Add domain for users, posts, comments

build.gradle

@@ -1,7 +1,7 @@
 plugins {
-	id 'org.springframework.boot' version '2.3.0.RELEASE'
-	id 'io.spring.dependency-management' version '1.0.9.RELEASE'
-	id 'java'
+    id 'org.springframework.boot' version '2.3.0.RELEASE'
+    id 'io.spring.dependency-management' version '1.0.9.RELEASE'
+    id 'java'
 }
 
 group = 'com.cubetiqs'
@@ -9,23 +9,23 @@ version = '0.0.1-SNAPSHOT'
 sourceCompatibility = '1.8'
 
 repositories {
-	mavenCentral()
+    mavenCentral()
 }
 
 dependencies {
-	 implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
-	implementation 'org.springframework.boot:spring-boot-starter-web'
-	implementation 'io.springfox:springfox-swagger2:2.9.2'
-	implementation 'io.springfox:springfox-swagger-ui:2.9.2'
+    implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
+    implementation 'org.springframework.boot:spring-boot-starter-web'
+    implementation 'io.springfox:springfox-swagger2:2.9.2'
+    implementation 'io.springfox:springfox-swagger-ui:2.9.2'
 
-	runtimeOnly 'org.postgresql:postgresql'
-	compileOnly 'org.projectlombok:lombok'
-	annotationProcessor 'org.projectlombok:lombok'
-	testImplementation('org.springframework.boot:spring-boot-starter-test') {
-		exclude group: 'org.junit.vintage', module: 'junit-vintage-engine'
-	}
+    runtimeOnly 'org.postgresql:postgresql'
+    compileOnly 'org.projectlombok:lombok'
+    annotationProcessor 'org.projectlombok:lombok'
+    testImplementation('org.springframework.boot:spring-boot-starter-test') {
+        exclude group: 'org.junit.vintage', module: 'junit-vintage-engine'
+    }
 }
 
 test {
-	useJUnitPlatform()
+    useJUnitPlatform()
 }

src/main/java/com/cubetiqs/demo/DemoApplication.java

@@ -1,13 +1,21 @@
 package com.cubetiqs.demo;
 
+import com.cubetiqs.demo.domain.UserEntity;
+import org.springframework.boot.CommandLineRunner;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 
 @SpringBootApplication
-public class DemoApplication {
+public class DemoApplication implements CommandLineRunner {
 
 	public static void main(String[] args) {
 		SpringApplication.run(DemoApplication.class, args);
 	}
 
+
+	@Override
+	public void run(String... args) throws Exception {
+		UserEntity userEntity = new UserEntity();
+		userEntity.setEmail("a@gm.com");
+	}
 }

src/main/java/com/cubetiqs/demo/domain/BaseEntity.java

@@ -0,0 +1,47 @@
+package com.cubetiqs.demo.domain;
+
+import org.springframework.data.domain.Persistable;
+
+import javax.persistence.*;
+import java.io.Serializable;
+import java.util.Date;
+
+@MappedSuperclass
+public class BaseEntity<ID extends Serializable> implements Serializable, Persistable<ID> {
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private ID id;
+
+    @Column(name = "created_date")
+    @Temporal(TemporalType.TIMESTAMP)
+    private Date createdDate;
+
+    public void setId(ID id) {
+        this.id = id;
+    }
+
+    @Override
+    public ID getId() {
+        return id;
+    }
+
+    @Override
+    public boolean isNew() {
+        return id == null;
+    }
+
+    public Date getCreatedDate() {
+        return createdDate;
+    }
+
+    public void setCreatedDate(Date createdDate) {
+        this.createdDate = createdDate;
+    }
+
+    @PrePersist
+    public void beforeSave() {
+        if (createdDate == null) {
+            createdDate = new Date();
+        }
+    }
+}

src/main/java/com/cubetiqs/demo/domain/CommentEntity.java

@@ -0,0 +1,27 @@
+package com.cubetiqs.demo.domain;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+import lombok.NoArgsConstructor;
+
+import javax.persistence.*;
+
+@Entity
+@Table(name = "comments")
+@EqualsAndHashCode(callSuper = true)
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+public class CommentEntity extends BaseEntity<Long> {
+    @Column(columnDefinition = "TEXT")
+    private String contents;
+
+    @ManyToOne(fetch = FetchType.EAGER, cascade = {CascadeType.REFRESH, CascadeType.DETACH})
+    @JoinColumn(name = "post_id")
+    private PostEntity post;
+
+    @ManyToOne(fetch = FetchType.EAGER, cascade = {CascadeType.REFRESH, CascadeType.DETACH})
+    @JoinColumn(name = "user_id")
+    private UserEntity user;
+}

src/main/java/com/cubetiqs/demo/domain/PostEntity.java

@@ -0,0 +1,29 @@
+package com.cubetiqs.demo.domain;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+import lombok.NoArgsConstructor;
+
+import javax.persistence.*;
+import java.util.Collection;
+import java.util.List;
+
+@Entity
+@Table(name = "posts")
+@EqualsAndHashCode(callSuper = true)
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+public class PostEntity extends BaseEntity<Long> {
+    @Column
+    private String title;
+    @Column(columnDefinition = "TEXT")
+    private String contents;
+    @ManyToOne(fetch = FetchType.EAGER, cascade = {CascadeType.REFRESH, CascadeType.DETACH})
+    @JoinColumn(name = "user_id")
+    private UserEntity user;
+
+    @OneToMany(mappedBy = "post", fetch = FetchType.EAGER, cascade = {CascadeType.ALL}, orphanRemoval = true)
+    private Collection<CommentEntity> comments;
+}

src/main/java/com/cubetiqs/demo/domain/UserEntity.java

@@ -0,0 +1,21 @@
+package com.cubetiqs.demo.domain;
+
+import lombok.*;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Table;
+
+@Entity
+@Table(name = "users")
+@EqualsAndHashCode(callSuper = true)
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+public class UserEntity extends BaseEntity<Long> {
+    @Column(name = "email", length = 100, unique = true, nullable = false)
+    private String email;
+
+    @Column(length = 100)
+    private String password;
+}