Editor Framework and BeanValidation (setConstraintViolations problem).

[Ümit Seren]

I am trying to get the Editor Framework to work with BeanValidation (JSR303) (GWT 2.4) for client side validation and run into an issue.

Validation works fine. I want to use the Editor's built in capability to display errors (i.e ValueBoxEditorDecorator). However the EditorDriver interface only specifies setConstraintViolations(Iterable> violations); But the validate function from the BeanValidation returns a Set> and I can't cast from this to the type that is expected in the setConstraintViolations function.

The only workaround I found is creating a new Set and adding the ConstraintViolations to it.

Set<ConstraintViolation<MyProxy>> violations = validator.validate(myProxy,Default.class);
Set<ConstraintViolation<?>> violations2 = new HashSet<ConstraintViolation<?>>();
for (ConstraintViolation<StudyProxy>constraint:violations) {
    violations2.add(constraint);
}
if (!violations.isEmpty()) {
    driver.setConstraintViolations(violations2);
}
else {
  //proceed
}

I can this is related to this issue: http://code.google.com/p/google-web-toolkit/issues/detail?id=6270

Is there any better way to do that?

[Thomas Broyer]

As suggested in the issue you link to:

@SuppressWarning("unchecked", "rawtypes")

Set<ConstraintViolation<?>> violations2 = (Set<ConstraintViolation<?>>) (Set) violations;

 

[Ümit Seren]

Thanks!. The double cast does the trick

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[Alexandre Harvey-Tremblay]

I am using the same code as you, however my errors are not displayed on the ValueBoxEditorDecorator object. Do you have issues with your errors showing?