Basic HTML version of Foils prepared July 6 99

Foil 72 Gateway Implementation

From Tutorial on Java for Middle tier in Computing Portals Tutorials at ACM Java Grande Meeting -- June 14 99. by Tom Haupt


1 Distributed, object-oriented middle tier
  • CORBA objects (Gateway Containers, Gateway Modules and Gateway Services) implemented in Java. [Scalable, extensible, low-maintenance middle tier]
  • Containers define the user environment.
  • Modules and Services serve as proxies: they accept the user requests (Front End) and delegate them to the Back End. [Support for distributed, heterogeneous back-end services managed independently from Gateway]
  • Note: modules can be implemented in C++; also can be DCOM components

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