Do not load monitoring plugin if enterprise plugin is detected

git-svn-id: http://svn.igniterealtime.org/svn/repos/openfire/branches/openfire_3_5_1@10196 b35dd754-fafc-0310-a699-88a17e54d16e

src/plugins/monitoring/src/java/org/jivesoftware/openfire/plugin/MonitoringPlugin.java

@@ -82,6 +82,13 @@ public class MonitoringPlugin implements Plugin {
     public void initializePlugin(PluginManager manager, File pluginDirectory) {
         System.out.println("Starting Monitoring Plugin");
 
+        // Check that the enterprise plugin is not being used
+        if (manager.getPlugin("enterprise") != null) {
+            // Stop loading this plugin since the enterprise is being used
+            System.out.println("Enterprise plugin found. Stopping Monitoring Plugin");
+            throw new IllegalStateException("This plugin cannot run next to the Enterprise plugin");
+        }
+
         shuttingDown = false;
 
         // Make sure that the enteprise folder exists under the home directory