Procedure using regular expression

Question

How to write a procedure using regular expression where i pass a string as input
The procedure should check whether it is a valid email address or not
Please help me

Answer 1

Hello,
perhaps you don't need to code it, because it's already there.
When you use the database to send your mails it or the appropriate package throws the exception
ORA-29279: Permanenter SMTP-Fehler: 501 5.5.4 Invalid Address
When you just need a procedure to check it you can write a wrapper for a java function.
import javax.mail.internet.*;
import oracle.sql.NUMBER;
public class mail_utility {
  public static NUMBER validate_address(String rfc822Address) {
    int rc = 0;
    try {
      InternetAddress ia = new InternetAddress(rfc822Address);
      rc = 1;
    } catch (AddressException ae) {
      rc = 0;
    } catch (Exception e) {
      rc = -1;
    } finally {
      return new NUMBER(rc);
CREATE OR REPLACE  FUNCTION VALIDATE_ADDRESS (p_address in varchar2)
return number
as language java name
  'mail_utility.validate_address(java.lang.String) return oracle.sql.NUMBER';I think i've got it from the forum but i don't remember from whom.
Bernd