de.alpharogroup.collections.map

Class MapFactory

java.lang.Object

de.alpharogroup.collections.map.MapFactory

public final class MapFactory
extends Object

Factory class for create new Map objects

Version:

1.0

Author:

Asterios Raptis

Constructor Summary

Constructors

Constructor and Description
MapFactory()

Method Summary

Modifier and Type	Method and Description
static Map<Integer,Map<String,String>>	newAssosiativeArrayMap() Factory method for Map that acts like a javascript associative array.
static <K,V> ConcurrentHashMap<K,V>	newConcurrentHashMap() Factory method for create a new ConcurrentHashMap.
static <K,V> ConcurrentHashMap<K,V>	newConcurrentHashMap(int initialCapacity) Factory method for create a new ConcurrentHashMap.
static <K,V> Map<K,V>	newHashMap() Factory method for create a new HashMap.
static <K,V> Map<K,V>	newHashMap(int initialCapacity) Factory method for create a new HashMap.
static <K,V> Map<K,V>	newInsertionOrderMap() Factory method for create a new InsertionOrderMap.
static <K,V> Map<K,V>	newLazyMap() Factory method for create a new LazyMap from commons-collections4 that encapsulates a HashMap.
static <K,V> Map<K,V>	newLazyTreeMap() Factory method for create a new LazyMap from commons-collections4 that encapsulates a TreeMap.
static <K,V> Map<K,V>	newLazyTreeMap(Comparator<? super K> comparator) Factory method for create a new LazyMap from commons-collections4 that encapsulates a TreeMap.
static <K,V> Map<K,V>	newLinkedHashMap() Factory method for create a new LinkedHashMap.
static <K,V> Map<K,V>	newLinkedHashMap(int initialCapacity) Factory method for create a new LinkedHashMap.
static <K,V> Map<K,V>	newTreeMap() Factory method for create a new TreeMap.
static <K,V> Map<K,V>	newTreeMap(Comparator<? super K> comparator) Factory method for create a new TreeMap.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MapFactory

public MapFactory()

Method Detail

newInsertionOrderMap

public static <K,V> Map<K,V> newInsertionOrderMap()

Factory method for create a new InsertionOrderMap.

Type Parameters:

K - the generic type of the key

V - the generic type of the value

Returns:

The new InsertionOrderMap.

newAssosiativeArrayMap

public static Map<Integer,Map<String,String>> newAssosiativeArrayMap()

Factory method for Map that acts like a javascript associative array. This Map is the counterpart for the associative array in js. For instance: in js you can create and fetch associative arrays like this:

 $arrayObj[0]['firstName'] = 'Albert';
 $arrayObj[0]['lastName'] = 'Einstein';
 $arrayObj[1]['firstName'] = 'Neil';
 $arrayObj[0]['lastName'] = 'Armstrong';
 

With this method you can do the same like this:

 final Map<Integer, Map<String, String>> arrayMap = MapExtensions.newAssosiativeArrayMap();

 arrayMap.get(0).put("firstName", "Albert");
 arrayMap.get(0).put("lastName", "Einstein");
 arrayMap.get(1).put("firstName", "Neil");
 arrayMap.get(1).put("lastName", "Armstrong");
 

Returns:

The Map that acts like a javascript associative array.

newConcurrentHashMap

public static <K,V> ConcurrentHashMap<K,V> newConcurrentHashMap()

Factory method for create a new ConcurrentHashMap.

Type Parameters:

K - the generic type of the key

V - the generic type of the value

Returns:

The new ConcurrentHashMap.

newConcurrentHashMap

public static <K,V> ConcurrentHashMap<K,V> newConcurrentHashMap(int initialCapacity)

Factory method for create a new ConcurrentHashMap.

Type Parameters:

K - the generic type of the key

V - the generic type of the value

Parameters:

initialCapacity - the initial capacity

Returns:

The new ConcurrentHashMap.

newHashMap

public static <K,V> Map<K,V> newHashMap()

Factory method for create a new HashMap.

Type Parameters:

K - the generic type of the key

V - the generic type of the value

Returns:

The new HashMap.

newLinkedHashMap

public static <K,V> Map<K,V> newLinkedHashMap()

Factory method for create a new LinkedHashMap.

Type Parameters:

K - the generic type of the key

V - the generic type of the value

Returns:

The new LinkedHashMap.

newLinkedHashMap

public static <K,V> Map<K,V> newLinkedHashMap(int initialCapacity)

Factory method for create a new LinkedHashMap.

Type Parameters:

K - the generic type of the key

V - the generic type of the value

Parameters:

initialCapacity - the initial capacity

Returns:

The new LinkedHashMap.

newHashMap

public static <K,V> Map<K,V> newHashMap(int initialCapacity)

Factory method for create a new HashMap.

Type Parameters:

K - the generic type of the key

V - the generic type of the value

Parameters:

initialCapacity - the initial capacity

Returns:

The new HashMap.

newLazyMap

public static <K,V> Map<K,V> newLazyMap()

Factory method for create a new LazyMap from commons-collections4 that encapsulates a HashMap.

Type Parameters:

K - the generic type of the key

V - the generic type of the value

Returns:

The new LazyMap.

newLazyTreeMap

public static <K,V> Map<K,V> newLazyTreeMap()

Factory method for create a new LazyMap from commons-collections4 that encapsulates a TreeMap.

Type Parameters:

K - the generic type of the key

V - the generic type of the value

Returns:

The new LazyMap.

newLazyTreeMap

public static <K,V> Map<K,V> newLazyTreeMap(Comparator<? super K> comparator)

Factory method for create a new LazyMap from commons-collections4 that encapsulates a TreeMap.

Type Parameters:

K - the generic type of the key

V - the generic type of the value

Parameters:

comparator - the comparator

Returns:

The new LazyMap.

newTreeMap

public static <K,V> Map<K,V> newTreeMap()

Factory method for create a new TreeMap.

Type Parameters:

K - the generic type of the key

V - the generic type of the value

Returns:

The new TreeMap.

newTreeMap

public static <K,V> Map<K,V> newTreeMap(Comparator<? super K> comparator)

Factory method for create a new TreeMap.

Type Parameters:

K - the generic type of the key

V - the generic type of the value

Parameters:

comparator - the comparator

Returns:

The new TreeMap.