protected Interceptor ensureInterceptor( String n )
    {
        Interceptor i = null;
        if ( _interceptors == null )
        {
            _interceptors = new HashMap<String,Interceptor>();
        }
        else
        {
            i = _interceptors.get( n );
        }

        if ( i == null )
        {
            try
            {
                i  = (Interceptor) getControlService( getControlBeanContext().getClassLoader().loadClass( n ), null );
            }
            catch ( Exception e )
            {
                // Couldn't instantiate the desired service; usually this is because the service interface itself
                // isn't present on this system at runtime (ClassNotFoundException), or if the container of the
                // control didn't registers the service.

                /* TODO log a message here to that effect, but just swallow the exception for now. */
            }
            finally
            {
                // We want to always return an interceptor, so if we can't get the one we want, we'll substitute
                // a "null" interceptor that does nothing.
                if ( i == null)
                    i = new NullInterceptor();

                _interceptors.put( n, i );
            }
        }
        return i;
    }
protected Interceptor ensureInterceptor ( String n ) { Interceptor i = null ; if ( _interceptors == null ) { _interceptors = new HashMap < String , Interceptor > ( ) ; } else { i = _interceptors . get ( n ) ; } if ( i == null ) { try { i = ( Interceptor ) getControlService ( getControlBeanContext ( ) . getClassLoader ( ) . loadClass ( n ) , null ) ; } catch ( Exception e ) { } finally { if ( i == null ) i = new NullInterceptor ( ) ; _interceptors . put ( n , i ) ; } } return i ; }
Retrieves interceptor instances, creates them lazily.