December 2013
Beginner to intermediate
446 pages
9h 9m
English
Content preview from Enterprise Application Development with Ext JS and Spring
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Building the service layer
The service layer classes and interfaces will follow the same naming conventions of our DAO layer, where Service simply replaces the Dao equivalent name:
Our first definition will be for the Result class.
The Result Data Transfer Object
The service layer will communicate with the request handling tier through interfaces that return Result Data Transfer Objects (DTO). The DTO design pattern is commonly used in enterprise application programming to transfer data between different layers or subsystems. Our Result DTO will have the following three properties:
boolean success: This property is used if the action was successful ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.