Numerous kinds of content repositories are provided these days, some of them are Open source like Apache Jackrabbit while others are still closed source and. You could look also at Silverpeas code. It’s using Jackrabbit with some simple code to create nodes, browse them etc. For example take a look. Readers performing this tutorial have just finished an overview of Apache Jackrabbit and the JCR specifications and are looking for examples.
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Tags apache felix jackrabbit osgi sling video. Start with the Examples page. As discussed in the First Hop example, a login with GuestCredentials returns an anonymous read-only tuutorial in the Jackrabbit default configuration.
In this article, I will focus on the document storage flavor, which stores data in document-oriented format. To get questions about the repository and what it supports back we use a method called getDescriptor.
Each JCR session is associated with a workspace that contains a single node tree. The end tutoral is that the method returns a node instance that represents the same content node as the world instance created a few lines earlier.
Getting started The easiest way to get started with Jackrabbit is to download the runnable Standalone Server jar. It is a good practice to properly release all acquired resources, and the JCR sessions are no exception.
Now lets open up our IDE and import this project use whatever you like. A JCR property can contain either a single or multiple values of a given type. If you like, you could even split the example application into three pieces for respectively storing, retrieving, and removing the example content. You can participate by answering questions on the mailing list, filing bug reports for any problems or improvement ideas you come up with, contributing to the Jackrabbit Wiki, or writing documentation and code.
Items or contents in node store are managed in nodes. The following example application first stores some content to the initially empty content repository, then retrieves the stored content and outputs it, and finally removes the stored content.
Just enough to get us a repository built. A session is needed to access any content within a repository. These are two new classes we need for this example. The SimpleCredentials class is a simple implementation of the Credentials interface used for passing explicit user credentials to the Repository.
Apache Jackrabbit – Starting From Scratch
The larger the system that uses the JCR, the more layers of framework are put on top of the product. Notice the results that stream by? Similarly, we can restore a specific version of a content.
This deserializes an XML document and adds the resulting item subgraph as a child of the node at the provided path. Welcome to my world. More substantial content applications could also be written as web spache or EJB components with different setup and error handling patterns. A Jackrabbit repository with a default configuration will create an admin user when it is first initialized. Sign up using Email and Password.
Getting Started with Apache Jackrabbit
Try the hackrabbit graph OLAP database for tutoriao demanding the fastest graph analytics and data management solutions. If you’re up to it, you can also download the Apache Sling source codes. Sign up or log in Sign up using Google. If an incoming node has the same identifier as a node already existing in the workspace then the already existing node and its subgraph is removed from wherever it may be in the workspace before the incoming node is added.
Let’s start with some real code to see how we can create a repository with MongoDB.
java – How to learn using content repository and Apache JackRabbit? – Stack Overflow
This will help get us comfortable with Maven and building out your own project structures. The purpose with this tutorial series is to show off the core features in a JSR compliant way hoping that knowing the standard way you will be less like to use a way that attach you apche a specific product.
Running java classes or jar projects can be quite a chore when we are using Maven as our build tool. Having just basic knowledge of the JCR specification can apacche decisions much more solid on platforms that use it.
Incoming nodes are added in the same way that new node is added with Node. Okey, so it isn’t only me who struggles with getting a grip on it. A File node is a different type of node than the normal node that we created in the above step. Stores, retrieves, and removes example content. The session is used to interact with the repository.
The Node interface is used to manage the content nodes in a repository. The Repository interface contains some constants that can be used to query information using this method. Jackrabbit returns “anonymous” by default.
If the named property already exists, then this method will change the value of that property. The implementation contains a utility feature that will take care of the initial configuration and repository construction when the first session is started. Self explanatory, but this is how we log out of a session. The method removes the entire content subtree, so we only need to remove the topmost “hello” apach to get rid of all the content we added before.
We talk about in class that the standard flow of calling the JCR revolves around:. The jackrabbt way to get started with Jackrabbit is to download the runnable Standalone Server jar.
The SimpleCredentials constructor follows the JAAS convention of representing the username as a normal String, but the password as a character array, so we need to use the String.