公开(公告)号：CA2162188A1

公开(公告)日：1997-05-07

申请号：CA2162188

申请日：1995-11-06

Applicant: IBM CANADA

Inventor： GARTNER HAROLD JEFFREY ,  KLICNIK VLADIMIR ,  STARKEY MICHAEL ,  STEPHENSON JOHN WRIGHT

IPC: G06F15/16 ,  G06F9/44 ,  G06F9/46 ,  G06F13/00 ,  G06F13/14

Abstract: A framework having a plurality of directories representing different types of middlewares and distributed object systems can be constructed from data provided in a class library. Each directory includes the name and address of all service objects, located across multiple servers in the system, that supports the specific middleware or distributed object policy characteristics for that directory. One service object may be addressed through multiple directories. When a remote method call is issued by a client, a list of service objects capable of executing the call is obtained from the directories and one object selected. The policy characteristics associated with the directory from which the object address is selected, are attached to the call. These characteristics are validated when the addressed server receives the call. In this way, a client program can be written entirely independently of the middleware or peculiarity of implementation of the distributed object service.