org.apache.hadoop.hbase.util
Class SoftValueMap<K,V>
java.lang.Object
org.apache.hadoop.hbase.util.SoftValueMap<K,V>
- Type Parameters:
K
- key classV
- value class
- All Implemented Interfaces:
- Map<K,V>
public class SoftValueMap<K,V>
- extends Object
- implements Map<K,V>
A Map that uses Soft Reference values internally. Use as a simple cache.
Nested classes/interfaces inherited from interface java.util.Map |
Map.Entry<K,V> |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
SoftValueMap
public SoftValueMap()
SoftValueMap
public SoftValueMap(ReferenceQueue<?> rq)
checkReferences
public int checkReferences()
- Checks soft references and cleans any that have been placed on
ReferenceQueue.
- Returns:
- How many references cleared.
put
public V put(K key,
V value)
- Specified by:
put
in interface Map<K,V>
putAll
public void putAll(Map map)
- Specified by:
putAll
in interface Map<K,V>
get
public V get(Object key)
- Specified by:
get
in interface Map<K,V>
remove
public V remove(Object key)
- Specified by:
remove
in interface Map<K,V>
containsKey
public boolean containsKey(Object key)
- Specified by:
containsKey
in interface Map<K,V>
containsValue
public boolean containsValue(Object value)
- Specified by:
containsValue
in interface Map<K,V>
isEmpty
public boolean isEmpty()
- Specified by:
isEmpty
in interface Map<K,V>
size
public int size()
- Specified by:
size
in interface Map<K,V>
clear
public void clear()
- Specified by:
clear
in interface Map<K,V>
keySet
public Set<K> keySet()
- Specified by:
keySet
in interface Map<K,V>
entrySet
public Set<Map.Entry<K,V>> entrySet()
- Specified by:
entrySet
in interface Map<K,V>
values
public Collection<V> values()
- Specified by:
values
in interface Map<K,V>
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