question: boolean addRESTRemotePolicyListener ( SSOToken appToken , String serviceName , String notificationURL , boolean reRegister ) { boolean status = false ; if ( debug . messageEnabled ( ) ) { debug . message ( "ResourceResultCache.addRESTRemotePolicyListener():" + "serviceName=" + serviceName + ":notificationURL=" + notificationURL ) ; } if ( remotePolicyListeners . contains ( serviceName ) && ! reRegister ) { if ( debug . messageEnabled ( ) ) { debug . message ( "ResourceResultCache.addRESTRemotePolicyListener():" + "serviceName=" + serviceName + ":notificationURL=" + notificationURL + ":is already registered" ) ; } return status ; } if ( appToken != null ) { try { String policyServiceListenerURL = null ; policyServiceListenerURL = getRESTPolicyServiceListenerURL ( appToken ) ; String rootURL = getRootURL ( notificationURL ) ; if ( debug . messageEnabled ( ) ) { debug . message ( "ResourceResultCache." + "addRESTRemotePolicyListener():" + "serviceName=" + serviceName + ":notificationURL=" + notificationURL + ":rootURL=" + rootURL + ":policyServiceListenerURL=" + policyServiceListenerURL ) ; } Set < String > resourceNames = new HashSet < String > ( ) ; resourceNames . add ( rootURL ) ; String queryString = buildRegisterListenerQueryString ( appToken , serviceName , resourceNames ) ; queryString += "&url=" + URLEncoder . encode ( notificationURL , "UTF-8" ) ; String resourceContent = postForm ( appToken , policyServiceListenerURL , queryString ) ; if ( debug . messageEnabled ( ) ) { debug . message ( "ResourceResultCache." + "addRESTRemotePolicyListener():" + ":resourceContent=" + resourceContent ) ; } status = true ; remotePolicyListeners . add ( serviceName ) ; } catch ( UnsupportedEncodingException e ) { debug . error ( "ResourceResultCache.addRESTRemotePolicyListener():" + "Can not add policy listner" , e ) ; } catch ( SSOException se ) { debug . error ( "ResourceResultCache.addRESTRemotePolicyListener():" + "Can not add policy listner" , se ) ; } catch ( PolicyException pe ) { debug . error ( "ResourceResultCache.addRESTRemotePolicyListener():" + "Can not add policy listner" , pe ) ; } } else { if ( debug . messageEnabled ( ) ) { debug . message ( "ResourceResultCache.addRESTRemotePolicyListener():" + "not adding listener, app sso token is null" ) ; } } return status ; }
target:  Registers a REST listener with policy service to recieve notifications on policy changes