What is Eclipse?

1
What is Eclipse?

• Official Definition
• Eclipse is an open source community whose
  projects are focused on providing an extensible
  development platform and application frameworks
  for building software.
• Eclipse Evolution
• Version 1.0 Open Source Java IDE
• Version 2.0 Universal Tooling Platform
• Version 3.0 Platform for Rich Client Application

2
Eclipse as an IDE

• Language supported
• Java, C/C, C, FORTRAN, Ruby, Python, Ada,
  AspectJyou name it!!
• Agile Method
• Incremental build, Refactoring
• Test Driven Development
• JUnit Test, Automated Testing Framework
• Model Driven Software Development
• Open Architectureware
• Team Concurrent Development support
• CVS, Subversion
• Plus More
• ANT support, Interactive Debugger, Visual Editor

3
(No Transcript)
4
Simple RCP
5
(No Transcript)
6
(No Transcript)
7
(No Transcript)
8
Plug-in Architecture
Extensions
Plug-ins
Application
Plug-in Loader
Extensible Application
Eclipse
9
What is Tango ?

• It is a distributed object oriented control
  system
• It uses CORBA for network communication
• omniORB in C and JacORB in Java
• It supports two languages (C and Java) and 3 OS
  (Linux, Solaris and Windows)
• It is an LGPL licensed software available from
  ESRF web site as
• Source distribution (For UNIX like OS)
• Windows binaries package

10
What is Tango ?

• Every controlled equipment is a device belonging
  to a class and supporting commands (action) and
  attributes (data)
• Tango classes are merged within process called
  device server
• Each device server process has a polling
  mechanism with data cache to speed-up response
  time in case of a slow device.

11
What is Tango ?

• Tango has an API supporting three kinds of
  communication between client and server
• Synchronously
• Asynchronously
• Using event

12
Introduction to Tango polling

• Every Tango device server process has a polling
  thread
• Its rule is to
• Poll attribute and/or command (without input
  parameters)
• Store result in a data cache (called polling
  buffer) managed as a circular buffer
• Detect events and throw them to the CORBA
  notification service

13
Introduction to Tango polling

• Every Tango device server process has a polling
  thread
• Its rule is to
• Poll attribute and/or command (without input
  parameters)
• Store result in a data cache (called polling
  buffer) managed as a circular buffer
• Detect events and throw them to the CORBA
  notification service

14
Introduction to Tango polling

• Each device has its own polling buffer
• Polling buffer depth is tunable
• By device (default is 10)
• By command/attribute for finer tuning
• Client get their data from
• The real device
• The last record in the polling buffer
• The polling buffer and in case of error from the
  real device
• The choice is done by a Tango API client call

15

• Model-Driven Development of Distributed Systems -
  Volter
• ITER