GRÜN: Erwartungen implementiert

[demos/kafka/training] / src / main / java / de / juplo / kafka / AdderBusinessLogic.java

diff --git a/src/main/java/de/juplo/kafka/AdderBusinessLogic.java b/src/main/java/de/juplo/kafka/AdderBusinessLogic.java
index bd89871..1f3d9aa 100644 (file)
--- a/src/main/java/de/juplo/kafka/AdderBusinessLogic.java
+++ b/src/main/java/de/juplo/kafka/AdderBusinessLogic.java
@@ -37,6 +37,13 @@ public class AdderBusinessLogic
 
   public synchronized void addToSum(String user, Integer value)
   {
+    if (!state.containsKey(user))
+      throw new IllegalStateException("No sumation for " + user + " in progress");
+    if (value == null || value < 1)
+      throw new IllegalArgumentException("Not a positive number: " + value);
+
+    long result = state.get(user) + value;
+    state.put(user, result);
   }
 
   public synchronized Long endSum(String user)
@@ -44,6 +51,11 @@ public class AdderBusinessLogic
     if (!state.containsKey(user))
       throw new IllegalStateException("No sumation for " + user + " in progress");
 
-    return state.get(user);
+    return state.remove(user);
+  }
+
+  protected Map<String, Long> getState()
+  {
+    return state;
   }
 }