Assign 4 tried

04/blogapp/src/main/java/com/scaler/blogapp/BaseModel.java

@@ -0,0 +1,25 @@
+package com.scaler.blogapp;
+
+import org.springframework.data.annotation.CreatedDate;
+import org.springframework.data.annotation.LastModifiedDate;
+
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.MappedSuperclass;
+import java.util.Date;
+
+@MappedSuperclass
+public class BaseModel {
+
+        @Id
+        @GeneratedValue(strategy = GenerationType.SEQUENCE)
+        private Long id;
+
+        @CreatedDate
+        private Date createdAt;
+
+        @LastModifiedDate
+        private Date lastModifiedAt;
+
+}

04/blogapp/src/main/java/com/scaler/blogapp/articles/ArticleEntity.java

@@ -1,9 +1,38 @@
 package com.scaler.blogapp.articles;
 
-public class ArticleEntity {
+import com.scaler.blogapp.BaseModel;
+import com.scaler.blogapp.comments.CommentEntity;
+import com.scaler.blogapp.users.UserEntity;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import javax.persistence.*;
+import java.util.List;
+
+@Entity
+@Getter
+@NoArgsConstructor
+@AllArgsConstructor
+public class ArticleEntity extends BaseModel {
 
     /*
     ASSIGNMENT 04: Complete this entity class based on this
     https://github.com/scaleracademy/project-module-requirement-docs/blob/main/blogging-app/SCHEMA.md
      */
+    @Column(nullable=false)
+    String Name;
+
+    @Column(nullable=false)
+    String Content;
+
+    @ManyToMany
+    List<UserEntity> likedUsers;
+
+    @OneToMany
+    List<CommentEntity> comments;
+
+    @ManyToOne
+    @Column(nullable = false)
+    UserEntity author;
 }

04/blogapp/src/main/java/com/scaler/blogapp/comments/CommentEntity.java

@@ -1,9 +1,40 @@
 package com.scaler.blogapp.comments;
 
-public class CommentEntity {
+import com.scaler.blogapp.BaseModel;
+import com.scaler.blogapp.articles.ArticleEntity;
+import com.scaler.blogapp.users.UserEntity;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.JoinColumn;
+import javax.persistence.ManyToOne;
+
+@Entity
+@Getter
+@Setter
+@NoArgsConstructor
+@AllArgsConstructor
+public class CommentEntity extends BaseModel {
 
     /*
     ASSIGNMENT 04: Complete this entity class based on this
     https://github.com/scaleracademy/project-module-requirement-docs/blob/main/blogging-app/SCHEMA.md
      */
+    @Column(nullable = false)
+    String text;
+
+    @ManyToOne
+    @Column(nullable = false)
+    ArticleEntity article;
+
+
+    @ManyToOne
+    @Column(nullable = false)
+    UserEntity author;
+
+
 }

04/blogapp/src/main/java/com/scaler/blogapp/users/UserEntity.java

@@ -1,9 +1,43 @@
 package com.scaler.blogapp.users;
 
-public class UserEntity {
+import com.scaler.blogapp.BaseModel;
+import com.scaler.blogapp.articles.ArticleEntity;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.ManyToMany;
+import javax.persistence.OneToMany;
+import java.util.List;
+
+@Entity
+@Getter
+@Setter
+@NoArgsConstructor
+@AllArgsConstructor
+public class UserEntity extends BaseModel {
 
     /*
     ASSIGNMENT 04: Complete this entity class based on this
     https://github.com/scaleracademy/project-module-requirement-docs/blob/main/blogging-app/SCHEMA.md
      */
+    @Column(nullable = false)
+    String name;
+
+    @OneToMany(mappedBy = "author")
+    List<ArticleEntity> userArticles;
+
+
+    @ManyToMany
+    List<UserEntity> followers;
+
+    @ManyToMany
+    List<UserEntity> followee;
+
+    @ManyToMany(mappedBy = "likedUsers")
+    List<ArticleEntity> likedArticles;
+
 }