June 17 is Apache Karaf as Apache top project. Karaf is a run-time package that contains an OSGI framework (Equinox or Felix), a command shell (Felix Gogo), and a number of utilities built into it by default.Although Equinox and Felix can be used alone, the KARAF is designed to combine the excellent OSGI capabilities o
Such bundle can also be considered as a bundle dependent on the osgi feature. The only difference is that the bundle fully utilizes the service features in osgi and references the services and (or) released by other bundle) release your own services to the osgi environment. The service mechanism provided by the osgi
I. Purpose of the document
The purpose of this article is to allow developers to enter the development stage as soon as possible, avoid spending too much energy and time on environment settings, simplify development environment settings, and improve work efficiency, play the role of R D support.
The final expected result of this article is that readers can simply copy and paste the configuration content by following the instructions in this article and the provided environment configuration co
OSGi are called Bundle, so if you are based on OSGi programs, you can find many useful Bundle online to plug into your software system directly. Bundle is actually a jar file, just in MANIFEST. MF has a special definition, each Bundle by the implementation of the Bundleactivator to control the Bundle lifecycle and release, listen to the framework of events, or to communicate with the framework.OSGI is a sp
how to develop, deploy, and run enterprise-class OSG using the WebSphere application Server V7 Feature Pack for OSGi applications I apply.
Related Concepts of OSGi
What OSGi brings us is a standardized, dynamic, elegant component model that changes the Java traditional flat class loading structure, effectively solves the version conflict problem of Java softwa
To develop a web application in the Equinox environment, you must use the functions provided by some toolkit to achieve the interconnection of resources between the Web server and the Equinox environment.
Equinox provides the org. Eclipse. Equinox. http. helper package to register the web application content in the fo
The red content comes from personal understanding, and the rest comes from eclipse helps.
English:
Osgi. Bundles
The comma-separated list of bundles which are automatically installed and optionally started once the system is up and running. Each entry is of the form:
If the start-level (> 0 integer) is omitted then the framework will use the default start level for the bundle. if the "Start" tag is added t
In the Equinox environment, each bundle is loaded by an independent classloader to implement classes. In osgi framework, bundle is a modular Management Unit. All applications and resources must use bundle as the carrier. Each bundle has its own class loader. Different bundle (in the same VM) can share or hide the package through the import and export mechanisms. Class Loader establishes a loading class prox
about integrating itself, including integrating open source ).
I mentioned a plug-in architecture, which is similar to my blueprint for our company's platform. Inspired by the blueprint of our company's software development platform (framework), it is the Eclipse plug-in architecture that is built on osgi. So I have to study osgi. (Model-driven development may be the mainstream development model in the fut
, Equinox, We use Felix to build an OSGi environment here. First download Apache Felix's binary release on the Apache web site, create a Java project under Eclipse, overwrite Felix decompression, and then add Felix.jar to the Lib directory to CIn Lasspath, Felix's startup portal is the main method in its Org.apache.felix.main.Main class, and we can call this method ourselves in the class to start the ent
Equinox
L an osgi R4 specification implementation
L involve: osgi framework implement, osgi standard service bundles implementation, osgi server-side app (J2EE), equinox deployment framework
Modularity
L objective: Changes in o
Publishing and using Services
Since the OSGi framework can easily hide implementation classes, it is natural to provide interfaces externally, and the OSGi Framework provides registration and query capabilities for services. OK, so let's actually do it on the basis of Hello World project. (If not please refer to previous article: OSGi notes (i) HelloWorld)
We nee
What is OSGi?OSGi is also known as the dynamic modular system of the Java language , which defines an infrastructure for the development of modular applications. OSGi containers already have several open source implementations, such as Knoflerfish,Equinox , and Apache Felix. Through these containers, you can split your
The main console commands are listed below:Table 1. Equinox OSGi main console command table
Category
Command
Meaning
Control framework
launch
Start frame
shutdown
Stop frame
close
Close, exit frame
exit
Exit immediately, equivalent to System.exit
init
Uninstall all bundles (if
What is spring-DM?
Spring-DM refers to spring dynamic modules.
DM Server is a fully modular and osgi-based Java Server that runs Enterprise Java applications andSpringApplications provide greater flexibility and reliability. Springsource application platform is built onSpringThe application server on osgi and Apache Tomcat, the new application server abandons the original Java EE Server Standard, naturall
methods of use are being discovered every day, such as the server Layer feature servlet, JavaServer Pages, and other HTTP resources in the Eclipse style plug-in.
Eclipse Foundation has decided to play a key role in driving the OSGi specification forward, so that it can exploit osgi for itself and others. A number of additions to the OSGi specification were made
the Run button to see what happens: 3.5 view changes in the frame state during program execution using the command line
3.4 Actually gives only one result, and if you're not quite sure how the results come out, the content of this section should help you better understand the process of outputting the results. Here's a step-by-step installation and execution of bundle through some of the equinox command lines, and look at the state of the frame in th
In the development process of the team, it is inevitable that a package is declared inside the bundle, and the same package is imported from the external, what will happen?
To make a small experiment.
1. Create two plug-in projects.
A. Create the first plug-in Project
B. Create a second plug-in project.
2. In addition to different packages, each project also declares the same package name.Create a class with the same name in the same package name, as shown in.
3. write code
A. The first same
Osgi 4.2 specification released
Original article: osgi 4.2 released, Infoq
Author:Alex Blewitt September 16, 2009
Translators: 88250September 17, 2009
Osgi AllianceOsgi 4.2 was released the day before yesterdaySpecification. Although early drafts have been available, this is the final standard release version.
Some osgi
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
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