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Better concurrency with the Java 8 API ConcurrentMap#computeIfAbsent().

This commit is contained in:
Gary Gregory 2022-03-20 14:06:39 -04:00
parent 89bcc5f80e
commit 5648bc42e2
1 changed files with 3 additions and 10 deletions
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13
src/main/java/org/apache/commons/lang3/time/FastDateParser.java
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@ -653,16 +653,9 @@ public class FastDateParser implements DateParser, Serializable {
*/ */
private Strategy getLocaleSpecificStrategy(final int field, final Calendar definingCalendar) { private Strategy getLocaleSpecificStrategy(final int field, final Calendar definingCalendar) {
final ConcurrentMap<Locale, Strategy> cache = getCache(field); final ConcurrentMap<Locale, Strategy> cache = getCache(field);
Strategy strategy = cache.get(locale); return cache.computeIfAbsent(locale, k -> {
if (strategy == null) { return field == Calendar.ZONE_OFFSET ? new TimeZoneStrategy(locale) : new CaseInsensitiveTextStrategy(field, definingCalendar, locale);
strategy = field == Calendar.ZONE_OFFSET ? new TimeZoneStrategy(locale) });
: new CaseInsensitiveTextStrategy(field, definingCalendar, locale);
final Strategy inCache = cache.putIfAbsent(locale, strategy);
if (inCache != null) {
return inCache;
}
}
return strategy;
} }
/** /**