| while-like structure in Ant | while-like structure in Ant 2007-05-18 - By Guru Balse
FYI: Scot Floess (floess@(protected)) has implemented some great loop
solutions using <math> and <for> from ant-contrib.
Steve Loughran wrote:
> Emir Mahmut BAHSI wrote:
>> Hi all,
>> I have been working on conditional structures and loop structures on
>> existing workflow managers for a long time. For this purpose I have
>> implemented two simple examples for if-type and switch-type cases
>> (examples are attached). In these examples my program is simply
>> downloading a file. If that file does not exist in the first web
>> address it tries another address. However, I could not implement a
>> loop structure for that. In the loop case the program should try the
>> same address until the file exists. Actually I know this is not a
>> reasonable and useful scenario but I just want to show whether a
>> conditional-loop scenario can be implemented in Ant.
>>
>> Can u suggest me anything to implement that example. Any help is
>> appreciated.
>>
>> Thanks.
>>
>
> Ant is not a general purpose workflow manager. That means we get to
> avoid a lot of the workflowy concepts of conditions, choices and
> loops, or the pi-calculus constructs. And it doesnt come with anyy
> failure handling.
>
> What it does have is some simple conditions, the option to skip
> targets or fail the build on the state of conditions, and the ability
> to block until a condition is met.
>
> if all you want is for the build to pause until a file is present, use
> the <waitfor> task,
>
> -steve
>
>
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