/* 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.internal.freespace;
import com.db4o.foundation.*;
import com.db4o.internal.*;
import com.db4o.internal.slots.*;
/**
* @exclude
*/
public class NullFreespaceManager implements FreespaceManager {
public static final FreespaceManager INSTANCE = new NullFreespaceManager();
private NullFreespaceManager(){
}
public Slot allocateSlot(int length) {
return null;
}
public Slot allocateSafeSlot(int length) {
return null;
}
public void beginCommit() {
}
public void commit() {
}
public void endCommit() {
}
public void free(Slot slot) {
}
public void freeSelf() {
}
public void freeSafeSlot(Slot slot) {
}
public void listener(FreespaceListener listener) {
}
public void migrateTo(FreespaceManager fm) {
}
public int slotCount() {
return 0;
}
public void slotFreed(Slot slot) {
}
public void start(int id) {
}
public byte systemType() {
return 0;
}
public int totalFreespace() {
return 0;
}
public void traverse(Visitor4<Slot> visitor) {
}
public void write(LocalObjectContainer container) {
}
public boolean isStarted() {
return false;
}
public Slot allocateTransactionLogSlot(int length) {
return null;
}
public void read(LocalObjectContainer container, Slot slot) {
}
}