This link has been bookmarked by 35 people . It was first bookmarked on 01 Oct 2006, by Pete McKinstry.
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26 Jul 16
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although only the service registry belongs to the services platform. In the service orientation interaction, service providers publish service descriptions, and service requesters discover services and bind to the service providers. Publication and discovery are based on a service description.
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In the context of OSGi, a service is described as a Java class or interface, the service interface, along with a variable number of attributes, the service properties, that are name and value pairs.
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In OSGi, service providers and requesters are part of an entity called a bundle that is both a logical as well as physical entity. Service interfaces are implemented by objects created by the bundle.
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Physically, a bundle correspond to a delivery and deployment unit that is materialized by a JAR file that contains code and resources (i.e., images, libraries, etc.) along with a file that contains information about the bundle, the manifest file.
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These deployment activities include installation, removal, update, starting (activation) and stopping (de-activation) of a physical bundle. Once a bundle is installed in the platform, it can be activated if deployment dependencies that are associated to the bundle are fulfilled (these dependencies are described in the next section).
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The activation or de-activation of a physical bundle results in the creation or destruction of a unique logical bundle, materialized by an instance from a class inside the bundle called a bundle activator.
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Open Services Gateway Initiative
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In the context of OSGi, a service is described as a Java class or interface
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service interface
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Service properties allow different service providers that provide services with the same service interface to be differentiated
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service properties
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a bundle correspond to a delivery and deployment unit
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materialized by a JAR file that contains code and resources
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Once a bundle is installed in the platform, it can be activated if deployment dependencies that are associated to the bundle are fulfilled
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Hendy Irawan
The Open Services Gateway Initiative OSGi is an independent, non-profit corporation working to define and promote open specifications for the delivery of managed services to networked environments, such as homes and automobiles. These specifications defiosgi plugins java framework extensions documentation development article tutorial programming components intro eclipse
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auxonne auxonneThis section gives a very brief presentation of OSGi. More information can be obtained from the OSGi specification.
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12 Apr 06
vikramsjnThis section gives a very brief presentation of OSGi. More information can be obtained from the OSGi specification.
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