Core J2EE Patterns: Best Practices and Design Strategies
Prentice Hall PTR, 2001 - 459 ページ
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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When the container invokes the entity bean's ejbLoad( ) method, either for the
initial load or for reloads to synchronize with the persistent store, loading the
entire tree of dependent objects can prove wasteful. Similarly, when the container
The controller invokes the Command object, which asks a JavaBean Account
object for information about the account. The Account object invokes the
business service, asking for these details, which are returned in the form of a
Value object ...
Subsequently, when the container invokes the e jbStore ( ) method on this
Composite Entity instance, the ejbStoreO method can check which dependent
objects have gone dirty and selectively save those changes to the database. The
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J2EE Platform Overview
Design Considerations Bad Practices and Refactorings
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