>
> The reason is that you aren't really creating a new implementation of the 
> logic, so i feel that having to create a class to set a property is a bit 
> redundant/ridiculous.
>

Yeah maybe my example is a bit off. I think in reality I would have created 
a configuration interface that has getters for each config value and then 
provide different implementations of that configuration interface. Then I 
would pass in that configuration to the real class that contains the logic. 
IMHO that feels a lot better to me since you don't end up with empty sub 
classes only to call a super constructor with different parameters. It is 
also a lot more descriptive.

For such configuration classes, writing a generator is really easy. GWT 
actually has a generator that kind of does what you want. Take a look at 
UserAgentGenerator which generates an implementation of UserAgent. The 
generator code that produces UserAgent.getCompileTimeValue() is exactly 
what you need to generate a configuration class that simply returns compile 
time XML property values.

-- J.

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