Class InternCache

java.lang.Object

java.util.AbstractMap<String,String>

java.util.concurrent.ConcurrentHashMap<String,String>

com.fasterxml.jackson.core.util.InternCache

All Implemented Interfaces:

Serializable, ConcurrentMap<String,String>, Map<String,String>

public final class InternCache
extends ConcurrentHashMap<String,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 ConcurrentHashMap

ConcurrentHashMap.KeySetView<K,V>

Nested classes/interfaces inherited from class AbstractMap

AbstractMap.SimpleEntry<K,V>, AbstractMap.SimpleImmutableEntry<K,V>

Nested classes/interfaces inherited from interface Map

Map.Entry<K,V>

Field Summary

Fields

Modifier and Type	Field	Description
static final InternCache	instance

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
String	intern(String input)

Methods inherited from class 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 AbstractMap

clone

Methods inherited from class Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

instance

public static final InternCache instance

Constructor Details

InternCache

public InternCache()

InternCache

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

Method Details

intern

public String intern(String input)