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|Integration||Easy to access||Easy to access|
|CMS Support||Multiple User Access Supported||Multiple User Access Supported|
|Customization||Moderate customizations||Highly customizable|
|Single platform support||Yes||No|
It is used for adding site-specific js and CSS files to the page and also third-party js and CSS files.
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It is a list of other client library categories on which this library folder depends. For example, given two cq: ClientLibraryFolder nodes F and G, if a file in F requires another file in G to function properly, then at least one of the categories of G should be among the dependencies of F.
Embed: Used to embed code from other libraries. If node F embeds nodes G and H, the resulting HTML will be a concentration of content from nodes G and H.
Dependency: Please refer to the above answer.
Package: A Package is a zip file that contains the content in the form of a file-system serialization (called “vault” serialization) that displays the content from the repository as an easy-to-use-and-edit representation of files and folders. Packages can include content and project-related data.
Bundle: Bundle is a tightly coupled, dynamically loadable collection of classes, jars, and configuration files that explicitly declare their external dependencies (if any).
Following are the life cycle states of OSGI:
Installed: The bundle has been successfully installed.
Resolved: All Java classes that the bundle needs are available. This state indicates that the bundle is either ready to be started or has stopped.
Starting: The bundle is being started, the BundleActivator.start method will be called, and this method has not yet been returned. When the bundle has an activation policy, the bundle will remain in the STARTING state until the bundle is activated according to its activation policy.
Active: The bundle has been successfully activated and is running; its Bundle Activator start method has been called and returned.
Stopping: The bundle is being stopped. The BundleActivator.stop method has been called but the stop method has not yet returned.
Uninstalled: The bundle has been uninstalled. It cannot move into another state.
parsys: It is called the “Paragraph System” component in which you can add other components at the page level.
iparsys: It is an inherited paragraph system, which inherits the parent page “paragraph system”.
It is a workflow component that can be found at this is used for calling a java class in the workflow.
Versions of CQ before 5.5 were based on a servlet container (CQSE, by default, though others could be used) running with multiple web apps: One for the CRX content repository and one for the OSGi container which itself contained Sling and AEM. The Sling web app was bound to the root and handled most of the request processing.
The dispatcher is a CQ5 caching and/or load balancing tool. The dispatcher also helps to protect your AEM server from attack. It caches responses from publishing instances, to increase the responsiveness and security of your externally facing published website
Replication is the process of activating/publishing the page from Author Instance to Process Instance.
[Related Article: Adobe (AEM) CQ5 System Administrator Interview Questions]
Steps involved in replication:
Phrases (Paragraph System):
Multi-Site Manager (MSM) enables you to easily manage multiple websites that share common content. MSM lets you define relations between the sites so that content changes in one site are automatically replicated in other sites. For example, websites are often provided in multiple languages for international audiences. When the number of sites in the same language is low (three to five), a manual process for synchronizing content across sites is possible. However, as soon as the number of sites grows or when multiple languages are involved, it becomes more efficient to automate the process.
Step 1: Copy /libs/foundation/components/page/dialog node to template component’s node
Step 2: Modify dialog node
You can check available script engines for rendering by accessing the URL
Live Copy: Copy created from an existing site or blueprint is called Live Copy. Rollout configurations for this Live Copy can be configured from the tool's console.
Language Copy: A site that is created using a language tool is called a Language copy. Basically to create a site for different languages.
The persistence manager saves the repository content to a permanent storage solution, such as the file system or a database. By default, CRX saves repository content to the Tar persistence manager. Following DB’s can be used for storing content – DB2, Oracle, SQL Server, MySQL.
I assume this is the import tag of the Standard Tag Library. This tag is documented and does not know about Sling directly.
sling:include path=”trail” resourceType=”foundation/components/breadcrumb”
This is the include tag of the Sling JSP Tag library. This tag knows about Sling and also supports RequestDispatcherOptions.
cq:include path=”trail” resourceType=”foundation/components/breadcrumb” or cq:include script=”redirect.jsp”
This tag is a Communique-specific extension of the Sling JSP Tag library include tag. IIRC supports callings scripts in addition to just including renderings of resources. In a Communiqué application, I would suggest generally use the Communique or Sling include tag since this provides you more Sling support. You may use the JSTL import tag if you don’t have specific requirements for Sling extended features, plan to use the JSP (fragment) outside of Communique, or if you want to further process the generated (imported) content with a reader or a variable.
To connect to an external DB, a connection pool needs to be configured by creating a node of type sling: OsgiConfig. The below screenshot is for connecting to the SQL database, but if you want to connect to another DB then properties values need to be changed accordingly:
Use the below code to get a connection:
DataSourcePool dspService = sling.getService(DataSourcePool.class); DataSource ds = (DataSource) dspService.getDataSource(“hsqldbds”);
The DAM allows you to create renditions of an image that include different sizes and versions of the same asset. You can use those renditions in the content of your website, and that can be helpful when you need to create thumbnails or smaller views of large, high-resolution images.
When you are creating multi-device websites where Internet bandwidth is a varying concern, this feature becomes even more important. After all, you want to minimize the size of any files a site visitor has to download to view your site. Making your site load faster improves your search engine optimization and the user experience.
CQ5 is a java based content management system from adobe, previously Day CQ5
It is based on a content repository(i.e it uses a content repository to store the content of a website) and uses JCR(Java content repository) specification to access the content repository.
It uses RESTfulApache Sling framework to map request URL to the corresponding node in the content repository
It uses a powerful OSGi framework internally to allow modular application development. It means individual pieces of your application(called bundles in terms of OSGi) can be independently started and stopped.
CQ5 uses Apache Felix as the OSGi container. Therefore different parts of cq5 can be independently started and stopped. Why a content management system is required? Some websites are very dynamic in nature, content needs to be updated frequently, so it is easier to manage the content of such websites using a CMS.
Advantages of CQ5 over other CMS:
Cq5 uses the following technologies :
A Content repository is basically a place where digital content is stored. Generally, the structure of the content repository is hierarchical and represented as a tree structure where each node of the tree is used to store content. Java Content Repository is a specification provided by the Java community to access the content repository in a uniform way (platform-independent and vendor-independent way). The specification was initially released as JSR-170(JCR 1.0) and then later revised version 2 as (JCR-283).The java. JCR API provides the various classes and interfaces to access a content repository.
REST stands for Representational State Transfer. REST-style architectures consist of clients and servers. Clients initiate requests to servers; servers process requests and return appropriate responses. Requests and responses are built around the transfer of representations of resources.
A resource can be essentially any coherent and meaningful concept that may be addressed. A representation of a resource is typically a document that captures the current or intended state of a resource. Apache Sling is a RESTful framework to access a java content repository over HTTP protocol.
A dispatcher is a CQ5 tool for caching and load-balancing. It has 2 responsibilities.
Reverse replication is used to get user content generated on a publish instance back to the author instance. To do this you need a reverse replication agent in the author environment. This acts as the active component to collect information from the outbox in the publish environment.
Dialog is a key element of your component as they provide an interface for authors to configure and provide input to that component. The user input will be stored at the page level.
Design dialog will share the content at the template level. Also, we can dynamically change the content in design mode.
This is managed by the Sling Management Console of CQ5.
CQ5 CRX is pre-loaded to run within a cluster, even when running a single instance. Hence the configuration of multi-node clusters with little effort happens in CQ5.
Servlet Engine pretends as a server within which each CQ (and CRX if used) instance runs. Even though you can run CQ WCM without an application server, always a Servlet Engine is needed.
In CQ5 Dispatcher helps to cache and load balance. The main responsibilities are,
For inheriting properties we have to create two components with unique names in the base component dialog. For eg. If you plan to have two rich text areas in the dialog of components that inherit from the base, then you must include two rich text areas with unique names in the base component dialog. In any case, every input field of a dialog must have a unique name, else they will point to the same property path relative to the JCR: content node of the component when used on a page.
You can always limit who can access certain folders in CQ Digital Assets by making the folder part of a CUG(closed user group).Steps to make a folder part of a CUG:
OSGi bundles are jar files with metadata inside. Much of this metadata is in the jar’s manifest, found at META-INF/MANIFEST.MF. This metadata, when read by an OSGi runtime container, is what gives the bundle its power.
With OSGi, just because a class is public doesn’t mean you can get to it. All bundles include an export list of package names, and if a package isn’t in the export list, it doesn’t exist in the outside world. This allows developers to build an extensive internal class hierarchy and minimize the surface area of the bundle’s API without abusing the notion of package-private visibility. A common pattern, for instance, is to put interfaces in one package and implementations in another and only export the interface package.
All OSGi bundles are given a version number, so it’s possible for an application to simultaneously access different versions of the same bundle (eg: JUnit 3.8.1 and JUnit 4.0.). Since each bundle has its own classloader, both bundle classes can coexist in the same JVM.
OSGi bundles declare which other bundles they depend upon. This allows them to ensure that any dependencies are met before the bundle is resolved. Only resolved bundles can be activated. Because bundles have versions, versioning can be included in the dependency specification, so one bundle can depend on version JUnit version 3.8.1 and another bundle depends on JUnit version 4.0.
In the OSGi bundle, there will be an Activator.java class in OSGi which is an optional listener class to be notified of bundle start and stop events.
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|Adobe CQ5 System Administrator Training||Adobe Experience Manager Training|
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