Hello all,
I submitted a patch recently on Ant's bugzilla, and I'd like to discuss it
here in the list.
The initial idea would be to add a command line parameter (-loop) to ant, so
it can run in loop mode.
In this mode, once the tasks are finished, ant will wait for the user to press
Enter to run the tasks again or q to quit (similar to incremental compilation
on Jikes).
That would be pretty useful in situations where a task must be performed many
times in a short period of time - like redeploying modified JSP pages to a
web container: usually these task itself is almost instantaneous, but it
takes about 5-6 seconds using the regular ant due to the overhead caused by
the JVM invocation.
With this patch, the new tasks are executed really fast, as shown below:
ant -loop copy_web_oc4j
Buildfile: build.xml
copy_web_oc4j:
[copy] Copying 1 file to /home/felipeal/eInquiry/build/deploy/oc4j/CSNAPP
BUILD SUCCESSFUL
Total time: 2 seconds // first evocation, took 2 seconds
Press Enter to continue or q + Enter to quit
copy_web_oc4j:
[copy] Copying 1 file to /home/felipeal/eInquiry/build/deploy/oc4j/CSNAPP
BUILD SUCCESSFUL
Total time: 0 seconds // sub-sequent iterations: 0 seconds
Press Enter to continue or q + Enter to quit
I submitted a first patch yesterday (even though we'been been using it
internally in my company for a couple of days) and talked with Antoine in
private, and he pointed a valid issue: the patch was too simplistic. For
instance, how would an IDE handle the System.in calls?
So, even though most IDEs call ant in a particular way, I improved the patch a
little bit: now the Main class has 2 new attributes, loopMode and
loopHandler, which could be set by the IDEs. LoopHandler is a new interface,
whose default implementation uses System.in.read().
So, what do you guys think of the patch? I think it would be really useful,
and easy to implement (of course, if I didn't think so I wouldn't suggest it
:-). If it is accepted, I could offer more help documenting and testing it
(personally and with the participation of folks at my company and JUG).
Regards,
Felipe
PS: here is the enhancement's URL:
http://nagoya.apache.org/bugzilla/show_bug.cgi?id=22428
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
