The Interactions Between Hosting and Hosted Applications

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 ApplicationRequirement Specification

• A machine/human readable profile of a hosted
  application
• Hardware
• Software
• Library
• Operating system
• Applications
• License

4
Hosted ApplicationFunctionality 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 ApplicationData/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