[refactor] Job 도메인 엔티티 @Setter 제거

back/src/main/java/com/back/domain/job/job/entity/Job.java

@@ -4,13 +4,13 @@
 import jakarta.persistence.*;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
-import lombok.Setter;
 
+import java.util.ArrayList;
 import java.util.List;
 
 @Entity
 @Table(name = "job")
-@Getter @Setter
+@Getter
 @NoArgsConstructor
 public class Job extends BaseEntity {
     @Column(name = "name", nullable = false, unique = true)
@@ -20,15 +20,19 @@ public class Job extends BaseEntity {
     private String description;
 
     @OneToMany(mappedBy = "job", cascade = CascadeType.ALL)
-    private List<JobAlias> aliases;
+    private List<JobAlias> aliases = new ArrayList<>();
 
     public Job(String name, String description) {
         this.name = name;
         this.description = description;
+        this.aliases = new ArrayList<>();
     }
 
     public void addAlias(JobAlias alias) {
+        if (aliases == null) {
+            aliases = new ArrayList<>();
+        }
         aliases.add(alias);
-        alias.setJob(this);
+        alias.linkToJob(this);
     }
 }

back/src/main/java/com/back/domain/job/job/entity/JobAlias.java

@@ -4,11 +4,10 @@
 import jakarta.persistence.*;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
-import lombok.Setter;
 
 @Entity
 @Table(name = "job_alias")
-@Getter @Setter
+@Getter
 @NoArgsConstructor
 public class JobAlias extends BaseEntity {
     @Column(name = "name", nullable = false, unique = true)
@@ -22,4 +21,12 @@ public JobAlias(String name) {
         this.name = name;
         this.job = null; // 기본적으로 연결된 Job이 없음 (pending 상태)
     }
+
+    public void linkToJob(Job job) {
+        this.job = job;
+    }
+
+    public boolean isPending() {
+        return this.job == null;
+    }
 }

back/src/main/java/com/back/domain/job/job/service/JobService.java

@@ -28,7 +28,7 @@ public Job create(String name, String description) {
     @Transactional
     public JobAlias createAlias(Job job, String aliasName) {
         JobAlias alias = new JobAlias(aliasName);
-        alias.setJob(job);
+        job.addAlias(alias);
         return jobAliasRepository.save(alias);
     }
 }