net.sf.ehcache.store
Class MemoryStoreEvictionPolicy

java.lang.Object
  net.sf.ehcache.store.MemoryStoreEvictionPolicy

All Implemented Interfaces:

Serializable

public final class MemoryStoreEvictionPolicy
extends Object
implements Serializable

A typesafe enumeration of eviction policies. The policy used to evict elements from the MemoryStore. This can be one of:

1. LRU - least recently used
2. LFU - least frequently used
3. FIFO - first in first out, the oldest element by creation time

The default value is LRU

Since:

1.2

Version:

$Id: MemoryStoreEvictionPolicy.java 5594 2012-05-07 16:04:31Z cdennis $

Author:

Greg Luck

See Also:

Serialized Form

Nested Class Summary

static class

MemoryStoreEvictionPolicy.MemoryStoreEvictionPolicyEnum Enum for MemoryStoreEvictionPolicy

Field Summary

static MemoryStoreEvictionPolicy	CLOCK FIFO - first in first out, the oldest element by creation time.
static MemoryStoreEvictionPolicy	FIFO FIFO - first in first out, the oldest element by creation time.
static MemoryStoreEvictionPolicy	LFU LFU - least frequently used.
static MemoryStoreEvictionPolicy	LRU LRU - least recently used.

Method Summary

static MemoryStoreEvictionPolicy	fromString(String policy) Converts a string representation of the policy into a policy.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

LRU

public static final MemoryStoreEvictionPolicy LRU

LRU - least recently used.

LFU

public static final MemoryStoreEvictionPolicy LFU

LFU - least frequently used.

FIFO

public static final MemoryStoreEvictionPolicy FIFO

FIFO - first in first out, the oldest element by creation time.

CLOCK

public static final MemoryStoreEvictionPolicy CLOCK

FIFO - first in first out, the oldest element by creation time.

Method Detail

toString

public String toString()

Overrides:

toString in class Object

Returns:

a String representation of the policy

fromString

public static MemoryStoreEvictionPolicy fromString(String policy)

Converts a string representation of the policy into a policy.

Parameters:

policy - either LRU, LFU or FIFO

Returns:

one of the static instances