May 2006
Intermediate to advanced
446 pages
12h 41m
English
book
Model-Driven Software Development: Technology, Engineering, Management
by Thomas Stahl, Markus Völter, Jorn Bettin, Arno Haase, Simon Helsen, Krzysztof Czarnecki, Bettina von Stockfleth
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Chapter 17
Case Study: An Enterprise System
17.1 Overview
This chapter serves as an extended example for some of the advanced ideas in MDSD. This includes cascaded MDSD (Section 8.2.8), the integration of MDSD and CBD as explained Section 7.8, as well as the architectural process described in Section 13.4. This chapter is structured along the lines of that architectural process.
The example describes a fairly typical enterprise system that contains various subsystems such as customer management, billing, and catalogs. In addition to managing the data using a database, input forms and the like, we also have to manage the associated long-running business processes.
17.2 Phase 1: Elaboration
17.2.1 Technology-Independent Architecture
We decide that our example system will be built from components. Each component can provide a number of interfaces. It can also use a number of interfaces provided by other components. Communication is synchronous and is also restricted to be local: no remoting is supported on this level. We design components to be stateless.
Data types can either be simple types (string, int, Boolean) or complex. A complex data type is basically like a struct, in that it has named and typed attributes. There are two kinds of complex data types:
- Persistent entities that have a well-defined identity and can thus be searched and have relationships to other entities.
- Data transfer objects that have no identity and are not persistent.
In addition to components we also explicitly ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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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.