Package com.amazonaws.neptune.client.rdf4j

Class NeptuneRdf4JSigV4Example

java.lang.Object

com.amazonaws.neptune.client.rdf4j.NeptuneRdf4JSigV4Example

public final class NeptuneRdf4JSigV4Example
extends Object

Small example demonstrating how to use NeptuneSparqlRepository with SignatureV4 in combination with the RDF4J library (see http://rdf4j.org/). The example uses the NeptuneSparqlRepository class contained in this package, which extends RDF4J's SparqlRepository class by IAM authentication.

Before running this code, make sure you've got everything setup properly, in particular:

1. Make sure that your AWS credentials are available in the provider chain, see DefaultAWSCredentialsProviderChain for more information.
2. Start the main method by passing in your endpoint, e.g. "http://<my_neptune_host>:<my_neptune_port>". The server will send a "SELECT * WHERE { ?s ?p ?o } LIMIT 10" query against your endpoint.

Author:

schmdtm

Method Summary

Modifier and Type	Method	Description
protected static void	evaluateAndPrintQueryResult(String queryString, org.eclipse.rdf4j.repository.Repository repo)	Evaluate the query and print the query result.
protected static void	executeSignedInsertRequest(String endpointUrl)	Example for signed request.
protected static void	executeSignedQueryRequest(String endpointUrl, String query)	Example for signed request.
protected static void	executeUnsignedQueryRequest(String endpointUrl)	Example for unsigned request.
static void	main(String[] args)	Main method.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

main

public static void main(String[] args)
                 throws Exception

Main method. Expecting the endpoint as the first argument.

Parameters:

args - arguments

Throws:

Exception - in case there are problems

executeSignedQueryRequest

protected static void executeSignedQueryRequest(String endpointUrl,
                                                String query)
                                         throws com.amazonaws.neptune.auth.NeptuneSigV4SignerException

Example for signed request.

Parameters:

endpointUrl - of the endpoint to which to send the request

Throws:

com.amazonaws.neptune.auth.NeptuneSigV4SignerException - in case there's a problem signing the request

executeSignedInsertRequest

protected static void executeSignedInsertRequest(String endpointUrl)
                                          throws com.amazonaws.neptune.auth.NeptuneSigV4SignerException

Example for signed request.

Parameters:

endpointUrl - of the endpoint to which to send the request

Throws:

com.amazonaws.neptune.auth.NeptuneSigV4SignerException - in case there's a problem signing the request

executeUnsignedQueryRequest

protected static void executeUnsignedQueryRequest(String endpointUrl)

Example for unsigned request.

Parameters:

endpointUrl - of the endpoint to which to send the request

evaluateAndPrintQueryResult

protected static void evaluateAndPrintQueryResult(String queryString,
                                                  org.eclipse.rdf4j.repository.Repository repo)

Evaluate the query and print the query result.

Parameters:

queryString - the query string to evaluate

repo - the repository over which to evaluate the query