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COLLECTIONS-602: Improve efficiency of DefaultedMap.get. Applying patch provided by John Mark. 

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/collections/trunk@1796031 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Bruno P. Kinoshita 2017-05-24 09:32:48 +00:00
parent 9f0d58985f
commit 8f346f9f12
2 changed files with 7 additions and 5 deletions
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3
src/changes/changes.xml
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@ -21,6 +21,9 @@
</properties>
<body>
<release version="4.2" date="YYYY-MM-DD" description="New features">
<action issue="COLLECTIONS-602" dev="kinow" type="update" due-to="John Mark">
Improve efficiency of DefaultedMap.get
</action>
<action issue="COLLECTIONS-603" dev="kinow" type="fix" due-to="Artem Konovalov">
Small improvements for generics, conditional statements, and warnings suppressions.
</action>

9
src/main/java/org/apache/commons/collections4/map/DefaultedMap.java
View File

@ -198,11 +198,10 @@ public class DefaultedMap<K, V> extends AbstractMapDecorator<K, V> implements Se
@Override
@SuppressWarnings("unchecked")
public V get(final Object key) {
// create value for key if key is not currently in the map
if (map.containsKey(key) == false) {
return value.transform((K) key);
}
return map.get(key);
V v;
return (((v = map.get(key)) != null) || map.containsKey(key))
? v
: value.transform((K) key);
}
// no need to wrap keySet, entrySet or values as they are views of