Custom-Complex validation

[Jurijus Jarmakas]

How to handle situation if validation requires complex data processing. Is there a way to push an error into dialog message/error area "manually"?

[oliverhutchison]

Jurijus,
we may be able to help you better if you could you let us know what exactly are you trying to do? What's unsatisfactory about using Constraints?

Ollie

[Jurijus Jarmakas]

I am updating a record, one of the updatable values is part of the index (combobox), I have to make sure that the user does not select the value which would cause duplicate index. I have to loop through all the records to see that there is no duplicate, and this validation should occur upon button click.

[oliverhutchison]

I'm not sure I follow what you're describing. Couldn't you just provide a PropertyConstraint that checks for "duplicate index"?

Could you provide a bit of code to illustrate the case some more.

[Jurijus Jarmakas]

so, I will create my own constraint like

public class MyCustomConstraint extends TypeResolvableConstraint {
public MyCustomConstraint() {
super("customConstraint");
}

public boolean test(Object argument) {
// implementation of constraint
}
}

and the "test" method will have my data validation logic?

[oliverhutchison]

Exactly. ;-)