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From "Thomas Haas" <>
Subject Re: Ant Principles
Date Thu, 20 Apr 2000 22:59:29 GMT

> From: Kuiper, Arnout <>
> Nested objects
> ==============
>   Suppose the type is Foo.
>   1. Check if Foo(String) exists. If so, use it, and we're done.
>   2. Check if Foo(double) exists. If so, cast String to double,
>      use it, and we're done.
>   3. iterate step 2 for each primitive type.
>   4. Failure...

Random thought:
Would a factory method instead of the constructor add value to your
public static Foo create(String)
We get the possibility of returning a subclass of Foo instead of Foo itself.
However I cannot think of a situation right now, where I could use it. And
the same effect could be achieved by using a strategie object.

> - Nested elements are added with reflection. Look for a method
>   with the signature "void addObject(Type value)", where Object
>   is the name of the element. An object of type Type is instantiated,
>   and we recurse on that nested element. I think addFoo is better
>   than setFoo, because we can have multiple elements with the same tag.
>   In the following example, two include objects are added. If you named
>   the method setInclude, you might expect that only the last include is
>   known.

This implies a subclass of a task cannot use a subclass of Type as Object?
I like your proposal, but I am unsure, if this limitation makes reuse of
tasks more difficult. Anyone?

- tom

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