hu.netmind.beankeeper.helper
Class TransactionalMap

java.lang.Object
  hu.netmind.beankeeper.helper.TransactionalMap

All Implemented Interfaces:

PersistenceEventListener, java.util.Map

public class TransactionalMap
extends java.lang.Object
implements java.util.Map, PersistenceEventListener

This map implementation takes transactions into account when getting and settings values. This means, that values set into the map are only visible to the same transaction which set them, until the commit, in which case the value becomes visible to all. If the transaction rolled back, the set values are simply dropped. Be sure to close this map if you don't use it.
Note: This implementation is not thread-safe, and supports modifications from only one transaction at any given time.

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

java.util.Map.Entry<K,V>

Constructor Summary

TransactionalMap(Store store)
Construct a transactional map.

Method Summary

void	clear()
void	close() Close this map, deregister from transaction listener.
boolean	containsKey(java.lang.Object key)
boolean	containsValue(java.lang.Object value)
java.util.Set	entrySet()
boolean	equals(java.lang.Object o)
java.lang.Object	get(java.lang.Object key)
void	handle(PersistenceEvent event) Listen for transaction events.
int	hashCode()
boolean	isEmpty()
java.util.Set	keySet()
java.lang.Object	put(java.lang.Object key, java.lang.Object value)
void	putAll(java.util.Map m)
java.lang.Object	remove(java.lang.Object key)
int	size()
java.util.Collection	values()

Methods inherited from class java.lang.Object

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

Constructor Detail

TransactionalMap

public TransactionalMap(Store store)

Construct a transactional map. This map listens for persistence events, and commits or rolls back internal operations according to transaction events.

Method Detail

clear

public void clear()

Specified by:

clear in interface java.util.Map

containsKey

public boolean containsKey(java.lang.Object key)

Specified by:

containsKey in interface java.util.Map

containsValue

public boolean containsValue(java.lang.Object value)

Specified by:

containsValue in interface java.util.Map

entrySet

public java.util.Set entrySet()

Specified by:

entrySet in interface java.util.Map

equals

public boolean equals(java.lang.Object o)

Specified by:

equals in interface java.util.Map

Overrides:

equals in class java.lang.Object

get

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

Specified by:

get in interface java.util.Map

hashCode

public int hashCode()

Specified by:

hashCode in interface java.util.Map

Overrides:

hashCode in class java.lang.Object

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface java.util.Map

keySet

public java.util.Set keySet()

Specified by:

keySet in interface java.util.Map

put

public java.lang.Object put(java.lang.Object key,
                            java.lang.Object value)

Specified by:

put in interface java.util.Map

putAll

public void putAll(java.util.Map m)

Specified by:

putAll in interface java.util.Map

remove

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

Specified by:

remove in interface java.util.Map

size

public int size()

Specified by:

size in interface java.util.Map

values

public java.util.Collection values()

Specified by:

values in interface java.util.Map

close

public void close()

Close this map, deregister from transaction listener.

handle

public void handle(PersistenceEvent event)

Listen for transaction events.

Specified by:

handle in interface PersistenceEventListener