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WSO2 Presentation Layer

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WSO2 Trainings

WSO2 Trainings

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Transcript

  • 1. WSO2 Presentation Layer - Nuwan Bandara
  • 2. What is the presentation layer ?● The place where data becomes information● Where all underneath complexities are given a meaning● The place where a first impressions in built
  • 3. What it means to be the presentationlayer of a middleware platform● A lot of data● A lot of data formats● Plenty of apis in various formats
  • 4. JSP & Servlets● Is the common choice is java based platforms● Provides a solid platform to build UIs● Have a rich toolset
  • 5. Carbon UI● In combination provides the UI for the underlying services layer● Modular● Separates the concerns● Plugable
  • 6. Limitations of the currentpresentation platform● The pluggable UI components are in .jar archives● Not flexible for change● Have a strict convention and is limited to the management console UIs
  • 7. Solution & Alternatives● Use a light weight frontend● No deployment hassle● Simply vi in the source● PHP ? Python ? JavaScript ?
  • 8. Advantages of Javascript● One language across the board● Wide developer community adoption● A rich data format● Plenty of rich libraries for front end development
  • 9. Javascript in the server● No mismatches of data back and forth● One language at the client and at the server● Share libraries between the client and the server● Any javascript developer can complete the entire job
  • 10. ● A runtime that process javascript at the server● easy of application development deployment lifecycle● A useful tool set perform basic server side functionalities● An extendable platform
  • 11. How its been built● Based on Mozilla Rhino● Deployed as same as an exploded .war file
  • 12. Hello World in Jaggery /helloworld.jag <% print(Hello World); %>
  • 13. Additional Helpers● Log● Require● <%= %>● get/post/put/del● Include● File● Database● etc
  • 14. JSON/person.json{ "person":{ "name":"nuwan", "tg":"development" }}
  • 15. How JSON makes it all easy/data.jag<%var person = {"name":"nuwan", "company":"wso2"};print(person);%>/display.html<script>$.get(data.jag, function(data) { alert(The name is : + data.name);});</script>
  • 16. Jaggery and APIs● Content negociation ○ Can send the page or the data based on the requested content type● Natively support JSON (whos writing XML based apis anymore ;) )● For this reason these APIs are inherently mobile friendly● No extra effort to write the API and then the application
  • 17. Jaggery Editor● For now only support IntelliJ Idea● Full fledge web based IDE - Coming Soon with UES● Developer Studio Based IDE - Coming Soon
  • 18. Jaggery Debugger
  • 19. Questions ?Answers are at - http://jaggeryjs.org/documentation.jag :)