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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Often, the client invokes a business object's get methods multiple times until it
obtains all the attribute values. Session ... Every method call made to the
business service object, be it an entity bean or a session bean, is potentially
remote. Thus ...
Thus, the client may invoke multiple remote calls to obtain the required data. •
The number of calls made by the client to the enterprise bean impacts network
performance. ... A single method call is used to send and retrieve the value object
When invoking enterprise beans, every client invocation is potentially a remote
method call. Each access to the business object is relatively fine-grained. As the
number of participants increases in a scenario, the number of such remote
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J2EE Platform Overview
Design Considerations Bad Practices and Refactorings
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