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v4.0
    v4.0

    GraphSet

    GraphSet, or Ultipa GraphSet, is the graph structure composed of nodes and edges, as well as the collection of schemas and properties of nodes and edges, permissions other than nodes and edges, indexes and other information. GraphSet may be referred to as graph later.

    During the initial launch of Ultipa instance, a GraphSet named default is created automatically (non-deletable). Every Ultipa instance may contain multiple GraphSets.

    Please refer to chapter Basic Concepts for the naming conventions of GraphSet.

    Temporarily unused GraphSets, that is, those do not need or have to avoid any UQL or RPC operations on schema, property and metadata, can be unmounted until it is required. Server memory can be appropriately saved through this method.

    Unmounted GraphSet can only be modified, deleted and mounted. After re-mounting, the LTE and indexes of graph properties keep consistent with the previous.

    Show Graph

    Returned table name: _graph
    Returned table header: id | name | totalNodes | totalEdges | description | status (the ID, name, number of nodes, number of edges, description and status of the graph; status of graph can be mounted, unmounted and mounting; only mounted graph shows the real number of nodes and edges)

    Syntax:

    // To show all graphsets in the current Ultipa instance (via listGraph API)
    show().graph()
    
    // To show all graphsets in the current Ultipa instance
    show().graph("")
    
    // To show a certain graphset in the current Ultipa instance
    show().graph("<name>")
    

    Create Graph

    Syntax:

    // To create a graphset in the current Ultipa instance
    create().graph("<name>", "<desc?>")
    
    // To create multiple graphsets at one time by reusing the method above
    create()
      .graph("<name>", "<desc?>")
      .graph("<name>", "<desc?>")
    	...
    

    Alter Graph (Name, Description)

    Syntax:

    // To modify the name, description of a certain graphset in the current Ultipa instance
    alter().graph("<name>")
      .set({name: "<new_name?>", description: "<new_desc?>"})
    

    Drop Graph

    Except for the default GraphSet, which is not allowed to be deleted, all the other GraphSets in the current Ultipa instance can be deleted.

    Syntax:

    // To delete a certain graphset from the current Ultipa instance
    drop().graph("<name>")
    
    // To delete multiple graphsets from the current Ultipa instance
    drop().graph("<name>").graph("<name>")...
    

    Mount Graph

    Syntax:

    // To mount a certain graphset from the current Ultipa instance
    mount().graph("<name>")
    

    Unmount Graph

    Except for the default GraphSet, which is not allowed to be unmounted, all the other Graphsets in the current Ultipa instance can be unmounted.

    If the current GraphSet is unmounted, user cannot perform any operations on the schema, property, metadata and so on within itself.

    Syntax:

    // To unmount a certain graphset from the current Ultipa instance
    unmount().graph("<name>")
    
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