/*
* Copyright (c) 2009-2014 Dropbox, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package com.dropbox.client2;
import java.io.Serializable;
/***
* SerializableObject implementation that keeps track of compatible version changes.
*/
public abstract class VersionedSerializable implements Serializable {
private final int instanceVersion;
/**
* @return Version number associated with this instance This data is serialized with the
* instance
*/
public int getInstanceVersion() {
return instanceVersion;
}
/**
* @return The newest version of class' data format.
*/
public abstract int getLatestVersion();
/**
* @return Whether some fields of this instance were not present in deserialized data If true,
* app should retetch data from server
*/
public boolean isStale() {
return instanceVersion < getLatestVersion();
}
public VersionedSerializable() {
instanceVersion = getLatestVersion();
}
}