May 2001
Intermediate to advanced
1088 pages
30h 13m
English
Content preview from Special Edition Using Java™ 2 Enterprise Edition
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Factories
One of the things that is conspicuously absent from IDL is a constructor declaration (other than the factory init method for value types). With CORBA, you usually create a special object called a factory that creates object instances. You register the factory with the naming service, and clients only need to perform a naming lookup on the factory. After a client has located a factory, it can invoke methods to create the actual objects.
Figure 17.2 shows the relationship between a factory, a client, and the object the factory creates.
Figure 17.2. The client uses the factory to create specific objects.
Listing 17.10 shows an IDL file ...
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