osgi framework

application is modeled as a JAR package. However, there are limitations to using JAR files: Jar packages are resolved through CLASSPATH environment variables, which do not provide a reliable framework for managing JAR dependencies. Jars cannot be versioned, so you cannot track the history of the jar packages that you create or modify. There is no framework for dynamically updating JAR files when code chang

OSGi Introductory article: module layer1 What is modularityThe module layer is the most basic part of the OSGi framework, where the modular nature of Java has been well implemented in this layer. However, this implementation is obviously different from some of the existing modularity features of Java itself. This article describes some of the basics of the module

Introduction: as a new de facto industry standard, OSGi has received extensive attention, its basic concept of service-oriented (interface) and the ability of dynamic module deployment, is the goal that enterprise application has been pursuing for a long time. Spring is a well-known lightweight Java EE Development Framework characterized by interface-oriented programming and non-intrusive dependency injecti

started and manipulated in an environment. Eclipse provides the environment with an implementation of the OSGi R4 specification. Because Eclipse is essentially OSGi-driven, you must understand how the concept of the Eclipse plug-in relates to the OSGi framework. In this article, I'll explain this relationship in deta

Reprint Source: Http://www.cnblogs.com/liuzhuo1. Creating an OSGi ProjectFirst open the New Project Wizard and choose Create Eclipse plug-in project. SELECT [OSGi Framework] in the [Target Platform] option.Figure 5-1 Creating a plug-in projectSelect when selecting a template, and click Done after the Hello OSGi bundle.

OSGi is the abbreviation for the Open Service Gateway initiative, which was established in 1999 and is a non-profit organization designed to establish an open service specification to open standards for service delivery over the network. The OSGi specification includes various aspects of building an open, deliverable Network Service, and the OSGi specification i

Introduction to OSGi: Life cycle LayerObjectiveThe life cycle layer in the OSGi framework belongs to the layer above the module layer, and its operation is based on the function of the module layer. One of the main functions of the life cycle layer is to enable you to manage applications externally or to build self-managed applications (or the combination of the

The basic approach is given in the OSGi principles and best practices book, where a few lines of code are added to the Lin Hao went to complete a usable example: 1 first set up several plug-in projects, and exported into the plug-in package, where the export of the plug-in package is uniformly placed under the G://osgi_prj//system_bundle directory 2 build Java project and write a class with the main method for starting

OSGI (Dynamic model system for Java)The OSGi (Open Service Gateway Initiative) technology is a series of specifications for the dynamic modular system of Java. OSGi refers to OSGi, on the one hand, that maintains OSGi specificationsThe official alliance, on the other hand, r

-profit organization that is responsible for OSGi technology, similar to the functions of Eclipse Foundation. OSGi Alliance is responsible for developing specifications that describe OSGi technology. In short, OSGI technology provides a service-oriented component-based platform for application development. All implemen

purpose is to provide a common software operating platform for various embedded devices, a middleware platform that distinguishes between device operating systems and hardware, through which applications can be provided to different software providers (OSGi is called Bundle) The ability to perform component lifecycle management, such as where application components can be installed, upgraded, or removed from running without disrupting device operatio

Osgi: the foundation of eclipse Osgi provides a set of standard component-oriented specifications for network services. network services are the basis of Service Oriented Architecture. by using the osgi platform, you can easily manage the lifecycle of software components. These components can be deployed on any device on the network, and can be dynamically instal

network environment changes are very large. 4. Openness: The standard is not designed for a specific system, and the OSGi Reference Architecture must consider and support many different scenarios. Entities involved in the 2.1.2 OSGi Reference Architecture 1. Service platform: an instance of a Java virtual machine, an OSGI

A recent study, which learned about OSGi Technology, felt that OSGi was somewhat difficult to learn. But finally mastered and popularized will be a more practical technology for system development. Here and everyone to share their own sentiment. 1. What is OSGIOSGi , an "open service Gateway", is a Dynamic modular specification initiated by the OSGi Consortium wi

1. BackgroundWith the recent modularity of Web projects to support hot-swappable, dynamic scaling, we began to look at how OSGi can be introduced into Web projects. For OSGi, you can refer to OSGi research and summary. Now that the mainstream Java EE framework is inseparable from spring, the seamless integration of

implements its own framework for event monitoring, which seems unnecessary. Therefore, it is recommended to use the default settings, as shown in Figure 3:Figure 3. Use default settings Activator: This is the program entry that is called first when the bundle starts, equivalent to the main function in the Java module. The difference is that main needs to be called through the command line, and the Activator of OS