public void activateOptions()

in src/main/java/org/apache/log4j/receivers/net/JMSReceiver.java [186:241]
45 lines of code
9 McCabe index (conditional complexity)

  public void activateOptions() {
    if (!isActive()) {
      try {
        remoteInfo = topicFactoryName + ":" + topicName;

        Context ctx = null;
        if (jndiPath == null || jndiPath.equals("")) {
                ctx = new InitialContext();
        } else {
                FileInputStream is = new FileInputStream(jndiPath);
                Properties p = new Properties();
                p.load(is);
                is.close();
                ctx = new InitialContext(p);
        }

        // give some more flexibility about the choice of a tab name
        providerUrl = (String)ctx.getEnvironment().get(Context.PROVIDER_URL);
        TopicConnectionFactory topicConnectionFactory;
        topicConnectionFactory = 
          (TopicConnectionFactory) lookup(ctx, topicFactoryName);
        
        if (userId != null && password != null) {
          topicConnection =
    	       topicConnectionFactory.createTopicConnection(userId, password);
        } else {
          topicConnection =
    	       topicConnectionFactory.createTopicConnection();
        }
  	       
        TopicSession topicSession =
          topicConnection.createTopicSession(false, Session.AUTO_ACKNOWLEDGE);
  
        Topic topic = (Topic)ctx.lookup(topicName);
  
        TopicSubscriber topicSubscriber = topicSession.createSubscriber(topic);
      
        topicSubscriber.setMessageListener(this);
 
        topicConnection.start();
 
        setActive(true);
      } catch(Exception e) {
        setActive(false);
        if (topicConnection != null) {
          try {
            topicConnection.close();
          } catch (Exception e2) {
            // do nothing
          }
          topicConnection = null;
        }
        getLogger().error("Could not start JMSReceiver.", e);
      }
    }
  }