org.apache.excalibur.store.impl

Class MemoryStore

java.lang.Object

org.apache.avalon.framework.logger.AbstractLogEnabled

org.apache.excalibur.store.impl.MemoryStore

All Implemented Interfaces:

org.apache.avalon.framework.component.Component, org.apache.avalon.framework.logger.LogEnabled, org.apache.avalon.framework.thread.ThreadSafe, Store

public class MemoryStore
extends org.apache.avalon.framework.logger.AbstractLogEnabled
implements Store, org.apache.avalon.framework.thread.ThreadSafe, org.apache.avalon.framework.component.Component

Version:

CVS $Id: MemoryStore.java,v 1.4 2004/02/28 11:47:31 cziegeler Exp $

Author:

Avalon Development Team

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.Hashtable	m_table The shared store

Fields inherited from interface org.apache.excalibur.store.Store

PERSISTENT_STORE, ROLE, TRANSIENT_STORE

Constructor Summary

Constructors

Constructor and Description
MemoryStore()

Method Summary

Methods

Modifier and Type	Method and Description
void	clear() Clear the Store of all elements
boolean	containsKey(java.lang.Object key) Indicates if the given key is associated to a contained object.
void	free() Try to free some used memory.
java.lang.Object	get(java.lang.Object key) Get the object associated to the given unique key.
java.util.Enumeration	keys() Returns the list of used keys as an Enumeration of Objects.
void	remove(java.lang.Object key) Remove the object associated to the given key.
int	size() Returns count of the objects in the store, or -1 if could not be obtained.
void	store(java.lang.Object key, java.lang.Object value) Store the given object in a persistent state.

Methods inherited from class org.apache.avalon.framework.logger.AbstractLogEnabled

enableLogging, getLogger, setupLogger, setupLogger, setupLogger

Methods inherited from class java.lang.Object

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

Field Detail

m_table

protected java.util.Hashtable m_table

The shared store

Constructor Detail

MemoryStore

public MemoryStore()

Method Detail

get

public java.lang.Object get(java.lang.Object key)

Get the object associated to the given unique key.

Specified by:

get in interface Store

store

public void store(java.lang.Object key,
         java.lang.Object value)

Store the given object in a persistent state. It is up to the caller to ensure that the key has a persistent state across different JVM executions.

Specified by:

store in interface Store

remove

public void remove(java.lang.Object key)

Remove the object associated to the given key.

Specified by:

remove in interface Store

clear

public void clear()

Clear the Store of all elements

Specified by:

clear in interface Store

free

public void free()

Description copied from interface: Store

Try to free some used memory. The transient store can simply remove some hold data, the persistent store can free all memory by writing the data to a persistent store etc.

Specified by:

free in interface Store

containsKey

public boolean containsKey(java.lang.Object key)

Indicates if the given key is associated to a contained object.

Specified by:

containsKey in interface Store

keys

public java.util.Enumeration keys()

Returns the list of used keys as an Enumeration of Objects.

Specified by:

keys in interface Store

size

public int size()

Returns count of the objects in the store, or -1 if could not be obtained.

Specified by:

size in interface Store