org.mapdb

Class DB.HTreeSetMaker

java.lang.Object

org.mapdb.DB.HTreeSetMaker

Enclosing class:

DB

public class DB.HTreeSetMaker
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	closeEngine
protected boolean	counter
protected ScheduledExecutorService	executor
protected long	executorPeriod
protected long	expire
protected long	expireAccess
protected long	expireMaxSize
protected long	expireStoreSize
protected long	expireTick
protected String	name
protected boolean	pumpIgnoreDuplicates
protected int	pumpPresortBatchSize
protected Iterator	pumpSource
protected Serializer<?>	serializer

Constructor Summary

Constructors

Constructor and Description
DB.HTreeSetMaker(String name)

Method Summary

Methods

Modifier and Type	Method and Description
protected DB.HTreeSetMaker	closeEngine()
DB.HTreeSetMaker	counterEnable() by default collection does not have counter, without counter updates are faster, but entire collection needs to be traversed to count items.
DB.HTreeSetMaker	executorEnable()
DB.HTreeSetMaker	executorEnable(ScheduledExecutorService executor)
DB.HTreeSetMaker	executorPeriod(long period)
DB.HTreeSetMaker	expireAfterAccess(long interval) Specifies that each entry should be automatically removed from the map once a fixed duration has elapsed after the entry's creation, the most recent replacement of its value, or its last access.
DB.HTreeSetMaker	expireAfterAccess(long interval, TimeUnit timeUnit) Specifies that each entry should be automatically removed from the map once a fixed duration has elapsed after the entry's creation, the most recent replacement of its value, or its last access.
DB.HTreeSetMaker	expireAfterWrite(long interval) Specifies that each entry should be automatically removed from the map once a fixed duration has elapsed after the entry's creation, or the most recent replacement of its value.
DB.HTreeSetMaker	expireAfterWrite(long interval, TimeUnit timeUnit) Specifies that each entry should be automatically removed from the map once a fixed duration has elapsed after the entry's creation, or the most recent replacement of its value.
DB.HTreeSetMaker	expireMaxSize(long maxSize) maximal number of entries in this map.
DB.HTreeSetMaker	expireStoreSize(double maxStoreSize) maximal size of store in GB, if store is larger entries will start expiring
DB.HTreeSetMaker	expireTick(long expireTick) Calling expiration cleanup too often reduces performance.
<K> Set<K>	make()
<K> Set<K>	makeOrGet()
DB.HTreeSetMaker	pumpIgnoreDuplicates() If source iteretor contains an duplicate key, exception is thrown.
DB.HTreeSetMaker	pumpPresort(int batchSize)
DB.HTreeSetMaker	pumpSource(Iterator<?> source)
DB.HTreeSetMaker	serializer(Serializer<?> serializer) keySerializer used to convert keys into/from binary form.

Methods inherited from class java.lang.Object

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

Field Detail

name

protected final String name

counter

protected boolean counter

serializer

protected Serializer<?> serializer

expireMaxSize

protected long expireMaxSize

expireStoreSize

protected long expireStoreSize

expire

protected long expire

expireAccess

protected long expireAccess

expireTick

protected long expireTick

pumpSource

protected Iterator pumpSource

pumpPresortBatchSize

protected int pumpPresortBatchSize

pumpIgnoreDuplicates

protected boolean pumpIgnoreDuplicates

closeEngine

protected boolean closeEngine

executor

protected ScheduledExecutorService executor

executorPeriod

protected long executorPeriod

Constructor Detail

DB.HTreeSetMaker

public DB.HTreeSetMaker(String name)

Method Detail

counterEnable

public DB.HTreeSetMaker counterEnable()

by default collection does not have counter, without counter updates are faster, but entire collection needs to be traversed to count items.

serializer

public DB.HTreeSetMaker serializer(Serializer<?> serializer)

keySerializer used to convert keys into/from binary form.

expireMaxSize

public DB.HTreeSetMaker expireMaxSize(long maxSize)

maximal number of entries in this map. Less used entries will be expired and removed to make collection smaller

expireStoreSize

public DB.HTreeSetMaker expireStoreSize(double maxStoreSize)

maximal size of store in GB, if store is larger entries will start expiring

expireAfterWrite

public DB.HTreeSetMaker expireAfterWrite(long interval,
                                TimeUnit timeUnit)

Specifies that each entry should be automatically removed from the map once a fixed duration has elapsed after the entry's creation, or the most recent replacement of its value.

expireAfterWrite

public DB.HTreeSetMaker expireAfterWrite(long interval)

Specifies that each entry should be automatically removed from the map once a fixed duration has elapsed after the entry's creation, or the most recent replacement of its value.

expireAfterAccess

public DB.HTreeSetMaker expireAfterAccess(long interval,
                                 TimeUnit timeUnit)

Specifies that each entry should be automatically removed from the map once a fixed duration has elapsed after the entry's creation, the most recent replacement of its value, or its last access. Access time is reset by all map read and write operations

expireAfterAccess

public DB.HTreeSetMaker expireAfterAccess(long interval)

Specifies that each entry should be automatically removed from the map once a fixed duration has elapsed after the entry's creation, the most recent replacement of its value, or its last access. Access time is reset by all map read and write operations

expireTick

public DB.HTreeSetMaker expireTick(long expireTick)

Calling expiration cleanup too often reduces performance. This is minimal interval between cleanups. Larger value could cause OutOfMemoryError if values are not released fast enough. Default value is 1000ms

Parameters:

expireTick - minimal time between expiration cleanup in milliseconds

Returns:

this

pumpSource

public DB.HTreeSetMaker pumpSource(Iterator<?> source)

pumpIgnoreDuplicates

public DB.HTreeSetMaker pumpIgnoreDuplicates()

If source iteretor contains an duplicate key, exception is thrown. This options will only use firts key and ignore any consequentive duplicates.

pumpPresort

public DB.HTreeSetMaker pumpPresort(int batchSize)

executorEnable

public DB.HTreeSetMaker executorEnable()

executorEnable

public DB.HTreeSetMaker executorEnable(ScheduledExecutorService executor)

executorPeriod

public DB.HTreeSetMaker executorPeriod(long period)

closeEngine

protected DB.HTreeSetMaker closeEngine()

make

public <K> Set<K> make()

makeOrGet

public <K> Set<K> makeOrGet()