flaviohcf / neo4jrestnet

.Net Wrapper for Neo4j REST Interface

Neo4jRestNet

.Net wrapper for the Neo4j REST server

Configuration:

<configuration>
    <connectionStrings>
        <add name="neo4j"  connectionString="http://localhost:7474/db/data/" />
        <add name="neo4jGremlinExtension"  connectionString="/ext/GremlinPlugin/graphdb/execute_script/" />
    </connectionStrings>

    <appSettings>
        <add key="EncryptIdKey" value="KeyForEncrypting"/>
        <add key="EncryptIdIV" value="IVForEncrypting1"/>
    </appSettings>
</configuration>

Examples:

Get Root Node:

Node RootNode = Node.GetRootNode();

Create a User Node with no Properties

Node nodeUser = Node.CreateNode(NodeType.User);

Create a User Node with Properties

Properties prop = new Properties();
prop.SetProperty(NodeProperty.FirstName, "Joe");
prop.SetProperty(NodeProperty.LastName, "Smith");
Node nodeUserWithName = Node.CreateNode(NodeType.User, prop);

Create Relationships to Nodes

RootNode.CreateRelationshipTo(nodeUser, RelationshipType.Likes);
RootNode.CreateRelationshipTo(nodeUserWithName, RelationshipType.Likes);

Create Relationship with Properties

Properties RelProp = new Properties();
RelProp.SetProperty(RelationshipProperty.Name, "MyRelationship");
RelProp.SetProperty("CustomRelProp", "CustomPropValue");
nodeUserWithName.CreateRelationshipTo(nodeUser, RelationshipType.Knows, RelProp);

Gremlin

Get Like relationships from the Root Node

IEnumerable<Node> LikeNodes = Gremlin.Post<Node>(RootNode.Id, "out('Likes')");

Same as above

IEnumerable<Node> SameLikeNodes = Gremlin.Post<Node>(new GremlinScript(RootNode).Out(RelationshipType.Likes.ToString()));

More Gremlin example

GremlinScript script = new GremlinScript(RootNode);
script.OutE()
        .InV()
        .OutE()
        .Filter(it => it.getProperty(RelationshipProperty.Name.ToString()) == "MyRelationship");

IEnumerable<Relationship> myRelationship = Gremlin.Post<Relationship>(script);`

Gremlin returning a datatable

GremlinScript tblScript = new GremlinScript();
tblScript.NewTable("t")
                .gV(RootNode)   
                .Out(RelationshipType.Likes.ToString())
                .As("Like")
                .Table("t", new List<string>{ "Like" })
                .Append(" >> -1; t;");

DataTable dt = Gremlin.GetTable(tblScript);