Utilizzare con un SDK ExecuteOpenCypherExplainQueryAWS - AWS Esempi di codice SDK

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Utilizzare con un SDK ExecuteOpenCypherExplainQueryAWS

Gli esempi di codice seguenti mostrano come utilizzare ExecuteOpenCypherExplainQuery.

Java
SDK per Java 2.x
Nota

C'è altro da fare. GitHub Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel Repository di esempi di codice AWS.

/** * 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 per Python (Boto3)
Nota

C'è altro su GitHub. Trova l'esempio completo e scopri di più sulla configurazione e l'esecuzione nel Repository di esempi di codice AWS.

# 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()