### ChatServiceImpl.java - CDI bean with @ApplicationScoped and @Inject ZeroZDbNode

Source: https://zeroz4j.com/

Server-side CDI bean that implements ChatService. The sendMessage method receives the exact ChatMessage object sent from the client and writes it to the local database using ZeroZDbNode. No controller, deserialisation, or mapping code is needed.

```java
@ApplicationScoped
public class ChatServiceImpl implements ChatService {

    @Inject ZeroZDbNode db;

    @Override
    public void sendMessage(ChatMessage msg) {
        // the exact object sent from the client
        db.localDb().write(ctx -> {
            root.getMessages().add(msg);
            ctx.store(root.getMessages());
        });
    }
}
```

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