task/3382: Rename 'user_name' to 'username'

core/src/main/java/se/su/dsv/scipro/system/Username.java

@@ -1,17 +1,26 @@
 package se.su.dsv.scipro.system;
 
-import jakarta.persistence.*;
+import jakarta.persistence.Cacheable;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.Table;
+import jakarta.persistence.UniqueConstraint;
+
 import java.util.Objects;
 
 @Entity
+@Table(name="username", uniqueConstraints={@UniqueConstraint(name = "uk_username", columnNames={"username"})})
 @Cacheable(true)
-@Table(name="user_name", uniqueConstraints={@UniqueConstraint(name = "uk_user_name", columnNames={"user_name"})})
 public class Username extends DomainObject {
 	@Id
 	@GeneratedValue(strategy = GenerationType.IDENTITY)
 	private Long id;
 	
-	@Column(name = "user_name", nullable = false)
+	@Column(name = "username", nullable = false)
 	private String username;
 	
 	@ManyToOne(optional=false)

core/src/main/resources/db/migration/V390__harmonize_table_attribute_name.sql

@@ -587,14 +587,10 @@ alter table `username` drop foreign key `FK_17moq4bksxe30ihucce3jovdc`;
 alter table `username` drop key `FK_17moq4bksxe30ihucce3jovdc`;
 alter table `username` drop key `username_must_be_unique`;
 
-rename table `username` to `user_name`;
+alter table `username` add constraint uk_username unique(username);
 
-alter table `user_name` rename column `username` to `user_name`;
-
-alter table `user_name` add constraint uk_user_name unique(user_name);
-
-alter table `user_name`
-    add constraint fk_user_name_user_id
+alter table `username`
+    add constraint fk_username_user_id
         foreign key (user_id) references user (id)
             on delete cascade on update cascade;