X-Git-Url: https://juplo.de/gitweb/?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Fde%2Fjuplo%2Fkafka%2Fchat%2Fbackend%2Fdomain%2FChatHome.java;h=d04bd73859236ea8285e13e6fefa4a3c11e8f0cd;hb=14c6a8c34de8b46b7f1655558727fc1276afb036;hp=a75a9a1312a00b4981acfab4b0194a3803b4bb13;hpb=8e11510f956a4370044ef5819a53664df6ad1dcd;p=demos%2Fkafka%2Fchat

diff --git a/src/main/java/de/juplo/kafka/chat/backend/domain/ChatHome.java b/src/main/java/de/juplo/kafka/chat/backend/domain/ChatHome.java
index a75a9a13..d04bd738 100644
--- a/src/main/java/de/juplo/kafka/chat/backend/domain/ChatHome.java
+++ b/src/main/java/de/juplo/kafka/chat/backend/domain/ChatHome.java
@@ -3,12 +3,13 @@ package de.juplo.kafka.chat.backend.domain;
 import lombok.RequiredArgsConstructor;
 
 import java.util.*;
+import java.util.stream.Stream;
 
 
 @RequiredArgsConstructor
 public class ChatHome
 {
-  private final Map<UUID, Chatroom> chatrooms = new HashMap<>();
+  private final Map<UUID, Chatroom> chatrooms;
   private final ChatroomFactory factory;
 
 
@@ -19,13 +20,13 @@ public class ChatHome
     return chatroom;
   }
 
-  public Chatroom getChatroom(UUID id)
+  public Optional<Chatroom> getChatroom(UUID id)
   {
-    return chatrooms.get(id);
+    return Optional.ofNullable(chatrooms.get(id));
   }
 
-  public Collection<Chatroom> list()
+  public Stream<Chatroom> list()
   {
-    return chatrooms.values();
+    return chatrooms.values().stream();
   }
 }