nodeidloc.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: NodeIdLoc.java,v 1.2 2004/01/25 20:53:42 leomekenkamp Exp $

package org.ozoneDB.core.storage.gammaStore;

import java.io.Serializable;

/**
 * @author <a href="mailto:leoATmekenkampD0Tcom">Leo Mekenkamp (mind the anti sp@m)</a>
 * @version $Id: NodeIdLoc.java,v 1.2 2004/01/25 20:53:42 leomekenkamp Exp $
 */
public class NodeIdLoc extends Loc {
    
    protected long[] nodeIds;
    
    public NodeIdLoc(int capacity, float bufferFactor) {
        super(capacity, bufferFactor);
        nodeIds = new long[keys.length];
    }

    public NodeIdLoc(int capacity, int slack) {
        super(capacity, slack);
        nodeIds = new long[keys.length];
    }

    public void putNodeId(int pos, long nodeId) {
        nodeIds[pos] = nodeId;
    }
    
    protected void move(int from, int to) {
        super.move(from, to);
        nodeIds[to] = nodeIds[from];
    }
    
    public long getNodeId(int pos) {
        return nodeIds[pos];
    }

    public String toString() {
        StringBuffer result = new StringBuffer(super.toString());
        result.append(" nodes [");
        for (int i = 0; i < nodeIds.length; i++) {
            result.append(nodeIds[i]);
            if (!isInUse(i)) {
                result.append("D");
            }
            if (i < nodeIds.length - 1) {
                result.append(", ");
            } else {
                result.append("]");
            }
        }
        
        return result.toString();
    }
    
}