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Z2 resource model intro » History » Version 6

Henning Blohm, 21.09.2012 09:54

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h1. An introduction to the Z2 component model
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In order to understand Z2 in some depth, it is essential to understand the Z2 component model.
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Z2 core at its very heart knows of these conceptual objects:
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!pseudo_uml.png!
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*Resource*: The service provider API for extending Z2. If you implement anything that can be looked up, it is implemented as a "Resource":http://www.z2-environment.net/javadoc/com.zfabrik.core.api!2Fjava/api/com/zfabrik/resources/provider/Resource.html.
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*Component*: _Components_ bridge between declarations and persistent files and Resources. Components are stored in component repositories. A component has a type. The type is used to resolve a component factory that - at runtime - constructs a Resource representing the component. Components are what Z2 assigns a life-cycle to. A Web application, Java code, data sources, make components.
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*Component Type*: A _Component Type_ is identified by a name and implemented as a component. The responsibility of a component type is to turn component declarations of a specified type into Resources at runtime. Component types implement "IComponentFactory":http://www.z2-environment.net/javadoc/com.zfabrik.core.api!2Fjava/api/index.html (implicitly or explicitly).
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*Component Repository*: _Component Repositories_ make components available to Z2. That is, on the one hand a component repository has some persistent storage that holds component declarations. On the other hand, a component repository is a component that implements "IComponentRepository":http://www.z2-environment.net/javadoc/com.zfabrik.core.api!2Fjava/api/com/zfabrik/components/provider/IComponentsRepository.html.
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*Synchronizer*: A synchronizer checks component repositories for updates and performs invalidations of modified components at runtime.
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Interested? Please read on "in the documentation":http://www.z2-environment.eu/v21doc#componentsAndComponentRepos.