java - Spring Data JPA user posts -


i have user login , profile view, users have posts. can guide me in right direction?

i have user entity:

    @entity @table(name = "usr", indexes = { @index(columnlist = "email", unique = true) }) // using usr because in may conflict name of class public class user {      public static final int email_max = 250;     public static final int name_max = 50;      /*      * public static enum role {      *       * unverified, blocked, administrator      *       * }      */      // primary key long, needs annotated @id     @id     @generatedvalue(strategy = generationtype.identity)     private long id;      // add columns     @column(nullable = false, length = email_max)     private string email;      @column(nullable = false, length = name_max)     private string name;      // no length, password encrypted longer value     // user enters     @column(nullable = false)     private string password;      /*      * //email verification code      *       * @column(length = 16) private string verificationcode;      *       * public string getverificationcode() { return verificationcode; }      *       * public void setverificationcode(string verificationcode) {      * this.verificationcode = verificationcode; }      *       *       * @elementcollection(fetch = fetchtype.eager) private set<role> roles = new      * hashset<role>();      *       *       *       * public set<role> getroles() { return roles; }      *       * public void setroles(set<role> roles) { this.roles = roles; }      */      public long getid() {         return id;     }      public void setid(long id) {         this.id = id;     }      public string getemail() {         return email;     }      public void setemail(string email) {         this.email = email;     }      public string getname() {         return name;     }      public void setname(string name) {         this.name = name;     }      public string getpassword() {         return password;     }      public void setpassword(string password) {         this.password = password;     }      public boolean iseditable() {         user loggedin = mytools.getsessionuser();          if (loggedin == null) {             return false;         }          return loggedin.getid() == id;     }  }

and repo:

    public interface userrepository extends jparepository<user, long> {      // @query("select u user u u.email = ?1")     user findbyemail(string email);  }

now, in order have posts user, create posts entity , repository @manytoone in post pojo? i'm trying make twitter first gotta users post. if know of tutorial explaining that'd great.

create second entity (java class) e.g. userpost:

@entity @table(...) public class userpost {     @id     @generatedvalue(strategy = generationtype.identity)     private long id;      private long userid;      ... }

then add @onetomany relationship field user. cascading, lazy-loading, etc. depends on how you'd use it. it'd inside user:

@onetomany(cascade={...}) @joincolumn(name="userid") private set<userpost> posts;

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