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From Peter Donald <>
Subject Re: [RFC] AbstractTasklet with extended functionality
Date Fri, 30 Jun 2000 03:18:47 GMT
Uggggg. I said Testlet in many places where I should of said Tasklet. Fixed
now I hope :P

At 01:12  30/6/00 +1000, you wrote:
>I have another request that I am not 100% sure about yet but are just
>throwing it out for comments. A couple of my tasks are getting rediculously
>large - mainly due to huge number of property setters. Also I am getting an
>increasing amount of  validation code in execute method. So what I would
>like to suggest is some work at delegating more responsibility to
>AbstractTasklet class and less to the other classes in Ant. Essentially
>what I would like to see is that the interface for Task be reduced to simply
>void execute( TaskContext context )
>TaskContext would hold all parameters and also give access to functionality
>like path transformation etc.
>However as this would brake 100% of current tasks there may be use in
>creating an AbstractTasklet that implements some of the missing
>functionality. Any of the old tasks can simply inherit from AbstractTasklet
>and work as they do now.
>The most important things that AbstractTasklet does is implement:
>void execute( TaskContext context )
>It would implement it in a manner such that it gets all parameters, then
>through reflection sets them all in the same way that they are set now. It
>would then call init() and execute() of the task. This would mean that all
>tasks would work as they do now as long as they inherited from void
>AbstractTasklet. However this would allow some tasks to do all sorts of
>wierd and wonderful things, including partial automatic validation. This
>would greatly reduce the work needed to write a new task and similar
>approaches have been taken in other frameworks. Servlets already do this
>partially via Generic/HttpServlet and I do it in a few of my own frameworks
>(Gamelet,Testlet etc) so it is not too radical. It just makes writing tasks
>so much easier :P.
>Thoughts ?
>| "Nearly all men can stand adversity, but if you want |
>| to test a man's character, give him power."          |
>|       -Abraham Lincoln                               |


| "Nearly all men can stand adversity, but if you want |
| to test a man's character, give him power."          |
|       -Abraham Lincoln                               |

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