Create Student entity and repository with role addition in user

src/main/java/cat/udl/eps/softarch/demo/domain/Student.java

@@ -0,0 +1,25 @@
+package cat.udl.eps.softarch.demo.domain;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonValue;
+import jakarta.persistence.Entity;
+import jakarta.validation.constraints.NotEmpty;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+import org.springframework.security.core.GrantedAuthority;
+import org.springframework.security.core.authority.AuthorityUtils;
+
+import java.util.Collection;
+
+@Entity
+@Data
+@EqualsAndHashCode(callSuper = true)
+public class Student extends User {
+
+    @NotEmpty
+    private String phoneNumber;
+
+    @NotEmpty
+    private String name;
+
+}

src/main/java/cat/udl/eps/softarch/demo/domain/User.java

@@ -55,6 +55,9 @@ public void encodePassword() {
 	@JsonValue(value = false)
 	@JsonProperty(access = JsonProperty.Access.READ_ONLY)
 	public Collection<? extends GrantedAuthority> getAuthorities() {
+		if (this instanceof Student) {
+			return AuthorityUtils.commaSeparatedStringToAuthorityList("ROLE_STUDENT");
+		}
 		return AuthorityUtils.commaSeparatedStringToAuthorityList("ROLE_USER");
 	}
 

src/main/java/cat/udl/eps/softarch/demo/repository/StudentRepository.java

@@ -0,0 +1,7 @@
+package cat.udl.eps.softarch.demo.repository;
+
+import cat.udl.eps.softarch.demo.domain.Student;
+import org.springframework.data.repository.CrudRepository;
+
+public interface StudentRepository extends CrudRepository<Student, Long> {
+}