Download PDF by Rockford Lhotka: Expert C# 2005 Business Objects, Second Edition

By Rockford Lhotka

ISBN-10: 1590596323

ISBN-13: 9781590596326

I have tracked CSLA and used the structure because the Early VB6 days and that i regrettably need to admit that i've got moved from being a follower to becomming more and more dissapointed through the years. CSLA has in my view simply didn't stay alongside of the more moderen techniques of area Modelling and so forth from Eric Evans it has additionally didn't in incorporating options and styles from Martin Fowler et al. The structure doesn't remedy or current any actual answer for the article Relational mapping matters and so forth and so forth and so on. the matter in my opininion stem from the truth that the structure has remained rooted within the ideas that labored and have been wanted in VB6. when you and your organization are already devoted to CSLA then continue deciding to buy the publication and stay alongside of the minor adjustments that take place to the structure with every one new release. the second one challenge for me is that the CSLA isn't really attempt pushed (although there are a few checks that seem to were retrofitted). The Framework itself within reason restricted with lots of the common sense being within the generated code. which means this can be very tricky to increase or increase because you have to begin twiddling with templates and so on. we know that generated code is particularly tough to check so doing this makes issues very fragile and challenging. while you are taking a look examine area options and to utilise those in creation initiatives then i might recommend that you just opt for one of many Open resource company software Frameworks which are on hand. those are extra function wealthy and extra alive when it comes to contribution than CSLA. My feedback will be 1)NHibernate - this can be an open resource ORM yet has many turbines e.g. CodeSmith that let you generate the enterprise item Layer. it really is quite good documented and has a ebook (NHibernate in motion) it has a fairly energetic neighborhood. i've got used this framework on a few initiatives and it's very advanced yet works good. 2) My different recommendation will be Habanero - this is often an enticing Open resource firm program framework (that i've been utilizing for the final 7 months). The framework covers the ORM (Object Relational Mapping), The area version and a few new release of straightforward consumer interfaces. It additionally has many parts that may be used and plugged in at either the area version (Business good judgment Layer) and person interface (Presentation layer). The documentation is beautiful reliable with plenty of movies and so forth for purchasing all started. there's at present now not that a lot on hand at the information of the structure however the code is easily documented. there's a alpha liberate of a ebook that's beautiful reliable and explains the main points of structure (You have to request it through email). The remarkable elements for me are that the whole structure is absolutely try pushed and ships having the ability to switch in a reminiscence Database. The In reminiscence database relatively helps you to increase your undertaking in an agile demeanour. The neighborhood and discussion board is energetic and the Framework has already had a number of new releases within the 7 months i've been operating with it. The framework ships with a unfastened Code Generator aka Firestarter. Firestarter is a section tough and prepared yet works and is comparatively effortless to exploit.

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Extra resources for Expert C# 2005 Business Objects, Second Edition

Example text

This is illustrated in Figure 1-14. Figure 1-14. A business object composed of state, implementation, and interface The hiding of the data and the implementation code behind the interface are keys to the successful creation of a business object. If the users of an object are allowed to “see inside” it, they will be tempted to cheat, and to interact with the logic or data in unpredictable ways. This danger is the reason why it will be important to take care when using the public keyword as you build your classes.

NET automatically detects that the object doesn’t need to be copied or moved, and thus takes no extra action. The Business Logic layer becomes portable, flexible, and mobile, and adapts to the physical environment in which you deploy the application. Due to this, you’re able to support a variety of physical n-tier architectures with one code base, whereby your business objects contain no extra code to support the various possible deployment scenarios. What little code you need to implement to support the movement of your objects from machine to machine will be encapsulated in a framework, leaving the business developer to focus purely on the development of business logic.

When part of your application is deployed outside your own network, that certainly crosses at least a security (trust) boundary. In a client/server model, this would be viewed as a minimum of two tiers, since the client workstation is physically separate from any machines running behind the firewall. But really, SO offers a better way to look at the problem: there are two totally separate applications. The client runs one application, and another application runs on your server. These two applications communicate with each other through clearly defined messages, and neither application is privy to the internal implementation of the other.

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Expert C# 2005 Business Objects, Second Edition by Rockford Lhotka

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