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Message-ID: <001e01c196b9$cd166e40$0100a8c0@jose>
From: "Jose Alberto Fernandez" <j_a_fernandez@yahoo.com>
To: "Ant Developers List" <ant-dev@jakarta.apache.org>
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Subject: Re: IntrospectionHelper request
Date: Sun, 6 Jan 2002 13:55:28 -0000
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From: "Erik Hatcher" <jakarta-ant@ehatchersolutions.com>

> Without delving deep into IntrospectionHelper, I'd like to bounce off =
an
> idea and see how its taken.  Create an interface (named DynaTask? - =
I've
> been following commons-dev DynaBean discussions so can't think of =
anything
> more original) that has a method (setDynaAttribute?) with the =
signature
> setDynaAttribute(String name, String value).  If no setter is found in =
the
> current process of finding one, if the class implements the "dynamic"
> interface then the interfaces method is called.
>=20

This comment may be good or bad for the acceptance of what you are =
proposing
(given my record of success of the list ;-) ). I am all for something =
like this.

I would go a step further and also require your dynamic interface to =
manage
elements (as well as attributes). So the interface would be something =
like:

    interface DynamicConfigurator {
        void setDynamicAttribute(String name, String value);
        Object createDynamicElement(String name);
    }

This will allow writing tasks that have their own dynamic subset of =
valid
elements, for example <ejb-jar> would not have to be modified every time
a new EJB container is supported, but instead the new plug-in will be =
declared
in some registry and the task will use createDynamicElement() to search =
for the correct
plug-in element to instantiate.

The same is applicable to things like <conditional>, <mappers>, etc.=20
And it would finally allow to define a real useful <script> like task
in which we can define real useful <ScriptTasks> that can be used
in multiple places with different parameters.=20

To tell you the truth, the current <script> task is kind of useless in =
my opinion.

Hope my comments dont kill your idea ;-)

Jose Alberto




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