Request Syntax URI Request Parameters Request Body Response Syntax Response Elements Errors See Also

GetRDFGraphSummary

Gets a graph summary for an RDF graph.

When invoking this operation in a Neptune cluster that has IAM authentication enabled, the IAM user or role making the request must have a policy attached that allows the neptune-db:GetGraphSummary IAM action in that cluster.

Request Syntax


GET /rdf/statistics/summary?mode=mode HTTP/1.1

URI Request Parameters

The request uses the following URI parameters.

mode

Mode can take one of two values: BASIC (the default), and DETAILED.

Valid Values: basic | detailed

Request Body

The request does not have a request body.

Response Syntax


HTTP/1.1 statusCode
Content-type: application/json

{
   "payload": { 
      "graphSummary": { 
         "classes": [ "string" ],
         "numClasses": number,
         "numDistinctPredicates": number,
         "numDistinctSubjects": number,
         "numQuads": number,
         "predicates": [ 
            { 
               "string" : number 
            }
         ],
         "subjectStructures": [ 
            { 
               "count": number,
               "predicates": [ "string" ]
            }
         ]
      },
      "lastStatisticsComputationTime": "string",
      "version": "string"
   }
}

Response Elements

If the action is successful, the service sends back the following HTTP response.

statusCode: The HTTP return code of the request. If the request succeeded, the code is 200.

The following data is returned in JSON format by the service.

payload

Payload for an RDF graph summary response

Type: RDFGraphSummaryValueMap object

Errors

For information about the errors that are common to all actions, see Common Errors.

AccessDeniedException

Raised in case of an authentication or authorization failure.

HTTP Status Code: 403

BadRequestException

Raised when a request is submitted that cannot be processed.

HTTP Status Code: 400

ClientTimeoutException

Raised when a request timed out in the client.

HTTP Status Code: 408

ConstraintViolationException

Raised when a value in a request field did not satisfy required constraints.

HTTP Status Code: 400

IllegalArgumentException

Raised when an argument in a request is not supported.

HTTP Status Code: 400

InvalidArgumentException

Raised when an argument in a request has an invalid value.

HTTP Status Code: 400

InvalidParameterException

Raised when a parameter value is not valid.

HTTP Status Code: 400

MissingParameterException

Raised when a required parameter is missing.

HTTP Status Code: 400

PreconditionsFailedException

Raised when a precondition for processing a request is not satisfied.

HTTP Status Code: 400

ReadOnlyViolationException

Raised when a request attempts to write to a read-only resource.

HTTP Status Code: 400

StatisticsNotAvailableException

Raised when statistics needed to satisfy a request are not available.

HTTP Status Code: 400

TooManyRequestsException

Raised when the number of requests being processed exceeds the limit.

HTTP Status Code: 429

UnsupportedOperationException

Raised when a request attempts to initiate an operation that is not supported.

HTTP Status Code: 400