#16 board : entity - article

board/src/main/java/com/example/board/config/JpaConfig.java

@@ -0,0 +1,18 @@
+package com.example.board.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.domain.AuditorAware;
+import org.springframework.data.jpa.repository.config.EnableJpaAuditing;
+
+import java.util.Optional;
+
+@EnableJpaAuditing
+@Configuration
+public class JpaConfig {
+
+    @Bean
+    public AuditorAware<String> auditorAware() {
+        return () -> Optional.of("bobby"); // TODO: 인증기능 구현 시 수정
+    }
+}

board/src/main/java/com/example/board/domain/Article.java

@@ -1,15 +1,80 @@
 package com.example.board.domain;
 
-import java.time.LocalDateTime;
+import lombok.Getter;
+import lombok.Setter;
+import lombok.ToString;
+import org.springframework.data.annotation.CreatedBy;
+import org.springframework.data.annotation.CreatedDate;
+import org.springframework.data.annotation.LastModifiedBy;
+import org.springframework.data.annotation.LastModifiedDate;
 
+import javax.persistence.*;
+import java.time.LocalDateTime;
+import java.util.Objects;
+
+@Getter
+@ToString
+@Table(indexes = {
+        @Index(columnList = "title"),
+        @Index(columnList = "hashtag"),
+        @Index(columnList = "createdAt"),
+        @Index(columnList = "createdBy")
+})
+@Entity
 public class Article {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long id;
+
+    @Setter
+    @Column(nullable = false)
     private String title; // 제목
+
+    @Setter
+    @Column(nullable = false, length = 10000)
     private String content; // 본문
+
+    @Setter
     private String hashtag; // 해시태그
 
+    @CreatedDate
+    @Column(nullable = false)
     private LocalDateTime createdAt; // 생성일시
+
+    @CreatedBy
+    @Column(nullable = false, length = 100)
     private String createdBy; // 생성자
+
+    @LastModifiedDate
+    @Column(nullable = false)
     private LocalDateTime modifiedAt; // 수정일시
+
+    @LastModifiedBy
+    @Column(nullable = false, length = 100)
     private String modifiedBy; //수정자
+
+    protected Article() {}
+
+    private Article(String title, String content, String hashtag) {
+        this.title = title;
+        this.content = content;
+        this.hashtag = hashtag;
+    }
+
+    public static Article of(String title, String content, String hashtag) {
+        return new Article(title, content, hashtag);
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (!(o instanceof Article article)) return false;
+        return id != null && id.equals(article.id);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id);
+    }
 }