Mike Matrigali wrote:
If I only have jdk1.5 environment will the build succeed, and if so will
it identify if I have somehow used a jdk1.5 specific library function in
a "non-optional" part of the code?
Hi Mike,
You will still need jdk 1.4 and you will still need to set j14lib in
your ant.properties. That doesn't change. The Java 5 compiler will
object if mandatory code uses a Java 5 feature.
How is optional vs. non-optional code specified? Is this an ant xml
file property in the directory for the code?
Today, by default, all code is mandatory. You have to go out of your way
to make code optional. I think that's a good model and I think we should
stick with this model as we go forward. Today there are special build
targets for the optional JSR169 and JDBC4 code. I think this is a good
model to follow when we start introducing optional code which only runs
on Java 5.
Regards,
-Rick
/mikem
Rick Hillegas wrote:
Please vote on whether we should require that developers use a Java 5
(or later) compiler in order to build Derby. This means that the
shell window running the build should have its JAVA_HOME pointed at a
Java 5 or later jdk and the corresponding javac should be what's
visible on PATH. The practical implication of this change is that the
Derby build will fail when run from a jdk1.4 environment.
Please note that, even after this vote, we still expect the following
to hold:
1) All mandatory Derby code must still be at jdk1.4 (or earlier)
level. The build will still compile mandatory code into classes that
run on jdk1.4.
2) Derby 10.4 will continue to run on the same platforms that 10.3
does--including the CDC small platforms.
This change will make the following possible:
A) Optional product code can be written which takes advantage of Java
5 features. This code will only run if Derby detects that it is
running on a vm at level Java 5 or later.
B) Test code can be written to make sure that Derby correctly
interacts with user code which is at Java 5 level or later.
This is a lazy consensus vote. The polls close at 5:00 pm on
Wednesday October 3.
Regards,
-Rick
