[Springframework-rcp-dev] Binding Errors

[Jan H. <jh...@sc...>]

Hi all,

While looking at issue RCP-308 and rereading the associated forum thread,
I get the feeling that we need a BindingException. I'll shortly sketch the
problem and my idea.

When any exception occurs while setting a value, the exception is caught
in DefaultFormModel.ValidatingFormValueModel.setValueSilently(). Hereafter
a binding error is raised, the exception logged as debug and that's it.
This can be a perfect use-case for some, but it also covers up exceptions
that may come from any listener attached to that valuemodel (or wrapped
model). The latter should definitely not be handled as a binding error.

The issue states that the log level should be at least at the warning
level, which stands out more when developing. This is correct but I think
we do need more precise handling of errors. We could create a
BindingException that any PropertyAccessStrategy can throw and catch only
this exception to raise as a binding error (and log it as warning). All
others should be passed upwards. So I'm thinking of adding a
BindingException and using this in the
BeanPropertyAccessStrategy.setValue(Object) to wrap any exceptions
concerning the binding to the backing bean.

What do you think?

Kind Regards,
Jan



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