How to store userid, roleid and privilegeid in single table using #JoinTable? - spring

Question

Requirement : Create table using #JoinColumn annotation in User entity class, which contain columns like, user_id, authority_id(means role), privilege_id.
Condition: Authority and Privileges also have one to many relationship.
#OneToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER)
#JoinTable(name = "pm_authority_privilege",
joinColumns = #JoinColumn(name = "authority_id", referencedColumnName = "id"),
inverseJoinColumns = #JoinColumn(name = "privilege_id", referencedColumnName = "id"))
private Set<Privilege> privileges = new HashSet<>();
As per above configuration i got privilege as part of authority json.
Issue : I'm confused what should be variable type if i take two value in 'inverseJoinColumns'.
When i try to do same thing using following way it gives error of transactional object because privilege is exist on two place.
#ManyToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER)
#JoinTable(name = "pm_user_authority_privilege",
joinColumns = #JoinColumn(name = "user_id", referencedColumnName = "id"),
inverseJoinColumns = {
#JoinColumn(name = "authority_id", referencedColumnName = "id")
// #JoinColumn(name = "privilege_id", referencedColumnName = "id")
})
private Set<Authority> authorities = new HashSet<>();
#ManyToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER)
#JoinTable(name = "pm_user_authority_privilege",
joinColumns = #JoinColumn(name = "user_id", referencedColumnName = "id"),
inverseJoinColumns = #JoinColumn(name = "privilege_id", referencedColumnName = "id"))
private Set<Privilege> privileges = new HashSet<>();
Note : There is page which have no. of roles and all relevant privilege of those role.(handle using code define in issue)
And from that i select some of role and save them when user created.
{
"authorities": [
{
"authorityId": "ec071816-31e6-11ea-bae1-0242ac110005",
"authorityName": "MANAGER",
"description": null,
"privileges": [
{
"description": "",
"privilege": "CREATE_USER",
"privilegeId": "ba9a4952-4d53-42e9-94fe-8373d334819e"
},
{
"description": null,
"privilege": "SHOW_DATA",
"privilegeId": "ec06de1b-31e6-11ea-bae1-0242ac110005"
}
]
}
],
"email": "test#gmail.com",
"password": "test#123",
"phoneNo": "8575456595",
"status": true,
"userId": null,
"username": "test"
}

Answer 1

i found something. It is not up to the mark but it help solve your problem.
As per i understand you need two kind of relationship,
Authority & Privileges
User & Authority & Privileges (Privileges also exist in Authority object)
In such case you have to follow this,
Create one UserDTO which access user info and authority JSON (So privilege not show two times).
Based on that JSON create two entity and their object. One for User and another for UserAuthorityPrivilege.
UserAuthorityPrivilege is the table which contain your three required data and as obvious all three are required so define them as embedded key.
Give the relation between user and UserAuthorityPrivilege table
Embaded Class :
#Data
#Embeddable
#NoArgsConstructor
#AllArgsConstructor
public class EmbeddedUserAccess implements Serializable {
#Column(name = "user_id") private UUID userId;
#Column(name = "authority") private String authority;
#Column(name = "privilege") private String privilege; }
Entity Class
#Entity
#Table(name = "pm_user_authority_privilege")
#Data
#NoArgsConstructor
#AllArgsConstructor
public class UserAuthorityPrivilege {
#EmbeddedId
private EmbeddedUserAccess id;
#Null
#Column(name = "store_id", nullable = true)
private UUID storeId;
}
DTO:
#Data
#NoArgsConstructor
#AllArgsConstructor
public class UserDTO {
private UUID userId;
private String username;
private String email;
private String phoneNumber;
private String password;
private Boolean status;
private Authority authority;
}
Fetch:
UserAuthorityPrivilege access = null;
EmbeddedUserAccess embedded = null;
Set<UserAuthorityPrivilege> accessibilities = new HashSet<>();
Authority authority = userDTO.getAuthority();
for (Privilege privilege : authority.getPrivileges()) {
access = new UserAuthorityPrivilege();
embedded = new EmbeddedUserAccess();
embedded.setUserId(user.getUserId());
embedded.setAuthority(authority.getAuthority());
embedded.setPrivilege(privilege.getPrivilege());
access.setId(embedded);
accessibilities.add(access);
}
You have to update code similerly.
I have one query, your user relate with single authority or multiple.
For more brief description add comment.