migrate to Titan 0.3.0
diff --git a/src/main/java/net/onrc/onos/util/GraphDBConnection.java b/src/main/java/net/onrc/onos/util/GraphDBConnection.java
index ee50cd0..01b22ae 100644
--- a/src/main/java/net/onrc/onos/util/GraphDBConnection.java
+++ b/src/main/java/net/onrc/onos/util/GraphDBConnection.java
@@ -2,10 +2,18 @@
 
 import java.util.Set;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.esotericsoftware.minlog.Log;
 import com.thinkaurelius.titan.core.TitanFactory;
 import com.thinkaurelius.titan.core.TitanGraph;
 import com.tinkerpop.blueprints.Vertex;
 import com.tinkerpop.blueprints.TransactionalGraph.Conclusion;
+import com.tinkerpop.blueprints.util.wrappers.event.EventGraph;
+import com.tinkerpop.blueprints.util.wrappers.event.EventTransactionalGraph;
+import com.tinkerpop.blueprints.util.wrappers.event.EventTransactionalIndexableGraph;
+import com.tinkerpop.blueprints.util.wrappers.event.listener.GraphChangedListener;
 import com.tinkerpop.frames.FramedGraph;
 
 public class GraphDBConnection {
@@ -13,9 +21,17 @@
 		COMMIT,
 		ROLLBACK
 	}
+	public enum GenerateEvent {
+		TRUE,
+		FALSE
+	}
+	protected static Logger log = LoggerFactory.getLogger(GraphDBConnection.class);
 	private static GraphDBConnection singleton = new GraphDBConnection( );
 	private static TitanGraph graph;
+	private static EventTransactionalGraph<TitanGraph> eg;
 	private static GraphDBUtils utils;
+	private static String configFile;
+
 	   
 	   /* A private Constructor prevents any other 
 	    * class from instantiating.
@@ -23,9 +39,14 @@
 	   private GraphDBConnection(){ }
 	   
 	   /* Static 'instance' method */
-	   public static GraphDBConnection getInstance(String conf) {
-		   if (graph == null||graph.isOpen() == Boolean.FALSE) {
-		        graph = TitanFactory.open(conf);		        
+	   public static GraphDBConnection getInstance(final String conf) {
+		   if (GraphDBConnection.configFile == null || GraphDBConnection.configFile.isEmpty()) {
+			   GraphDBConnection.configFile = conf;
+			   log.debug("GraphDBConnection::Setting Config File {}", GraphDBConnection.configFile);
+		   }
+		   if (!GraphDBConnection.configFile.isEmpty() && 
+				   (graph == null||graph.isOpen() == Boolean.FALSE)) {
+		        graph = TitanFactory.open(GraphDBConnection.configFile);		        
 		        // FIXME: Creation on Indexes should be done only once
 		        Set<String> s = graph.getIndexedKeys(Vertex.class);
 		        if (!s.contains("dpid")) {
@@ -44,8 +65,9 @@
 		        	graph.createKeyIndex("flow_entry_id",
 						     Vertex.class);
 		        }
-		   }
-		   graph.stopTransaction(Conclusion.SUCCESS);
+		        graph.stopTransaction(Conclusion.SUCCESS);
+		        eg = new EventTransactionalGraph<TitanGraph>(graph);
+		   }		   
 		   if (utils == null) {
 			   utils = new GraphDBUtils();
 		   }
@@ -66,6 +88,21 @@
 		   	}
 	   }
 	   
+	   protected EventTransactionalGraph<TitanGraph> getEventGraph() {
+		   
+		   	if (isValid()) {		   		
+		   		return eg;
+		   	} else {
+		   		return null;
+		   	}
+	   }
+	   
+	   public void addEventListener(final LocalGraphChangedListener listener) {		   
+		   EventTransactionalGraph<TitanGraph> eg = this.getEventGraph();
+		   eg.addListener(listener);
+		   log.debug("Registered listener {}",listener.getClass());
+	   }
+	   
 	   public Boolean isValid() {
 		   
 		   return (graph != null||graph.isOpen());
@@ -78,14 +115,33 @@
 	   public void endTx(Transaction tx) {
 		   switch (tx) {
 		   case COMMIT:
-			   graph.stopTransaction(Conclusion.SUCCESS);
+			   eg.stopTransaction(Conclusion.SUCCESS);
 		   case ROLLBACK:
-			   graph.stopTransaction(Conclusion.FAILURE);
+			   eg.stopTransaction(Conclusion.FAILURE);
 		   }
 	   }
 	   
+	   public void endTx(Transaction tx, GenerateEvent fire) {
+
+		   try {
+			if (fire.equals(GenerateEvent.TRUE)) {
+				   switch (tx) {
+				   case COMMIT:
+					   eg.stopTransaction(Conclusion.SUCCESS);
+				   case ROLLBACK:
+					   eg.stopTransaction(Conclusion.FAILURE);
+				   }
+			   } else {
+					endTx(tx);   			   
+			   }
+		} catch (Exception e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		}
+	   }
+	   
 	   public void close() {
-		   graph.stopTransaction(Conclusion.SUCCESS);
+		   graph.shutdown();
 	   }
 	   
 }
diff --git a/src/main/java/net/onrc/onos/util/GraphDBUtils.java b/src/main/java/net/onrc/onos/util/GraphDBUtils.java
index c43434f..a3d106c 100644
--- a/src/main/java/net/onrc/onos/util/GraphDBUtils.java
+++ b/src/main/java/net/onrc/onos/util/GraphDBUtils.java
@@ -15,8 +15,9 @@
 import com.thinkaurelius.titan.core.TitanGraph;
 import com.tinkerpop.blueprints.Vertex;
 import com.tinkerpop.blueprints.util.wrappers.event.EventGraph;
+import com.tinkerpop.blueprints.util.wrappers.event.EventTransactionalGraph;
 import com.tinkerpop.frames.FramedGraph;
-import com.tinkerpop.frames.FramedVertexIterable;
+import com.tinkerpop.frames.structures.FramedVertexIterable;
 import com.tinkerpop.gremlin.java.GremlinPipeline;
 
 public class GraphDBUtils implements IDBUtils {
@@ -45,16 +46,6 @@
 	}
 
 	@Override
-	public ISwitchObject searchActiveSwitch(GraphDBConnection conn, String dpid) {
-	    ISwitchObject sw = searchSwitch(conn, dpid);
-	    if ((sw != null) &&
-		sw.getState().equals(SwitchState.ACTIVE.toString())) {
-		return sw;
-	    }
-	    return null;
-	}
-
-	@Override
 	public IDeviceObject searchDevice(GraphDBConnection conn, String macAddr) {
 		// TODO Auto-generated method stub
 		FramedGraph<TitanGraph> fg = conn.getFramedGraph();	
@@ -89,9 +80,9 @@
 	
 	@Override
 	public void removePort(GraphDBConnection conn, IPortObject port) {
-//		FramedGraph<TitanGraph> fg = conn.getFramedGraph();	
-		EventGraph<TitanGraph> eg = conn.getEventGraph();
-		eg.removeVertex(port.asVertex());		
+		FramedGraph<TitanGraph> fg = conn.getFramedGraph();	
+//		EventGraph<TitanGraph> eg = conn.getEventGraph();
+		fg.removeVertex(port.asVertex());		
 	}
 
 	@Override
@@ -213,4 +204,10 @@
 		}
 		return inactiveSwitches;
 	}
+
+	@Override
+	public ISwitchObject searchActiveSwitch(GraphDBConnection conn, String dpid) {
+		// TODO Auto-generated method stub
+		return null;
+	}
 }
diff --git a/src/main/java/net/onrc/onos/util/LocalGraphChangedListener.java b/src/main/java/net/onrc/onos/util/LocalGraphChangedListener.java
new file mode 100644
index 0000000..ac819f9
--- /dev/null
+++ b/src/main/java/net/onrc/onos/util/LocalGraphChangedListener.java
@@ -0,0 +1,7 @@
+package net.onrc.onos.util;
+
+import com.tinkerpop.blueprints.util.wrappers.event.listener.GraphChangedListener;
+
+public interface LocalGraphChangedListener extends GraphChangedListener {
+
+}
diff --git a/src/main/java/net/onrc/onos/util/LocalTopologyEventListener.java b/src/main/java/net/onrc/onos/util/LocalTopologyEventListener.java
index 186ba58..61f227d 100644
--- a/src/main/java/net/onrc/onos/util/LocalTopologyEventListener.java
+++ b/src/main/java/net/onrc/onos/util/LocalTopologyEventListener.java
@@ -1,10 +1,6 @@
 package net.onrc.onos.util;
 
-import net.floodlightcontroller.core.INetMapTopologyObjects.IFlowEntry;
-import net.floodlightcontroller.core.INetMapTopologyObjects.IFlowPath;
 import net.floodlightcontroller.core.INetMapTopologyObjects.IPortObject;
-import net.floodlightcontroller.linkdiscovery.internal.TopoLinkServiceImpl;
-import net.floodlightcontroller.util.FlowPath;
 import net.onrc.onos.flow.FlowManagerImpl;
 import net.onrc.onos.flow.IFlowManager;
 
@@ -15,12 +11,15 @@
 import com.tinkerpop.blueprints.Direction;
 import com.tinkerpop.blueprints.Edge;
 import com.tinkerpop.blueprints.Vertex;
-import com.tinkerpop.blueprints.util.wrappers.event.listener.GraphChangedListener;
 
-public class LocalTopologyEventListener implements GraphChangedListener {
+public class LocalTopologyEventListener implements LocalGraphChangedListener {
 	
 	protected static Logger log = LoggerFactory.getLogger(LocalTopologyEventListener.class);
-	protected static GraphDBConnection conn = GraphDBConnection.getInstance("");
+	protected static GraphDBConnection conn;
+	
+	public LocalTopologyEventListener(GraphDBConnection conn) {
+		LocalTopologyEventListener.conn = conn;		
+	}
 
 	@Override
 	public void edgeAdded(Edge arg0) {
@@ -28,11 +27,6 @@
 		// Convert this Event into NetMapEvent (LinkAdded, FlowEntryEnabled, HostAttached, PortEnabled)
 	}
 
-	@Override
-	public void edgePropertyChanged(Edge arg0, String arg1, Object arg2) {
-		// TODO Auto-generated method stub
-        // Generate State change events on edges too
-	}
 
 	@Override
 	public void edgePropertyRemoved(Edge arg0, String arg1, Object arg2) {
@@ -71,22 +65,40 @@
 	}
 
 	@Override
-	public void vertexPropertyChanged(Vertex arg0, String arg1, Object arg2) {
-		// TODO Auto-generated method stub
-		
-
-	}
-
-	@Override
 	public void vertexPropertyRemoved(Vertex arg0, String arg1, Object arg2) {
 		// TODO Auto-generated method stub
 
 	}
 
 	@Override
-	public void vertexRemoved(Vertex arg0) {
+	public void vertexRemoved(Vertex vertex) {
 		// TODO Auto-generated method stub
+		// Generate NetMapEvents 
+		String type = (String) vertex.getProperty("type");
+		log.debug("TopologyEvents: Received vertex removed event: {}",vertex.toString());
+		if (type.equals("port")) {
+			// port is removed...lets fire reconcile here directly for now
+			
+			IPortObject src_port = conn.getFramedGraph().frame(vertex, IPortObject.class);
+			log.debug("TopologyEvents: Port removed: {}:{}",src_port.getSwitch().getDPID(),src_port.getNumber());
+			IFlowManager manager = new FlowManagerImpl();
+			manager.reconcileFlows(src_port);			
+		}
+	}
 
+
+	@Override
+	public void edgePropertyChanged(Edge arg0, String arg1, Object arg2,
+			Object arg3) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	@Override
+	public void vertexPropertyChanged(Vertex arg0, String arg1, Object arg2,
+			Object arg3) {
+		// TODO Auto-generated method stub
+		
 	}
 
 }