Case Study - CATCH 2004

• A simple motivation sample on Modality and Locale
• java.util.Locale
  • a triplet (language, country, variant) e.g. (en, US, WIN) or (en, UK, MAC)
  • a relaxing algorithm implemented by java.util.ResourceBundle.getBundle()
• com.ibm.*.Modality
  • a triplet {modality family, modality name, modality flavor} e.g. GUI/HTML/4.0 or SPEECH/VXML/2.0
  • relaxing supported by isSubtypeOf operation
• Static resources and class factories at variation points are parameterized in two dimensions (Locale, Modality)
• We simplified our task by saying Locale always takes precedence - the Modality dimension imported into the Locale dimension - flattening not always possible.

  <message name="eventType">
    <!-- this is default content (e.g. GUI or GUI/HTML):  -->
    Select the event type:

    <!-- following line is content for all the GUI/WML/* modalities -->
    <alt modality="GUI/WML">Event Type:</alt>

    <!-- any speech modality uses following line -->
    <alt modality="SPEECH">Please say the event type.</alt>
  </message>