Merge pull request #281 from ankurkaushal/master
Reformat according to google style guide
This commit is contained in:
Ilkka Seppälä
@ -6,53 +6,55 @@ import com.iluwatar.property.Character.Type;
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*
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* The Property pattern is also known as Prototype inheritance.
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* <p>
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* In prototype inheritance instead of classes, as opposite to Java class inheritance,
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* objects are used to create another objects and object hierarchies. Hierarchies are created using prototype chain
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* through delegation: every object has link to parent object. Any base (parent) object can be amended at runtime
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* (by adding or removal of some property), and all child objects will be affected as result.
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* In prototype inheritance instead of classes, as opposite to Java class inheritance, objects are
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* used to create another objects and object hierarchies. Hierarchies are created using prototype
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* chain through delegation: every object has link to parent object. Any base (parent) object can be
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* amended at runtime (by adding or removal of some property), and all child objects will be
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* affected as result.
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* <p>
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* In this example we demonstrate {@link Character} instantiation using the Property pattern.
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*
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*/
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public class App {
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/**
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* Program entry point
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* @param args command line args
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*/
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public static void main(String[] args) {
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/* set up */
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Prototype charProto = new Character();
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charProto.set(Stats.STRENGTH, 10);
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charProto.set(Stats.AGILITY, 10);
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charProto.set(Stats.ARMOR, 10);
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charProto.set(Stats.ATTACK_POWER, 10);
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/**
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* Program entry point
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*
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* @param args command line args
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*/
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public static void main(String[] args) {
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/* set up */
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Prototype charProto = new Character();
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charProto.set(Stats.STRENGTH, 10);
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charProto.set(Stats.AGILITY, 10);
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charProto.set(Stats.ARMOR, 10);
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charProto.set(Stats.ATTACK_POWER, 10);
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Character mageProto = new Character(Type.MAGE, charProto);
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mageProto.set(Stats.INTELLECT, 15);
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mageProto.set(Stats.SPIRIT, 10);
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Character mageProto = new Character(Type.MAGE, charProto);
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mageProto.set(Stats.INTELLECT, 15);
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mageProto.set(Stats.SPIRIT, 10);
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Character warProto = new Character(Type.WARRIOR, charProto);
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warProto.set(Stats.RAGE, 15);
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warProto.set(Stats.ARMOR, 15); // boost default armor for warrior
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Character warProto = new Character(Type.WARRIOR, charProto);
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warProto.set(Stats.RAGE, 15);
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warProto.set(Stats.ARMOR, 15); // boost default armor for warrior
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Character rogueProto = new Character(Type.ROGUE, charProto);
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rogueProto.set(Stats.ENERGY, 15);
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rogueProto.set(Stats.AGILITY, 15); // boost default agility for rogue
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Character rogueProto = new Character(Type.ROGUE, charProto);
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rogueProto.set(Stats.ENERGY, 15);
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rogueProto.set(Stats.AGILITY, 15); // boost default agility for rogue
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/* usage */
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Character mag = new Character("Player_1", mageProto);
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mag.set(Stats.ARMOR, 8);
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System.out.println(mag);
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/* usage */
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Character mag = new Character("Player_1", mageProto);
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mag.set(Stats.ARMOR, 8);
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System.out.println(mag);
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Character warrior = new Character("Player_2", warProto);
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System.out.println(warrior);
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Character warrior = new Character("Player_2", warProto);
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System.out.println(warrior);
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Character rogue = new Character("Player_3", rogueProto);
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System.out.println(rogue);
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Character rogue = new Character("Player_3", rogueProto);
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System.out.println(rogue);
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Character rogueDouble = new Character("Player_4", rogue);
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rogueDouble.set(Stats.ATTACK_POWER, 12);
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System.out.println(rogueDouble);
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}
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Character rogueDouble = new Character("Player_4", rogue);
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rogueDouble.set(Stats.ATTACK_POWER, 12);
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System.out.println(rogueDouble);
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}
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}
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@ -8,110 +8,100 @@ import java.util.Map;
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*/
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public class Character implements Prototype {
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public enum Type {
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WARRIOR, MAGE, ROGUE
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}
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public enum Type {
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WARRIOR, MAGE, ROGUE
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}
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private final Prototype prototype;
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private final Map<Stats, Integer> properties = new HashMap<>();
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private final Prototype prototype;
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private final Map<Stats, Integer> properties = new HashMap<>();
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private String name;
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private Type type;
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private String name;
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private Type type;
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public Character() {
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this.prototype = new Prototype() { // Null-value object
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@Override
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public Integer get(Stats stat) {
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return null;
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}
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@Override
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public boolean has(Stats stat) {
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return false;
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}
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@Override
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public void set(Stats stat, Integer val) {
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}
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@Override
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public void remove(Stats stat) {
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}}
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;
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}
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public Character() {
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this.prototype = new Prototype() { // Null-value object
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@Override
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public Integer get(Stats stat) {
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return null;
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}
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public Character(Type type, Prototype prototype) {
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this.type = type;
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this.prototype = prototype;
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}
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@Override
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public boolean has(Stats stat) {
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return false;
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}
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public Character(String name, Character prototype) {
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this.name = name;
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this.type = prototype.type;
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this.prototype = prototype;
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}
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@Override
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public void set(Stats stat, Integer val) {}
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public String name() {
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return name;
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}
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@Override
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public void remove(Stats stat) {}
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};
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}
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public Type type() {
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return type;
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}
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public Character(Type type, Prototype prototype) {
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this.type = type;
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this.prototype = prototype;
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}
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@Override
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public Integer get(Stats stat) {
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boolean containsValue = properties.containsKey(stat);
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if (containsValue) {
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return properties.get(stat);
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} else {
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return prototype.get(stat);
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}
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}
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public Character(String name, Character prototype) {
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this.name = name;
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this.type = prototype.type;
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this.prototype = prototype;
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}
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@Override
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public boolean has(Stats stat) {
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return get(stat) != null;
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}
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public String name() {
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return name;
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}
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@Override
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public void set(Stats stat, Integer val) {
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properties.put(stat, val);
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}
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public Type type() {
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return type;
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}
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@Override
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public void remove(Stats stat) {
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properties.put(stat, null);
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}
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@Override
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public Integer get(Stats stat) {
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boolean containsValue = properties.containsKey(stat);
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if (containsValue) {
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return properties.get(stat);
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} else {
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return prototype.get(stat);
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}
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}
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@Override
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public String toString() {
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StringBuilder builder = new StringBuilder();
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if (name != null) {
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builder
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.append("Player: ")
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.append(name)
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.append("\n");
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}
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@Override
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public boolean has(Stats stat) {
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return get(stat) != null;
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}
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if (type != null) {
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builder
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.append("Character type: ")
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.append(type.name())
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.append("\n");
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}
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@Override
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public void set(Stats stat, Integer val) {
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properties.put(stat, val);
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}
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builder.append("Stats:\n");
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for (Stats stat : Stats.values()) {
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Integer value = this.get(stat);
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if (value == null) {
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continue;
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}
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builder
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.append(" - ")
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.append(stat.name())
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.append(":")
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.append(value)
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.append("\n");
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}
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return builder.toString();
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}
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@Override
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public void remove(Stats stat) {
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properties.put(stat, null);
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}
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@Override
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public String toString() {
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StringBuilder builder = new StringBuilder();
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if (name != null) {
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builder.append("Player: ").append(name).append("\n");
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}
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if (type != null) {
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builder.append("Character type: ").append(type.name()).append("\n");
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}
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builder.append("Stats:\n");
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for (Stats stat : Stats.values()) {
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Integer value = this.get(stat);
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if (value == null) {
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continue;
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}
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builder.append(" - ").append(stat.name()).append(":").append(value).append("\n");
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}
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return builder.toString();
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}
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}
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@ -5,8 +5,11 @@ package com.iluwatar.property;
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*/
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public interface Prototype {
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public Integer get(Stats stat);
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public boolean has(Stats stat);
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public void set(Stats stat, Integer val);
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public void remove(Stats stat);
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public Integer get(Stats stat);
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public boolean has(Stats stat);
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public void set(Stats stat, Integer val);
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public void remove(Stats stat);
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}
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@ -5,5 +5,5 @@ package com.iluwatar.property;
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*/
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public enum Stats {
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AGILITY, STRENGTH, ATTACK_POWER, ARMOR, INTELLECT, SPIRIT, ENERGY, RAGE
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AGILITY, STRENGTH, ATTACK_POWER, ARMOR, INTELLECT, SPIRIT, ENERGY, RAGE
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}
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@ -11,9 +11,9 @@ import com.iluwatar.property.App;
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*/
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public class AppTest {
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@Test
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public void test() {
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String[] args = {};
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App.main(args);
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}
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@Test
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public void test() {
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String[] args = {};
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App.main(args);
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}
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}
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