com.enterprisemath.utils.cache

Class ExpiringInMemoryObjectCache

java.lang.Object

com.enterprisemath.utils.cache.ExpiringInMemoryObjectCache

All Implemented Interfaces:

ObjectCache

public class ExpiringInMemoryObjectCache
extends Object
implements ObjectCache

Implementation of object cache which stores everything in memory and objects expires after defined period of time.

Author:

radek.hecl

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ExpiringInMemoryObjectCache.Builder Builder object.

Constructor Summary

Constructors

Constructor and Description
ExpiringInMemoryObjectCache(ExpiringInMemoryObjectCache.Builder builder) Creates new instance.

Method Summary

Modifier and Type	Method and Description
void	clear() Clears the cache, all objects are removed.
static ExpiringInMemoryObjectCache	create(int expireTimeout, boolean renewOnGet) Creates new instance.
Object	get(String key) Retrieves object.
Object	get(String key, Object def) Returns object in the non strict manner.
Set<String>	getKeys() Returns all keys which are in use.
void	put(String key, Object object) Puts object into cache.
void	remove(String key) Removes the specified key.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

ExpiringInMemoryObjectCache

public ExpiringInMemoryObjectCache(ExpiringInMemoryObjectCache.Builder builder)

Creates new instance.

Parameters:

builder - builder object

Method Detail

put

public void put(String key,
                Object object)

Description copied from interface: ObjectCache

Puts object into cache. If object with the same key exists, then it is are overridden.

Specified by:

put in interface ObjectCache

Parameters:

key - data key

object - object

remove

public void remove(String key)

Description copied from interface: ObjectCache

Removes the specified key.

Specified by:

remove in interface ObjectCache

Parameters:

key - key

get

public Object get(String key)

Description copied from interface: ObjectCache

Retrieves object.

Specified by:

get in interface ObjectCache

Parameters:

key - data key

Returns:

object

get

public Object get(String key,
                  Object def)

Description copied from interface: ObjectCache

Returns object in the non strict manner. Default value is returned if key doesn't exists.

Specified by:

get in interface ObjectCache

Parameters:

key - key

def - default value returned if key doesn't exists

Returns:

object or default value

getKeys

public Set<String> getKeys()

Description copied from interface: ObjectCache

Returns all keys which are in use.

Specified by:

getKeys in interface ObjectCache

Returns:

all keys which are in use

clear

public void clear()

Description copied from interface: ObjectCache

Clears the cache, all objects are removed.

Specified by:

clear in interface ObjectCache

toString

public String toString()

Overrides:

toString in class Object

create

public static ExpiringInMemoryObjectCache create(int expireTimeout,
                                                 boolean renewOnGet)

Creates new instance.

Parameters:

expireTimeout - timeout for object expiration, in milliseconds

renewOnGet - whether timeout should be renewed on get

Returns:

created instance