RegexValidator.java

package be.selckin.swu.validation;

import org.apache.wicket.validation.IValidatable;
import org.apache.wicket.validation.IValidator;
import org.apache.wicket.validation.ValidationError;

import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;

public class RegexValidator implements IValidator<String> {
    @Override
    public void validate(IValidatable<String> validatable) {
        try {
            Pattern.compile(validatable.getValue());
        } catch (PatternSyntaxException ex) {
            ValidationError error = new ValidationError();
            error.setMessage(ex.getMessage());
            validatable.error(error);
        }
    }
}