melbourneprevaylerdriver.java

poleperst-asynch也传上去 希望对大家有所帮助哦 谢谢

/* 
This file is part of the PolePosition database benchmark
http://www.polepos.org

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public
License along with this program; if not, write to the Free
Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
MA  02111-1307, USA. */

package org.polepos.teams.prevayler.melbourne;

import java.util.*;

import org.polepos.circuits.melbourne.*;
import org.polepos.data.*;
import org.polepos.teams.prevayler.*;


public class MelbournePrevaylerDriver extends PrevaylerDriver implements MelbourneDriver, Checksum {

    private final MelbourneSystem _melbourne = (MelbourneSystem)_prevayler.prevalentSystem();

    public void write() {
        int objectsToWrite= setup().getObjectCount(); 
        int commitInterval= setup().getCommitInterval();
        
        while (objectsToWrite > 0) {
            int objectsToWriteNow = objectsToWrite < commitInterval
                ? objectsToWrite
                : commitInterval;
            _prevayler.execute(new ObjectCreationTransaction(objectsToWriteNow));
            objectsToWrite -= commitInterval;
        }
    }
    
    public void read() {
        Iterator pilots = _melbourne.pilots().iterator();
        while (pilots.hasNext()) {
            Pilot p = (Pilot)pilots.next();
        }
    }
    
    public void read_hot() {
        read();
    }
    
    public void delete() {
        int objectsToDelete = setup().getObjectCount(); 
        int commitInterval = setup().getCommitInterval();
        
        while (objectsToDelete > 0) {
            int objectsToDeleteNow = objectsToDelete < commitInterval
                ? objectsToDelete
                : commitInterval;
            _prevayler.execute(new DeletionTransaction(objectsToDeleteNow));
            objectsToDelete -= commitInterval;
        }
    }

    protected Object prevalentSystem() {
        return new MelbourneSystem(this);
    }

    public void add(int i) {
        addToCheckSum(i);
    }


    
}