[Springframework-developer] Multiple Validators per Handler?

[<se...@eh...>]

Hello,

Much along the lines of multiple View Resolvers, I'd like to ask the developers
if they believe allowing multiple Validators per Handler is a good idea.  I've
run into this situation a few times, and it seems like a good idea.

With the addition of new validators that automatically determine the validation
rules (commons-validator, for example), there aren't any explicit validator
objects written.  A handler currently takes one validator.  I often need to
code some specific, hard to specify via attributes validation rules that go
above and beyond what simple declarative validation rules can specify.  I'd
like the specific validation rules to run along with the commons-validator
derived rules.

The solution for multiple View Resolvers was to look into the ApplicationContext
and find all View Resolvers.  There was no explicit ViewResolverChain object.

With Handlers, the API has a setValidator.  Not wanting to break the API, a
suggestion would be to add a setValidators(List validators) method to Handler. 
This would avoid creating a ValidatorChain object and would keep in the spirit
of the View Resolvers solution.

Any ideas on this?  I would be more than happy to provide the patch for this. 
Of course, if people think the best way to solve this is to create some sort of
Validator Chain object and leave the API for Handler alone, I would create the
patch for that as well.

Your feedback is much appreciated.  I look forward to helping out!

Thanks,
Seth




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