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Posted to ivy-user@ant.apache.org by Eran Bartenstein <eb...@hotmail.com> on 2007/01/28 10:09:36 UTC

Problem extending ivy tasks due to classloader usage.

Hi,

I have written my own task. My task extends the cachepath task.
However, it seems that I can not find a way to use it.
The problem is that Ivy tasks are loaded into ant classloader prior to my 
taskdef decleration.
The reason it is done that way, is since I want to keep the ivy bundle 
intact rather than repack it.
Also I do not want to pack all ivy jars with my project.

Thus, when trying to use my task (which requires ivy in the classapth) - if 
I specify ivy jar in the taskdef classpath I get a classcast exeption (due 
to different classloaders). When ommiting it - ivy jar is obviously missing 
in my classpath.

Is there a way to hang one classloader under the ivy one ?
Is there another way to extend ivy tasks from my code ?

BTW - the task enables cachepath filtering for dependencies, dependending on 
a set of specified extra attrbiutes.

Thanks,
           Eran B.

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Re: Problem extending ivy tasks due to classloader usage.

Posted by St...@ipaustralia.gov.au.
Hi Eran,
if you are working with Ant 1.6.1 (or higher) have you considered using 
the Ant plug-in mechanism?

e.g. <project xmlns:ivy="antlib:fr.jayasoft.ivy.ant" 
xmlns:yourLib="antlib:..." >

Regards,
Stephen




"Eran Bartenstein" <eb...@hotmail.com> 
29/01/2007 09:20 AM
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Problem extending ivy tasks due to classloader usage.






Hi,

I have written my own task. My task extends the cachepath task.
However, it seems that I can not find a way to use it.
The problem is that Ivy tasks are loaded into ant classloader prior to my 
taskdef decleration.
The reason it is done that way, is since I want to keep the ivy bundle 
intact rather than repack it.
Also I do not want to pack all ivy jars with my project.

Thus, when trying to use my task (which requires ivy in the classapth) - 
if 
I specify ivy jar in the taskdef classpath I get a classcast exeption (due 

to different classloaders). When ommiting it - ivy jar is obviously 
missing 
in my classpath.

Is there a way to hang one classloader under the ivy one ?
Is there another way to extend ivy tasks from my code ?

BTW - the task enables cachepath filtering for dependencies, dependending 
on 
a set of specified extra attrbiutes.

Thanks,
           Eran B.

_________________________________________________________________
Express yourself instantly with MSN Messenger! Download today it's FREE! 
http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/