Java CA Server (JCAS)

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Java CA Server (JCAS)
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What is JCAS?

• JCAS is pure Java CA Server implementation
• Plugs into the JCA just like pure Java CA Client
  library
• JCA support for server IFs from v2.2.0 (Oct 2006)
• JCAS is only CA server side implementation
• Pure CA implementation (i.e. no EPICS DB
  types/records dependencies), it talks CA DBRs
• You can expose any value from non-EPICS to the
  EPICS world

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Design and implementation

• Based on well proven CAJ design
• Used most efficient network concurrency design
  patterns (Leader/Followers ThreadPool)
• Comprehensive testing
• Done through entire development process
• CAJ extensive tests were also used to test JCAS
• C server used to test CAJ was transparently
  replaced with JCAS
• Clean and simple API
• Allows fast and efficient server implementations
• Still allows advanced and more complex
  implementations if needed (e.g. dynamic ACL)

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For programmers
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Status

• Fully functional and complete implementation
• Funded by Gemini (but only 50)
• Passed their acceptance test (including docs!)
• Happy to have it and do not have any problems
• Very useful (and crucial) EPICS Java library
• Martys Java IOC w/o CAS is practically useless
• Rapid integration of any Java values into EPICS
• Co-funders for other 50 needed

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Thank you!