de.unkrig.commons.util.collections

Class IdentityLinearMap<K,V>

java.lang.Object

java.util.AbstractMap<K,V>

de.unkrig.commons.util.collections.LinearMap<K,V>

de.unkrig.commons.util.collections.IdentityLinearMap<K,V>

Type Parameters:

K - The type of the map keys

V - The type of the map values

All Implemented Interfaces:

java.util.Map<K,V>

public final class IdentityLinearMap<K,V>
extends LinearMap<K,V>

An identity map (see IdentityHashMap) that performs very well for a SMALL number of entries.

Nested Class Summary

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
IdentityLinearMap()

Method Summary

Modifier and Type	Method and Description
protected boolean	keysEqual(java.lang.Object key1, java.lang.Object key2)
protected boolean	valuesEqual(java.lang.Object value1, java.lang.Object value2)

Methods inherited from class de.unkrig.commons.util.collections.LinearMap

clear, containsKey, containsValue, entrySet, get, isEmpty, put, remove, size

Methods inherited from class java.util.AbstractMap

clone, equals, hashCode, keySet, putAll, toString, values

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll

Constructor Detail

IdentityLinearMap

public IdentityLinearMap()

Method Detail

keysEqual

protected boolean keysEqual(@Nullable
                            java.lang.Object key1,
                            @Nullable
                            java.lang.Object key2)

Overrides:

keysEqual in class LinearMap<K,V>

Returns:

Whether the two keys are equal in the sense of this map; can be overridden e.g. for an 'identity map'

See Also:

IdentityHashMap

valuesEqual

protected boolean valuesEqual(@Nullable
                              java.lang.Object value1,
                              @Nullable
                              java.lang.Object value2)

Overrides:

valuesEqual in class LinearMap<K,V>

Returns:

Whether the two values are equal in the sense of this map