Category: Java use api in sightly

Java use api in sightly

By submitting your feedback, you accept the Adobe Terms of Use. Show Menu. You can programmatically modify nodes and properties located within the Adobe CQ repository, which is part of the Adobe Marketing Cloud. Create a Repository instance Although there are different ways to connect to a repository and establish a connection, this development article uses a static method that belongs to the org.

JcrUtils class.

How to programmatically access the AEM JCR

The name of the method is getRepository. The getRepository method returns a Repository instance, as shown in the following code example. You use the Repository instance to establish a session with the repository. SimpleCredentials object. The login method returns a javax. Session instance. You create a SimpleCredentials object by using its constructor and passing the following string values:.

The following code shows how to call the login method that returns a javax. Create a Node instance Use a Session instance to create a javax. Node instance. A Node instance lets you perform node operations. For example, you can create a new node. To create a node that represents the root node, invoke the Session instance's getRootNode method, as shown in the following line of code. Once you create a Node instance, you can perform tasks such as creating another node and adding a value to it.

For example, the following code creates two nodes and adds a value to the second node.

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Consider the node structure created in the previous code example. A node is assigned a data value and then the value of the node and its path is written out to the console. When you are done with the Session, be sure to log out. After you run the full code example and create the nodes, you can view the new nodes in the CRXDE Liteas shown in the following illustration.In this article, we will talk about the best technology of the interaction between software and test it on the most popular language for creating software.

Java is one of the most popular programming languages in the world. APIs allows us to skip diving deeply in the source code of some third-side software while allowing us to use their privileges fast and easy. Furthermore, APIs should have documentation that explains all endpoints, types of returned values, etc. After you find an interesting API and read documentation, you have to send a request — one single task for the server receiving side.

HTL Scripting Engine

There are many different types of requests that API could handle, but here are the most used ones:. This is the style of software communication that helps a client to get the required data in the well-state for representation REST — representational state transfer.

All that is required — a bunch of the architectural constraints:. Also, you should have a Maven package builder for easy installing and using site-packages. Other than that, we will only need the Unirest library for making requests with no problems and in a few lines. Looks pretty difficult, right? Especially InputStream as a type of returned value it should be further processed.

You can use Unirest with the help of Maven, then create a Java Maven project and find the pom. More detailed info about dependencies may be found here. Now you can build your project by next command in terminal be careful, use it only in the main folder, because pom. Sometimes it is difficult to find free and useful API for testing purposes.

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Here you can test your programming skills, build useful apps, and even create your own APIs. If you want to try some free APIs without credit card instead, browse this collection. On the right side, you can see the snippet part, where developers show how to connect to this API with any supported language. All other params are depending on concrete endpoint. Look on the left side of the main page. Return to your code and import the next things:.

Here we import URLEncoder for preparing params to be sent, and 3 required objects from the Unirest library:. You should handle all warnings and errors for improving the project. After making a request and handling its response by the HttpResponse object, we can see the result. First println shows the status code of the response — a short number that explains the situation with our requested actions.

The problem is that default JsonNode object prints data in a single row, which is rather difficult to understand. Modify your pom. These objects will help us in pretty-print our JSON.

Sightly Pagination Component using Sling Model and JavaScript Use API in AEM 6.1

Okay, now we can call the endpoint and get a response:. Next step is to read it in the BufferedImage object — dynamic image in the memory of the program. This should output the following:. APIs are a set of definitions and protocols that allow technology products and services to communicate with each other.

JSON or JavaScript Object Notation is an encoding scheme that is designed to eliminate the need for an ad-hoc code for each application to communicate with servers that communicate in a defined way.

JSON API module exposes an implementation for data stores and data structures, such as entity types, bundles, and fields. Check out our medium team page here. Your email address will not be published. Register Now.My lack of understanding of the technology behind the API made it seem really limited. The intent of this article is to clear up that confusion and give some examples of how to take advantage of this new feature. Behind the scenes, AEM has implemented Rhino. So what good does this knowledge give us?

Because our JavaScript will end up being Java, we have Java libraries available to us. When I first started out, I assumed I would need to write a good deal of functionality to get some of the basic features that are available in the Java Use-API. I was really making things hard on myself. This component will be used to display the data we return from our JavaScript file.

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I created two files within the component, example. Here is the initial code: HTML — example. There are a few things to note here. I also define the path to my JavaScript file. The JS sets the scripting mode to strict and calls the use method that accepts a function as a parameter.

The function will contain any code needed for the component. If we are trying to get the jcr:title property we would do one of the following:.

Two objects were available to us from the Use-API, granite. The trick here is that they are not the same type of object. Notice that these are both Java Objects not JavaScript. Remember, in the end, because of Rhino, we are really using Java.

Because these end up being Java Objects, you can rely on the Javadocs for any additional information on how to use them. For example, a JcrPropertyMap has different method signatures for the get method. In JavaScript, I could access properties in different ways using the get method:. In JavaScript, there is no import statement for bringing in additional classes. Instead, to access a class, simply use its classpath.

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In addition to this, the Use-API has some common variables available right off the bat. These are familiar to AEM developers who have used the default global. I recommend jumping in and trying this new feature in a project. Take advantage of all the JavaScript library has; only jumping into the Java world when needed. The Javadocs and Rhino documentation are great resources if you get stuck. Send us an email to info aempodcast.

Also, feel free to check out our interview with Gabriel Walt about Sightly. The following Sling ticket was pointed out to me following the writing of this article: Sling As of the creation of this ticket, there were significant performance hits when using Sightly over JSPs. Performance tests showed JSP running up to 10x faster than Sightly.Apache Software Foundation.

Use interface and the JavaUseProviderwhereas the use function is implemented by the org. A full HTL installation provides the following Use Providers, in the order of their priority the higher the service ranking value, the higher the priority :. The service. However, in order to not affect core functionality the RenderUnitProvider should always have the highest ranking.

The following global objects are available to all Use objects, either as a request attribute or as a property made available in the javax. Bindings map or attached to the this context of the use function:. Depending on the implementation the above code would either load the implementation with the highest service ranking of Model3 if org.

Model3 is an interface, or would load the model org. Model3 if this is a concrete implementation. It's important to note that this use provider will only load models that are adaptable from SlingHttpServletRequest or Resource. Passed parameters will be made available to the Sling Model as request attributes.

Assuming the following markup:. When objects are backed by Resources the Java Use Provider will automatically handle the compilation of these classes. The advantage of loading a bean using just the simple class name e. In this case the package name of the PageBean class will automatically be derived from the calling script's parent path e. However, keep in mind that loading a bean this way is slower than providing the fully qualified class name, since the provider has to check if there is a backing resource.

At the same time, loading an object using its fully qualified class name will not allow overriding it by inheriting components. Passed parameters will be made available to the Use object as request attributes and, if the object implements the org. Use interface, through the javax. Bindings passed to the init method. The JavaScript Use Provider allows loading objects created through the use function, by evaluating scripts passed to data-sly-use.

The JavaScript files are evaluated server-side by the Rhino scripting engine, through the org. Similar to the Java Use Provider, loading the script using a relative path allows inheriting components to overlay just the Use script, without having to also overlay the calling HTL script.

Besides the global objects available to all Use Providers, the JavaScript Use Provider also provides the following global objects available in the context of the use function:. With the exception of the console and use objects, all the other global objects implemented by the JavaScript Use Provider are present in order to support the asynchronous Resource-API implemented by org.

However, this was deprecated starting with version 1. Passed parameters will be made available to the Use object as properties of this. Evaluations of Java objects in JavaScript constructs where the operand is automatically type coerced will work, but Rhino might complain about the Java objects not correctly calling the Rhino helper function Context.

In order to avoid these warnings it's better to explicitly perform your comparisons like in the following example:. The Script Use Provider allows loading objects evaluated by other script engines available on the platform. The following table summarises the pros and cons for each Use Provider, with the obvious exception of the Render Unit Use Provider. Become a Sponsor Buy Stuff.For web developers who need to build robust enterprise websites, the HTML Template Language helps to achieve increased security and development efficiency.

Note: For more on sightly watch this video. Increased Security - The HTML Template Language increases the security of sites that use it in their implementation, as compared to JSP and to most other template systems, because HTL is capable of automatically applying the proper context-aware escaping to all variables being output to the presentation layer.

HTL makes this possible because it understands the HTML syntax, and uses that knowledge to adjust the required escaping for expressions, based on their position in the markup.

This will for instance result in expressions placed in href or src attributes to be escaped differently from expressions placed in other attributes, or elsewhere. While the same result can be achieved with template languages like JSP, there the developer must manually ensure that the proper escaping is applied to each variable.

java use api in sightly

As a single omission or mistake on the applied escaping is potentially sufficient to cause a cross-site scripting XSS vulnerability, we decided to automate this task with HTL. This allows all complex business logic to be encapsulated in the Java code, while the HTL code deals only with direct markup production. Read more. This allows all complex business logic to be encapsulated in the JavaScript code, while the HTL code deals only with direct markup production.

Without having to specify anything, HTL provides access to all objects that were commonly available in JSP after including global.

These objects are in addition to any that may be introduced through the Use-API. These objects provide convenient access to commonly used information.

Their content can be accessed with the dot notation, and they can be iterated-through using data-sly-list or data-sly-repeat. Interview Questions Note: For more on sightly watch this video 1. Simplified Development - The HTML Template Language is easy to learn and its features are purposely limited to ensure that it stays simple and straight-forward. Reduced Costs - Increased security, simplified development and improved team collaboration, translates for AEM projects in reduced effort, faster time to market TTMand lower total cost of ownership TCO.

What are the Use-API in sightly? Use SlingScriptHelper. What is the use of unwrap, element and attribute attribute in sightly? Attribute attribute - Use an array to make things easy. What are the implicit object present in sightly? Enumerable Objects : These objects provide convenient access to commonly used information. Variable Name Description properties List of properties of the current Resource.

java use api in sightly

Backed by org. ValueMap pageProperties List of page properties of the current Page. Component currentDesign com. Design currentPage com. Page request org. SlingHttpServletRequest resource org. Resource resourceDesign com. Design resourcePage com. Page wcmmode com. Difference between Sightly and JSP. Easily development of AEM Projects by front-end developers. Flexible and powerful templating and logic binding features Need to write less code in Sightly thus productivity increases.

java use api in sightly

Wider range of implicit objects as compared to JSP. List of properties of the current Resource. List of page properties of the current Page. List of inherited page properties of the current Page.By submitting your feedback, you accept the Adobe Terms of Use. Show Menu. HTL Block Statements. As with data-sly-unwrap, try to minimize the use of this. Initialize a JavaScript object, where the source file is located in the same directory as the template.

Note that the filename must be used:. Initialize a Java class, where the source file is located in the same directory as the template. Note that the classname must be used, not the file name:.

java use api in sightly

Initialize a Java class, where that class is installed as part of an OSGi bundle. Note that its fully-qualified class name must be used:. Parameters can be passed to the initialization using options. Initialize another HTL template that can then be called using data-sly-call.

Java Use-API. However, this statement should be used sparingly. In general it is better to keep the HTL markup as close as possible to the intended output markup. In other words, when adding HTL block statements, try as much as possible to simply annotate the existing HTML, without introducing new elements.

It is also possible to conditionally unwrap an element:. Both will display the value of jcr:description. Both will set the title. Attributes are resolved left to right, with the rightmost instance of an attribute either literal or defined via data-sly-attribute. Note that an attribute either literal. To set multiple attributes, pass a map object hold key-value pairs corresponding to the attributes and their values.In terms of functionality of this component its very similar to what we have in our AEM Community.

Component will accept two inputs from author, one being title of component and other being path from where it has to read pages. Type of query you want to perform can be easily changed. Now based on the search result it gets, paginations will be created on page. It uses selector based approach, once you click next page or any number you can notice selector will be added on URL.

Sling Model: It adapts the pages as SlingHttprequest thus we can easily retrieve selector parameter. Sightly: As usual its used as View to render everything to user.

Author the two required fields. One is the title displayed on top of page and other being the root page. Once you have submitted that component output can be seen on page. When dialog is submitted request goes to sling model class which adapts itself as SlingHttpServletRequest.

Now this method is very important from implementation point of view. Returned data is put in list with the help of class SimplePage and returned to Sightly File. I have send you the details for code in email, I will check the issue you are facing with code in github. Saturday, April 18, About Us Contact Us. Adobe AEM Club. Replication Agent — A Complete guide July 9, A closer look on AEM6. Assets Translation All Authors.

Human Translation January 4, Translation in AEM 6. Asset share commons January 30, Share on Facebook. Asset share commons. Hi, I have send you the details for code in email, I will check the issue you are facing with code in github. Most Recent. Developers August 16, Asset share commons Customization January 30, AEM 6. Home About Us Contact Us.


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