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The Interactions Between Hosting and Hosted Applications

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  1. The Interactions Between Hosting and Hosted Applications WG23 Notes Gathered by Dongbai Guo

  2. Interactions Between Hosting and Hosted Applications • Requirement of a hosted application • Functionality description a hosted application • Data exchange between hosting and hosted application • Manage and control a hosted application • Authentication and security • Hosted application, implementation characterization • Hosted application, documentation

  3. Hosted Application:Requirement Specification • A machine/human readable profile of a hosted application • Hardware • Software • Library • Operating system • Applications • License

  4. Hosted Application:Functionality Profile • What the hosted application can do • Function profile • Input – SOP UIDs • Output – Object definition • Operation – behavior specification • Error – signaling and handling

  5. Hosted and Hosting Application:Data/Message Exchange • Programming API • Programming language neutral interface definition • XML • DICOM object • CORBA/IDL • Communication protocol • File • Streaming • HTTP/WebDAV/… • DICOM

  6. Manage and Control a Hosted Application • Life cycle management • Installation/upgrade/downgrade/patch • Process control and signaling • Start/stop/pause/kill/termination/commit • Interface control (user interaction) • Input: mouse, voice • Output: display, printer • Error and exception handling

  7. Security and Privacy • Authentication • Application/User • Authorization • System resources (hardware and software) privilege grant and revoke • Information right and privacy • Auditing/logging

  8. Implementation Characterization • Implementation version and ownership • Benchmark • Certification • Standard/regulation conformance

  9. Documentation • Help • User guide • Error/exception guide • Internationalization

  10. Questions I Have • The level of data sharing between hosting and hosted application • (Web) Application/process/thread • Complex workflow transaction involving multiple hosted applications? • Privilege difference between hosting application and hosted application • What is the use case we are targeting?

  11. Application Level Interface Standard • CORBA • Microsoft (D)COM

  12. Solutions • Java/.NET • Dev toolkits • Platform + Interpreted languages • Shared libraries • Grid/Distributed applications

  13. Java Applications • IBM Websphere • BEA WebLogic

  14. Compile Libraries Development Toolkit • Vendor or author of the library defines interface • Developer download libraries and build applications on top of the libraries

  15. Interpreted Languages • IDL (Interactive Data Language) • Matlab

  16. Shared Libraries • Dynamically loaded • Shared the same process space

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