List of OCL Methods
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      .prologAttribute()

      Description of the method
      Description:

      .prologAttribute() returns raw prolog attribute information e.g. version="1.0" encoding="UTF-8"

      .prologAttribute("encoding") returns the prolog attribute value for encoding e.g. UTF-8
      Available for:

      any
      Parameters: attribute name 
      Return type: string

       

      Example 1

      Context: Message
      OCL: self.prologAttribute("encoding").matches("UTF-8")
      Description: The example rule checks if encoding has value "UTF-8".                                                     

       

      The XML snippet below would pass this check.

      <?xml version="1.0" encoding="UTF-8"?>

      The other snippet below however would not pass this check as the value is different from "UTF-8".

      <?xml version="1.0" encoding="ASCII"?>

       

      Example 2

      Context: Message
      OCL: not(self.prologAttribute().matches('.*[\"].*'))
      Description: The example rule checks that the prolog does not contain any double quotation marks.

       

      The XML snippet below would pass this check.

      <?xml version='1.0' encoding='UTF-8'?>

      The other snippet below however would not pass this check as the double quotation marks are used for the prolog values.

      <?xml version="1.0" encoding="UTF-8"?>