org.jpos.space

Class TSpace<K,V>

java.lang.Object

org.jpos.space.TSpace<K,V>

All Implemented Interfaces:

java.lang.Runnable, LocalSpace<K,V>, Space<K,V>, Loggeable

public class TSpace<K,V>
extends java.lang.Object
implements LocalSpace<K,V>, Loggeable, java.lang.Runnable

TSpace implementation

Since:

!.4.9

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.Map	entries
static long	GCDELAY
protected TSpace	sl

Constructor Summary

Constructors

Constructor and Description
TSpace()

Method Summary

Modifier and Type	Method and Description
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.
void	dump(java.io.PrintStream p, java.lang.String indent)
boolean	existAny(K[] keys)
boolean	existAny(K[] keys, long timeout)
void	gc()
java.util.Map	getEntries() unstandard method (required for space replication) - use with care
java.lang.String	getKeysAsString()
java.util.Set<K>	getKeySet()
V	in(java.lang.Object key) Take an entry from the space, waiting forever until one exists.
V	in(java.lang.Object key, long timeout) Take an entry from the space, waiting a limited amount of time until one exists.
V	inp(java.lang.Object key) In probe takes an entry from the space if one exists, return null otherwise.
boolean	isEmpty()
void	notifyListeners(java.lang.Object key, java.lang.Object value)
void	nrd(java.lang.Object key) Nrd (not read) waits forever until Key is not present in space Resolution for expiring entries is implementation dependant, but a minimum one-second is suggested.
V	nrd(java.lang.Object key, long timeout) Nrd (not read) waits up to timeout until Key is not present in space Resolution for expiring entries is implementation dependant, but a minimum one-second is suggested.
void	out(K key, V value) Write a new entry into the Space
void	out(K key, V value, long timeout) Write a new entry into the Space, with an timeout value
void	push(K key, V value) Write a new entry at the head of a queue.
void	push(K key, V value, long timeout) Write a new entry at the head of the queue with a timeout value
void	put(K key, V value) Write a single entry at the head of the queue discarding the other entries
void	put(K key, V value, long timeout) Write a single entry at the head of the queue discarding the other entries, with timeout.
V	rd(java.lang.Object key) Read an entry from the space, waiting forever until one exists.
V	rd(java.lang.Object key, long timeout) Read an entry from the space, waiting a limited amount of time until one exists.
V	rdp(java.lang.Object key) Read probe reads an entry from the space if one exists, return null otherwise.
void	removeListener(java.lang.Object key, SpaceListener listener) removes a SpaceListener associated with a given key
void	run()
void	setEntries(java.util.Map entries) unstandard method (required for space replication) - use with care
int	size(java.lang.Object key)

Methods inherited from class java.lang.Object

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

Field Detail

entries

protected java.util.Map entries

sl

protected TSpace sl

GCDELAY

public static final long GCDELAY

See Also:

Constant Field Values

Constructor Detail

TSpace

public TSpace()

Method Detail

out

public void out(K key,
                V value)

Description copied from interface: Space

Write a new entry into the Space

Specified by:

out in interface Space<K,V>

Parameters:

key - Entry's key

value - Object value

out

public void out(K key,
                V 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<K,V>

Parameters:

key - Entry's key

value - Object value

timeout - timeout value in millis

rdp

public V 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<K,V>

Parameters:

key - Entry's key

Returns:

value or null

inp

public V 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<K,V>

Parameters:

key - Entry's key

Returns:

value or null

in

public V 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<K,V>

Parameters:

key - Entry's key

Returns:

value

in

public V 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<K,V>

Parameters:

key - Entry's key

timeout - millis to wait

Returns:

value or null

rd

public V 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<K,V>

Parameters:

key - Entry's key

Returns:

value

rd

public V 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<K,V>

Parameters:

key - Entry's key

timeout - millis to wait

Returns:

value or null

nrd

public void nrd(java.lang.Object key)

Description copied from interface: Space

Nrd (not read) waits forever until Key is not present in space Resolution for expiring entries is implementation dependant, but a minimum one-second is suggested.

Specified by:

nrd in interface Space<K,V>

Parameters:

key - Entry's key

nrd

public V nrd(java.lang.Object key,
             long timeout)

Description copied from interface: Space

Nrd (not read) waits up to timeout until Key is not present in space Resolution for expiring entries is implementation dependant, but a minimum one-second is suggested.

Specified by:

nrd in interface Space<K,V>

Parameters:

key - Entry's key

timeout - millis to wait

Returns:

value or null

run

public void run()

Specified by:

run in interface java.lang.Runnable

gc

public void gc()

size

public int size(java.lang.Object key)

Specified by:

size in interface LocalSpace<K,V>

Returns:

number of entries in a given key

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<K,V>

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<K,V>

Parameters:

key - Entry's key

listener - a SpaceListener

timeout - listener registration timeout in millis

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<K,V>

Parameters:

key - Entry's key

listener - the SpaceListener

isEmpty

public boolean isEmpty()

getKeySet

public java.util.Set<K> getKeySet()

Specified by:

getKeySet in interface LocalSpace<K,V>

Returns:

Set containing all keys in Space

getKeysAsString

public java.lang.String getKeysAsString()

dump

public void dump(java.io.PrintStream p,
                 java.lang.String indent)

Specified by:

dump in interface Loggeable

notifyListeners

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

push

public void push(K key,
                 V value)

Description copied from interface: Space

Write a new entry at the head of a queue.

Specified by:

push in interface Space<K,V>

Parameters:

key - Entry's key

value - Object value

push

public void push(K key,
                 V 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<K,V>

Parameters:

key - Entry's key

value - Object value

timeout - timeout value in millis

put

public void put(K key,
                V value)

Description copied from interface: Space

Write a single entry at the head of the queue discarding the other entries

Specified by:

put in interface Space<K,V>

Parameters:

key - Entry's key

value - Object value

put

public void put(K key,
                V value,
                long timeout)

Description copied from interface: Space

Write a single entry at the head of the queue discarding the other entries, with timeout.

Specified by:

put in interface Space<K,V>

Parameters:

key - Entry's key

value - Object value

timeout - timeout value in millis

existAny

public boolean existAny(K[] keys)

Specified by:

existAny in interface Space<K,V>

Parameters:

keys - array of keys to check

Returns:

true if one or more keys are available in the space

existAny

public boolean existAny(K[] keys,
                        long timeout)

Specified by:

existAny in interface Space<K,V>

Parameters:

keys - array of keys to check

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

Returns:

true if one or more keys are available in the space

getEntries

public java.util.Map getEntries()

unstandard method (required for space replication) - use with care

Returns:

underlying entry map

setEntries

public void setEntries(java.util.Map entries)

unstandard method (required for space replication) - use with care

Parameters:

entries - underlying entry map