Quick Notes

How to get a Resource when we have node path:
In Java:
@Reference
private ResourceResolverFactory resourceResolverFactory;
ResourceResolver resolver=null;
resolver = resourceResolverFactory.getAdministrativeResourceResolver(null);
Resource res=null;
res= resolver.getResource("PATH");
In JSP:
Resource res= resourceResolver.getResource("PATH");
How to get a Node, Get node property, Add/Update node property:
Node node = res.adaptTo(Node.class);
Get propoerty:
String prop= node.getProperty("Prop_name").getValue().getString();
String prop = node.setProperty("Prop_name","Value");
Note: Don't forget to save the session when the node is updated.
Update Node using PersistableValueMap:
Resource resource = resolver.getResource("Node Path");
if(resource !=null)
{
PersistableValueMap valueMap= resource.adaptTo(PersistableValueMap.class);
valueMap.put("propname","value");
valueMap.save();
}

Note: PersistableValueMap is deprecated. So use ModifiableValueMap instead.
Example:

if(resource !=null)
{
ModifiableValueMap valueMap= resource.adaptTo(ModifiableValueMap.class);
valueMap.put("propname","value");

}

resource.commit();   //Once ResourceResolver.commit() is called, the changes are finally persisted.

How to get a JackRabbit session in the Workflow:
final JackrabbitSession jackrabbitSession = (JackrabbitSession) wfsession.getSession();
UserManager userManager = jackrabbitSession.getUserManager();


How to get Page object using resolver?
@Reference 
private PageManagerFactory pageManagerFactory;

@Reference 

private ResourceResolverFactory resourceResolverFactory;

ResourceResolver resolver = null;

//get Resource resolver using resource resolver factory.
resolver = resourceResolverFactory
.getAdministrativeResourceResolver(null);

//Get page manager object using page manager Factory
PageManager pmanager = pageManagerFactory.getPageManager(resolver);

//Get page object using PageManager
Page page = pmanager.getContainingPage(path);