Programming coordinated behavior in java

  • Authors:
  • David Harel;Assaf Marron;Gera Weiss

  • Affiliations:
  • Weizmann Institute of Science, Rehovot, Israel;Weizmann Institute of Science, Rehovot, Israel;Ben Gurion University, Beer-Sheva, Israel

  • Venue:
  • ECOOP'10 Proceedings of the 24th European conference on Object-oriented programming
  • Year:
  • 2010

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Abstract

Following the scenario-based approach to programming which centered around live sequence charts (LSCs), we propose a general approach to software development in Java. A program will consist of modules called behavior threads (b-threads), each of which independently describes a scenario that may cross object boundaries. We identify a protocol and a coordination mechanism that allow such behavioral programming. Essentially, runs of programs are sequences of events that result from three kinds of b-thread actions: requesting that events be considered for triggering, waiting for triggered events, and blocking events requested by other b-threads. The coordination mechanism synchronizes and interlaces b-threads execution yielding composite, integrated system behavior. The protocol idioms and the coordination mechanism of b-threads are implemented as a Java library called BPJ. Throughout the exposition we illustrate benefits of the approach and discuss the merits of behavioral programming as a broad, implementation-independent paradigm.