Package org.apache.uima.util
Class ConcurrentHashMapWithProducer<K,V>
- java.lang.Object
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- java.util.AbstractMap<K,V>
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- java.util.concurrent.ConcurrentHashMap<K,V>
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- org.apache.uima.util.ConcurrentHashMapWithProducer<K,V>
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- All Implemented Interfaces:
Serializable
,ConcurrentMap<K,V>
,Map<K,V>
public class ConcurrentHashMapWithProducer<K,V> extends ConcurrentHashMap<K,V>
A concurrent map supporting a value-creating get. There's a small window where the value producing function could be called multiple times on different threads, but the first one will be used and the others thrown away.- See Also:
- Serialized Form
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Nested Class Summary
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Nested classes/interfaces inherited from class java.util.concurrent.ConcurrentHashMap
ConcurrentHashMap.KeySetView<K extends Object,V extends Object>
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Nested classes/interfaces inherited from class java.util.AbstractMap
AbstractMap.SimpleEntry<K extends Object,V extends Object>, AbstractMap.SimpleImmutableEntry<K extends Object,V extends Object>
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Constructor Summary
Constructors Constructor Description ConcurrentHashMapWithProducer()
ConcurrentHashMapWithProducer(int initialCapacity)
ConcurrentHashMapWithProducer(int initialCapacity, float loadFactor)
ConcurrentHashMapWithProducer(int initialCapacity, float loadFactor, int concurrencyLevel)
ConcurrentHashMapWithProducer(Map<? extends K,? extends V> m)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description V
get(K key, Callable<V> valueProducer)
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Methods inherited from class java.util.concurrent.ConcurrentHashMap
clear, compute, computeIfAbsent, computeIfPresent, contains, containsKey, containsValue, elements, entrySet, equals, forEach, forEach, forEach, forEachEntry, forEachEntry, forEachKey, forEachKey, forEachValue, forEachValue, get, getOrDefault, hashCode, isEmpty, keys, keySet, keySet, mappingCount, merge, newKeySet, newKeySet, put, putAll, putIfAbsent, reduce, reduceEntries, reduceEntries, reduceEntriesToDouble, reduceEntriesToInt, reduceEntriesToLong, reduceKeys, reduceKeys, reduceKeysToDouble, reduceKeysToInt, reduceKeysToLong, reduceToDouble, reduceToInt, reduceToLong, reduceValues, reduceValues, reduceValuesToDouble, reduceValuesToInt, reduceValuesToLong, remove, remove, replace, replace, replaceAll, search, searchEntries, searchKeys, searchValues, size, toString, values
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Methods inherited from class java.util.AbstractMap
clone
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Constructor Detail
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ConcurrentHashMapWithProducer
public ConcurrentHashMapWithProducer()
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ConcurrentHashMapWithProducer
public ConcurrentHashMapWithProducer(int initialCapacity, float loadFactor, int concurrencyLevel)
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ConcurrentHashMapWithProducer
public ConcurrentHashMapWithProducer(int initialCapacity, float loadFactor)
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ConcurrentHashMapWithProducer
public ConcurrentHashMapWithProducer(int initialCapacity)
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