AEM Node API

Sling provide a capability to adapting a resource with the help of adaptTo() method from Adaptable interface.

Node interface belongs to javax.jcr.Node package

Using below statement we can adapt resource to Node class.

Node node = resource.adaptTo(Node.class);

We can get node from session object which belongs to javax.jcr package using below statement:

Session session = resourceResolver.adaptTo(Session.class);
try {
    Node node = session.getNode("/content/practice/us/en/test");
    logger.error(">>>>> node.getName() = '{}'", node.getName());
    logger.error(">>>>> node.getPath() = '{}'", node.getPath());
} catch (RepositoryException e) {
    e.printStackTrace();
}

OUTPUT
>>>>> node.getName() = ‘test’
>>>>> node.getPath() = ‘/content/practice/us/en/test’

Get Node name and path

we can get node path and name with the help of getPath() and getName() method from node interface.

OUTPUT
>>>>>>>>>>> node.getName() = ‘test’
>>>>>>>>>>> node.getPath() = ‘/content/practice/us/en/test’

Below are the methods from Node class.

OUTPUT
>>>>>>>>>>> node.hasProperty(jcr:title) = ‘true’
>>>>>>>>>>> node.getIndex() = ‘1’
>>>>>>>>>>> node.hasProperties() = ‘true’
>>>>>>>>>>> node.isLocked() = ‘false’
>>>>>>>>>>> node.hasNodes() = ‘true’
>>>>>>>>>>> node.isNode() = ‘true’
>>>>>>>>>>> node.hasNode(root) = ‘true’

Node Properties

Use below code snippet to access node properties.

PropertyIterator properties = node.getProperties();
while (properties.hasNext()) {
    Property property = properties.nextProperty();
}

Add Node

node.addNode(“<node_name>”) method will add node and session.save() will help to persist node in AEM instance.

It is important to write once CRUD operations are done as it helps us to persist changes in AEM instance.

node.setProperty("practiceDesc", "This is Practice description.");logger.error(">>>>  node.getProperty(practiceDesc) = '{}'", node.getProperty("practiceDesc"));

Node customNode = node.addNode("custom");session.save();
session.logout();

OUTPUT

Added practiceDesc property in jcr:content node

Custom node added inside jcr:content node.

Remove Node

node.remove() will remove node.

node.remove();
session.save();

OUTPUT

Below are the scenarios for node before and after delete

Before Delete

After Delete