org.conqat.lib.commons.collections

Class ListMap<K,V>

java.lang.Object

org.conqat.lib.commons.collections.CollectionMap<K,V,java.util.List<V>>

org.conqat.lib.commons.collections.ListMap<K,V>

Type Parameters:

K - the key type.

V - the value type (i.e. the values stored in the collections).

All Implemented Interfaces:

java.io.Serializable, java.lang.Iterable<java.util.Map.Entry<K,java.util.List<V>>>

public class ListMap<K,V>
extends CollectionMap<K,V,java.util.List<V>>

Manages a map of lists, i.e. each key can store multiple elements.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
ListMap() Create new hashed list map.
ListMap(ListMap<K,V> other) Copy constructor.

Method Summary

Modifier and Type	Method and Description
boolean	addIfNotNull(K key, V value) Adds the value only if the key and value are not null
protected java.util.List<V>	createNewCollection() Returns a new instance of the underlying collection to be used as value for the underlaying map.
static <K,V> ListMap<K,V>	of(K key, java.util.Collection<? extends V> values) Creates a new ListMap of the given key/values.
static ListMap<java.lang.String,java.lang.String>	of(java.lang.String... keysAndValues) Creates a list map from a string array provided it's length is even

Methods inherited from class org.conqat.lib.commons.collections.CollectionMap

add, addAll, addAll, addAll, clear, collectionsToArrays, contains, containsCollection, createUnderlyingMap, createWithCollectionSupplier, getCollection, getCollectionOrElse, getCollectionOrEmpty, getKeys, getValueCount, getValues, iterator, remove, removeCollection, size, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

ListMap

public ListMap()

Create new hashed list map.

ListMap

public ListMap(ListMap<K,V> other)

Copy constructor.

Method Detail

addIfNotNull

public boolean addIfNotNull(K key,
                            V value)

Adds the value only if the key and value are not null

of

public static ListMap<java.lang.String,java.lang.String> of(java.lang.String... keysAndValues)

Creates a list map from a string array provided it's length is even

of

public static <K,V> ListMap<K,V> of(K key,
                                    java.util.Collection<? extends V> values)

Creates a new ListMap of the given key/values.

createNewCollection

protected java.util.List<V> createNewCollection()

Returns a new instance of the underlying collection to be used as value for the underlaying map.

Specified by:

createNewCollection in class CollectionMap<K,V,java.util.List<V>>