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Utilisation GetSchemaMapping avec un AWS SDK
Les exemples de code suivants illustrent comment utiliser GetSchemaMapping.
Les exemples d’actions sont des extraits de code de programmes de plus grande envergure et doivent être exécutés en contexte. Vous pouvez voir cette action en contexte dans l’exemple de code suivant :
- Java
-
- SDK pour Java 2.x
-
/**
* Retrieves the schema mapping asynchronously.
*
* @param schemaName the name of the schema to retrieve the mapping for
* @return a {@link CompletableFuture} that completes with the {@link GetSchemaMappingResponse} when the operation
* is complete
* @throws RuntimeException if the schema mapping retrieval fails
*/
public CompletableFuture<GetSchemaMappingResponse> getSchemaMappingAsync(String schemaName) {
GetSchemaMappingRequest mappingRequest = GetSchemaMappingRequest.builder()
.schemaName(schemaName)
.build();
return getResolutionAsyncClient().getSchemaMapping(mappingRequest)
.whenComplete((response, exception) -> {
if (response != null) {
response.mappedInputFields().forEach(attribute ->
logger.info("Attribute Name: " + attribute.fieldName() +
", Attribute Type: " + attribute.type().toString()));
} else {
if (exception == null) {
throw new CompletionException("An unknown error occurred while getting schema mapping.", null);
}
Throwable cause = exception.getCause();
if (cause instanceof ResourceNotFoundException) {
throw new CompletionException("The requested schema mapping was not found.", cause);
}
// Wrap other exceptions in a CompletionException with the message.
throw new CompletionException("Failed to get schema mapping: " + exception.getMessage(), exception);
}
});
}
- JavaScript
-
- SDK pour JavaScript (v3)
-
//The default inputs for this demo are read from the ../inputs.json.
import { fileURLToPath } from "node:url";
import {
GetSchemaMappingCommand,
EntityResolutionClient,
} from "@aws-sdk/client-entityresolution";
import data from "../inputs.json" with { type: "json" };
const region = "eu-west-1";
const erClient = new EntityResolutionClient({ region: region });
export const main = async () => {
const getSchemaMappingJsonParams = {
schemaName: `${data.inputs.schemaNameJson}`,
};
try {
const command = new GetSchemaMappingCommand(getSchemaMappingJsonParams);
const response = await erClient.send(command);
console.log(response);
console.log(
`Schema mapping for the JSON data:\n ${response.mappedInputFields[0]}`,
);
console.log("Schema mapping ARN is: ", response.schemaArn);
} catch (caught) {
console.error(caught.message);
throw caught;
}
};
