, October 15, 2003 11:19 AM
Subject: RE: Java1.3 (was Re: Axis and NIO)

Juha Lindfors from JBoss informed me at JBoss Advanced training that they'd
made the decision to require 1.4+ for JBoss 4 based almost exclusively on
the performance increases when using reflection.    I know Axis uses
reflection as well, just not sure how much.  JBoss uses is extensively
(JMX).  He went on, "plus, there was some stuff in there we'd like to use as
well."  :)


-----Original Message-----
From: Kellogg, Richard [mailto:RKellogg@MICROS.COM]
Sent: Wednesday, October 15, 2003 2:05 PM
Subject: RE: Java1.3 (was Re: Axis and NIO)

Interesting facts:

JBoss 3.2 and earlier will run on 1.3+ JVMs. JBoss 4.0 requires 1.4+ JVMs
JRun 4 requires 1.3.1+ JVMs.

As a result, we will probably be on JDK 1.3 for some time.

-----Original Message-----
From: Steve Loughran []
Sent: Wednesday, October 15, 2003 1:45 PM
Subject: Java1.3 (was Re: Axis and NIO)

Kellogg, Richard wrote:
> Question: How much longer do we plan on supporting JDK 1.3.x?  I know we
plan on supporting it in Axis 1.2 but what after that release?  Would we
gain any performance increases by requiring JDK 1.4.x?  Food for thought.
> Rick

That is something the dev team can vote on, though I would encourage an
informal poll of the user list before doing it.

A big issue is what about app servers that use Axis: IBM, Macromedia,
Borland and JBoss will all have opinions on the matter. Unless they want
to move to JAva1.4 only, Axis needs to support 1.3 land for some time more.

On a related note, when can we move to Servlets2.3? I think the extra
lifecycle events would let us do cleanups better, and the JAX-RPC spec
does actually say 'Servlets 2.3'...

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