[Building Sakai] SAK-15874 Java 1.6 transition

[Steve Swinsburg]

This is a good interim step. It should probably have been done a while ago
since 1.5 has been EOL'd for a long time now but better late than never!

I for one have been using JDK 1.6 to build Sakai for over a year and have
had no issues. Ideally, JSF based tools should be upgraded to JSF 1.2 to
work in Java 1.6 without the -Dsun.lang.ClassLoader.allowArraySyntax=true in
JAVA_OPTS.

Here's the JIRA tracking the 1.6 upgrade:
http://jira.sakaiproject.org/browse/SAK-15874

cheers,
Steve

On Thu, Nov 19, 2009 at 3:01 AM, David Haines <dlhaines at umich.edu> wrote:

> The primary current goal for moving to Java 1.6 is to break the dependency
> on tools that will not be updated.  The least disruptive option for moving
> to Java 1.6 would be to just change the default Sakai build configuration to
> use the Java 1.6 SDK and JVM and set the compile options to expect 1.5
> source and target a 1.5 JVM.  This requires only infrastructure changes.
> There have been installations running the current binaries with a 1.6 JVM so
> targeting a 1.5 JVM should not be a problem.
>
> The changes required would be:
> - Change the default SDK for compilation to be 1.6
> - Add " -Dsun.lang.ClassLoader.allowArraySyntax=true " to JAVA_OPTS
> - Modify GC parameters if necessary.
>
> Changing the configuration on the QA servers ought to be straightforward.
> This means that the new releases would not be tested on a 1.5 JVM, but given
> limited resources we can't explicitly support everything forever.  Making
> the change now would provide installations time to make a planned transition
> rather than a sudden ad hoc transition when something breaks.  It also
> provides time for Sakai to move away from requiring 1.5 source compatibility
> gradually.
>
> Comments?
>
> - Dave
>
> David Haines
> CTools Developer
> Digital Media Commons
> University of Michigan
> dlhaines at umich.edu
>
>
>
>
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