FastHashMap (jetty-session-redis 2.3.ga API)

java.lang.Object
- com.ovea.jetty.session.serializer.jboss.serial.util.FastHashMap

All Implemented Interfaces:

Serializable, Map
```
public final class FastHashMap
extends Object
implements Map, Serializable
```
A customized implementation of java.util.HashMap designed to operate in a multithreaded environment where the large majority of method calls are read-only, instead of structural changes. Read calls are non-synchronized and write calls perform the following steps:
- Clone the existing collection
- Perform the modification on the clone
- Replace the existing collection with the (modified) clone
NOTE: If you are creating and accessing a HashMap only within a single thread, you should use java.util.HashMap directly (with no synchronization), for maximum performance.
See Also:
Serialized Form

Nested Class Summary
- Nested classes/interfaces inherited from interface java.util.Map
  Map.Entry<K,V>

Constructor Summary

Constructors
Constructor and Description
`FastHashMap()` Construct a an empty map.
`FastHashMap(int capacity)` Construct an empty map with the specified capacity.
`FastHashMap(int capacity, float factor)` Construct an empty map with the specified capacity and load factor.
`FastHashMap(Map map)` Construct a new map with the same mappings as the specified map.

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`clear()` Remove all mappings from this map.
`Object`	`clone()` Return a shallow copy of this `FastHashMap` instance.
`boolean`	`containsKey(Object key)` Return `true` if this map contains a mapping for the specified key.
`boolean`	`containsValue(Object value)` Return `true` if this map contains one or more keys mapping to the specified value.
`Set`	`entrySet()` Return a collection view of the mappings contained in this map.
`boolean`	`equals(Object o)` Compare the specified object with this list for equality.
`Object`	`get(Object key)` Return the value to which this map maps the specified key.
`int`	`hashCode()` Return the hash code value for this map.
`boolean`	`isEmpty()` Return `true` if this map contains no mappings.
`Set`	`keySet()` Return a set view of the keys contained in this map.
`Object`	`put(Object key, Object value)` Associate the specified value with the specified key in this map.
`void`	`putAll(Map in)` Copy all of the mappings from the specified map to this one, replacing any mappings with the same keys.
`Object`	`remove(Object key)` Remove any mapping for this key, and return any previously mapped value.
`int`	`size()` Return the number of key-value mappings in this map.
`String`	`toString()`
`Collection`	`values()` Return a collection view of the values contained in this map.

Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - FastHashMap
```
public FastHashMap()
```
    Construct a an empty map.
  - FastHashMap
```
public FastHashMap(int capacity)
```
    Construct an empty map with the specified capacity.
    
    Parameters:
    capacity - The initial capacity of the empty map
  - FastHashMap
```
public FastHashMap(int capacity,
           float factor)
```
    Construct an empty map with the specified capacity and load factor.
    
    Parameters:
    capacity - The initial capacity of the empty map
    factor - The load factor of the new map
  - FastHashMap
```
public FastHashMap(Map map)
```
    Construct a new map with the same mappings as the specified map.
    
    Parameters:
    map - The map whose mappings are to be copied
- Method Detail
  - clear
```
public void clear()
```
    Remove all mappings from this map.
    
    Specified by:
    
    clear in interface Map
  - clone
```
public Object clone()
```
    Return a shallow copy of this FastHashMap instance. The keys and values themselves are not copied.
    
    Overrides:
    
    clone in class Object
  - containsKey
```
public boolean containsKey(Object key)
```
    Return true if this map contains a mapping for the specified key.
    
    Specified by:
    
    containsKey in interface Map
    
    Parameters:
    key - Key to be searched for
  - containsValue
```
public boolean containsValue(Object value)
```
    Return true if this map contains one or more keys mapping to the specified value.
    
    Specified by:
    
    containsValue in interface Map
    
    Parameters:
    value - Value to be searched for
  - entrySet
```
public Set entrySet()
```
    Return a collection view of the mappings contained in this map. Each element in the returned collection is a Map.Entry.
    
    Specified by:
    
    entrySet in interface Map
  - equals
```
public boolean equals(Object o)
```
    Compare the specified object with this list for equality. This implementation uses exactly the code that is used to define the list equals function in the documentation for the Map.equals method.
    
    Specified by:
    
    equals in interface Map
    
    Overrides:
    
    equals in class Object
    
    Parameters:
    o - Object to be compared to this list
  - get
```
public Object get(Object key)
```
    Return the value to which this map maps the specified key. Returns null if the map contains no mapping for this key, or if there is a mapping with a value of null. Use the containsKey() method to disambiguate these cases.
    
    Specified by:
    
    get in interface Map
    
    Parameters:
    key - Key whose value is to be returned
  - hashCode
```
public int hashCode()
```
    Return the hash code value for this map. This implementation uses exactly the code that is used to define the list hash function in the documentation for the Map.hashCode method.
    
    Specified by:
    
    hashCode in interface Map
    
    Overrides:
    
    hashCode in class Object
  - isEmpty
```
public boolean isEmpty()
```
    Return true if this map contains no mappings.
    
    Specified by:
    
    isEmpty in interface Map
  - keySet
```
public Set keySet()
```
    Return a set view of the keys contained in this map.
    
    Specified by:
    
    keySet in interface Map
  - put
```
public Object put(Object key,
         Object value)
```
    Associate the specified value with the specified key in this map. If the map previously contained a mapping for this key, the old value is replaced and returned.
    
    Specified by:
    
    put in interface Map
    
    Parameters:
    key - The key with which the value is to be associated
    value - The value to be associated with this key
  - putAll
```
public void putAll(Map in)
```
    Copy all of the mappings from the specified map to this one, replacing any mappings with the same keys.
    
    Specified by:
    
    putAll in interface Map
    
    Parameters:
    in - Map whose mappings are to be copied
  - remove
```
public Object remove(Object key)
```
    Remove any mapping for this key, and return any previously mapped value.
    
    Specified by:
    
    remove in interface Map
    
    Parameters:
    key - Key whose mapping is to be removed
  - size
```
public int size()
```
    Return the number of key-value mappings in this map.
    
    Specified by:
    
    size in interface Map
  - values
```
public Collection values()
```
    Return a collection view of the values contained in this map.
    
    Specified by:
    
    values in interface Map
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object

Class FastHashMap

Nested Class Summary

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

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

FastHashMap

FastHashMap

FastHashMap

FastHashMap

Method Detail

clear

clone

containsKey

containsValue

entrySet

equals

get

hashCode

isEmpty

keySet

put

putAll

remove

size

values

toString