Hibernate validation @Pattern

Question

I am using org.hibernate.validator.Pattern annotation in my jsf managed bean to validate an <h:inputText> component.

@Pattern(regex="\\W+")
public String getText() {
  return text;
}

My question is, is there a way to get the regular expression from a method or EL withought hard-coding it.
For an example

@Pattern(regex = getRexEx())

OR

@Pattern(regex = "#{bean.regEx}")

I googled and found that the regEx should be a constant. However there can be a alternative way to accomplish this.

Why do need this do you want to change it at run time? And I agree with the below answer. — MohanaRao SV
– MohanaRao SV, Commented Dec 1, 2012 at 12:44
Sure, I also think that the below answer is correct, logical and descriptive. But I am still waiting to find whether there is any other approach.:) — prageeth
– prageeth, Commented Dec 1, 2012 at 12:47
See also stackoverflow.com/questions/8994864/… for define constraints at runtime. — Grigory Kislin
– Grigory Kislin, Commented Mar 26, 2015 at 22:32

Perception · Accepted Answer · 2012-12-12 23:07:30Z

4

The arguments to an annotation need to be compile time constants, so no, it's not possible to specify a run time expression as the argument for @Pattern. It's also not possible to pass an EL expression as argument and have it do anything because, well, that's simply not how the pattern validator was written.

What you can do however, is define your own a validator class that takes a form of an EL expression and validates the bean property against it. Good luck with the context management for that though! Not a simple task.

edited Dec 12, 2012 at 23:07

answered Dec 1, 2012 at 3:07

Perception

80.8k19 gold badges190 silver badges197 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

prageeth Over a year ago

Thanks for your valuable answer. It seems your suggestion is the only solution for that. But you know I am not going to test it. :)

Collectives™ on Stack Overflow

Hibernate validation @Pattern

1 Answer 1

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related