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Describing your iPOJO components

This section describes the different features supported by iPOJO. This page aims to answer to the following question: "What can I write in my iPOJO component descriptor?"

Core features

Core features are provided with the iPOJO runtime bundles. You can use it directly, as soon as the iPOJO runtime is deployed.

• How to require a service
• How to publish and provide a service
• How to react to lifecycle state changes
• How to description component configuration
• How to enable/disable instance introspection
• How to act on the instance state from the implementation

Extensions

Extensions extend the iPOJO model to add a specific functionality. This is made thanks to the external handler mechanism. So before using one of these features, deploy the attached external handler.

• How to receive and send events with the Event Admin
• How to reconfigure instances with JMX
• How to implement an extender pattern
• How to implement a whiteboard pattern
• How to wait for services and inject proxies

A missing functionality ?

iPOJO component model is extensible. So, you can implement your own handler managing you specific requirement. Refer the handler development guide (How to write your own handler) for more details.