org.castor.cache.hashbelt.container
Class MapContainer
java.lang.Object
java.util.AbstractMap<K,V>
java.util.concurrent.ConcurrentHashMap<java.lang.Object,java.lang.Object>
org.castor.cache.hashbelt.container.MapContainer
- All Implemented Interfaces:
- java.io.Serializable, java.util.concurrent.ConcurrentMap<java.lang.Object,java.lang.Object>, java.util.Map<java.lang.Object,java.lang.Object>, Container
public final class MapContainer
- extends java.util.concurrent.ConcurrentHashMap<java.lang.Object,java.lang.Object>
- implements Container
A very basic, HashMap-based implementation of the hashmap container strategy,
using nothing more than a basic hashmap to store key/value pairs. This works
well for lots of gets and a reasonably high volume of removes; if few removes
are required, and iterators are important to your particluar use-case of the
cache, it's better to use the FastIteratingContainer, which can handle
iterating at a higher speed, still has a map for accessing hash values, but has
a higher removal cost.
- Since:
- 1.0
- Version:
- $Revision: 7950 $ $Date: 2006-04-25 16:09:10 -0600 (Tue, 25 Apr 2006) $
- Author:
- Gregory Block, Ralf Joachim
- See Also:
- Serialized Form
Nested classes/interfaces inherited from class java.util.AbstractMap |
java.util.AbstractMap.SimpleEntry<K,V>, java.util.AbstractMap.SimpleImmutableEntry<K,V> |
Nested classes/interfaces inherited from interface java.util.Map |
java.util.Map.Entry<K,V> |
Method Summary |
long |
getTimestamp()
Returns the timestamp of this container. |
java.util.Iterator<java.lang.Object> |
keyIterator()
Returns an iterator over the keys contained in this container. |
void |
updateTimestamp()
Set the timestamp of this container to System.currentTimeMillis(). |
java.util.Iterator<java.lang.Object> |
valueIterator()
Returns an iterator over the values contained in this container. |
Methods inherited from class java.util.concurrent.ConcurrentHashMap |
clear, contains, containsKey, containsValue, elements, entrySet, get, isEmpty, keys, keySet, put, putAll, putIfAbsent, remove, remove, replace, replace, size, values |
Methods inherited from class java.util.AbstractMap |
clone, equals, hashCode, toString |
Methods inherited from class java.lang.Object |
finalize, getClass, notify, notifyAll, wait, wait, wait |
Methods inherited from interface java.util.Map |
clear, containsKey, containsValue, entrySet, equals, get, hashCode, isEmpty, keySet, put, putAll, remove, size, values |
MapContainer
public MapContainer()
updateTimestamp
public void updateTimestamp()
- Set the timestamp of this container to System.currentTimeMillis().
- Specified by:
updateTimestamp
in interface Container
getTimestamp
public long getTimestamp()
- Returns the timestamp of this container.
- Specified by:
getTimestamp
in interface Container
- Returns:
- The timestamp.
keyIterator
public java.util.Iterator<java.lang.Object> keyIterator()
- Returns an iterator over the keys contained in this container. If the container
is modified while an iteration is in progress, the results of the iteration
is not affected and vice-versa.
- Specified by:
keyIterator
in interface Container
- Returns:
- An iterator over the keys currently contained in the container.
valueIterator
public java.util.Iterator<java.lang.Object> valueIterator()
- Returns an iterator over the values contained in this container. If the container
is modified while an iteration is in progress, the results of the iteration
is not affected and vice-versa.
- Specified by:
valueIterator
in interface Container
- Returns:
- An iterator over the values currently contained in the container.
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