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package org.litesoft.orsup.base;
import java.io.*;
import org.litesoft.changemanagement.*;
import org.litesoft.core.*;
import org.litesoft.orsup.transact.*;
import org.litesoft.util.*;
public class CacheMaintainer implements TransactionCommitListener
{
public static void create( Finder pFinder, CacheMaintenanceListener pListener )
{
Utils.assertNotNull( "Finder", pFinder );
Utils.assertNotNull( "Listener", pListener );
CacheMaintainer zMaintainer = new CacheMaintainer( pListener, pFinder.getNextSequenceNumber( "CacheMaintainer" ) );
pFinder.getTransactionCommitListenerManager().addListener( zMaintainer );
zMaintainer.registerForChangesFromClusterPeers();
}
private void registerForChangesFromClusterPeers()
{
getMasterCLM().addListener( new MyChangeListener(), mListener.getClass() );
}
private void sendChangesToClusterPeers( Serializable pCacheUpdate )
{
String zName = mListener.getClass().getName();
ServerStateChange zChange = new ServerStateChange( ServerStateChange.Action.UPDATED, //
zName, // ChangedObjectTypeName
mOurID, // ChangedObjectUniqueKey
null, // ChangedObjectDisplayValue
pCacheUpdate );
getMasterCLM().notifyAllRemoteListeners( new ServerStateChangeSet( mOurID, // SourceUniqueID
zName, // SourceClassname
zChange ) );
}
private ChangeListenerManager getMasterCLM()
{
DataStore zMasterDataStore = ServerContext.getMasterServerStore().get( DataStore.class );
Utils.assertNotNull( "MasterDataStore", zMasterDataStore );
return zMasterDataStore.getChangeListenerManager();
}
private CacheMaintainer( CacheMaintenanceListener pListener, Long pOurID )
{
mListener = pListener;
mOurID = pOurID;
}
private CacheMaintenanceListener mListener;
private Long mOurID;
public TransactionSuccessfulCommitCallBack aboutToCommit( PersistentObject[] pCommitParticipants )
{
Serializable zResult = mListener.aboutToCommit( pCommitParticipants );
return (zResult != null) ? new MyCallBack( zResult ) : null;
}
private class MyCallBack implements TransactionSuccessfulCommitCallBack
{
private Serializable mResult;
public MyCallBack( Serializable pResult )
{
mResult = pResult;
}
public void commitSucceeded()
{
sendChangesToClusterPeers( mResult );
mListener.updateCache( mResult );
}
}
private class MyChangeListener implements ServerStateChangedListener
{
public void serverStateChanged( ServerStateChangeSet pServerStateChangeSet )
{
for ( ServerStateChange zChange : pServerStateChangeSet.getChanges() )
{
mListener.updateCache( (Serializable) zChange.getExtraInfo() );
}
}
}
}
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Revision |
Author |
Commited |
Message |
2
|
GeorgeS
|
Sun 07 Feb, 2010 12:50:58 +0000 |
|