By Thomas Erl
As XML turns into an more and more major a part of the IT mainstream, professional information and commonsense thoughts are required to prevent the various pitfalls of utilizing XML incorrectly or permitting it for use in an out of control demeanour. This e-book acts as an information base for matters in terms of integration, and offers transparent, concise recommendation on the best way to top ensure the style and path XML know-how will be located and built-in. The e-book may be one of many first to supply documentation for second-generation net providers applied sciences (also referred to as WS-*). the significance of those requirements (which contain BPEL, WS-Transaction, WS-Coordination, WS-Security, WS-Policy, and WS-Reliable Messaging) can't be understated. significant criteria organisations and proprietors are assisting and constructing those criteria. ***David Keogh, application supervisor for company Frameworks and instruments, Microsoft, will offer a entrance hide citation for the booklet.
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Additional resources for A Field Guide To Integrating Xml And Web Services
3 Gaining functionality with EJB services The first thing that should cross your mind while evaluating any technology is what it really gives you. What’s so special about EJB? Beyond a presentation-layer technology like JSP, JSF, or Struts, couldn’t you create your web application using just the Java language and maybe some APIs like JDBC for database access? The plain answer is that you could—if deadlines and cutthroat competition were not realities. Indeed, before anyone dreamed up EJB this is exactly what people did.
Neither is it necessary to cover every service EJB offers right now. 1 and explain what they mean to you from a practical perspective. 1 in your application. Despite its robust features, one of the biggest beefs people had with EJB 2 was that it was too complex. It was clear that EJB 3 had to make development as simple as possible instead of just continuing to add additional features or services. If you have worked with EJB 2 or have simply heard or read that it is complex, you should be curious as to what makes EJB 3 different.
This is a remarkably positive step in expanding the scope of EJB 3 outside the traditional realm of server applications. Better persistence-tier OO support Because EJB 2 entity beans were record oriented, they didn’t support rich OO features like inheritance and polymorphism, and they didn’t permit the mixing of persistent state and domain logic. 3, this made it impossible to model the domain layer in DDD architecture. EJB 3 entities have robust OO support, not just because they are POJOs but also because the JPA ORM mapping scheme is designed with OO in mind.
A Field Guide To Integrating Xml And Web Services by Thomas Erl