com.alibaba.fastjson.util

Class AntiCollisionHashMap<K,V>

java.lang.Object

java.util.AbstractMap<K,V>

com.alibaba.fastjson.util.AntiCollisionHashMap<K,V>

All Implemented Interfaces:

Serializable, Cloneable, Map<K,V>

Deprecated.

public class AntiCollisionHashMap<K,V>
extends AbstractMap<K,V>
implements Map<K,V>, Cloneable, Serializable

See Also:

Serialized Form

Nested Class Summary

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

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

Constructor Summary

Constructors

Constructor and Description
AntiCollisionHashMap() Deprecated. Constructs an empty SafelyHashMap with the default initial capacity (16) and the default load factor (0.75).
AntiCollisionHashMap(int initialCapacity) Deprecated. Constructs an empty SafelyHashMap with the specified initial capacity and the default load factor (0.75).
AntiCollisionHashMap(int initialCapacity, float loadFactor) Deprecated.
AntiCollisionHashMap(Map<? extends K,? extends V> m) Deprecated. Constructs a new SafelyHashMap with the same mappings as the specified Map.

Method Summary

Modifier and Type	Method and Description
void	clear() Deprecated. Removes all of the mappings from this map.
Object	clone() Deprecated. Returns a shallow copy of this SafelyHashMap instance: the keys and values themselves are not cloned.
boolean	containsKey(Object key) Deprecated. Returns true if this map contains a mapping for the specified key.
boolean	containsValue(Object value) Deprecated. Returns true if this map maps one or more keys to the specified value.
Set<Map.Entry<K,V>>	entrySet() Deprecated. Returns a Set view of the mappings contained in this map.
V	get(Object key) Deprecated. Returns the value to which the specified key is mapped, or null if this map contains no mapping for the key.
boolean	isEmpty() Deprecated. Returns true if this map contains no key-value mappings.
Set<K>	keySet() Deprecated. Returns a Set view of the keys contained in this map.
V	put(K key, V value) Deprecated. Associates the specified value with the specified key in this map.
void	putAll(Map<? extends K,? extends V> m) Deprecated. Copies all of the mappings from the specified map to this map.
V	remove(Object key) Deprecated. Removes the mapping for the specified key from this map if present.
int	size() Deprecated. Returns the number of key-value mappings in this map.
Collection<V>	values() Deprecated. Returns a Collection view of the values contained in this map.

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, equals, forEach, getOrDefault, hashCode, merge, putIfAbsent, remove, replace, replace, replaceAll

Constructor Detail

AntiCollisionHashMap

public AntiCollisionHashMap(int initialCapacity,
                            float loadFactor)

Deprecated.

AntiCollisionHashMap

public AntiCollisionHashMap(int initialCapacity)

Deprecated.

Constructs an empty SafelyHashMap with the specified initial capacity and the default load factor (0.75).

Parameters:

initialCapacity - the initial capacity.

Throws:

IllegalArgumentException - if the initial capacity is negative.

AntiCollisionHashMap

public AntiCollisionHashMap()

Deprecated.

Constructs an empty SafelyHashMap with the default initial capacity (16) and the default load factor (0.75).

AntiCollisionHashMap

public AntiCollisionHashMap(Map<? extends K,? extends V> m)

Deprecated.

Constructs a new SafelyHashMap with the same mappings as the specified Map. The SafelyHashMap is created with default load factor (0.75) and an initial capacity sufficient to hold the mappings in the specified Map.

Parameters:

m - the map whose mappings are to be placed in this map

Throws:

NullPointerException - if the specified map is null

Method Detail

size

public int size()

Deprecated.

Returns the number of key-value mappings in this map.

Specified by:

size in interface Map<K,V>

Overrides:

size in class AbstractMap<K,V>

Returns:

the number of key-value mappings in this map

isEmpty

public boolean isEmpty()

Deprecated.

Returns true if this map contains no key-value mappings.

Specified by:

isEmpty in interface Map<K,V>

Overrides:

isEmpty in class AbstractMap<K,V>

Returns:

true if this map contains no key-value mappings

get

public V get(Object key)

Deprecated.

Returns the value to which the specified key is mapped, or null if this map contains no mapping for the key.

More formally, if this map contains a mapping from a key k to a value v such that (key==null ? k==null : key.equals(k)), then this method returns v; otherwise it returns null. (There can be at most one such mapping.)

A return value of null does not necessarily indicate that the map contains no mapping for the key; it's also possible that the map explicitly maps the key to null. The containsKey operation may be used to distinguish these two cases.

Specified by:

get in interface Map<K,V>

Overrides:

get in class AbstractMap<K,V>

See Also:

put(Object, Object)

containsKey

public boolean containsKey(Object key)

Deprecated.

Returns true if this map contains a mapping for the specified key.

Specified by:

containsKey in interface Map<K,V>

Overrides:

containsKey in class AbstractMap<K,V>

Parameters:

key - The key whose presence in this map is to be tested

Returns:

true if this map contains a mapping for the specified key.

put

public V put(K key,
             V value)

Deprecated.

Associates the specified value with the specified key in this map. If the map previously contained a mapping for the key, the old value is replaced.

Specified by:

put in interface Map<K,V>

Overrides:

put in class AbstractMap<K,V>

Parameters:

key - key with which the specified value is to be associated

value - value to be associated with the specified key

Returns:

the previous value associated with key, or null if there was no mapping for key. (A null return can also indicate that the map previously associated null with key.)

putAll

public void putAll(Map<? extends K,? extends V> m)

Deprecated.

Copies all of the mappings from the specified map to this map. These mappings will replace any mappings that this map had for any of the keys currently in the specified map.

Specified by:

putAll in interface Map<K,V>

Overrides:

putAll in class AbstractMap<K,V>

Parameters:

m - mappings to be stored in this map

Throws:

NullPointerException - if the specified map is null

remove

public V remove(Object key)

Deprecated.

Removes the mapping for the specified key from this map if present.

Specified by:

remove in interface Map<K,V>

Overrides:

remove in class AbstractMap<K,V>

Parameters:

key - key whose mapping is to be removed from the map

Returns:

the previous value associated with key, or null if there was no mapping for key. (A null return can also indicate that the map previously associated null with key.)

clear

public void clear()

Deprecated.

Removes all of the mappings from this map. The map will be empty after this call returns.

Specified by:

clear in interface Map<K,V>

Overrides:

clear in class AbstractMap<K,V>

containsValue

public boolean containsValue(Object value)

Deprecated.

Returns true if this map maps one or more keys to the specified value.

Specified by:

containsValue in interface Map<K,V>

Overrides:

containsValue in class AbstractMap<K,V>

Parameters:

value - value whose presence in this map is to be tested

Returns:

true if this map maps one or more keys to the specified value

clone

public Object clone()

Deprecated.

Returns a shallow copy of this SafelyHashMap instance: the keys and values themselves are not cloned.

Overrides:

clone in class AbstractMap<K,V>

Returns:

a shallow copy of this map

keySet

public Set<K> keySet()

Deprecated.

Returns a Set view of the keys contained in this map. The set is backed by the map, so changes to the map are reflected in the set, and vice-versa. If the map is modified while an iteration over the set is in progress (except through the iterator's own remove operation), the results of the iteration are undefined. The set supports element removal, which removes the corresponding mapping from the map, via the Iterator.remove, Set.remove, removeAll, retainAll, and clear operations. It does not support the add or addAll operations.

Specified by:

keySet in interface Map<K,V>

Overrides:

keySet in class AbstractMap<K,V>

values

public Collection<V> values()

Deprecated.

Returns a Collection view of the values contained in this map. The collection is backed by the map, so changes to the map are reflected in the collection, and vice-versa. If the map is modified while an iteration over the collection is in progress (except through the iterator's own remove operation), the results of the iteration are undefined. The collection supports element removal, which removes the corresponding mapping from the map, via the Iterator.remove, Collection.remove, removeAll, retainAll and clear operations. It does not support the add or addAll operations.

Specified by:

values in interface Map<K,V>

Overrides:

values in class AbstractMap<K,V>

entrySet

public Set<Map.Entry<K,V>> entrySet()

Deprecated.

Returns a Set view of the mappings contained in this map. The set is backed by the map, so changes to the map are reflected in the set, and vice-versa. If the map is modified while an iteration over the set is in progress (except through the iterator's own remove operation, or through the setValue operation on a map entry returned by the iterator) the results of the iteration are undefined. The set supports element removal, which removes the corresponding mapping from the map, via the Iterator.remove, Set.remove, removeAll , retainAll and clear operations. It does not support the add or addAll operations.

Specified by:

entrySet in interface Map<K,V>

Specified by:

entrySet in class AbstractMap<K,V>

Returns:

a set view of the mappings contained in this map