Validating Email Address in Peoplecode

We have a number of pages in PeopleSoft, where user/admin is free to enter email addresses. How to validate if a value entered in a PeopleSoft field is a valid email address?

In general, how does an email id look like? It will have few characters followed by @ symbol followed by few characters and then a .(dot) symbol followed by few more characters. So, we have to validate the presence of these.

For example, if &email_addr is a variable which contains the string entered in email address field and needs to be validated then try the below code:
&AT = Find("@", &email_addr);
&DOT = Find(".", &email_addr);

If ALL(%AT,&DOT) Then
/* Validation Success */
/* Validation Fail*/
/* Issue Error message */

Additionally we could also perform checks to ensure that:
  • the position of @ is not the first character
  • .(dot) is not the last character.
  • @ is not repeated else where in the string
  • Dot is not repeated else where in the string
This can be done by using instr, substr and len functions.

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