HTTP Methods


#1

HTTP Methods

API v1

Unless otherwise noted, all URIs take a POST command.

Queries and Results

/api/v1/query/gremlin

POST Body: Javascript source code of the query

Response: JSON results, depending on the query.

/api/v1/query/mql

POST Body: JSON MQL query

Response: JSON results, with a query wrapper:

{
        "result": <JSON Result set>
}

If the JSON is invalid or an error occurs:

{
        "error": "Error message"
}

Query Shapes

Result form:

{
        "nodes": [{
                "id" : integer,
                "tags": ["list of tags from the query"],
                "values": ["known values from the query"],
                "is_link_node": bool,  // Does the node represent the link or the node (the oval shapes)
                "is_fixed": bool  // Is the node a fixed starting point of the query
        }],

        "links": [{
                "source": integer,  // Node ID
                "target": integer,  // Node ID
                "link_node": integer  // Node ID
        }]
}

/api/v1/shape/gremlin

POST Body: Javascript source code of the query

Response: JSON description of the last query executed.

/api/v1/shape/mql

POST Body: JSON MQL query

Response: JSON description of the query.

Write commands

Responses come in the form

200 Success:

{
        "result": "Success message."
}

400 / 500 Error:

{
        "error": "Error message."
}

/api/v1/write

POST Body: JSON quads

[{
        "subject": "Subject Node",
        "predicate": "Predicate Node",
        "object": "Object node",
        "label": "Label node"  // Optional
}]   // More than one quad allowed.

Response: JSON response message

/api/v1/write/file/nquad

POST Body: Form-encoded body:

  • Key: NQuadFile, Value: N-Quad file to write.

Response: JSON response message

Example:

curl http://localhost:64210/api/v1/write/file/nquad -F NQuadFile=@30k.n3

/api/v1/delete

POST Body: JSON quads

[{
        "subject": "Subject Node",
        "predicate": "Predicate Node",
        "object": "Object node",
        "label": "Label node"  // Optional
}]   // More than one quad allowed.

Response: JSON response message.