Spring/spring-framework
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Use (Concurrent)Map.computeIfAbsent for lazy nested collection creation

Browse Source
This commit is contained in:
Juergen Hoeller
2018-03-23 17:36:23 +01:00
parent 8d8e218b52
commit f00afe3247
5 changed files with 14 additions and 35 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
spring-messaging/src/main/java/org/springframework/messaging/support/NativeMessageHeaderAccessor.java
View File

@@ -1,5 +1,5 @@
/*
* Copyright 2002-2017 the original author or authors.
* Copyright 2002-2018 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -184,11 +184,7 @@ public class NativeMessageHeaderAccessor extends MessageHeaderAccessor {
nativeHeaders = new LinkedMultiValueMap<>(4);
setHeader(NATIVE_HEADERS, nativeHeaders);
}
List<String> values = nativeHeaders.get(name);
if (values == null) {
values = new LinkedList<>();
nativeHeaders.put(name, values);
}
List<String> values = nativeHeaders.computeIfAbsent(name, k -> new LinkedList<>());
values.add(value);
setModified(true);
}
@@ -197,8 +193,7 @@ public class NativeMessageHeaderAccessor extends MessageHeaderAccessor {
if (headers == null) {
return;
}
headers.forEach((key, values) ->
values.forEach(value -> addNativeHeader(key, value)));
headers.forEach((key, values) -> values.forEach(value -> addNativeHeader(key, value)));
}
@Nullable