How does this affect debugging?
Regards,
Alan
On 1/3/2006 8:39 AM, Aaron Mulder wrote:
That sounds pretty interesting -- does it really fully handle
annotations? I thought some of those could be inspected at runtime
and I'm not sure how that could be supported in 1.4, but I really
don't know that much about it.
On a similar note, it would be great if someone could look into why
DayTrader blows up if run under 1.5.
Aaron
On 12/30/05, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
First a quick bit of background on why Retrotranslator rocks...
http://radio.weblogs.com/0112098/2005/12/29.html#a546
Retrotranslator can take any Java 5 bytecode using generics,
annotations, auto-boxing, varargs & java.util.concurrent utilities
and generate regular 1.4 bytecode that runs just fine on Java 1.4.
The 1.4 bytecode uses backport-util-concurrent.jar for the
java.util.concurrent stuff, retrotranslator_runtime.jar for other new
methods added to Java 5 such as new reflection/generics stuff and
asm.jar is currently used to read the annotations. So if you only use
the Java 5 concurrent APIs then the only new dependency added on 1.4
is backport-util-concurrent.
We should be able to create a maven 2 plugin (I've already started)
which uses Java 5 for the build to make a Java 5 binary but also
creates a 1.4 compliant binary.
http://svn.mojo.codehaus.org/trunk/mojo/mojo-sandbox/retrotranslator-
maven-plugin/
We should hopefully be able to run tests against both JVMs for each
binary too.
Now given that Java 5 concurrent is faster than backport-util-
concurrent.jar & concurrent.jar it would be good for us to use this
by default throughout the Geronimo family of projects. Similarly it
would be extremely useful to start using annotations and generics &
the new for loop can be handy too.
So I wonder; should we experiment with 1 module using Java 5 and
creating a 1.4 binary jar? (I'm quite tempted to try this in ActiveMQ
to see how it goes). If we start with just the java.util.concurrent <-
> backport.util.concurrent it'd be fairly easy to switch back again
later if we hit some showstopper.
Thoughts?
James
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http://radio.weblogs.com/0112098/
