001 package com.croftsoft.apps.ajgp.data;
002
003 import java.beans.XMLDecoder;
004 import java.beans.XMLEncoder;
005 import java.io.ByteArrayInputStream;
006 import java.io.ByteArrayOutputStream;
007 import java.io.Serializable;
008
009 import com.croftsoft.core.lang.Testable;
010
011 /*********************************************************************
012 * Example data object for Data Persistence chapter.
013 *
014 * @version
015 * 2003-03-13
016 * @since
017 * 2003-03-12
018 * @author
019 * <a href="https://www.croftsoft.com/">David Wallace Croft</a>
020 *********************************************************************/
021
022 public final class SerializableGameData
023 implements Serializable, GameData, Testable
024 //////////////////////////////////////////////////////////////////////
025 //////////////////////////////////////////////////////////////////////
026 {
027
028 private static final long serialVersionUID = 1L;
029
030 //
031
032 private int health;
033
034 private int wealth;
035
036 private int wisdom;
037
038 //////////////////////////////////////////////////////////////////////
039 // static methods
040 //////////////////////////////////////////////////////////////////////
041
042 public static void main ( String [ ] args )
043 //////////////////////////////////////////////////////////////////////
044 {
045 System.out.println ( test ( args ) );
046 }
047
048 public static boolean test ( String [ ] args )
049 //////////////////////////////////////////////////////////////////////
050 {
051 try
052 {
053 final int TEST_HEALTH = -1;
054
055 GameData gameData1 = new SerializableGameData ( );
056
057 System.out.println ( "health = " + gameData1.getHealth ( ) );
058
059 System.out.println ( "wealth = " + gameData1.getWealth ( ) );
060
061 System.out.println ( "wisdom = " + gameData1.getWisdom ( ) );
062
063 gameData1.setHealth ( TEST_HEALTH );
064
065 ByteArrayOutputStream byteArrayOutputStream
066 = new ByteArrayOutputStream ( );
067
068 XMLEncoder xmlEncoder = new XMLEncoder ( byteArrayOutputStream );
069
070 xmlEncoder.writeObject ( gameData1 );
071
072 xmlEncoder.close ( );
073
074 byte [ ] xmlBytes = byteArrayOutputStream.toByteArray ( );
075
076 System.out.println ( new String ( xmlBytes ) );
077
078 XMLDecoder xmlDecoder
079 = new XMLDecoder ( new ByteArrayInputStream ( xmlBytes ) );
080
081 GameData gameData2 = ( GameData ) xmlDecoder.readObject ( );
082
083 System.out.println ( "health = " + gameData2.getHealth ( ) );
084
085 System.out.println ( "wealth = " + gameData2.getWealth ( ) );
086
087 System.out.println ( "wisdom = " + gameData2.getWisdom ( ) );
088
089 return gameData2.getHealth ( ) == TEST_HEALTH
090 && gameData2.getWealth ( ) == DEFAULT_WEALTH
091 && gameData2.getWisdom ( ) == DEFAULT_WISDOM;
092 }
093 catch ( Exception ex )
094 {
095 ex.printStackTrace ( );
096
097 return false;
098 }
099 }
100
101 //////////////////////////////////////////////////////////////////////
102 // no-argument constructor method
103 //////////////////////////////////////////////////////////////////////
104
105 public SerializableGameData ( )
106 //////////////////////////////////////////////////////////////////////
107 {
108 setHealth ( DEFAULT_HEALTH );
109
110 setWealth ( DEFAULT_WEALTH );
111
112 setWisdom ( DEFAULT_WISDOM );
113 }
114
115 //////////////////////////////////////////////////////////////////////
116 // accessor methods
117 //////////////////////////////////////////////////////////////////////
118
119 public int getHealth ( ) { return health; }
120
121 public int getWealth ( ) { return wealth; }
122
123 public int getWisdom ( ) { return wisdom; }
124
125 //////////////////////////////////////////////////////////////////////
126 // mutator methods
127 //////////////////////////////////////////////////////////////////////
128
129 public void setHealth ( int health )
130 //////////////////////////////////////////////////////////////////////
131 {
132 if ( health < MINIMUM_HEALTH )
133 {
134 throw new IllegalArgumentException ( "health < minimum" );
135 }
136
137 this.health = health;
138 }
139
140 public void setWealth ( int wealth )
141 //////////////////////////////////////////////////////////////////////
142 {
143 if ( wealth < MINIMUM_WEALTH )
144 {
145 throw new IllegalArgumentException ( "wealth < minimum" );
146 }
147
148 this.wealth = wealth;
149 }
150
151 public void setWisdom ( int wisdom )
152 //////////////////////////////////////////////////////////////////////
153 {
154 if ( wisdom < MINIMUM_WISDOM )
155 {
156 throw new IllegalArgumentException ( "wisdom < minimum" );
157 }
158
159 this.wisdom = wisdom;
160 }
161
162 //////////////////////////////////////////////////////////////////////
163 //////////////////////////////////////////////////////////////////////
164 }