com.espertech.esper.client

Enum ConfigurationCacheReferenceType

java.lang.Object

java.lang.Enum<ConfigurationCacheReferenceType>

com.espertech.esper.client.ConfigurationCacheReferenceType

All Implemented Interfaces:

Serializable, Comparable<ConfigurationCacheReferenceType>

public enum ConfigurationCacheReferenceType
extends Enum<ConfigurationCacheReferenceType>

Enum indicating what kind of references are used to store the cache map's keys and values.

Enum Constant Summary

Enum Constants

Enum Constant and Description
HARD Constant indicating that hard references should be used.
SOFT Constant indicating that soft references should be used.
WEAK Constant indicating that weak references should be used.

Method Summary

Modifier and Type	Method and Description
static ConfigurationCacheReferenceType	getDefault() The default policy is set to WEAK to reduce the chance that out-of-memory errors occur as caches fill, and stay backwards compatible with prior Esper releases.
static ConfigurationCacheReferenceType	valueOf(String name) Returns the enum constant of this type with the specified name.
static ConfigurationCacheReferenceType[]	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

HARD

public static final ConfigurationCacheReferenceType HARD

Constant indicating that hard references should be used.

Does not allow garbage collection to remove cache entries.

SOFT

public static final ConfigurationCacheReferenceType SOFT

Constant indicating that soft references should be used.

Allows garbage collection to remove cache entries only after all weak references have been collected.

WEAK

public static final ConfigurationCacheReferenceType WEAK

Constant indicating that weak references should be used.

Allows garbage collection to remove cache entries.

Method Detail

values

public static ConfigurationCacheReferenceType[] 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 (ConfigurationCacheReferenceType c : ConfigurationCacheReferenceType.values())
    System.out.println(c);

Returns:

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

valueOf

public static ConfigurationCacheReferenceType 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

getDefault

public static ConfigurationCacheReferenceType getDefault()

The default policy is set to WEAK to reduce the chance that out-of-memory errors occur as caches fill, and stay backwards compatible with prior Esper releases.

Returns:

default reference type