Core J2EE Patterns: Best Practices and Design Strategies
Over the last few years, Java 2 Platform, Enterprise Edition (J2EE) technology has emerged and matured as a standard platform for building enterprise applications. While the platform has matured into a solid offering for developing and deploying enterprise applications, it does offer its challenges. As developers, often we confuse learning the technology with learning to design with the technology. In this book, senior architects from the Sun Java Center, Sun's Java consulting organization share with the reader their cumulative design experience with and expertise on J2EE technology.
The primary focus of the book is on patterns, best practices, design strategies, and proven solutions using the key J2EE technologies including JavaServer Pages (JSP), Servlets, Enterprise Java Beans (EJB), and Java Message Service (J.M.S) API. Other ancillary technologies like JDBC and JNDI are also discussed as relevant to their usage in these patterns. The J2EE Patterns catalog with 16 patterns and numerous strategies is presented to document and promote best practices for these technologies.
In addition to the patterns and strategies, the book offers the following:
Core J2EE Patterns delivers:
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The ServiceActivator can be implemented as a standalone service. Clients act as
the message generator, generating events based on their activity. Any client that
needs to asynchronously invoke a business service, such as an enterprise ...
An alternative is to implement the ServiceActivator as a service of the application
server. This may make it easier to manage the ServiceActivator, because it uses
the application server features to monitor the ServiceActivator state and to start, ...
This Service Activator pattern may access a Session Façade as the primary
business object to invoke business service methods in the Session Façade
asynchronously on behalf of the client. • Business Delegate The Service Activator
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J2EE Platform Overview
Presentation Tier Design Considerations and Bad Practices 34
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