= Spring Data Sample After running this sample like so: .Java [source,java,role="primary"] ---- ./gradlew :bootRun ---- Then you can query for messages using `luke/password` and `rob/password`. Because the domain objects are secured by ACLs, Rob will only see Rob's messages, and Luke will only see Luke's. For example, querying `/` with `luke`, you'll see: [source,json] ---- [ { "created": "2014-07-12T10:00:00Z", "id": 110, "summary": "Hello Luke", "text": "This message is for Luke", "to": "luke" }, { "created": "2014-07-12T10:00:00Z", "id": 111, "summary": "Greetings Luke", "text": "This message is for Luke", "to": "luke" }, { "created": "2014-07-12T10:00:00Z", "id": 112, "summary": "Is this secure?", "text": "This message is for Luke", "to": "luke" } ] ---- Read more about https://docs.spring.io/spring-security/reference/servlet/authorization/acls.html[Authorization by ACL] in the Spring Security Reference.