Matt Benson wrote:
On Feb 25, 2010, at 10:53 AM, Dominique Devienne wrote:
On Thu, Feb 25, 2010 at 10:00 AM, Gilles Scokart <gscok...@gmail.com>
wrote:
Did you have any example to demonstrates the benefits of such task ?
The benefits with conjunction with <import> could be important, in
that you can "mix-in" specialized pre-defined builds dealing with
specific concerns (like JAXB pre-compilation for example) and have
those builds "implicitly" augment the classpath or Javac source path
appropriately for example (as documented in those builds, and you do
explicitly import those, so are kinda in control). Sure, it does open
the door for some complexity, and Ant would enter some un-chartered
waters indeed, but when trying to design reusable builds in the
(distant now) past, I've often felt the need for such a feature. Yet
it doesn't necessarily mean that would have been the right solution
either. I'd be interesting to have the input of the EasyAnt people on
the matter in fact. Maybe an opt-in approach, explicitly adding
final="false" on those datatype ids *designed* for extension, would be
I could live with this. :) We could also include a magic property
for the default.
I do not like very much magic properties. I think we would be fine if by
default all datatypes instances can be augmented. In fact they can
already by special tasks or scripting. Adding a new attribute final on
datatypes allowing users to write
<fileset id="myunmodifiablefileset" final="true" dir="foo/bar">
<include name="special.txt"/>
</fileset>
would be fine.
Regards,
Antoine
Having the augmentation feature supported at such a low level would
help establish its specialness, which is most evident in its (ab)use
of the id attribute, which decision I must stand by, however, since
this is the only attribute we should be guaranteed not to need to
modify on the original referenced object.
-Matt
a more conservative introduction of this feature, although that does
force to have "perfect hindsight" into what will be necessary to
extend/augment or not. --DD
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