What Is Apache Felix

What is Apache Felix used for?

Apache Felix is a community effort to implement the OSGi Framework and Service platform and other interesting OSGi-related technologies under the Apache license.

What is Apache Felix in AEM?

The Web console in AEM is based on the Apache Felix Web Management Console. Apache Felix is a community effort to implement the OSGi R4 Service Platform, which includes the OSGi framework and standard services. Components: used for controlling the status of components required for AEM.

What is Apache Felix Web console?

The Apache Felix Web Console is a simple tool to inspect and manage OSGi framework instances using your favourite Web Browser.

What is Felix container?

Felix is the Apache implementation of OSGi Release 4 specification. OSGi is a specification of a Java based service platform targeted for use by systems that require long running times, dynamic updates, and minimal disruptions to the running environment.

How does Apache Sling work?

Apache Sling™ is a framework for RESTful web-applications based on an extensible content tree. In a nutshell, Sling maps HTTP request URLs to content resources based on the request’s path, extension and selectors. Discussions about Sling happen on our mailing lists, see our Project Information page for more info.

Is OSGi a Microservice?

OSGI is an application architecture, while microservices is a distributed systems concept.

What does OSGi stand for?

OSGi (Open Service Gateway Initiative) is a Java framework for developing and deploying modular software programs and libraries.

What is editable templates in AEM?

Editable templates allow specialized authors to create and update page templates and manage advanced policy configurations with Adobe Experience Manager (AEM) Sites. Your browser does not support the iframe element. Editable Templates are the recommendation for building new AEM Sites.

What is OSGi bundles in AEM?

OSGi stands for Open Service Gateway initiative. It is a Java framework for developing and deploying modular software programs and libraries. The first part is a specification for modular components called bundles, which are commonly referred to as plug-ins.

What is Karaf container?

Apache Karaf is a modern polymorphic application container. Karaf can be used as a standalone container, supporting a wide range of applications and technologies. It also supports the “run anywhere” concept (on any machine with Java, cloud, docker images, … ​) using the embedded mode.

What Felix Service URL handler does?

Felix installs the URL Handlers service by default. It is not recommended to disable this, but the main reason for doing so it because the URL Handlers implementation invokes methods to set the singleton factories for URL stream and content handler factories.

What is AEM API?

AEM Screens provides a simple RESTful API that follows the Siren specification. It allows to navigate the content structure and send commands to devices in the environment. The API is accessible at http://localhost:4502/api/screens.json.

What is the difference between JCR API and Sling API?

While on pure JCR you only work with raw repository structures (nodes and properties), the Sling resource abstraction offers you easier handling (no need to deal with the repository exceptions any more) and much more options to interact with you business objects and services.

What is Sling in AEM?

AEM is built using Sling, a Web application framework based on REST principles that provides easy development of content-oriented applications. Sling uses a JCR repository, such as Apache Jackrabbit, or in the case of AEM, the CRX Content Repository, as its data store.

Why is OSGi used?

OSGi facilitates creating and managing modular Java components (called bundles) that can be deployed in a container. As a developer, you use the OSGi specification and tools to create one or more bundles. OSGi defines the lifecycle for these bundles. It also hosts them and supports their interactions in a container.

What is OSGi stackoverflow?

Simply said, OSGi is a dynamic module system for Java. It defines means to install, uninstall, update, start and stop modules. Modules can be installed, uninstalled etc without stopping or restarting the Java VM. An OSGi framework manages the described lifecycle of and dependencies between the bundles in a secure way.

What is the use of OSGi bundle?

OSGi is a Java framework for developing and deploying modular software programs and libraries. Each bundle is a tightly coupled, dynamically loadable collection of classes, jars, and configuration files that explicitly declare their external dependencies (if any).

What is difference between jar and OSGi bundle?

1 Answer. There is basically no difference. A JAR is a bundle and a bundle is a JAR, the formats are identical. However, a useful bundle requires OSGi metadata in its manifest so that an OSGi framework can manage the visibility of classes between bundles.

What is a service in AEM?

What is a Service? An OSGi service is a java object instance, registered into an OSGi framework with a set of properties. Any java object can be registered as a service, but typically it implements a well-known interface.

What is OSGi Bundle for ESB?

The runtime part of Talend ESB is an OSGI container that manages dynamic modules. An OSGI container is a cross between an application server (WebSphere, Tomcat, etc) and a dependency framework like Spring or Google Guice.

Can I sell Canva Pro templates?

For Canva Creators, you can sell Canva templates on Creative Market, Etsy, on your own website, or on any other marketplace, as long as they bring your users back to the canva.com editor.

What is dispatcher in AEM?

Dispatcher is Adobe Experience Manager’s caching and/or load balancing tool that can be used in conjunction with an enterprise-class web server. The process for deploying dispatcher is independent of the web server and the OS platform chosen: Configure AEM so that content updates invalidate the cache.

What are policies in AEM?

Policy = Content Policies. Content policies are configurations that govern the behavior of components across an entire section of an AEM website. In AEM versions prior to 6.3, they were sometimes called designs, but for the purposes of clarity I will call them content policies through this blog post.