Enterprise Java Patterns
Enterprise Java Patterns
Enterprise Java Patterns
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How best would you summarize the disadvantages of a singleton that is non-Read only in a clustered env, given many JVM's thus multiple singletons?
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The main advantage of using this pattern version is flexibility in managing resources and their configuration.
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A fully self contained message is a pure and complete representation of a specific event and can be published and archived as such. The message can - instantly and in future - be interpreted as the respective event without the need to rely on additional data stores.
It is often desirable to design and build many large software applications (especially complex Rich Internet Application for example for emerging cloud computing) similar to component-based engineering employed to design and develop physical products such as cars or computers. Adopting such mature proven processes would increase productivity and quality.
Why do we need XI, Sonic, Cordys and Biztalk while we already got our WebSphere ESB... Why having more than one ESB?
A set of objects of a particular type have shared configuration, this shared configuration keeps changing at runtime. The objects must have latest configuration when certain operations are invoked.
A shared dynamic configuration needs to be made available to the objects just-in-time so that the configuration is latest and valid for the operation invoked.
The Configuration Inheritance Pattern，Its exact name is configuration information inheritance with the template technology. Like class inheritance, the application get function’s configuration information from the parent node first, then extend and override the configuration information.
IL Pattern is a kind of lazy object creation pattern. Object Creator waits until all or required informations to start creating the object. This will make sure that the object created is perfect so that the next part of a program can use it with out any issues.
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| EJB Design Patterns PDFEJB Design Patterns PDFEJB Design Patterns PDF |
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EJB Design Patterns is now available for free download in PDF format. The book contains a catalog of twenty advanced EJB patterns and provides strategies for mapping application requirements to patterns-driven design, J2EE development best practices, and more. EJB Design Patterns was the #2 book at Java One 2002, and held the #1 Java book position on Amazon.com for weeks since the book was released in March. Download your PDF here.
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| Useful patterns around the webUseful patterns around the webUseful patterns around the web |
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This
essential pattern describes how to model your entity beans.
How to make an entity bean a facade to a set of dependent objects.
Every guru should use unit testing.
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| Other Patterns sitesOther Patterns sitesOther Patterns sites |
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The original reference
site for patterns. Frequented by the gang of 4 and their mentors (Kent Beck, Ward Cunningham).
A catalogue of J2EE design patterns from Suns Consulting Division.
A catalogue of
high level business, architectural and topological patterns for large scale systems.
Design Patterns from the J2EE Blueprints, Suns authoritative guide to J2EE development.
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