objectlocation.java

Java的面向对象数据库系统的源代码

// You can redistribute this software and/or modify it under the terms of
// the Ozone Core License version 1 published by ozone-db.org.
//
// Copyright (C) 2003-@year@, Leo Mekenkamp. All rights reserved.
//
// $Id$

package org.ozoneDB.core.storage.gammaStore;

import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;

/**
 * Holds information on where exactly object data has been (or can be)
 * persisted. Objects are written to clusters, where the position has the
 * offset of where within a cluster the serialized object data starts.
 *
 * @author <a href="mailto:leoATmekenkampD0Tcom">Leo Mekenkamp (mind the anti sp@m)</a>
 * @version $Id$
 */
final class ObjectLocation implements Serializable {

    private long oldClusterId;
    private long oldPosition;

    private long newClusterId;
    private long newPosition;
    
    ObjectLocation() {
    }
    
    public String toString() {
        return super.toString() + 
                "; oldClusterId: " + oldClusterId +
                ", oldPosition: " + oldPosition +
                ", newClusterId: " + newClusterId +
                ", newPosition: " + newPosition;
    }

    final long getOldClusterId() {
        return oldClusterId;
    }

    final void setOldClusterId(long oldClusterId) {
        this.oldClusterId = oldClusterId;
    }

    final long getOldPosition() {
        return oldPosition;
    }

    final void setOldPosition(long oldPosition) {
        this.oldPosition = oldPosition;
    }

    final long getNewClusterId() {
        return newClusterId;
    }

    final void setNewClusterId(long newClusterId) {
        this.newClusterId = newClusterId;
    }

    final long getNewPosition() {
        return newPosition;
    }

    final void setNewPosition(long newPosition) {
        this.newPosition = newPosition;
    }

}