/*
* Copyright (c) 2006-2009 by Dirk Riehle, http://dirkriehle.com
*
* This file is part of the Wahlzeit photo rating application.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public
* License along with this program. If not, see
* <http://www.gnu.org/licenses/>.
*/
package org.wahlzeit.services;
import java.io.Serializable;
/**
* A simple abstract implementation of Persistent with write count and dirty bit.
* Also defines (but does not use) the field "ID" for subclass use.
*/
public abstract class DataObject implements Persistent, Serializable {
/**
* Not used in the class but needed by broad array of subclasses
*/
public static final String ID = "id";
/**
*
*/
protected transient int writeCount = 0;
/**
*
*/
public final boolean isDirty() {
return writeCount != 0;
}
/**
*
*/
public final void resetWriteCount() {
writeCount = 0;
}
/**
*
*/
public final void incWriteCount() {
writeCount++;
}
/**
*
*/
public final void touch() {
incWriteCount();
}
}