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Former Member

Validate serial patterns

Hi all!

I have this issue..

I have to validate serial patters if each character is Alphanumeric and numeric, for example:





Format5 > NNNNNNNN


Taking as a example for the first one "AAAANNAAANAA" if I receive the value "ABCD12EFG3HI" should be ok

BUT! if I receive "ABCDQ2EFG3HI" (the number 1 changed for a "Q" it shout send an error

I was cheking the regex [:digit:][:alnum:] but I was not success.

Can you help me please?

Best Regards

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2 Answers

  • Best Answer
    Posted on Feb 08, 2012 at 04:18 PM

    I am sure there would be more elegant way, but you can try like this:

    DATA: lv_pattern TYPE char20.
    DATA: lv_value TYPE char20.
    lv_pattern = 'AAAANNAAANAA'.
    lv_value   = 'ABCD12EFG3HI'.
    DATA: lv_len TYPE i.
    lv_len = STRLEN( lv_pattern ).
    DATA: lv_char TYPE char1.
    DATA: lv_val_char TYPE char1.
    DATA: lv_index TYPE i.
    DATA: mlen TYPE i.
    DATA: lv_regex TYPE string.
    DATA: lv_failed TYPE flag.
    DO lv_len TIMES.
      lv_char = lv_pattern+lv_index(1).
      lv_val_char = lv_value+lv_index(1).
      IF lv_char = 'A'.
        lv_regex = '[a-zA-Z]'.
      ELSEIF lv_char = 'N'.
        lv_regex = '[0-9]'.
      lv_index = lv_index + 1.
      FIND REGEX lv_regex IN lv_val_char
       MATCH LENGTH mlen.
      IF sy-subrc NE 0.
        WRITE: 'Error at position', lv_index,
               'expecting', lv_regex, 'but found otherwise'.
        lv_failed = 'X'.
    IF lv_failed IS INITIAL.
      WRITE: 'Looks good'.


    Naimesh Patel

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  • Posted on Feb 08, 2012 at 05:49 AM

    You say that the incoming serial no must be validated with all the patterns available ?

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    • Former Member

      Yep, it must to be validated, for example, if I receive this serial: ABCD12EFG3HI I have to validate that the first four positions are alphanumeric, the sixth and seventh are numeric eighth ninth and tenth alphanumeric, and so on, based on this pattern "AAAANNAAANAA"

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