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Widget SOA


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Presentation to the CISTI New Ideas Forum (Jan 12, 2006) describing the potential benefits of SOA with regard to integration with client tools/applications on the desktop or in the browser.

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Widget SOA

  1. 1. Service Oriented Desktop Use of SOA-based web services in alternate client interfaces. New Ideas Forum Stephen Anthony, January 12, 2006
  2. 2. Overview <ul><li>Service Oriented Architecture (SOA) </li></ul><ul><li>Web Services </li></ul><ul><li>Desktop Space </li></ul><ul><li>Examples/Demo </li></ul><ul><li>Discussion </li></ul>
  3. 3. Service Oriented Architecture <ul><li>A different way of thinking about technology – a style of planning and implementing enterprise systems. </li></ul><ul><li>Simply: Think about the business services to provide in conjunction with the applications, systems, components, client interfaces. </li></ul><ul><li>Lends to designing systems around business services instead of monolithic products/applications/systems. </li></ul>
  4. 4. Service/SOA Definition <ul><li>“ A service is a function that is well-defined, self-contained, and does not depend on the context or state of other services.” </li></ul><ul><li>“ A service-oriented architecture is essentially a collection of services. These services communicate with each other. The communication can involve either simple data passing or it could involve two or more services coordinating some activity.“ </li></ul><ul><li> soa _definition.html </li></ul>
  5. 5. Web Services <ul><li>“ The technology of Web Services is the most likely connection technology of service-oriented architectures. “ </li></ul><ul><ul><li>-- </li></ul></ul><ul><li>“ Web Services refers to the technologies that allow for making connections. Services are what you connect together using Web Services. ” </li></ul><ul><ul><ul><li>-- </li></ul></ul></ul>
  6. 6. Why Services? <ul><li>Build once – use many. </li></ul><ul><li>De facto standard means for machine-machine business communication. </li></ul><ul><li>Facilitates many good practices (e.g: Loose coupling, well-defined interfaces, information hiding…) </li></ul><ul><li>Because of some of these best practices, they provide opportunities for reuse, often beyond the original concept and design . </li></ul>
  7. 7. SOA plans <ul><li>CSI is the initiative to build a set of outward-facing web services, in the SOA context, to provide library services. </li></ul><ul><li>Examples of potential CISTI services include: </li></ul><ul><ul><li>Get document </li></ul></ul><ul><ul><li>Order document </li></ul></ul><ul><ul><li>Retrieve alert </li></ul></ul><ul><ul><li>Determine Holdings </li></ul></ul><ul><ul><li>Search Metadata (title/article) </li></ul></ul><ul><ul><li>Request loan status </li></ul></ul><ul><ul><li>Request order status </li></ul></ul><ul><ul><li>Deposit data….. </li></ul></ul>
  8. 8. OK, so what’s the idea? <ul><li>Web services will provide a means to reach the client at a different level than was previously feasible. </li></ul><ul><li>The “desktop space” has become the new battleground. </li></ul><ul><li>We can achieve different and deeper levels of integration than was previously reasonable. </li></ul><ul><li>Desktops, client applications, research/learning tool integration </li></ul><ul><li>Deeper integration into the clients space. </li></ul><ul><li>http:// digicmb . blogspot .com/2006/01/library-search-gadgets-into-users.html </li></ul>
  9. 9. CISTI Widget Demo <ul><li>CISTI Widget 0.1 </li></ul><ul><li>CISTI Widget 0.2 (“Web Services” enabled version). </li></ul><ul><li>Technologies: </li></ul><ul><ul><li>Konfabulator/Yahoo Widget </li></ul></ul><ul><ul><ul><li>Lot’s of JavaScript </li></ul></ul></ul><ul><ul><li>Shrew 0.1 </li></ul></ul><ul><ul><li>Innopac </li></ul></ul><ul><ul><li>Innovative XML Server (… well, should be), along with Shrew 0.2 (XSLT transform). </li></ul></ul>
  10. 10. Imagine <ul><li>A good suite of CISTI/Library web services. </li></ul><ul><li>A completed Widget/Gadget/Extensions capable of: </li></ul><ul><ul><li>Alerting users when a document is available/delivered. </li></ul></ul><ul><ul><li>Alerting users when information of interest arrives (alerts: citation, keyword, author). </li></ul></ul><ul><ul><li>Searching title/articles. </li></ul></ul><ul><ul><li>Integrating with office suites/research tools for paper writing. </li></ul></ul>
  11. 11. In reality <ul><li>Widgets are one example of the power of services: </li></ul><ul><ul><li>novel channel to provide services. </li></ul></ul><ul><ul><li>demonstration of potential for different kinds of client interaction. </li></ul></ul><ul><ul><li>demonstration of the flexibility of a web service enabled library. </li></ul></ul><ul><ul><li>May be useful in specific “dashboard” scenarios, particularly for marketing/usage/finance stats. </li></ul></ul><ul><li>We are getting lighter-weight standards based ways of getting at information. </li></ul><ul><li>The return of push. </li></ul><ul><li>Bi-directional. </li></ul><ul><li>Lightweight, realitively easy ways to get at (changing) information, as compared with full-fledged apps, or the traditional web. </li></ul>
  12. 12. Similar client-side technologies <ul><li>Yahoo Widgets </li></ul><ul><ul><li> </li></ul></ul><ul><li>Google Sidebar Plugins </li></ul><ul><ul><li> </li></ul></ul><ul><li>Microsoft Gadgets </li></ul><ul><ul><li> </li></ul></ul><ul><li>Firefox Extensions </li></ul><ul><ul><li> </li></ul></ul><ul><li>(Also DesktopX, AveDesk, Samurize, Kapsules) </li></ul><ul><li>General: </li></ul>
  13. 13. Resources <ul><li>SOA Resources: </li></ul><ul><li>Web Service Resources: </li></ul><ul><li>The “Desktop Space”: </li></ul><ul><ul><li>Library focused: </li></ul></ul><ul><ul><li>“ Widget Wars” </li></ul></ul><ul><ul><li>“ The Widget/Gadget Battle” </li></ul></ul><ul><li>Some local examples: http://lab. cisti - icist . nrc . gc .ca/ </li></ul>
  14. 14. Questions/Discussion