Usar ExecuteOpenCypherExplainQuery com um SDK da AWS - Exemplos de código do AWS SDK

Há mais exemplos do AWS SDK disponíveis no repositório do GitHub Documento de Exemplos do AWS SDK.

Usar ExecuteOpenCypherExplainQuery com um SDK da AWS

Os exemplos de código a seguir mostram como usar o ExecuteOpenCypherExplainQuery.

Java
SDK para Java 2.x
nota

Há mais no GitHub. Encontre o exemplo completo e veja como configurar e executar no AWS Code Examples Repository.

/** * Executes an OpenCypher EXPLAIN query using the provided Neptune data client. * * @param client The Neptune data client to use for the query execution. */ public static void executeGremlinQuery(NeptunedataClient client) { try { System.out.println("Executing OpenCypher EXPLAIN query..."); ExecuteOpenCypherExplainQueryRequest request = ExecuteOpenCypherExplainQueryRequest.builder() .openCypherQuery("MATCH (n {code: 'ANC'}) RETURN n") .explainMode("debug") .build(); ExecuteOpenCypherExplainQueryResponse response = client.executeOpenCypherExplainQuery(request); if (response.results() != null) { System.out.println("Explain Results:"); System.out.println(response.results().asUtf8String()); } else { System.out.println("No explain results returned."); } } catch (NeptunedataException e) { System.err.println("Neptune error: " + e.awsErrorDetails().errorMessage()); } catch (Exception e) { System.err.println("Unexpected error: " + e.getMessage()); } finally { client.close(); } }
Python
SDK para Python (Boto3).
nota

Há mais no GitHub. Encontre o exemplo completo e veja como configurar e executar no AWS Code Examples Repository.

# Replace with your actual Neptune endpoint URL NEPTUNE_ENDPOINT = "https://<your-neptune-endpoint>:8182" def main(): """ Entry point: Create Neptune client and execute different OpenCypher queries. """ config = Config(connect_timeout=10, read_timeout=30, retries={'max_attempts': 3}) neptune_client = boto3.client( "neptunedata", endpoint_url=NEPTUNE_ENDPOINT, config=config ) execute_open_cypher_query_without_params(neptune_client) execute_open_cypher_query_with_params(neptune_client) execute_open_cypher_explain_query(neptune_client) def execute_open_cypher_query_without_params(client): """ Executes a simple OpenCypher query without parameters. """ try: print("\nRunning OpenCypher query without parameters...") resp = client.execute_open_cypher_query( openCypherQuery="MATCH (n {code: 'ANC'}) RETURN n" ) print("Results:") print(resp['results']) except Exception as e: print(f"Error in simple OpenCypher query: {str(e)}") def execute_open_cypher_query_with_params(client): """ Executes an OpenCypher query using parameters. """ try: print("\nRunning OpenCypher query with parameters...") parameters = {'code': 'ANC'} resp = client.execute_open_cypher_query( openCypherQuery="MATCH (n {code: $code}) RETURN n", parameters=json.dumps(parameters) ) print("Results:") print(resp['results']) except Exception as e: print(f"Error in parameterized OpenCypher query: {str(e)}") def execute_open_cypher_explain_query(client): """ Runs an OpenCypher EXPLAIN query in debug mode. """ try: print("\nRunning OpenCypher EXPLAIN query (debug mode)...") resp = client.execute_open_cypher_explain_query( openCypherQuery="MATCH (n {code: 'ANC'}) RETURN n", explainMode="details" ) results = resp.get('results') if results is None: print("No explain results returned.") else: try: print("Explain Results:") print(results.read().decode('UTF-8')) except Exception as e: print(f"Error in OpenCypher EXPLAIN query: {str(e)}") except ClientError as e: print(f"Neptune error: {e.response['Error']['Message']}") except BotoCoreError as e: print(f"BotoCore error: {str(e)}") except Exception as e: print(f"Unexpected error: {str(e)}") if __name__ == "__main__": main()