Inversion of Control Containers and the Dependency Injection pattern. In the Java community there's been a rush of lightweight containers that help to assemble components from different projects into a cohesive application.
Underlying these containers is a common pattern to how they perform the wiring, a concept they refer under the very generic name of "Inversion of Control". In this article I dig into how this pattern works, under the more specific name of "Dependency Injection", and contrast it with the Service Locator alternative. MF Bliki: IntentionalSoftware. Several years ago, my then colleague Matt Foemmel, dissatisfied with the tools with which we were building software, managed to get in touch with Charles Simonyi to find out more about the shadowy Intentional Software.
What he saw impressed him, and he persuaded me and other ThoughtWorkers to get involved too. What we saw was a tool with startling potential, but we remained frustrated by the secrecy and lack of urgency to release. That frustration ended last week. Last week I set off for Chris Sells's DSL Devcon, and Magnus Christerson - Intentional's product manager - suggested I pop in to see how they were going on. After several years of "Real Soon Now", I was unsure, but Rebecca Parsons, my colleague who has been keeping regular contact with Intentional, said that now would be a good time.
Martin Fowler's Bliki. Database ยท application architecture tags: Most EnterpriseApplications store persistent data with a database.
This database supports operational updates of the application's state, and also various reports used for decision support and analysis.