package org.neo4j.kernel.impl.transaction.xaframework;
import java.io.IOException;
import java.nio.channels.ReadableByteChannel;
import java.util.Map;
public abstract class LogBackedXaDataSource extends XaDataSource
{
private XaLogicalLog logicalLog;
public LogBackedXaDataSource( Map<?, ?> params )
throws InstantiationException
{
super( params );
}
/**
* Sets the {@link XaLogicalLog} at creation time (in constructor). It is
* done with this method because it can be so problematic in so many ways
* to have a subclass pass in this to the constructor.
* @param logicalLog the {@link XaLogicalLog} to set.
*/
protected void setLogicalLogAtCreationTime( XaLogicalLog logicalLog )
{
if ( this.logicalLog != null )
{
throw new RuntimeException( "Logical log already set for " + this );
}
this.logicalLog = logicalLog;
}
@Override
public void applyLog( ReadableByteChannel byteChannel ) throws IOException
{
logicalLog.applyLog( byteChannel );
}
@Override
public boolean deleteLogicalLog( long version )
{
return logicalLog.deleteLogicalLog( version );
}
@Override
public ReadableByteChannel getLogicalLog( long version ) throws IOException
{
return logicalLog.getLogicalLog( version );
}
@Override
public long getLogicalLogLength( long version )
{
return logicalLog.getLogicalLogLength( version );
}
@Override
public boolean hasLogicalLog( long version )
{
return logicalLog.hasLogicalLog( version );
}
@Override
public boolean isLogicalLogKept()
{
return logicalLog.isLogsKept();
}
@Override
public void keepLogicalLogs( boolean keepLogs )
{
logicalLog.setKeepLogs( keepLogs );
}
@Override
public void rotateLogicalLog() throws IOException
{
logicalLog.rotate();
}
@Override
public void setAutoRotate( boolean rotate )
{
logicalLog.setAutoRotateLogs( rotate );
}
@Override
public void setLogicalLogTargetSize( long size )
{
logicalLog.setLogicalLogTargetSize( size );
}
@Override
public void makeBackupSlave()
{
logicalLog.makeBackupSlave();
}
@Override
public String getFileName( long version )
{
return logicalLog.getFileName( version );
}
}