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From Stefan Bodewig <bode...@apache.org>
Subject Re: PropertyFile task is optional?
Date Tue, 01 Feb 2005 08:34:57 GMT
On Mon, 31 Jan 2005, Douglas Kramer <Douglas.Kramer@sun.com> wrote:

> Stefan Bodewig wrote:

>> PropertyFile doesn't need any additional library.
> 
> Then why is it an Optional task?

Because we once decided to call it an optional task.

> What's optional about it?  Did it used to be optional?

There may have been a JDK 1.2 dependency when Ant was supposed to work
on JDK 1.1, I'm not sure.

> In fact, the following paragraph refers to core tasks as "built-in",
> implying that optional tasks are not built-in:
> 
>    There is a set of <a href="coretasklist">built-in tasks</a>,
>    along with a number of <a href="optionaltasklist">optional
>    tasks</a>, but it is also very easy to write your own.

It's pretty much along the lines of Peter's answer, built-in = "part of
ant.jar"

> If it was optional for some earlier version of Ant but is
> no longer optional, please document at which version it
> became core.

Really, there is no clear distinction between core and optional.  Much
of it is historic.

>>>But the documentation doesn't seem to mention clearly which
>>>libraries they reside in.
>> The tasks reside in the Ant download, you need the library to run
>> the tasks.
> 
> I don't understand this.  I need which library to run the tasks?

Maybe it gets easier if we use a concrete example, <junit>.  The junit
task is in ant-junit.jar, which is part of the Ant 1.6.2 binary
release bundles.  To run the task, you need JUnit itself in addition
to the task.

Stefan

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