[hibernate-dev] Fail fast feature for Hibernate Validator

[Emmanuel Bernard]

That or slowish validations.

One typical use case is that:

if ( validator.validate(customer, StraightToValidationScreen.class).size() >0 ) {
  //manual process
}
else {
  //automatic process
}

BTW, I've committed a non scientific perf test that shows an average of 5x perf improvement on an object graph of 5 object (one master and 4 children) and 4 constraints on A and 3 on B. Around 22ms vs 120 ms. (log4j logs set to ERROR). The perf change is visible even on smallish graphs.

It can be worthwhile. 

On 4 oct. 2010, at 16:20, Hardy Ferentschik wrote:

> What would be the usecase? Saving time in large object graphs where I am only interested in whether there is a
> failure at all? You really need LARGE object graphs to make this worth while.
> 
> 
> On Mon, 04 Oct 2010 15:45:34 +0200, Emmanuel Bernard <emmanuel at hibernate.org> wrote:
> 
>> http://github.com/emmanuelbernard/hibernate-validator/commits/failFast
>> 
>> What do you guys think?
>> 
>> The idea is to stop a the first failure.
>> You can enable that :
>> - by property
>> - at config time
>> - when the Validator is created
>> 
>> Look at
>> http://github.com/emmanuelbernard/hibernate-validator/blob/failFast/hibernate-validator/src/test/java/org/hibernate/validator/test/engine/failFast/FailFastTest.java
>> for code examples.
>> 
>> Emmanuel
>> 
>