> What would make more sense to me, if there is really just one function with a
> certain name, is:
> 
> FilterFactory.functionName(String functionName)
> 
> it's all you need to locate the function. That would require the caller to 
> verify
> that the available arguments match the function arguments size, which, with
> Function returning FunctionName, is feasible. Or not?
That is just it; we are not performing a look up here; but instead creating an 
object.

This is just confusing because what should be called FunctionType is called 
FunctionName.

We have need of creating a FunctionName data structure, even if we don't have 
an implementation for it, when we are creating a FilterCapabilities describing 
functions available in a remote WFS.

FilterFactory is responsible for both creating Filters; and for creating these 
FunctionName descriptions. The issue I am having is that the method does not 
allow me to fully define the FunctionName description.

Jody 
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