package com.planet_ink.coffee_mud.core.intermud.persist;
import com.planet_ink.coffee_mud.core.interfaces.*;
import com.planet_ink.coffee_mud.core.*;
import com.planet_ink.coffee_mud.Abilities.interfaces.*;
import com.planet_ink.coffee_mud.Areas.interfaces.*;
import com.planet_ink.coffee_mud.Behaviors.interfaces.*;
import com.planet_ink.coffee_mud.CharClasses.interfaces.*;
import com.planet_ink.coffee_mud.Commands.interfaces.*;
import com.planet_ink.coffee_mud.Common.interfaces.*;
import com.planet_ink.coffee_mud.Exits.interfaces.*;
import com.planet_ink.coffee_mud.Items.interfaces.*;
import com.planet_ink.coffee_mud.Locales.interfaces.*;
import com.planet_ink.coffee_mud.MOBS.interfaces.*;
import com.planet_ink.coffee_mud.Races.interfaces.*;
/**
* com.planet_ink.coffee_mud.core.intermud.persist.Persistent
* Copyright (c) 1996 George Reese
* This source code may not be modified, copied,
* redistributed, or used in any fashion without the
* express written consent of George Reese.
*
* A Persistent object is any object that can be saved
* to some data store.
*/
/**
* Specified methods which must be implemented by
* objects wishing to be saved.
* @author George Reese (borg@imaginary.com)
* @version 1.0
*/
public interface Persistent {
/**
* The Persistent has not yet been modified since last
* save or restore.
*/
static public final int UNMODIFIED = 0;
/**
* The Peersistence has been modified since last save
* or restore.
*/
static public final int MODIFIED = 1;
/**
* The Persistent is a brand new object.
*/
static public final int NEW = 2;
/**
* The Persistent needs to be deleted from the data store.
*/
static public final int DELETED = 3;
/**
* Prescribes a method for restoration from a data
* store. An implementation will usually call the
* object's PersistentPeer method to perform the
* actual save.
* @exception PersistenceException thrown when an error occurs in restoring
* @see com.planet_ink.coffee_mud.core.intermud.persist.PersistentPeer
*/
public abstract void restore() throws PersistenceException;
/**
* Prescribes a method for saving this object's data
* to a data store. An implementation will usually
* check to see if the object has been modified and
* trigger the actual saving mechanism in its
* PersistentPeer implementation.
* @exception PersistentPeer thrown when an error occurs in saving
* @see com.planet_ink.coffee_mud.core.intermud.persist.PersistentPeer
*/
public abstract void save() throws PersistenceException;
}
