org.jpos.space
Class PersistentSpace

java.lang.Object
  org.jpos.space.PersistentSpace

All Implemented Interfaces:

LocalSpace, Space

public class PersistentSpace
extends java.lang.Object
implements LocalSpace

Persistent Space implementation

Since:

2.0

Version:

$Revision: 2777 $ $Date: 2009-09-18 19:27:08 -0700 (Fri, 18 Sep 2009) $

Author:

Alejandro Revilla, modified by Kris Leite for Persistent

Constructor Summary

PersistentSpace()

Method Summary

void	addListener(java.lang.Object key, SpaceListener listener) add a SpaceListener associated with a given key
void	addListener(java.lang.Object key, SpaceListener listener, long timeout) add a SpaceListener associated with a given key for a given period of time.
boolean	existAny(java.lang.Object[] keys)
boolean	existAny(java.lang.Object[] keys, long timeout)
java.lang.String	getKeys()
java.util.Set	getKeySet()
static LocalSpace	getSpace()
static LocalSpace	getSpace(java.lang.String spaceName)
java.lang.Object	in(java.lang.Object key) Take an entry from the space, waiting forever until one exists.
java.lang.Object	in(java.lang.Object key, long timeout) Take an entry from the space, waiting a limited amount of time until one exists.
java.lang.Object	inp(java.lang.Object key) In probe takes an entry from the space if one exists, return null otherwise.
void	out(java.lang.Object key, java.lang.Object value) Write a new entry into the Space
void	out(java.lang.Object id, java.lang.Object value, long timeout) Write a new entry into the Space, with an timeout value
void	push(java.lang.Object id, java.lang.Object value) Write a new entry at the head of a queue.
void	push(java.lang.Object id, java.lang.Object value, long timeout) Write a new entry at the head of the queue with a timeout value
java.lang.Object	rd(java.lang.Object key) Read an entry from the space, waiting forever until one exists.
java.lang.Object	rd(java.lang.Object key, long timeout) Read an entry from the space, waiting a limited amount of time until one exists.
java.lang.Object	rdp(java.lang.Object key) Read probe reads an entry from the space if one exists, return null otherwise.
java.lang.String	read(java.lang.String key)
void	removeListener(java.lang.Object key, SpaceListener listener) removes a SpaceListener associated with a given key
void	setCacheSize(int cacheSize)
int	size(java.lang.Object key)
void	write(java.lang.String key, java.lang.String value)

Methods inherited from class java.lang.Object

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

Constructor Detail

PersistentSpace

public PersistentSpace()

Method Detail

setCacheSize

public void setCacheSize(int cacheSize)

out

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

Description copied from interface: Space

Write a new entry into the Space

Specified by:

out in interface Space

Parameters:

key - Entry's key

value - Object value

out

public void out(java.lang.Object id,
                java.lang.Object value,
                long timeout)

Description copied from interface: Space

Write a new entry into the Space, with an timeout value

Specified by:

out in interface Space

Parameters:

id - Entry's key

value - Object value

timeout - timeout value

size

public int size(java.lang.Object key)

Specified by:

size in interface LocalSpace

Returns:

number of entries in a given key

rdp

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

Description copied from interface: Space

Read probe reads an entry from the space if one exists, return null otherwise.

Specified by:

rdp in interface Space

Parameters:

key - Entry's key

Returns:

value or null

inp

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

Description copied from interface: Space

In probe takes an entry from the space if one exists, return null otherwise.

Specified by:

inp in interface Space

Parameters:

key - Entry's key

Returns:

value or null

in

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

Description copied from interface: Space

Take an entry from the space, waiting forever until one exists.

Specified by:

in in interface Space

Parameters:

key - Entry's key

Returns:

value

in

public java.lang.Object in(java.lang.Object key,
                           long timeout)

Description copied from interface: Space

Take an entry from the space, waiting a limited amount of time until one exists.

Specified by:

in in interface Space

Parameters:

key - Entry's key

timeout - millis to wait

Returns:

value or null

rd

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

Description copied from interface: Space

Read an entry from the space, waiting forever until one exists.

Specified by:

rd in interface Space

Parameters:

key - Entry's key

Returns:

value

rd

public java.lang.Object rd(java.lang.Object key,
                           long timeout)

Description copied from interface: Space

Read an entry from the space, waiting a limited amount of time until one exists.

Specified by:

rd in interface Space

Parameters:

key - Entry's key

timeout - millis to wait

Returns:

value or null

addListener

public void addListener(java.lang.Object key,
                        SpaceListener listener)

Description copied from interface: LocalSpace

add a SpaceListener associated with a given key

Specified by:

addListener in interface LocalSpace

Parameters:

key - Entry's key

listener - a SpaceListener

addListener

public void addListener(java.lang.Object key,
                        SpaceListener listener,
                        long timeout)

Description copied from interface: LocalSpace

add a SpaceListener associated with a given key for a given period of time. Warning: not supported by all space implementations.

Specified by:

addListener in interface LocalSpace

Parameters:

key - Entry's key

listener - a SpaceListener

removeListener

public void removeListener(java.lang.Object key,
                           SpaceListener listener)

Description copied from interface: LocalSpace

removes a SpaceListener associated with a given key

Specified by:

removeListener in interface LocalSpace

Parameters:

key - Entry's key

listener - the SpaceListener

getSpace

public static final LocalSpace getSpace()

getSpace

public static final LocalSpace getSpace(java.lang.String spaceName)

getKeySet

public java.util.Set getKeySet()

Specified by:

getKeySet in interface LocalSpace

Returns:

Set containing all keys in Space

getKeys

public java.lang.String getKeys()

write

public void write(java.lang.String key,
                  java.lang.String value)

read

public java.lang.String read(java.lang.String key)

push

public void push(java.lang.Object id,
                 java.lang.Object value)

Description copied from interface: Space

Write a new entry at the head of a queue.

Specified by:

push in interface Space

Parameters:

id - Entry's key

value - Object value

push

public void push(java.lang.Object id,
                 java.lang.Object value,
                 long timeout)

Description copied from interface: Space

Write a new entry at the head of the queue with a timeout value

Specified by:

push in interface Space

Parameters:

id - Entry's key

value - Object value

timeout - timeout value

existAny

public boolean existAny(java.lang.Object[] keys)

Specified by:

existAny in interface Space

Parameters:

keys - array of keys to check

Returns:

true if one or more keys are available in the space

existAny

public boolean existAny(java.lang.Object[] keys,
                        long timeout)

Specified by:

existAny in interface Space

Parameters:

keys - array of keys to check

timeout - to wait for any of the entries to become available

Returns:

true if one or more keys are available in the space