org.transitime.utils

Class ConcurrentHashMapNullKeyOk<K,V>

java.lang.Object

java.util.AbstractMap<K,V>

java.util.concurrent.ConcurrentHashMap<K,V>

org.transitime.utils.ConcurrentHashMapNullKeyOk<K,V>

All Implemented Interfaces:

java.io.Serializable, java.util.concurrent.ConcurrentMap<K,V>, java.util.Map<K,V>

public class ConcurrentHashMapNullKeyOk<K,V>
extends java.util.concurrent.ConcurrentHashMap<K,V>

Inherits from ConcurrentHashMap but allows null key to be used. The methods that use the key are overridden so that if null key is being used it is converted to a "". Since "" is used in place of null the key must be a String.

Author:

SkiBu Smith

See Also:

Serialized Form

Nested Class Summary

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

java.util.concurrent.ConcurrentHashMap.KeySetView<K,V>

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

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

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

java.util.Map.Entry<K,V>

Constructor Summary

Constructors

Constructor and Description
ConcurrentHashMapNullKeyOk()
ConcurrentHashMapNullKeyOk(int initialCapacity)
ConcurrentHashMapNullKeyOk(int initialCapacity, float loadFactor)
ConcurrentHashMapNullKeyOk(int initialCapacity, float loadFactor, int concurrencyLevel)

Method Summary

Modifier and Type	Method and Description
boolean	containsKey(java.lang.Object key)
V	get(java.lang.Object key)
V	put(K key, V value)
V	putIfAbsent(K key, V value)
V	remove(java.lang.Object key)
boolean	remove(java.lang.Object key, java.lang.Object value)
V	replace(K key, V value)
boolean	replace(K key, V oldValue, V newValue)

Methods inherited from class java.util.concurrent.ConcurrentHashMap

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

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

ConcurrentHashMapNullKeyOk

public ConcurrentHashMapNullKeyOk()

ConcurrentHashMapNullKeyOk

public ConcurrentHashMapNullKeyOk(int initialCapacity)

ConcurrentHashMapNullKeyOk

public ConcurrentHashMapNullKeyOk(int initialCapacity,
                                  float loadFactor)

ConcurrentHashMapNullKeyOk

public ConcurrentHashMapNullKeyOk(int initialCapacity,
                                  float loadFactor,
                                  int concurrencyLevel)

Method Detail

get

public V get(java.lang.Object key)

Specified by:

get in interface java.util.Map<K,V>

Overrides:

get in class java.util.concurrent.ConcurrentHashMap<K,V>

containsKey

public boolean containsKey(java.lang.Object key)

Specified by:

containsKey in interface java.util.Map<K,V>

Overrides:

containsKey in class java.util.concurrent.ConcurrentHashMap<K,V>

put

public V put(K key,
             V value)

Specified by:

put in interface java.util.Map<K,V>

Overrides:

put in class java.util.concurrent.ConcurrentHashMap<K,V>

putIfAbsent

public V putIfAbsent(K key,
                     V value)

Specified by:

putIfAbsent in interface java.util.concurrent.ConcurrentMap<K,V>

Specified by:

putIfAbsent in interface java.util.Map<K,V>

Overrides:

putIfAbsent in class java.util.concurrent.ConcurrentHashMap<K,V>

remove

public V remove(java.lang.Object key)

Specified by:

remove in interface java.util.Map<K,V>

Overrides:

remove in class java.util.concurrent.ConcurrentHashMap<K,V>

remove

public boolean remove(java.lang.Object key,
                      java.lang.Object value)

Specified by:

remove in interface java.util.concurrent.ConcurrentMap<K,V>

Specified by:

remove in interface java.util.Map<K,V>

Overrides:

remove in class java.util.concurrent.ConcurrentHashMap<K,V>

replace

public V replace(K key,
                 V value)

Specified by:

replace in interface java.util.concurrent.ConcurrentMap<K,V>

Specified by:

replace in interface java.util.Map<K,V>

Overrides:

replace in class java.util.concurrent.ConcurrentHashMap<K,V>

replace

public boolean replace(K key,
                       V oldValue,
                       V newValue)

Specified by:

replace in interface java.util.concurrent.ConcurrentMap<K,V>

Specified by:

replace in interface java.util.Map<K,V>

Overrides:

replace in class java.util.concurrent.ConcurrentHashMap<K,V>