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

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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
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8
spring-test/src/main/java/org/springframework/test/context/cache/DefaultContextCache.java vendored
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@@ -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.
@@ -143,11 +143,7 @@ public class DefaultContextCache implements ContextCache {
MergedContextConfiguration child = key;
MergedContextConfiguration parent = child.getParent();
while (parent != null) {
Set<MergedContextConfiguration> list = this.hierarchyMap.get(parent);
if (list == null) {
list = new HashSet<>();
this.hierarchyMap.put(parent, list);
}
Set<MergedContextConfiguration> list = this.hierarchyMap.computeIfAbsent(parent, k -> new HashSet<>());
list.add(child);
child = parent;
parent = child.getParent();