de.caluga.morphium.cache

Class CacheSynchronizer

java.lang.Object

de.caluga.morphium.MorphiumStorageAdapter<Object>

de.caluga.morphium.cache.CacheSynchronizer

All Implemented Interfaces:

MessageListener, MorphiumStorageListener<Object>

public class CacheSynchronizer
extends MorphiumStorageAdapter<Object>
implements MessageListener

User: Stephan Bösebeck Date: 27.05.12 Time: 14:14

Connects to the Messaging system and to morphium. As soon as there is a message coming with name "cacheSync", this is responsible for clearing the local cache for this entity. Messaging used:

• Msg.name == Always cacheSync
• Msg.type == Always multi - more than one node may listen to those messages
• Msg.msg == The messag is the Reason for clearing (delete, store, user interaction...)
• Msg.value == String, name of the class whose cache should be cleared
• Msg.additional == always null
• Msg.ttl == 30 sec - shoule be enought time for the message to be processed by all nodes

Nested Class Summary

Nested classes/interfaces inherited from interface de.caluga.morphium.MorphiumStorageListener

MorphiumStorageListener.UpdateTypes

Field Summary

Fields

Modifier and Type	Field and Description
static String	CACHE_SYNC_RECORD
static String	CACHE_SYNC_TYPE

Constructor Summary

Constructors

Constructor and Description
CacheSynchronizer(Messaging msg, Morphium morphium)

Method Summary

Methods

Modifier and Type	Method and Description
void	addSyncListener(CacheSyncListener cl)
void	addSyncListener(Class type, CacheSyncListener cl)
void	detach()
void	firePostClearEvent(Class type, Msg m)
void	firePostSendEvent(Class type, Msg m)
void	firePreSendEvent(Class type, Msg m)
boolean	isAttached()
Msg	onMessage(Messaging msg, Msg m) process message, send answer if null is returned, no answer is sent
void	postDrop(Morphium m, Class cls)
void	postRemove(Morphium m, Query q)
void	postStore(Morphium m, Object r, boolean isNew)
void	postUpdate(Morphium m, Class cls, Enum updateType)
void	preDrop(Morphium m, Class cls)
void	removeSyncListener(CacheSyncListener cl)
void	removeSyncListener(Class type, CacheSyncListener cl)
void	sendClearAllMessage(String reason)
void	sendClearMessage(Class type, String reason) sends message if necessary
void	sendClearMessage(Object record, String reason, boolean isNew)

Methods inherited from class de.caluga.morphium.MorphiumStorageAdapter

postLoad, postRemove, preDelete, preRemove, preStore, preUpdate

Methods inherited from class java.lang.Object

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

Field Detail

CACHE_SYNC_TYPE

public static final String CACHE_SYNC_TYPE

See Also:

Constant Field Values

CACHE_SYNC_RECORD

public static final String CACHE_SYNC_RECORD

See Also:

Constant Field Values

Constructor Detail

CacheSynchronizer

public CacheSynchronizer(Messaging msg,
                 Morphium morphium)

Parameters:

msg - - primary messaging, will attach to and send messages over

morphium - - the underlying morphium instance

Method Detail

addSyncListener

public void addSyncListener(CacheSyncListener cl)

removeSyncListener

public void removeSyncListener(CacheSyncListener cl)

addSyncListener

public void addSyncListener(Class type,
                   CacheSyncListener cl)

removeSyncListener

public void removeSyncListener(Class type,
                      CacheSyncListener cl)

firePostSendEvent

public void firePostSendEvent(Class type,
                     Msg m)

firePreSendEvent

public void firePreSendEvent(Class type,
                    Msg m)
                      throws CacheSyncVetoException

Throws:

CacheSyncVetoException

firePostClearEvent

public void firePostClearEvent(Class type,
                      Msg m)

sendClearMessage

public void sendClearMessage(Object record,
                    String reason,
                    boolean isNew)

sendClearMessage

public void sendClearMessage(Class type,
                    String reason)

sends message if necessary

Parameters:

type - - type

reason - - reason

detach

public void detach()

isAttached

public boolean isAttached()

sendClearAllMessage

public void sendClearAllMessage(String reason)

postStore

public void postStore(Morphium m,
             Object r,
             boolean isNew)

Specified by:

postStore in interface MorphiumStorageListener<Object>

Overrides:

postStore in class MorphiumStorageAdapter<Object>

postDrop

public void postDrop(Morphium m,
            Class cls)

Specified by:

postDrop in interface MorphiumStorageListener<Object>

Overrides:

postDrop in class MorphiumStorageAdapter<Object>

preDrop

public void preDrop(Morphium m,
           Class cls)

Specified by:

preDrop in interface MorphiumStorageListener<Object>

Overrides:

preDrop in class MorphiumStorageAdapter<Object>

postRemove

public void postRemove(Morphium m,
              Query q)

Specified by:

postRemove in interface MorphiumStorageListener<Object>

Overrides:

postRemove in class MorphiumStorageAdapter<Object>

postUpdate

public void postUpdate(Morphium m,
              Class cls,
              Enum updateType)

Specified by:

postUpdate in interface MorphiumStorageListener<Object>

Overrides:

postUpdate in class MorphiumStorageAdapter<Object>

onMessage

public Msg onMessage(Messaging msg,
            Msg m)

Description copied from interface: MessageListener

process message, send answer if null is returned, no answer is sent

Specified by:

onMessage in interface MessageListener