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Supporting Advanced User Interaction Patterns in jBPM

Boris Lublinsky discusses task management in the jBPM and then demonstrates how to implement four advanced user interaction patterns(4-eyes principle, nomination, escalation, and chained execution) using JBoss and the jBPM. He also notes the advantages and limitations of these patterns.

Boris Lublinsky
on Aug 06, 2009
Introduction to Data Services

This article by Vijay Narayanan, provides an introduction to several aspects of data services that will be of interest to both SOA practitioners and data architects. A general case for data services introduces the article before the author explores specific issues, including: definition of need, rationale and benefits, scope, development, and consumption patterns.

Vijay Narayanan
on May 19, 2009
Grid Computing on the Azure Cloud Computing Platform, Part 2: Developing a Grid Application

David Pallmann shows how to perform grid computations on the Azure cloud computing platform. In Part 1 he presented a design pattern, while in Part 2&3 he shows how to develop&run a grid application.

David Pallmann
on May 11, 2009
Grid Computing on the Azure Cloud Computing Platform, Part 1

In this 3-parts series of articles, David Pallmann explains how to perform grid computations on the Azure cloud computing platform. In Part 1 he presents a design pattern for using Azure for grid computing, while in Part 2 and 3 he is going to give a concrete code example.

David Pallmann
on May 01, 2009
A Fusion of Proven Ideas: A Look Behind S#arp Architecture

In this article Billy McCafferty presents S#arp Architecture, an ASP.NET MVC architectural framework meant to leverage current best practices in architecting ASP.NET web applications by providing a project code template which uses Domain-Driven Design techniques and has built-in support for NHibernate, Castle Windsor and SQLite.

Billy McCafferty
on Mar 16, 2009
Interview and Book Excerpt: Thomas Erl's SOA Design Patterns

Today, InfoQ publishes an excerpt from Thomas Erl’s newest book, SOA Design Patterns, and used the opportunity to interview the author. Topics covered include the role of a patterns catalog, differences between service-orientation, SOA, and Web services, and the current state of the SOA world.

Stefan Tilkov
on Mar 03, 2009
Getting Started With Spring Integration

In this article, Joshua Long introduces the readers to Spring Integration, an extension of the Spring framework supporting the Enterprise Integration Patterns. After a short introduction into Enterprise Application Integration (EAI), the article presents an example of the integration between an email application and a blogger one.

Joshua Long
on Jan 20, 2009
Describing RESTful Applications

If servers control their own namespace without a fixed resource hierarchy, how do clients, and more importantly client developers, get to learn or discover URIs of resources? In a new article, Subbu Allamaraju discusses how to describe a RESTful API, focusing on using hypermedia instead of an out-of-band description format such as WADL or WSDL 2.0.

Subbu Allamaraju
on Dec 16, 2008
The Limits of Code Optimization: a new Singleton Pattern Implementation

It is a well known fact in the programming world that the java (double-check) singleton pattern is not thread safe and can’t be fixed. In this article, Dr. Alexey Yakubovich provides an implementation of the Singleton pattern that he claims is thread-safe.

Alexey Yakubovich
on Nov 14, 2008
How to GET a Cup of Coffee

In this article, Jim Webber, Savas Parastatidis and Ian Robinson show how to drive an application's flow through the use of hypermedia in a RESTful application, using the well-known example from Gregor Hohpe's "Starbucks does not use Two-Phase-Commit" to illustrate how the Web's concepts can be used for integration purposes.

Savas Parastatidis Ian Robinson Jim Webber
on Oct 02, 2008
Book Review: Agile Adoption Patterns, A Roadmap to Organizational Success

Ryan Cooper reviewed Amr Elssamadisy's new book and found it a useful framework for designing customized adoption strategies. Rather than a single recipe of Agile practices for everyone, the reader is offered patterns and tools to help determine which practices will most effectively help them reach their own organization's specific goals.

Ryan Cooper
on Jul 21, 2008
Ruby's Open Classes - Or: How Not To Patch Like A Monkey

Ruby's Open Classes are powerful - but can easily be misused. This article looks at how to minimize the risk of opening classes, alternatives, and how other languages provide similar capabilities.

Werner Schuster
on Jul 11, 2008