import javax.naming.*;
import javax.naming.directory.*;
import java.util.Hashtable;

/**
  * Demonstrates how to create a referral entry.
  *
  * usage: java CreateReferral
  */
class CreateReferral {
    public static void main(String[] args) {

	// Set up environment for creating initial context
	Hashtable env = new Hashtable(11);
	env.put(Context.INITIAL_CONTEXT_FACTORY, 
	    "com.sun.jndi.ldap.LdapCtxFactory");
	env.put(Context.PROVIDER_URL, "ldap://localhost:489/o=JNDITutorial");

	// Set referral property; optional because "ignore" is the default
	env.put(Context.REFERRAL, "ignore");

	// Uncomment this line when using 1.0.1 
	// env.put("java.naming.ldap.control.manageReferral", "true");

	try {
	    // Create the initial context
	    DirContext ctx = new InitialDirContext(env);

	    // The object classes
	    Attribute objclass = new BasicAttribute("objectclass");
	    objclass.add("top");
	    objclass.add("referral");
	    objclass.add("extensibleObject"); // so that we can use cn as name

	    // The referral itself
	    Attribute ref = new BasicAttribute("ref",
		"ldap://localhost:389/cn=J. Duke, ou=NewHires, o=JNDITutorial");

	    // The name
	    Attribute cn = new BasicAttribute("cn", "NewReferral");

	    // Create attributes to be associated with the new context
	    Attributes attrs = new BasicAttributes(true); // case-ignore
	    attrs.put(objclass);
	    attrs.put(ref);
	    attrs.put(cn);

	    // Create the context
	    Context result = ctx.createSubcontext("cn=NewReferral", attrs);

	} catch (NamingException e) {
	    System.out.println("Create failed: " + e);
	}
    }
}