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Inversion of Control with Castle Windsor

Inversion of Control with Castle Windsor. Daniel Hölbling http://www.tigraine.at tigraine@tigraine.at. Agenda. Why Inversion of Control Short intro of the problem Live coding session Using the Windsor Container. Scenario: Traffic watcher. Application that monitors Traffic.

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Inversion of Control with Castle Windsor

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  1. Inversion of Controlwith Castle Windsor Daniel Hölbling http://www.tigraine.at tigraine@tigraine.at

  2. Agenda • Why Inversion of Control • Short intro of the problem • Live coding session • Using the Windsor Container

  3. Scenario: Traffic watcher • Application that monitors Traffic. • Should send alarms in case of accident calls

  4. The TrafficWatcher Has nothing to do with notifying The only “real” responsibility.

  5. The Truth Construction Configuration Actual work

  6. Factory So and how are we supposed to test this? TrafficWatcherDEPENDS on Factory

  7. Dependency injection Notifier gets passed to Watcher No construction/retrieval in the TrafficWatcher Clean 

  8. Testable! Yay! We can test Trafficwatcher without any real Notifier

  9. Castle Windsor Container • A flexible component built to take care of object graph construction • There are other containers too: • Unity, StructureMap, nInject… in .NET • Guice, Loom, Pico... in Java • (rolling your own is rather simple )

  10. Coding Time forevenmorecode

  11. Suggestedreading • AyendeRahien (http://www.ayende.com) • Robert C. Martin • Martin Fowler(http://martinfowler.com/) • MiškoHevery (http://misko.hevery.com/) • Rob Conery (blog.wekeroad.com/) • CodeBetter.com

  12. Thanksforlistening! http://www.castleproject.org/container/ http://www.tigraine.at

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