// The MIT License (MIT)

//

// Copyright (c) 2018 Robert C. Seacord

//

// 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 ser04j;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.ObjectInputStream;

import java.io.ObjectOutputStream;

import java.io.Serializable;

import java.nio.file.AccessDeniedException;

public final class Hometown implements Serializable {

private static final long serialVersionUID = 6515419803685137985L;

// Private internal state

private String town;

private static final String MOSCOW = "Moscow";

private static void validateInput(String newtown) throws AccessDeniedException {

if (MOSCOW.equals(newtown)) {

throw new AccessDeniedException("Nyet, comrade");

}

}

public Hometown(String town) throws AccessDeniedException {

validateInput(town);

// Initialize town to default value

this.town = town;

}

// Allows callers to retrieve internal state without security check

String getTown() {

return this.town;

}

// Privileged callers can modify (private) state

public void setTown(String newTown) throws AccessDeniedException {

if (!this.town.equals(newTown)) {

validateInput(newTown);

this.town = newTown;

}

}

@SuppressWarnings("static-method")

private void writeObject(ObjectOutputStream out) throws IOException {

System.out.println("writeObject called");

out.defaultWriteObject();

}

private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException {

String readTown;

ObjectInputStream.GetField fields = in.readFields();

readTown = (String) fields.get("town", null);

this.town = readTown;

}

public static void main(String[] args) throws IOException, ClassNotFoundException {

// Create Hometown object

Hometown ht = new Hometown("Warsaw");

System.out.println("Home town is " + ht.getTown());

try (ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream("tempdata.ser"))

) {

oos.writeObject(ht);

}

// Construct a new object through deserialization

try (

// Edit tempdata.ser in %userprofile%\git\JavaSCR

ObjectInputStream ois = new ObjectInputStream(new FileInputStream("tempdata.ser"))

) {

ht = (Hometown) ois.readObject();

}

System.out.println("My town is " + ht.getTown());

// Clean up the file

if (!new File("tempdata.ser").delete()) {

System.err.println("Failed to delete tempdata.ser");

}

}

}

//private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException {

// String readTown;

// ObjectInputStream.GetField fields = in.readFields();

// readTown = (String) fields.get("town", null);

// // Validate town field

// validateInput(readTown);

// this.town = readTown;

//}