Package com.fasterxml.jackson.core.util

Class InternCache

  • All Implemented Interfaces:
    java.io.Serializable, java.util.concurrent.ConcurrentMap<java.lang.String,​java.lang.String>, java.util.Map<java.lang.String,​java.lang.String>
    public final class InternCache
extends java.util.concurrent.ConcurrentHashMap<java.lang.String,​java.lang.String>
    Singleton class that adds a simple first-level cache in front of regular String.intern() functionality. This is done as a minor performance optimization, to avoid calling native intern() method in cases where same String is being interned multiple times.
    See Also:
    Serialized Form

    • Nested Class Summary

      • Nested classes/interfaces inherited from class java.util.concurrent.ConcurrentHashMap

        java.util.concurrent.ConcurrentHashMap.KeySetView<K extends java.lang.Object,​V extends java.lang.Object>

      • Nested classes/interfaces inherited from class java.util.AbstractMap

        java.util.AbstractMap.SimpleEntry<K extends java.lang.Object,​V extends java.lang.Object>, java.util.AbstractMap.SimpleImmutableEntry<K extends java.lang.Object,​V extends java.lang.Object>

      • Nested classes/interfaces inherited from interface java.util.Map

        java.util.Map.Entry<K extends java.lang.Object,​V extends java.lang.Object>

    • Constructor Summary

      Constructors 
      Constructor Description
      InternCache()  
      InternCache​(int maxSize, float loadFactor, int concurrency)  

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      java.lang.String intern​(java.lang.String input)  

      • Methods inherited from class java.util.concurrent.ConcurrentHashMap

        clear, compute, computeIfAbsent, computeIfPresent, contains, containsKey, containsValue, elements, entrySet, equals, forEach, forEach, forEach, forEachEntry, forEachEntry, forEachKey, forEachKey, forEachValue, forEachValue, get, getOrDefault, hashCode, isEmpty, keys, keySet, keySet, mappingCount, merge, newKeySet, newKeySet, put, putAll, putIfAbsent, reduce, reduceEntries, reduceEntries, reduceEntriesToDouble, reduceEntriesToInt, reduceEntriesToLong, reduceKeys, reduceKeys, reduceKeysToDouble, reduceKeysToInt, reduceKeysToLong, reduceToDouble, reduceToInt, reduceToLong, reduceValues, reduceValues, reduceValuesToDouble, reduceValuesToInt, reduceValuesToLong, remove, remove, replace, replace, replaceAll, search, searchEntries, searchKeys, searchValues, size, toString, values

      • Methods inherited from class java.lang.Object

        getClass, notify, notifyAll, wait, wait, wait

    • Field Detail

    • Constructor Detail

      • InternCache

        public InternCache()

      • InternCache

        public InternCache​(int maxSize,
                   float loadFactor,
                   int concurrency)

    • Method Detail

      • intern

        public java.lang.String intern​(java.lang.String input)