gaspersic/java-design-patterns
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

enhancement: Refactor and add explanation for value object (#1942)

Browse Source 
Co-authored-by: Subhrodip Mohanta <hello@subho.xyz>
This commit is contained in:
Ilkka Seppälä
2022-01-08 14:31:09 +02:00
committed by GitHub
parent 2d2dec98e8
commit 4f8007d674
3 changed files with 74 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
value-object/src/main/java/com/iluwatar/value/object/App.java
View File

@@ -43,7 +43,7 @@ import lombok.extern.slf4j.Slf4j;
public class App {
/**
* This practice creates three HeroStats(Value object) and checks equality between those.
* This example creates three HeroStats (value objects) and checks equality between those.
*/
public static void main(String[] args) {
var statA = HeroStat.valueOf(10, 5, 0);
@@ -51,6 +51,8 @@ public class App {
var statC = HeroStat.valueOf(5, 1, 8);
LOGGER.info(statA.toString());
LOGGER.info(statB.toString());
LOGGER.info(statC.toString());
LOGGER.info("Is statA and statB equal : {}", statA.equals(statB));
LOGGER.info("Is statA and statC equal : {}", statA.equals(statC));

28
value-object/src/main/java/com/iluwatar/value/object/HeroStat.java
View File

@@ -23,10 +23,7 @@
package com.iluwatar.value.object;
import lombok.EqualsAndHashCode;
import lombok.Getter;
import lombok.RequiredArgsConstructor;
import lombok.ToString;
import lombok.Value;
/**
* HeroStat is a value object.
@@ -35,23 +32,10 @@ import lombok.ToString;
* http://docs.oracle.com/javase/8/docs/api/java/lang/doc-files/ValueBased.html
* </a>
*/
@Getter
@ToString
@EqualsAndHashCode
@RequiredArgsConstructor
public class HeroStat {
// Stats for a hero
private final int strength;
private final int intelligence;
private final int luck;
// Static factory method to create new instances.
public static HeroStat valueOf(int strength, int intelligence, int luck) {
return new HeroStat(strength, intelligence, luck);
}
// The clone() method should not be public. Just don't override it.
@Value(staticConstructor = "valueOf")
class HeroStat {
int strength;
int intelligence;
int luck;
}