private final Pattern emailPattern = EmailAddressValidator.getInstance().getPattern();
@Override
public void validate(IValidatable<PersonPojo> validatable) {
PersonPojo person = validatable.getValue();
Matcher matcher = emailPattern.matcher(person.getEmail());
if (!matcher.matches()) {
validatable.error(new RestValidationError(Arrays.asList(INVALID_MAIL_KEY),
Collections.EMPTY_MAP, "email"));
}