August 2018
Intermediate to advanced
314 pages
8h 9m
English
Content preview from Java EE 8 Design Patterns and Best Practices
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The classic Business Delegate pattern scenario
In a classic Business Delegate pattern scenario, the implementation of the Business Delegate pattern receives a request from a Java client and sends the response back to it. In addition, to minimize the coupling between the presentation tier and the business tier, it was the responsibility of a delegate to locate remote services (in most cases, a remote EJB service) and provide a caching mechanism for accessing business services to reduce the network traffic.
So, when EJB was used as a remote service in the past, Business Delegate patterns were used with another pattern, the Service Locator Pattern, which is responsible for locating the remote (and local) EJB. Also, the stub (a kind of EJB reference ...
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