Nested element problem in custom task

[Gilles QUERRET <gi...@free.fr>]

Hello,


Short story : I have an issue when adding a child element to its father 
: child's attribute are not set when in addChild(Child element) method...

-- build.xml fragment --
<MyTask>
   <Child attribute="value" />
   <Child attribute="value2" />
   ...
</MyTask>

In the classfile for Child, there's a setAttribute(String) method.
In the classfile for MyTask, there's a addChild(Child) method.
When the task is run, I enter the addChild method, with a newly created 
Child object, but attribute's value is null.

Question : is this the normal behavior ? I just want to create a HashMap 
with this attribute as a key, and the Child object as value. Or is there 
  another place where I should create my HashMap ?

Thanks

Gilles QUERRET
http://pct.sf.net

PS : please also CC me, I'm not a ant-user subscriber.

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Re: Nested element problem in custom task

[Conor MacNeill <co...@apache.org>]

This is expected behaviour. When the Child instance is added to MyTask,
it is not yet configured (i.e. its attributes are not yet set) . It will
be configured by the time your task's execute() method is called. The
normal strategy is just to accumulate the Child objects in a collection
and only use them in the execute() method.

If you must have the Child elements configured before being given to
your task, change the name of the addChild() method to
addConfiguredChild(). Ant will then configure the Child elements before
passing them to your task.

Conor


Gilles QUERRET wrote:
> Hello,
> 
> 
> Short story : I have an issue when adding a child element to its father
> : child's attribute are not set when in addChild(Child element) method...
> 
> -- build.xml fragment --
> <MyTask>
>   <Child attribute="value" />
>   <Child attribute="value2" />
>   ...
> </MyTask>
> 
> In the classfile for Child, there's a setAttribute(String) method.
> In the classfile for MyTask, there's a addChild(Child) method.
> When the task is run, I enter the addChild method, with a newly created
> Child object, but attribute's value is null.
> 
> Question : is this the normal behavior ? I just want to create a HashMap
> with this attribute as a key, and the Child object as value. Or is there
>  another place where I should create my HashMap ?
> 
> Thanks
> 
> Gilles QUERRET
> http://pct.sf.net
> 
> PS : please also CC me, I'm not a ant-user subscriber.
> 
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: user-unsubscribe@ant.apache.org
> For additional commands, e-mail: user-help@ant.apache.org
> 
> 

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