/* This file is part of the db4o object database http://www.db4o.com
Copyright (C) 2004 - 2011 Versant Corporation http://www.versant.com
db4o is free software; you can redistribute it and/or modify it under
the terms of version 3 of the GNU General Public License as published
by the Free Software Foundation.
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, see http://www.gnu.org/licenses/. */
package com.db4o.defragment;
import java.io.*;
import com.db4o.foundation.*;
import com.db4o.internal.*;
import com.db4o.internal.btree.*;
import com.db4o.internal.mapping.*;
import com.db4o.internal.slots.*;
/**
* Encapsulates services involving source and target database files during defragmenting.
*
* @exclude
*/
public interface DefragmentServices extends IDMapping {
ByteArrayBuffer sourceBufferByAddress(int address,int length) throws IOException;
ByteArrayBuffer targetBufferByAddress(int address,int length) throws IOException;
ByteArrayBuffer sourceBufferByID(int sourceID) ;
Slot allocateTargetSlot(int targetLength);
void targetWriteBytes(ByteArrayBuffer targetPointerReader, int targetAddress);
Transaction systemTrans();
void targetWriteBytes(DefragmentContextImpl context, int targetAddress);
void traverseAllIndexSlots(BTree tree, Visitor4 visitor4);
void registerBTreeIDs(BTree tree, IDMappingCollector collector);
ClassMetadata classMetadataForId(int id);
int mappedID(int id);
void registerUnindexed(int id);
IdSource unindexedIDs();
int sourceAddressByID(int sourceID);
int targetAddressByID(int sourceID);
int targetNewId();
public IdMapping mapping();
public void commitIds();
}