com.evanmclean.evlib.cache
Enum CacheReferenceType

java.lang.Object
  java.lang.Enum<CacheReferenceType>
      com.evanmclean.evlib.cache.CacheReferenceType

All Implemented Interfaces:

Serializable, Comparable<CacheReferenceType>

public enum CacheReferenceType
extends Enum<CacheReferenceType>

Indicates how values in a ConcurrentHashMapCache are referenced.

Author:

Evan M^cLean M^cLean Computer Services (see the overview for copyright and licensing.)

Enum Constant Summary

SOFT
Value is wrapped with a SoftReference.

STRONG
Value is kept in the cache until it expires or is explicitly removed.

WEAK
Value is wrapped with a WeakReference.

Method Summary

static CacheReferenceType	valueOf(String name) Returns the enum constant of this type with the specified name.
static CacheReferenceType[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

STRONG

public static final CacheReferenceType STRONG

Value is kept in the cache until it expires or is explicitly removed.

SOFT

public static final CacheReferenceType SOFT

Value is wrapped with a SoftReference. If you want caches that will drop values when memory gets tight, this is probably the one you want.

WEAK

public static final CacheReferenceType WEAK

Value is wrapped with a WeakReference.

Method Detail

values

public static CacheReferenceType[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (CacheReferenceType c : CacheReferenceType.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static CacheReferenceType valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null