Use Long as ID and GenerationType.IDENTITY)

src/main/java/cat/udl/eps/softarch/tfgfinder/domain/Category.java

@@ -15,7 +15,7 @@
 public class Category extends UriEntity<Long> {
 
     @Id
-    @GeneratedValue()
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long id;
 
 

src/main/java/cat/udl/eps/softarch/tfgfinder/domain/Chat.java

@@ -1,6 +1,8 @@
 package cat.udl.eps.softarch.tfgfinder.domain;
 
 import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
 import jakarta.persistence.Id;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
@@ -12,6 +14,7 @@
 public class Chat extends UriEntity<Long>{
 
     @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long id;
 
-}
+}

src/main/java/cat/udl/eps/softarch/tfgfinder/domain/Interest.java

@@ -1,33 +1,22 @@
 package cat.udl.eps.softarch.tfgfinder.domain;
 
-import com.fasterxml.jackson.annotation.JsonProperty;
-
 import jakarta.persistence.*;
-import jakarta.validation.constraints.Email;
-import jakarta.validation.constraints.NotBlank;
 
-import com.fasterxml.jackson.annotation.JsonValue;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
-import org.hibernate.validator.constraints.Length;
 import org.springframework.format.annotation.DateTimeFormat;
-import org.springframework.security.core.GrantedAuthority;
-import org.springframework.security.core.authority.AuthorityUtils;
-import org.springframework.security.core.userdetails.UserDetails;
-import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
-import org.springframework.security.crypto.password.PasswordEncoder;
 
 import java.time.ZonedDateTime;
-import java.util.Collection;
 
 @Entity
-@Table(name = "interest") 
+@Table(name = "interest")
 @Data
 @EqualsAndHashCode(callSuper = true)
-public class Interest extends UriEntity<String> {
+public class Interest extends UriEntity<Long> {
 
 	@Id
-	private String id;
+	@GeneratedValue(strategy = GenerationType.IDENTITY)
+	private Long id;
 
 	@DateTimeFormat
 	private ZonedDateTime when;
@@ -40,4 +29,4 @@ public enum Status {
 
 	@Enumerated (EnumType.STRING)
 	private Status status;
-}
+}

src/main/java/cat/udl/eps/softarch/tfgfinder/domain/Invite.java

@@ -15,6 +15,7 @@
 public class Invite extends UriEntity<Long>  {
 
     @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long id;
 
     @NotNull

src/main/java/cat/udl/eps/softarch/tfgfinder/domain/Message.java

@@ -15,6 +15,7 @@
 public class Message extends UriEntity<Long> {
 
     @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long id;
 
     @NotNull

src/main/java/cat/udl/eps/softarch/tfgfinder/domain/Proposal.java

@@ -16,7 +16,7 @@
 public class Proposal extends UriEntity<Long> {
 
     @Id
-    @GeneratedValue()
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long id;
 
 
@@ -46,4 +46,4 @@ public class Proposal extends UriEntity<Long> {
     @ManyToOne
     private User user; // Reference to the User entity
 
-}
+}