Amazon DocumentDB examples using SDK for Java 2.x
The following code examples show you how to perform actions and implement common scenarios by using the AWS SDK for Java 2.x with Amazon DocumentDB.
Each example includes a link to the complete source code, where you can find instructions on how to set up and run the code in context.
Topics
Serverless examples
The following code example shows how to implement a Lambda function that receives an event triggered by receiving records from a DocumentDB change stream. The function retrieves the DocumentDB payload and logs the record contents.
- SDK for Java 2.x
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Note
There's more on GitHub. Find the complete example and learn how to set up and run in the Serverless examples
repository. Consuming a Amazon DocumentDB event with Lambda using Java.
import java.util.List; import java.util.Map; import com.amazonaws.services.lambda.runtime.Context; import com.amazonaws.services.lambda.runtime.RequestHandler; public class Example implements RequestHandler<Map<String, Object>, String> { @SuppressWarnings("unchecked") @Override public String handleRequest(Map<String, Object> event, Context context) { List<Map<String, Object>> events = (List<Map<String, Object>>) event.get("events"); for (Map<String, Object> record : events) { Map<String, Object> eventData = (Map<String, Object>) record.get("event"); processEventData(eventData); } return "OK"; } @SuppressWarnings("unchecked") private void processEventData(Map<String, Object> eventData) { String operationType = (String) eventData.get("operationType"); System.out.println("operationType: %s".formatted(operationType)); Map<String, Object> ns = (Map<String, Object>) eventData.get("ns"); String db = (String) ns.get("db"); System.out.println("db: %s".formatted(db)); String coll = (String) ns.get("coll"); System.out.println("coll: %s".formatted(coll)); Map<String, Object> fullDocument = (Map<String, Object>) eventData.get("fullDocument"); System.out.println("fullDocument: %s".formatted(fullDocument)); } }
