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Modular Java: Declarative Modularity

The fourth of the Modular Java series covers declarative modularity. It describes how components can be declaratively defined and wired together, without having a code dependency on OSGi APIs. Declarative services will be used to write POJOs together dynamically, such that code no longer needs to explicitly register or consume OSGi services, and without any start ordering dependencies.

Alex Blewitt
on Dec 16, 2009
Key Takeaway Points and Lessons Learned from QCon San Francisco 2009

This article presents the main takeway points as seen by the many attendees who blogged about QCon. Comments are organized by tracks and sessions: Turotials, Keynotes, Agility as a Craft, Architecture for the Architect, Architectures You've Always Wondered About, Cool Stuff with Java, DSL in Practice, Emerging Languages, The Cloud: Platform or Utility, The Many Facets of Ruby, and many more!

Abel Avram
on Dec 15, 2009
Decoupling REST URLs from Code using NetKernel Grammars

In this article, Randolph Kahle explores the challenge of combining the potentially fluid world of URLs with the more static world of deployed code. Examples of how incoming URLS are parsed and outgoing URLs are generated using NetKernel grammars are given, and the NetKernel grammar system is explored in detail.

Randolph Kahle
on Dec 15, 2009
Interview and Book Excerpt: Eben Hewitt's Java SOA Cookbook

Java SOA Cookbook, by Eben Hewitt, covers Service Oriented Architecture (SOA) from a Java implementation stand-point. In the book, Eben discusses SOA model basics, tools and best practices. SOA Governance and Enterprise Service Bus are also discussed.

Srini Penchikala
on Dec 07, 2009
Extreme Transaction Processing Patterns: Write-behind Caching

Lan Vuong shows how to optimize the performance of an application by leveraging the write-behind caching pattern which sends batch updates to the back-end database asynchronously within a user configurable interval of time, instead of doing sychronous write-through updates typical in web apps.

Lan Vuong
on Dec 07, 2009
MicroORM - A Dynamically Typed ORM for VB and C# in about 160 Lines

Using the new DLR features in VB 10 and C# 4 you can build a configuration-free ORM that works well with legacy stored procedures. Though accessed using normal object-dot-property syntax, all the data objects are built at runtime based solely on the information returned by the database. And this is done with no interfaces to define, classes to implement, or data mapping definitions to write.

Jonathan Allen
on Dec 05, 2009
Strategic Domain Driven Design with Context Mapping

Many approaches to object oriented modeling tend not to scale well when the applications grow in size and complexity. Context Mapping technique can be used to manage the complexity in large software development projects. In this article, author Alberto Brandolini discusses the many sides of bounded contexts and how to use them to build a context map to support key decisions in a software project.

Alberto Brandolini
on Nov 25, 2009
Classloader Acrobatics: Code Generation with OSGi

Porting great infrastructure to OSGi often means solving complex classloading problems. This article is dedicated to the frameworks that face the hardest issues in this area: those that do dynamic code generation. Incidentally these are also the coolest frameworks: AOP wrappers, ORM mappers, and service proxy generators are just a few examples.

Todor Boev
on Nov 17, 2009
Modular Java: Dynamic Modularity

Modularity is an important aspect of large Java systems. Build scripts and projects are often split up into modules in order to improve the build, but this is rarely taken into account at runtime. This third part of the Modular Java series discusses dynamic modularity, how a bundle's classes are resolved, how they can come and go, and how they can communicate with each other.

Alex Blewitt
on Nov 12, 2009
Open Cloud Will Make Business SHINE

William El Kaim describes an Open Cloud Model based on agile principles and driven by an independent user community to define it further. He provides a sketch of a potential Cloud Operating System. He also defines the SHINE principles for transforming IT into BT (Business Technology).

William El Kaim
on Nov 02, 2009
Creating and Extending Apache Wicket Web Applications

Apache Wicket is a powerful, light-weight component-based web application framework with strong separation of presentation and business logic. It enables you to create quality Web 2.0 applications which are easy to test, debug and support.

Krzysztof Śmigielski
on Nov 02, 2009
Modular Java: Static Modularity

Modularity is an important aspect of large Java systems. Build scripts and projects are often split up into modules in order to improve the build, but this is rarely taken into account at runtime. This second part of the Modular Java series discusses static modularity, the creation of bundles, how to install them into an OSGi engine and how to set up (versioned) dependencies between bundles.

Alex Blewitt
on Oct 24, 2009

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