java - Convert JPA model classes into the MongoDB model class? -


i new mongodb , looking implement below 3 classes in mongodb. have annotated model class @document, not sure how can implement relationship ?

how can implement relationship here ?

authority.java

@entity @table(name = "authority") public class authority {      @id     @column(name = "id")     @generatedvalue(strategy = generationtype.sequence, generator = "authority_seq")     @sequencegenerator(name = "authority_seq", sequencename = "authority_seq", allocationsize = 1)     private long id;      @column(name = "name", length = 50)     @notnull     @enumerated(enumtype.string)     private authorityname name;      @manytomany(mappedby = "authorities", fetch = fetchtype.lazy)     private list<user> users;

user.java

@entity @table(name = "user") public class user {      @id     @column(name = "id")     @generatedvalue(strategy = generationtype.sequence, generator = "user_seq")     @sequencegenerator(name = "user_seq", sequencename = "user_seq", allocationsize = 1)     private long id;      @column(name = "username", length = 50, unique = true)     @notnull     @size(min = 4, max = 50)     private string username;      @column(name = "password", length = 100)     @notnull     @size(min = 4, max = 100)     private string password;      @column(name = "firstname", length = 50)     @notnull     @size(min = 4, max = 50)     private string firstname;      @column(name = "lastname", length = 50)     @notnull     @size(min = 4, max = 50)     private string lastname;      @column(name = "email", length = 50)     @notnull     @size(min = 4, max = 50)     private string email;      @column(name = "enabled")     @notnull     private boolean enabled;      @column(name = "lastpasswordresetdate")     @temporal(temporaltype.timestamp)     @notnull     private date lastpasswordresetdate;      @manytomany(fetch = fetchtype.eager)     @jointable(             name = "user_authority",             joincolumns = {@joincolumn(name = "user_id", referencedcolumnname = "id")},             inversejoincolumns = {@joincolumn(name = "authority_id", referencedcolumnname = "id")})     private list<authority> authorities;

authorityname.java

public enum authorityname {     role_user, role_admin }


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