org.apache.hadoop.hbase.util
Class PoolMap<K,V>
java.lang.Object
org.apache.hadoop.hbase.util.PoolMap<K,V>
- Type Parameters:
K - the type of the key to the resourceV - the type of the resource being pooled
- All Implemented Interfaces:
- Map<K,V>
@InterfaceAudience.Public
@InterfaceStability.Evolving
public class PoolMap<K,V>
- extends Object
- implements Map<K,V>
The PoolMap maps a key to a collection of values, the elements
of which are managed by a pool. In effect, that collection acts as a shared
pool of resources, access to which is closely controlled as per the semantics
of the pool.
In case the size of the pool is set to a non-zero positive number, that is
used to cap the number of resources that a pool may contain for any given
key. A size of Integer.MAX_VALUE is interpreted as an unbounded pool.
| 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 |
PoolMap
public PoolMap(PoolMap.PoolType poolType)
PoolMap
public PoolMap(PoolMap.PoolType poolType,
int poolMaxSize)
get
public V get(Object key)
- Specified by:
get in interface Map<K,V>
put
public V put(K key,
V value)
- Specified by:
put in interface Map<K,V>
remove
public V remove(Object key)
- Specified by:
remove in interface Map<K,V>
remove
public boolean remove(K key,
V value)
values
public Collection<V> values()
- Specified by:
values in interface Map<K,V>
values
public Collection<V> values(K key)
isEmpty
public boolean isEmpty()
- Specified by:
isEmpty in interface Map<K,V>
size
public int size()
- Specified by:
size in interface Map<K,V>
size
public int size(K key)
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>
putAll
public void putAll(Map<? extends K,? extends V> map)
- Specified by:
putAll 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>
createPool
protected PoolMap.Pool<V> createPool()
Copyright © 2013 The Apache Software Foundation. All Rights Reserved.