org.apache.openjpa.lib.util.collections

Class AbstractIterableMap<K,V>

java.lang.Object

org.apache.openjpa.lib.util.collections.AbstractIterableMap<K,V>

Type Parameters:

K - the type of the keys in this map

V - the type of the values in this map

All Implemented Interfaces:

Map<K,V>, IterableMap<K,V>

Direct Known Subclasses:

AbstractMapDecorator

public abstract class AbstractIterableMap<K,V>
extends Object
implements IterableMap<K,V>

Provide a basic IterableMap implementation.

Since:

4.0

Nested Class Summary

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

Map.Entry<K,V>

Constructor Summary

Constructors

Constructor and Description
AbstractIterableMap()

Method Summary

Modifier and Type	Method and Description
MapIterator<K,V>	mapIterator() Obtains a MapIterator over the map.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.openjpa.lib.util.collections.IterableMap

clear, put, putAll

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, containsKey, containsValue, entrySet, equals, forEach, get, getOrDefault, hashCode, isEmpty, keySet, merge, putIfAbsent, remove, remove, replace, replace, replaceAll, size, values

Constructor Detail

AbstractIterableMap

public AbstractIterableMap()

Method Detail

mapIterator

public MapIterator<K,V> mapIterator()

Obtains a MapIterator over the map.

A map iterator is an efficient way of iterating over maps. There is no need to access the entry set or use Map Entry objects.

 IterableMap<String,Integer> map = new HashedMap<String,Integer>();
 MapIterator<String,Integer> it = map.mapIterator();
 while (it.hasNext()) {
   String key = it.next();
   Integer value = it.getValue();
   it.setValue(value + 1);
 }
 

Specified by:

mapIterator in interface IterableMap<K,V>

Returns:

a map iterator