projects
/
demos
/
kafka
/
training
/ commitdiff
commit
grep
author
committer
pickaxe
?
search:
re
summary
|
shortlog
|
log
|
commit
| commitdiff |
tree
raw
|
patch
|
inline
| side by side (from parent 1:
d576eea
)
GRÜN: Neue Erwartungen umgesetzt
author
Kai Moritz
<kai@juplo.de>
Mon, 15 Aug 2022 17:12:12 +0000
(19:12 +0200)
committer
Kai Moritz
<kai@juplo.de>
Mon, 15 Aug 2022 17:12:12 +0000
(19:12 +0200)
src/main/java/de/juplo/kafka/AdderBusinessLogic.java
patch
|
blob
|
history
diff --git
a/src/main/java/de/juplo/kafka/AdderBusinessLogic.java
b/src/main/java/de/juplo/kafka/AdderBusinessLogic.java
index
ecd9590
..
cbd500d
100644
(file)
--- a/
src/main/java/de/juplo/kafka/AdderBusinessLogic.java
+++ b/
src/main/java/de/juplo/kafka/AdderBusinessLogic.java
@@
-29,13
+29,14
@@
public class AdderBusinessLogic
public synchronized void addToSum(String user, Integer value)
{
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);
if (value == null || value < 1)
throw new IllegalArgumentException("Not a positive number: " + value);
- long result = state.get(user) + value;
- state.put(user, result);
+ long sum =
+ Optional
+ .ofNullable(state.get(user))
+ .orElse(0l);
+ state.put(user, sum + value);
}
public synchronized Long calculate(String user)
}
public synchronized Long calculate(String user)