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From <>
Subject AW: AW: while-like structure in Ant
Date Tue, 31 Jul 2007 07:32:11 GMT
A condition is a different thing than a task
- a condition checks something
- a task does something.
Of course an implementing class maybe can do both (<available> <antversion>).

For HTTP there are two different implementations:
- condition <http>
- task <get>
(- http AntLib )


>-----Urspr√ľngliche Nachricht-----
>Von: Emir Mahmut BAHSI [] 
>Gesendet: Montag, 30. Juli 2007 23:34
>An: Ant Users List
>Betreff: Re: AW: while-like structure in Ant
>It is a good point! Http task is one of the core conditions 
>that can be used as a nested element in condition task. 
>However I do not know why it is not listed in the manual as a 
>core task :) May be it is because of being a nested element 
>for condition task (core condition).
>Emir M Bahsi
> wrote: Which  task? Ant Core doesnt 
>have one.
>>-----Urspr√ľngliche Nachricht-----
>>Von: Emir Mahmut BAHSI [] 
>>Gesendet: Sonntag, 29. Juli 2007 00:27
>>An: Ant Users List
>>Betreff: RE: while-like structure in Ant
>>Sorry everybody for the late replay. I am trying to implement 
>>that while structure as I explained before. I am using 
>>javascript for that. However, I can not create a http task in 
>>javascript code. That part of the code is:
>>myhttp = project.createTask("http");
>>myhttp.setUrl("a url address");
>>The error is: javax.script.ScriptException: 
>> TypeError: 
>>Cannot call method "setUrl" of null <#5> in 
>> at line number 5
>>Any help is appreciated. Thanks in advance.
>>Emir Mahmut Bahsi
>>"Rebhan, Gilbert"  wrote:  
>>-----Original Message-----
>>From: Xavier Hanin [] 
>>Sent: Thursday, May 10, 2007 9:17 AM
>>To: Ant Users List
>>Subject: Re: while-like structure in Ant
>>On 5/10/07, 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
>>> 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
>>> However, I could not implement a loop structure for that. 
>In the loop
>>> 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
>>> whether a conditional-loop scenario can be implemented in Ant.
>>> Can u suggest me anything to implement that example. Any help is
>>> appreciated.
>>The ant-contrib project is providing conditional tasks which may help,
>>if you want to have your own syntax and the very specific url
>>as a condition (like you wrote), maybe using a script (using scriptdef
>>example) would be a good fit.
>>i would go via  and a scripting language running in
>>(JRuby, Groovy, Beanshell ... )
>>or use the AntBuilder@Groovy
>>see =
>>Regards, Gilbert
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