AEM Developer Series Sling Models are “pure” POJOs which maps Sling objects (resources, request objects etc.). Since Sling Models are annotation-driven Plain Old Java Objects (POJOs), annotations are used a lot. They allow you to map resource properties, assign default values, inject OSGi services and much more.

What are AEM models?

The Models

They define what is available in an entity and how that data is generated from AEM content. Before you start working with Spaces, Folders, and Entities, you should be familiar with creating and managing models. A model exists outside of an app as more than one app can use it.

How do you write Sling models in AEM?

Create Sling models and use them on components using Sightly

  1. Open eclipse go to HelloWorldModel. java. Create a new string variable by name text. …
  2. Open helloWorld.html file. Add below code to helloWorld. …
  3. Build the code using command prompt.
  4. Open command prompt (cmd) and go to project pom. xml location.
  5. Run below command.

What is the use of Sling model?

Sling Models are annotation driven Java “POJO’s” (Plain Old Java Objects) that facilitate the mapping of data from the JCR to Java variables, and provide a number of other niceties when developing in the context of AEM.

What is Sling framework?

Apache Sling is an open source Web framework for the Java platform designed to create content-centric applications on top of a JSR-170-compliant (a.k.a. JCR) content repository such as Apache Jackrabbit.

What is Sling servlet in AEM?

Sling Servlet

A Servlet is a class used to extend the capabilities of servers that host applications accessed by means of a request-response programming model. For such applications, Servlet technology defines HTTP-specific servlet classes.

What is Adapters in Sling model?

Sling offers an Adapter pattern to conveniently translate objects that implement the Adaptable interface. This interface provides a generic adaptTo() method that will translate the object to the class type being passed as the argument.

What is @inject annotation in AEM?

@Inject: This annotation is used to inject a property, resource, request anything. This is a generic annotation, which traverses all the sling model injectors based on service ranking.

What is OSGi in AEM?

OSGi is a fundamental element in the technology stack of AEM. It is used to control the composite bundles of AEM and their configuration. OSGi “provides the standardized primitives that allow applications to be constructed from small, reusable and collaborative components.

What is Crxde in AEM?

CRXDE Lite is embedded into AEM and enables you to perform standard development tasks in the browser. With CRXDE Lite, you can create a project, create and edit files (like . jsp and . java), folders, templates, components, dialogs, nodes, properties and bundles while logging.

How does a Sling model work in AEM?

AEM Developer Series

Sling Models are “pure” POJOs which maps Sling objects (resources, request objects etc.). Since Sling Models are annotation-driven Plain Old Java Objects (POJOs), annotations are used a lot. They allow you to map resource properties, assign default values, inject OSGi services and much more.

How do you use a Sling AEM?

Quote from video: So you should use sling model so basically the sling models are a separate project apache project but aem adopted that project.

What is resource in AEM?

Resources are pieces of content on which Sling acts. The Resource is also an Adaptable to get adapters to other types. A JCR based resource might support adapting to the JCR Node on which the resource is based. A Resource object is valid for as long as the ResourceResolver that provided this instance is valid.

How does a Sling model work in AEM?

AEM Developer Series

Sling Models are “pure” POJOs which maps Sling objects (resources, request objects etc.). Since Sling Models are annotation-driven Plain Old Java Objects (POJOs), annotations are used a lot. They allow you to map resource properties, assign default values, inject OSGi services and much more.

How do you write a model in AEM?

Quote from the video:
Quote from video: Comes with am. So how how we will be creating uh this controllers so for that you can understand from this diagram. So i will be writing a component. And for back-end i will be writing one interface.

How do you get the ResourceResolver Sling model?

We can use @SlingObject to get ResourceResolver in slingmodels. private ResourceResolver resolver; use this resolver to get resource. @PostConstruct @Override protected void init() { Resource resource = resolver.

How do I create a custom component in AEM?

Custom Component

  1. Starter Project. NOTE. …
  2. Create Component Definition. In the ui. …
  3. Create the HTL script. Beneath the byline folder, add a new file byline. …
  4. Create the Dialog definition. …
  5. Create the Policy dialog. …
  6. Deploy the code. …
  7. Add an image to the AEM Assets. …
  8. Author the component.

What are Clientlibs in AEM?

Clientlibs or Client libraries in aem is one of the most widely used features provided by Adobe, it allows us to not only manage our client side resources like ( JavaScript, CSS, images, fonts etc ), but also provide options to debug, minify,merge and gzip the client-side code.

What is the difference between component and template?

Components are re-usable modules that implement specific application logic to render the content of our website. A Template is used to create a Page and defines which components can be used within the selected scope.