com.hazelcast.elastic.map

Class SampleableElasticHashMap<V extends com.hazelcast.memory.MemoryBlock>

java.lang.Object

com.hazelcast.elastic.map.BinaryElasticHashMap<V>

com.hazelcast.elastic.map.SampleableElasticHashMap<V>

Type Parameters:

V - type of value

All Implemented Interfaces:

com.hazelcast.elastic.map.ElasticMap<com.hazelcast.nio.serialization.Data,V>, com.hazelcast.nio.Disposable, Map<com.hazelcast.nio.serialization.Data,V>

Direct Known Subclasses:

DefaultHiDensityRecordMap, HDStorageSCHM

public class SampleableElasticHashMap<V extends com.hazelcast.memory.MemoryBlock>
extends BinaryElasticHashMap<V>

Variant of the BinaryElasticHashMap that allows quick random sampling of its entries.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	SampleableElasticHashMap.IterableSamplingEntry Iterable sampling entry to prevent from extra object creation for iteration.
class	SampleableElasticHashMap.SamplingEntry Entry to define keys and values for sampling.

Nested classes/interfaces inherited from class com.hazelcast.elastic.map.BinaryElasticHashMap

BinaryElasticHashMap.KeyIter, BinaryElasticHashMap.MapEntry, BinaryElasticHashMap.RandomKeyIter, BinaryElasticHashMap.RandomValueIter, BinaryElasticHashMap.ValueIter

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

Map.Entry<K,V>

Field Summary

Fields inherited from class com.hazelcast.elastic.map.BinaryElasticHashMap

accessor, HEADER_LENGTH_IN_BYTES, memoryBlockProcessor

Constructor Summary

Constructors

Constructor and Description
SampleableElasticHashMap(EnterpriseSerializationService serializationService, com.hazelcast.memory.MemoryBlockAccessor<V> memoryBlockAccessor, com.hazelcast.internal.memory.MemoryAllocator malloc)
SampleableElasticHashMap(int initialCapacity, EnterpriseSerializationService serializationService, com.hazelcast.memory.MemoryBlockAccessor<V> memoryBlockAccessor, com.hazelcast.internal.memory.MemoryAllocator malloc)
SampleableElasticHashMap(int initialCapacity, float loadFactor, EnterpriseSerializationService serializationService, com.hazelcast.memory.MemoryBlockAccessor<V> memoryBlockAccessor, com.hazelcast.internal.memory.MemoryAllocator malloc)
SampleableElasticHashMap(int initialCapacity, float loadFactor, MemoryBlockProcessor<V> memoryBlockProcessor)
SampleableElasticHashMap(int initialCapacity, MemoryBlockProcessor<V> memoryBlockProcessor)

Method Summary

Modifier and Type	Method and Description
protected <E extends SampleableElasticHashMap.SamplingEntry> E	createSamplingEntry(int slot)
<E extends SampleableElasticHashMap.SamplingEntry> Iterable<E>	getRandomSamples(int sampleCount)

Methods inherited from class com.hazelcast.elastic.map.BinaryElasticHashMap

capacity, clear, containsKey, containsValue, delete, dispose, entryIter, entryIter, entrySet, get, getIfSameKey, getNativeKeyAddress, isEmpty, keyIter, keySet, loadFromOffHeapHeader, newRandomEvictionKeyIterator, newRandomEvictionValueIterator, onOome, put, putAll, putIfAbsent, readV, remove, remove, replace, replace, set, size, storeHeaderOffHeap, toString, valueIter, valueIter, values

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, equals, forEach, getOrDefault, hashCode, merge, replaceAll

Constructor Detail

SampleableElasticHashMap

public SampleableElasticHashMap(EnterpriseSerializationService serializationService,
                                com.hazelcast.memory.MemoryBlockAccessor<V> memoryBlockAccessor,
                                com.hazelcast.internal.memory.MemoryAllocator malloc)

SampleableElasticHashMap

public SampleableElasticHashMap(int initialCapacity,
                                EnterpriseSerializationService serializationService,
                                com.hazelcast.memory.MemoryBlockAccessor<V> memoryBlockAccessor,
                                com.hazelcast.internal.memory.MemoryAllocator malloc)

SampleableElasticHashMap

public SampleableElasticHashMap(int initialCapacity,
                                float loadFactor,
                                EnterpriseSerializationService serializationService,
                                com.hazelcast.memory.MemoryBlockAccessor<V> memoryBlockAccessor,
                                com.hazelcast.internal.memory.MemoryAllocator malloc)

SampleableElasticHashMap

public SampleableElasticHashMap(int initialCapacity,
                                MemoryBlockProcessor<V> memoryBlockProcessor)

SampleableElasticHashMap

public SampleableElasticHashMap(int initialCapacity,
                                float loadFactor,
                                MemoryBlockProcessor<V> memoryBlockProcessor)

Method Detail

createSamplingEntry

protected <E extends SampleableElasticHashMap.SamplingEntry> E createSamplingEntry(int slot)

getRandomSamples

public <E extends SampleableElasticHashMap.SamplingEntry> Iterable<E> getRandomSamples(int sampleCount)