org.mapdb

Class Store.Cache.HardRef

java.lang.Object

org.mapdb.Store.Cache

org.mapdb.Store.Cache.HardRef

Enclosing class:

Store.Cache

public static final class Store.Cache.HardRef
extends Store.Cache

Cache created objects using hard reference. It checks free memory every N operations (1024*10). If free memory is bellow 75% it clears the cache

Author:

Jan Kotek

Nested Class Summary

Nested classes/interfaces inherited from class org.mapdb.Store.Cache

Store.Cache.HardRef, Store.Cache.HashTable, Store.Cache.LRU, Store.Cache.WeakSoftRef

Field Summary

Fields

Modifier and Type	Field and Description
protected Store.LongObjectMap	cache
protected static int	CHECK_EVERY_N
protected int	counter
protected ScheduledExecutorService	executor
protected long	executorPeriod
protected int	initialCapacity

Fields inherited from class org.mapdb.Store.Cache

cacheHitCounter, cacheMissCounter, lock, NULL

Constructor Summary

Constructors

Constructor and Description
Store.Cache.HardRef(int initialCapacity, boolean disableLocks, ScheduledExecutorService executor, long executorPeriod)

Method Summary

Methods

Modifier and Type	Method and Description
void	clear()
void	close()
Object	get(long recid)
Store.Cache	newCacheForOtherSegment()
void	put(long recid, Object item)

Methods inherited from class org.mapdb.Store.Cache

metricsCacheHit, metricsCacheMiss

Methods inherited from class java.lang.Object

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

Field Detail

CHECK_EVERY_N

protected static final int CHECK_EVERY_N

See Also:

Constant Field Values

counter

protected int counter

cache

protected final Store.LongObjectMap cache

initialCapacity

protected final int initialCapacity

executor

protected final ScheduledExecutorService executor

executorPeriod

protected final long executorPeriod

Constructor Detail

Store.Cache.HardRef

public Store.Cache.HardRef(int initialCapacity,
                   boolean disableLocks,
                   ScheduledExecutorService executor,
                   long executorPeriod)

Method Detail

get

public Object get(long recid)

Specified by:

get in class Store.Cache

put

public void put(long recid,
       Object item)

Specified by:

put in class Store.Cache

clear

public void clear()

Specified by:

clear in class Store.Cache

close

public void close()

Specified by:

close in class Store.Cache

newCacheForOtherSegment

public Store.Cache newCacheForOtherSegment()

Specified by:

newCacheForOtherSegment in class Store.Cache