Package org.apache.ignite.internal.util

Class GridBoundedLinkedHashMap<K,V>

java.lang.Object

java.util.AbstractMap<K,V>

java.util.HashMap<K,V>

java.util.LinkedHashMap<K,V>

org.apache.ignite.internal.util.GridBoundedLinkedHashMap<K,V>

Type Parameters:

K - Map key.

V - Map entry.

All Implemented Interfaces:

Serializable, Cloneable, Map<K,V>

public class GridBoundedLinkedHashMap<K,V>
extends LinkedHashMap<K,V>

Generic map with an upper bound. Once map reaches its maximum capacity, the eldest elements will be removed based on insertion order.

See Also:

Serialized Form

Nested Class Summary

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

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

Constructor Summary

Constructors

Constructor	Description
GridBoundedLinkedHashMap(int maxCap)	Constructs an empty insertion-ordered GridBoundedLinkedHashMap instance with the specified maximum capacity, and a default load factor (0.75).
GridBoundedLinkedHashMap(int initCap, int maxCap)	Constructs an empty insertion-ordered GridBoundedLinkedHashMap instance with the specified initial capacity, maximum capacity, and a default load factor (0.75).
GridBoundedLinkedHashMap(int initCap, int maxCap, float loadFactor)	Constructs an empty insertion-ordered GridBoundedLinkedHashMap instance with the specified initial capacity, maximum capacity, and load factor.
GridBoundedLinkedHashMap(int initCap, int maxCap, float loadFactor, boolean accessOrder)	Constructs an empty GridBoundedLinkedHashMap instance with the specified initial capacity, maximum capacity, load factor and ordering mode.

Method Summary

Modifier and Type	Method	Description
Object	clone()
protected boolean	removeEldestEntry(Map.Entry<K,V> eldest)

Methods inherited from class java.util.LinkedHashMap

clear, containsValue, entrySet, forEach, get, getOrDefault, keySet, replaceAll, values

Methods inherited from class java.util.HashMap

compute, computeIfAbsent, computeIfPresent, containsKey, isEmpty, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, size

Methods inherited from class java.util.AbstractMap

equals, hashCode, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, containsKey, equals, hashCode, isEmpty, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, size

Constructor Detail

GridBoundedLinkedHashMap

public GridBoundedLinkedHashMap(int maxCap)
                         throws IllegalArgumentException

Constructs an empty insertion-ordered GridBoundedLinkedHashMap instance with the specified maximum capacity, and a default load factor (0.75).

Parameters:

maxCap - Maximum map capacity.

Throws:

IllegalArgumentException - If the maximum capacity is negative.

GridBoundedLinkedHashMap

public GridBoundedLinkedHashMap(int initCap,
                                int maxCap)
                         throws IllegalArgumentException

Constructs an empty insertion-ordered GridBoundedLinkedHashMap instance with the specified initial capacity, maximum capacity, and a default load factor (0.75).

Parameters:

initCap - Initial map capacity.

maxCap - Maximum map capacity.

Throws:

IllegalArgumentException - If the initial capacity is negative, or maximum capacity is smaller than initial capacity.

GridBoundedLinkedHashMap

public GridBoundedLinkedHashMap(int initCap,
                                int maxCap,
                                float loadFactor)
                         throws IllegalArgumentException

Constructs an empty insertion-ordered GridBoundedLinkedHashMap instance with the specified initial capacity, maximum capacity, and load factor.

Parameters:

initCap - Initial map capacity.

maxCap - Maximum map capacity.

loadFactor - Load factor.

Throws:

IllegalArgumentException - If the initial capacity is negative, the load factor is non-positive, or maximum capacity is smaller than initial capacity.

GridBoundedLinkedHashMap

public GridBoundedLinkedHashMap(int initCap,
                                int maxCap,
                                float loadFactor,
                                boolean accessOrder)
                         throws IllegalArgumentException

Constructs an empty GridBoundedLinkedHashMap instance with the specified initial capacity, maximum capacity, load factor and ordering mode.

Parameters:

initCap - Initial map capacity.

maxCap - Maximum map capacity.

loadFactor - Load factor.

accessOrder - The ordering mode - true for access-order, false for insertion-order.

Throws:

IllegalArgumentException - If the initial capacity is negative, the load factor is non-positive, or maximum capacity is smaller than initial capacity.

Method Detail

removeEldestEntry

protected boolean removeEldestEntry(Map.Entry<K,V> eldest)

Overrides:

removeEldestEntry in class LinkedHashMap<K,V>

clone

public Object clone()

Overrides:

clone in class HashMap<K,V>