com.hazelcast.cache.impl.record

Class CacheRecordHashMap

java.lang.Object

java.util.AbstractMap<K,V>

com.hazelcast.util.ConcurrentReferenceHashMap<K,V>

com.hazelcast.util.SampleableConcurrentHashMap<Data,CacheRecord>

com.hazelcast.cache.impl.record.CacheRecordHashMap

All Implemented Interfaces:

EvictableStore<Data,CacheRecord>, SampleableEvictableStore<Data,CacheRecord>, CacheRecordMap<Data,CacheRecord>, SampleableCacheRecordMap<Data,CacheRecord>, Serializable, ConcurrentMap<Data,CacheRecord>, Map<Data,CacheRecord>

public class CacheRecordHashMap
extends SampleableConcurrentHashMap<Data,CacheRecord>
implements SampleableCacheRecordMap<Data,CacheRecord>

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	CacheRecordHashMap.EvictableSamplingEntry

Nested classes/interfaces inherited from class com.hazelcast.util.SampleableConcurrentHashMap

SampleableConcurrentHashMap.IterableSamplingEntry, SampleableConcurrentHashMap.SamplingEntry

Nested classes/interfaces inherited from class com.hazelcast.util.ConcurrentReferenceHashMap

ConcurrentReferenceHashMap.Option, ConcurrentReferenceHashMap.ReferenceType, ConcurrentReferenceHashMap.SimpleEntry<K,V>, ConcurrentReferenceHashMap.WriteThroughEntry

Nested classes/interfaces inherited from class java.util.AbstractMap

AbstractMap.SimpleImmutableEntry<K,V>

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

Map.Entry<K,V>

Constructor Summary

Constructors

Constructor and Description
CacheRecordHashMap(int initialCapacity)
CacheRecordHashMap(int initialCapacity, float loadFactor, int concurrencyLevel, ConcurrentReferenceHashMap.ReferenceType keyType, ConcurrentReferenceHashMap.ReferenceType valueType, EnumSet<ConcurrentReferenceHashMap.Option> options)

Method Summary

Methods

Modifier and Type	Method and Description
protected CacheRecordHashMap.EvictableSamplingEntry	createSamplingEntry(Data key, CacheRecord value)
<C extends EvictionCandidate<Data,CacheRecord>> int	evict(Iterable<C> evictionCandidates, EvictionListener<Data,CacheRecord> evictionListener) The evict method is called by the EvictionStrategy to eventually evict, by the policy, selected candidates from the internal data structures.
CacheKeyIteratorResult	fetchNext(int nextTableIndex, int size)
Iterable<CacheRecordHashMap.EvictableSamplingEntry>	sample(int sampleCount) The sample method is used to sample a number of entries (defined by the samples parameter) from the internal data structure.

Methods inherited from class com.hazelcast.util.SampleableConcurrentHashMap

fetch, getRandomSamples

Methods inherited from class com.hazelcast.util.ConcurrentReferenceHashMap

clear, contains, containsKey, containsValue, elements, entrySet, get, isEmpty, keys, keySet, purgeStaleEntries, 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

Constructor Detail

CacheRecordHashMap

public CacheRecordHashMap(int initialCapacity)

CacheRecordHashMap

public CacheRecordHashMap(int initialCapacity,
                  float loadFactor,
                  int concurrencyLevel,
                  ConcurrentReferenceHashMap.ReferenceType keyType,
                  ConcurrentReferenceHashMap.ReferenceType valueType,
                  EnumSet<ConcurrentReferenceHashMap.Option> options)

Method Detail

createSamplingEntry

protected CacheRecordHashMap.EvictableSamplingEntry createSamplingEntry(Data key,
                                                            CacheRecord value)

Overrides:

createSamplingEntry in class SampleableConcurrentHashMap<Data,CacheRecord>

fetchNext

public CacheKeyIteratorResult fetchNext(int nextTableIndex,
                               int size)

Specified by:

fetchNext in interface CacheRecordMap<Data,CacheRecord>

evict

public <C extends EvictionCandidate<Data,CacheRecord>> int evict(Iterable<C> evictionCandidates,
                                                        EvictionListener<Data,CacheRecord> evictionListener)

Description copied from interface: EvictableStore

The evict method is called by the EvictionStrategy to eventually evict, by the policy, selected candidates from the internal data structures.

Specified by:

evict in interface EvictableStore<Data,CacheRecord>

Parameters:

evictionCandidates - Multiple EvictionCandidate to be evicted

evictionListener - EvictionListener to listen evicted entries

Returns:

evicted entry count

sample

public Iterable<CacheRecordHashMap.EvictableSamplingEntry> sample(int sampleCount)

Description copied from interface: SampleableEvictableStore

The sample method is used to sample a number of entries (defined by the samples parameter) from the internal data structure. This method should be executed in a constant time to deliver predictable timing results of the eviction system.

Specified by:

sample in interface SampleableEvictableStore<Data,CacheRecord>

Parameters:

sampleCount - Entry count to be sampled

Returns:

Multiple EvictionCandidate to be evicted