diff --git a/propelgraph-neo4j/src/main/java/org/propelgraph/neo4j/Neo4jLocatableGraphFactory.java b/propelgraph-neo4j/src/main/java/org/propelgraph/neo4j/Neo4jLocatableGraphFactory.java
index 566d61a..0b884a4 100644
--- a/propelgraph-neo4j/src/main/java/org/propelgraph/neo4j/Neo4jLocatableGraphFactory.java
+++ b/propelgraph-neo4j/src/main/java/org/propelgraph/neo4j/Neo4jLocatableGraphFactory.java
@@ -15,50 +15,54 @@
 import org.propelgraph.LocatableGraphFactoryFactoryImpl;
 import org.propelgraph.LocatableGraphFactory;
 import org.propelgraph.DeleteableGraphFactory;
+import org.propelgraph.UnsupportedFActionException;
 import com.tinkerpop.blueprints.Graph;
 import com.tinkerpop.blueprints.Vertex;
 import com.tinkerpop.blueprints.impls.neo4j.Neo4jGraph;
 
+
 public class Neo4jLocatableGraphFactory implements LocatableGraphFactory, DeleteableGraphFactory {
-    static final String PREFIX = LocatableGraphFactory.SCHEME_PGGRAPH+":"+Neo4jLocatableGraphFactory.class.getName()+"/?";
+	static final String PREFIX = LocatableGraphFactory.SCHEME_PGGRAPH+":"+Neo4jLocatableGraphFactory.class.getName()+"/?";
+
+	@Override
+	public void delete(String urlPath) {
+		if (!urlPath.startsWith(PREFIX)) throw new RuntimeException("unsupported urlPath: "+urlPath);
+		int idx0 = PREFIX.length();
+		String graphname = LocatableGraphFactoryFactoryImpl.parseForURLParameter("&graphname=", urlPath);
+		String hostname = null;	// hostname = byLocatableGraphFactoryFactoryImpl.parseForURLParameter("&hostname=", urlPath);
+		try {
+			Runtime.getRuntime().exec("rm -Rf neo4jstores/"+graphname+"/");
+		} catch (Exception exc) {
+			throw new RuntimeException(exc);
+		}
+	}
 
-        @Override
-	    public void delete(String urlPath) {
-	    if (!urlPath.startsWith(PREFIX)) throw new RuntimeException("unsupported urlPath: "+urlPath);
-	    int idx0 = PREFIX.length();
-	    String graphname = LocatableGraphFactoryFactoryImpl.parseForURLParameter("&graphname=", urlPath);
-	    String hostname = null; // hostname = byLocatableGraphFactoryFactoryImpl.parseForURLParameter("&hostname=", urlPath);
-	    try {
-		Runtime.getRuntime().exec("rm -Rf neo4jstores/"+graphname+"/");
-	    } catch (Exception exc) {
-		throw new RuntimeException(exc);
-	    }
-        }
 
-        @Override
-	    public Graph create(String urlPath) {
-	    if (!urlPath.startsWith(PREFIX)) throw new RuntimeException("unsupported urlPath: "+urlPath);
-	    int idx0 = PREFIX.length();
-	    String graphname = LocatableGraphFactoryFactoryImpl.parseForURLParameter("&graphname=", urlPath);
-	    String hostname = null; // hostname = byLocatableGraphFactoryFactoryImpl.parseForURLParameter("&hostname=", urlPath);
-	    try {
-		File fiDirGraph = new File("neo4jstores/"+graphname);
-		boolean boolAlreadyExists = fiDirGraph.exists();
-		Neo4jGraph g = new Neo4jGraph(fiDirGraph.getAbsolutePath());
-		if (!boolAlreadyExists) {
-		    g.createKeyIndex("_id", Vertex.class);
-		    //g.createKeyIndex(idPropForPeople, Vertex.class);
+	@Override
+	public Graph open(String urlPath, String faction, String fmode) throws UnsupportedFActionException {
+		if (!urlPath.startsWith(PREFIX)) throw new RuntimeException("unsupported urlPath: "+urlPath);
+		int idx0 = PREFIX.length();
+		String graphname = LocatableGraphFactoryFactoryImpl.parseForURLParameter("&graphname=", urlPath);
+		String hostname = null;	// hostname = byLocatableGraphFactoryFactoryImpl.parseForURLParameter("&hostname=", urlPath);
+		if (!faction.equals(org.propelgraph.LocatableGraphFactory.FACTION_CREATE_OPEN))	throw new UnsupportedFActionException();
+		try {
+			File fiDirGraph = new File("neo4jstores/"+graphname);
+			boolean boolAlreadyExists = fiDirGraph.exists();
+			Neo4jGraph g = new Neo4jGraph(fiDirGraph.getAbsolutePath());
+			if (!boolAlreadyExists) {
+				g.createKeyIndex("_id", Vertex.class);
+				//g.createKeyIndex(idPropForPeople, Vertex.class);
+			}
+			return g;
+		} catch (Exception exc) {
+			throw new RuntimeException(exc);
 		}
-		return g;
-	    } catch (Exception exc) {
-		throw new RuntimeException(exc);
-	    }
-        }
+	}
 
-        @Override
-	    public String getGraphURL(Graph graph) {
-	    // we don't know how to determine the graph file being used if all we have is the Graph object
-	    throw new RuntimeException("don't currently support this method");
-        }
+	@Override
+	public String getGraphURL(Graph graph) {
+		// we don't know how to determine the graph file being used if all we have is the Graph object
+		throw new RuntimeException("don't currently support this method");
+	}
 
 }