sling models in aem interview questions

AEM is a content management service that aids the development of websites, mobile applications, and content. The system allows web development and digital marketing professionals to devise their marketing strategies for targeting customers.

The different types of interfaces in AEM are Classic UI Homepage, MCM Console, DAM Console, Launches Console, Tagging Console, Touch UI Console etc.

Components are used to identify the functionality of the elements on the website. They are reusable and can contain other configuration files. They can be edited and have a user interface. They can be launched into live sites and test environments.

We can take an example of a component that uses a dialogue grid. The steps to make the AEM component are:

The AEM client library is used for managing all the client-side code as well as the Javascript and CSS resources such as fonts, s. It helps us to maintain, debug, merge and minimise the code and resources.

Custom tag libraries can be developed using AEM. This facilitates the calling or invoking its actions from an AEM component. These actions can be invoked using XML code.

In AEM, Dispatcher is a tool that is used to balance the load and helps in caching. The device can be considered as a security enhancement option for the AEM server from external attacks.

Replication in AEM is a process of publishing pages content from Author Instance to Process Instance. It is also used to filter content from Dispatcher cache. It transfers user data from the publish environment to the author environment.

If the AEM replication fails, the action must be taken according to the situation. If the replications are getting queued in the replication agent queues, it can be checked by accessing the /etc/replication/agents.author.html. Click replication agents to analyse the situation.

In reverse replication, the content is transferred from the publisher environment to theauthor environment. It is used to replicate data related to profile details of the user and posts in the website’s forum.

Starting the AEM in debug mode will let us enable the debugger mode. The following code needs to be added in the command line:

Sling is used to develop web applications in AEM. Through the framework, web apps can be developed that are content-oriented. It is based on REST principles and is built on top of JCR (Java Content Repository). It is used for storing and handling content on the Java Repository.

To call service from a sling model in AEM, by developing a custom component that has a TreePanel type object.

Overlay in AEM is the process of redefining the existing functionality and customising it. It can be making a custom component by modifying the current foundation component according to requirements. Recommended Posts:

Here are a few Component level questions that are asked to AEM developers. The idea is that you should know in and out of components, starting from how to build a simple to the complex component, and also you should share the best practices based on your experience as examples.

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Day 10: Getting to know Sling Models

  • Download the latest Sling Models API and Implementation bundles from here and upload them to ./system/console/bundles
  • In the project’s pom files, make sure the version numbers for Sling Models API and Implementation are updated based on the ones installed in your AEM server.
  • In your core module pom.xml file, check for maven-bundle-plugin, and make sure you have all packages that contain the model classes or interfaces in header Sling-Model-Packages, so that your models can be picked up.
  • Since AEM 6.3 is built on Sling 1.3, we dont have to install any bundles in our AEM server.
  • But we need to make sure that the Sling Models API version in AEM matches with the one in our projects pom files.
  • Starting the AEM in debug mode will let us enable the debugger mode. The following code needs to be added in the command line:

    Sling is used to develop web applications in AEM. Through the framework, web apps can be developed that are content-oriented. It is based on REST principles and is built on top of JCR (Java Content Repository). It is used for storing and handling content on the Java Repository.

    We can take an example of a component that uses a dialogue grid. The steps to make the AEM component are:

    In reverse replication, the content is transferred from the publisher environment to theauthor environment. It is used to replicate data related to profile details of the user and posts in the website’s forum.

    The different types of interfaces in AEM are Classic UI Homepage, MCM Console, DAM Console, Launches Console, Tagging Console, Touch UI Console etc.

    FAQ

    What is Sling model in AEM?

    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.

    How does a Sling work in AEM?

    Sling uses a JCR repository as its data store. CQ/AEM is built using Sling. “Using Sling, the type of content to be rendered is not the first processing consideration. Instead the main consideration is whether the URL resolves to a content object for which a script can then be found to perform the rendering.”

    What is the use of Sling model?

    In simple terms Sling Models are simple POJO classes which are mapped automatically with Sling Objects (resource, request objects..) and allow us to access jcr node property values directly into java classes.

    How do you get resources from 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.

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