List of OCL Methods
      Back to home
      1. Knowledgebase
      2. Studio Guide
      3. List of OCL Methods

      .charAt()

      Description of the method

      Description: This method returns the character located at the String's specified index. The string indexes start from zero.
      Available for: string
      Parameters: int
      Return type: char

      Example

      Context: TransactionType1
      OCL: self.Id.charAt(1) = "A"
      Description: Example rule expects the position 1 (the second character in string) to contain "A".

      The XML snippets below would pass this check.

      <Id>aAa</Id>

      <Id>a</Id>

      It is worth noting that when the character does not exist in the defined position, expression is not ran.

      The other snippet below however would not pass this check.

      <Id>AaA</Id>