SlideShare is now on Android. 15 million presentations at your fingertips.  Get the app

×
  • Share
  • Email
  • Embed
  • Like
  • Save
  • Private Content
 

Subsystems: For those occasions where bundles are just too small... - Graham Charters

by on Sep 21, 2011

  • 3,877 views

Enterprise OSGi 4.2 standardized the use of a number of component models for developing Enterprise OSGi applications: Servlet, JSP, Blueprint, and JPA. Implementations of these specifications have ...

Enterprise OSGi 4.2 standardized the use of a number of component models for developing Enterprise OSGi applications: Servlet, JSP, Blueprint, and JPA. Implementations of these specifications have since become available in many open source projects and products such as Apache Aries, Eclipse Gemini/Virgo, GlassFish, JBoss Application Server and WebSphere Application Server. Looking at a number of these environments, it's clear that when it comes to assembly and deployment there's still something missing, namely something to represent a collection of bundles (e.g. an Application). Eclipse Virgo has "PARs" and "Plans", Apache Aries has "Applications", and WebSphere Application Server has “Applications” and “Composites”. Looking further afield to kernel projects, other bundle collection concepts exist, such as Apache Karaf "Features". Each model has concepts in common, such as identity, versioning and content, but also differences like isolation and format. It is clear that this is an area of Enterprise OSGi that could benefit from standardization and hence the Subsystems specification is being created. Subsystems is currently a draft specification which is standardizing artefacts representing collections of bundles, such as an Application. This presentation will introduce the current Subsystems design. It will describe how Subsystems can be used for development and deployment of bundle collections with different isolation semantics, to address the application, composite and feature use cases seen in the OSGi community today.

Statistics

Views

Total Views
3,877
Views on SlideShare
3,877
Embed Views
0

Actions

Likes
2
Downloads
103
Comments
0

0 Embeds 0

No embeds

Accessibility

Categories

Upload Details

Uploaded via SlideShare as Adobe PDF

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
Post Comment
Edit your comment

Subsystems: For those occasions where bundles are just too small... - Graham Charters Subsystems: For those occasions where bundles are just too small... - Graham Charters Presentation Transcript