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From "Scot P. Floess" <>
Subject Re: while-like structure in Ant
Date Fri, 18 May 2007 16:15:48 GMT

Can you email me your examples?  I may be able to help you out...  
Sorry, I started a new job a few months ago and I seem to have very 
little free time - I've been rather quiet here lately because of it...

Guru Balse wrote:
> FYI: Scot Floess ( 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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Scot P. Floess
27 Lake Royale
Louisburg, NC  27549

252-478-8087 (Home)
919-392-6730 (Work)

Chief Architect JPlate
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