Check null attributes in custom task

[chuanjiang lo]

Hi all,

I have written an ant custom task..
something like..

<MyCustomTask>
   <NestedTask value="">
         <NestedNestedTask value=""/>
         .....
   </NestedTask>
</MyCustomTask>


What is the usual practice for checking if NestedTask and NestedNestedTask
value is not null.

Do i do it in the execute method of MyCustomTask and loop through the
vectorsand get the NestedTask object out and check the value?

Or is there a faster way to implement this?

Appreciate any inputs