/* Copyright (C) 2004 - 2007 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.db4ounit.util;
import java.io.*;
import com.db4o.ext.*;
import com.db4o.internal.*;
import com.db4o.internal.marshall.*;
public class VersionServices {
public static final byte HEADER_30_40 = 123;
public static final byte HEADER_46_57 = 4;
public static final byte HEADER_60 = 100;
public static byte fileHeaderVersion(String testFile) throws IOException{
RandomAccessFile raf = new RandomAccessFile(testFile, "r");
byte[] bytes = new byte[1];
raf.read(bytes); // readByte() doesn't convert to .NET.
byte db4oHeaderVersion = bytes[0];
raf.close();
return db4oHeaderVersion;
}
public static int slotHandlerVersion(ExtObjectContainer objectContainer, Object obj){
int id = (int) objectContainer.getID(obj);
ObjectInfo objectInfo = objectContainer.getObjectInfo(obj);
ObjectContainerBase container = (ObjectContainerBase) objectContainer;
Transaction trans = container.transaction();
Buffer buffer = container.readReaderByID(trans, id);
UnmarshallingContext context = new UnmarshallingContext(trans, (ObjectReference)objectInfo, Const4.TRANSIENT, false);
context.buffer(buffer);
context.persistentObject(obj);
context.activationDepth(0);
context.read();
return context.handlerVersion();
}
}
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