Question

How do I use RMI to connect to CRX repository from CQ 5.6.x from an external application?

 

Answer, Resolution

1. By default, the RMI connection listener is not enabled; in order to enable it has to be   configured.

 

Login to a Configuration Tab in OSGI console: http://host:port/system/console/configMgr. Find "Apache Sling JCR Repository RMI Registrar". Default RMI port is 1099. You need to re-save or change the port value in in order to enable RMI listener.

 

2. The following output into a error.log file indicates that RMI is ready:

*INFO* [CM Event Dispatcher (Fire ConfigurationEvent: pid=org.apache.sling.jcr.jackrabbit.server.RmiRegistrationSupport)] org.apache.sling.jcr.registration Using RMI Registry port 1199

*INFO* [CM Event Dispatcher (Fire ConfigurationEvent: pid=org.apache.sling.jcr.jackrabbit.server.RmiRegistrationSupport)] org.apache.sling.jcr.registration Using private RMI Registry at 1199

*INFO* [CM Event Dispatcher (Fire ConfigurationEvent: pid=org.apache.sling.jcr.jackrabbit.server.RmiRegistrationSupport)] org.apache.sling.jcr.registration Repository bound to //server_name:1199/virtual-crx

 

3. Write a java class that connects to CRX through RMI. Below is a very simple example showing how to login to the CRX and get a Crx Session:

 

import org.apache.jackrabbit.rmi.client.ClientRepositoryFactory;

import javax.jcr.Repository;

import javax.jcr.Session;

import javax.jcr.SimpleCredentials;

public class CRXtoRMI {

       public static void main (String[] args){

              System.out.println("RMI to CRX Test Connection:");

              ClientRepositoryFactory factory = new ClientRepositoryFactory();

              Repository repository;

              String crxApplicationName = "virtual-crx";

              String repoUrl = "//localhost:1199/"+crxApplicationName;

              String workspace = "crx.default";

              String username = "admin";

              char [] password = "admin".toCharArray();

              try {

                     repository = factory.getRepository(repoUrl);

                     Session s = repository.login(new SimpleCredentials(username,password), workspace);

                     System.out.println("Workspace: " + s.getWorkspace().getName());

                     System.out.println("userId: "+s.getUserID());

              } catch (Exception e) {

                     e.printStackTrace();

              }

       }

}

 

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