/* Copyright (C) 2004 - 2008  db4objects Inc.  http://www.db4o.com

This file is part of the db4o open source object database.

db4o is free software; you can redistribute it and/or modify it under
the terms of version 2 of the GNU General Public License as published
by the Free Software Foundation and as clarified by db4objects' GPL 
interpretation policy, available at
http://www.db4o.com/about/company/legalpolicies/gplinterpretation/
Alternatively you can write to db4objects, Inc., 1900 S Norfolk Street,
Suite 350, San Mateo, CA 94403, USA.

db4o 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 com.db4o.io;

import com.db4o.ext.*;

/**
 * @exclude
 */  
public class DebugIoAdapter extends VanillaIoAdapter{
    
    static int counter;
    
    private static final int[] RANGE_OF_INTEREST = new int[] {0, 20};
    

    public DebugIoAdapter(IoAdapter delegateAdapter){
        super(delegateAdapter);
    }
    
    protected DebugIoAdapter(IoAdapter delegateAdapter, String path, boolean lockFile, long initialLength, boolean readOnly) throws Db4oIOException {
        super(delegateAdapter.open(path, lockFile, initialLength, readOnly));
    }

    public IoAdapter open(String path, boolean lockFile, long initialLength, boolean readOnly) throws Db4oIOException {
        return new DebugIoAdapter(new RandomAccessFileAdapter(),  path, lockFile, initialLength, readOnly);
    }
    
    public void seek(long pos) throws Db4oIOException {
        if(pos >= RANGE_OF_INTEREST[0] && pos <= RANGE_OF_INTEREST[1]){
            counter ++;
            System.out.println("seek: " + pos + "  counter: " + counter);
        }
        super.seek(pos);
    }

}
