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Dynamic Context Generation

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Transcript

  • 1. Dynamic context generation 老師:張耀仁 學生:徐欣佑
  • 2. Introduction
    • The mobile terminal characteristics
      • Text and image display
      • Color video
    • Java Database Connectivity (JDBC)
    • Document Object Model (DOM)
  • 3. Dynamic context generation User information interests and preferences Content database Location and environment prarameters Step1 Conversion to intermediate format Device characteristics and browser types Step 2 Conversion for display (to XHTML,WML,..) XSLT style sheets Device display Intermediate data format (DOM tree)
  • 4. DOM tree generation
    • A platform and language-neutral interface
    • Represent and dynamically access and update the context
  • 5. Style sheets for output formatting
    • Extensible Style Sheet Language Transformations (XSLT)
    • Transform the DOM content representation into appropriate markup
    • Decides what information to display on the user’s mobile terminal
  • 6. Style sheets for output formatting (continued)
    • Can be substituted for another in order to present the material in different way
    • Cascading style sheets (CSS)
      • Used for display purposes
  • 7. Separate DOM content and XSLT presentation generation rules DOM tree XSLT Style sheet MarkUP: WML, XHTML,… XSLT processor
  • 8. Separate markup and css presentation directives Markup: WML. XHTML,… CSS Style sheet Displayed content Mobile terminal browser

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