Set default window manager (i3) in OpenSuse

Question

I am quite new with neo4j and currently using Neo4jRestNet Client. I created a small network for purpose of learning:

private static void GenerateNetwork()
        {
            var rootNode = Node.GetRootNode();

            // Create a User Node with Properties
            var prop = new Properties();
            prop.SetProperty(NodeProperty.Name.ToString(), "Madeline J. Parnell");
            prop.SetProperty(NodeProperty.Age.ToString(), "25");
            prop.SetProperty(NodeProperty.LivesIn.ToString(), "LA");

            var nodeUserWithName1 = Node.CreateNode(NodeType.Person.ToString(), prop);

            prop = new Properties();
            prop.SetProperty(NodeProperty.Name.ToString(), "Jack S. Waldrop");
            prop.SetProperty(NodeProperty.Age.ToString(), "28");
            prop.SetProperty(NodeProperty.LivesIn.ToString(), "San Francisco");

            var nodeUserWithName2 = Node.CreateNode(NodeType.Person.ToString(), prop);

            prop = new Properties();
            prop.SetProperty(NodeProperty.Name.ToString(), "Willis O. Hicks");
            prop.SetProperty(NodeProperty.Age.ToString(), "33");
            prop.SetProperty(NodeProperty.LivesIn.ToString(), "Ann Arbor");

            var nodeUserWithName3 = Node.CreateNode(NodeType.Person.ToString(), prop);

            prop = new Properties();
            prop.SetProperty(NodeProperty.Name.ToString(), "Leroy P. Wagner");
            prop.SetProperty(NodeProperty.Age.ToString(), "40");
            prop.SetProperty(NodeProperty.LivesIn.ToString(), "Hattiesburg");

            var nodeUserWithName4 = Node.CreateNode(NodeType.Person.ToString(), prop);

            prop = new Properties();
            prop.SetProperty(NodeProperty.Name.ToString(), "Nancy J. Rose");
            prop.SetProperty(NodeProperty.Age.ToString(), "25");
            prop.SetProperty(NodeProperty.LivesIn.ToString(), "Cornish");

            var nodeUserWithName5 = Node.CreateNode(NodeType.Person.ToString(), prop);

            prop = new Properties();
            prop.SetProperty(NodeProperty.Name.ToString(), "Sally G. Gee");
            prop.SetProperty(NodeProperty.Age.ToString(), "48");
            prop.SetProperty(NodeProperty.LivesIn.ToString(), "Charlestown");

            var nodeUserWithName6 = Node.CreateNode(NodeType.Person.ToString(), prop);

            prop = new Properties();
            prop.SetProperty(NodeProperty.Name.ToString(), "Blanche T. Perez");
            prop.SetProperty(NodeProperty.Age.ToString(), "35");
            prop.SetProperty(NodeProperty.LivesIn.ToString(), "Philadelphia");

            var nodeUserWithName7 = Node.CreateNode(NodeType.Person.ToString(), prop);

            prop = new Properties();
            prop.SetProperty(NodeProperty.Name.ToString(), "Robert S. Johnston");
            prop.SetProperty(NodeProperty.Age.ToString(), "22");
            prop.SetProperty(NodeProperty.LivesIn.ToString(), "Lancaster");

            var nodeUserWithName8 = Node.CreateNode(NodeType.Person.ToString(), prop);

            // Create Relationships to Nodes
            rootNode.CreateRelationshipTo(nodeUserWithName1, RelationshipType.Knows.ToString());
            rootNode.CreateRelationshipTo(nodeUserWithName2, RelationshipType.Knows.ToString());
            rootNode.CreateRelationshipTo(nodeUserWithName3, RelationshipType.Knows.ToString());
            rootNode.CreateRelationshipTo(nodeUserWithName4, RelationshipType.Knows.ToString());
            rootNode.CreateRelationshipTo(nodeUserWithName5, RelationshipType.Knows.ToString());
            rootNode.CreateRelationshipTo(nodeUserWithName6, RelationshipType.Knows.ToString());
            rootNode.CreateRelationshipTo(nodeUserWithName7, RelationshipType.Knows.ToString());
            rootNode.CreateRelationshipTo(nodeUserWithName8, RelationshipType.Knows.ToString());

            // Create Relationship with Properties
            //var relProp = new Properties();
            //relProp.SetProperty(RelationshipProperty.Name.ToString(), "MyRelationship");
            //relProp.SetProperty("CustomRelProp", "CustomPropValue");

            nodeUserWithName1.CreateRelationshipTo(nodeUserWithName2, RelationshipType.Knows.ToString());
            nodeUserWithName1.CreateRelationshipTo(nodeUserWithName3, RelationshipType.Knows.ToString());
            nodeUserWithName2.CreateRelationshipTo(nodeUserWithName3, RelationshipType.Knows.ToString());
            nodeUserWithName5.CreateRelationshipTo(nodeUserWithName6, RelationshipType.Knows.ToString());
            nodeUserWithName6.CreateRelationshipTo(nodeUserWithName8, RelationshipType.Knows.ToString());
            nodeUserWithName7.CreateRelationshipTo(nodeUserWithName1, RelationshipType.Knows.ToString());
            nodeUserWithName7.CreateRelationshipTo(nodeUserWithName1, RelationshipType.Knows.ToString());
            nodeUserWithName7.CreateRelationshipTo(nodeUserWithName3, RelationshipType.Knows.ToString());
            nodeUserWithName7.CreateRelationshipTo(nodeUserWithName4, RelationshipType.Knows.ToString());
            nodeUserWithName7.CreateRelationshipTo(nodeUserWithName5, RelationshipType.Knows.ToString());
            nodeUserWithName7.CreateRelationshipTo(nodeUserWithName6, RelationshipType.Knows.ToString());
            nodeUserWithName7.CreateRelationshipTo(nodeUserWithName8, RelationshipType.Knows.ToString());

        }

I tried to find a methods to create indexes, which would be equivalent to the following java methods:

IndexManager index = graphDb.index(); Index people = index.forNodes( "people" ); RelationshipIndex roles = index.forRelationships( "roles" );

and add it to the person, created with GenerateNetwork() method, which is done in java with following method:

people.add( nodeInstance, "valueName", reeves.getProperty( "valueName" ) );

Anyway so far I haven't found the way to deal with indexes using Neo4jRestClient. Does anyone know how to check for existing indexes and assign nodes to indexes using Neo4jRestClient?

I would be very thankful if anyone shared an example.

Solution

Use ~/.xinitrc and startx (I understand you need no DM like KDM or GDM), and in ~/.xinitrc put exec /usr/bin/i3 , then startx.

Comments

[Admin]

How do you normally login to your system? Are you using a login manager (display manager)? Which one? gdm?

[Admin]

No it's a VM and I just need a window manager... I don't use any display manager...

[Admin]

So how do you start X? Do you boot to the command line? And then what? You run startx?

[Admin]

I want that when I log into the system with my user, that the window manager starts without typing "startx". But "startx" also doesn't work...

[Admin]

Please answer my last comment. How do you do it now? Do you boot to the command line? Then what? You say startx does not work. What happens? Did you do what schaiba suggested? You should create a file called .xinitrc in your $HOME and add the lines from his answer there.

[Niko Gamulin]

Jack, thanks for the answer. I can't run the new version. The old one ran without problem, but the new one is throwing exception at line var rootNode = Node.GetRootNode();

[Niko Gamulin]

Could you give me your email address or contact in order to talk about the solution?

[Jack Shaw]

Niko, the GetRootNode method will throw an error if the root node has been deleted from the graph. here is a link to a discussion on neo4j.org that talks about this (groups.google.com/forum/#!topic/neo4j/Sb2ANlJtLDY ). My personal take on this; i do not like the idea of RootNode. i prefer to crate a node as a root to my graph because of the issues raised in the discussion on neo4j. if you would like you can open issues on github.com/SepiaGroup/Neo4jRestNet thanks.

[user2927980]

I'm sorry, there is no such file on the entire system (says "find / -name ".xinitrc")... Xorg-X11-Server is installed

[schaiba]

If there isn't , create it. ;)

[Avindra Goolcharan]

Using this method works but it seems that the system WM (lxdm in my case) calls the child WM (i3). You can see this easily with the tree view in htop. Would this cause any computational overhead? Is there any benefit to editing an actual system config to default to i3?