Edit Question - KnowledgeHub

Title Body

I have the following entity (only relevant mappings shown): @Entity @Table(name = "PQs") public class PQ implements Serializable { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) @Column private Integer id; @Column private String name; @ManyToOne(fetch = FetchType.LAZY) // lazy XToOne @JoinColumn(name = "user_id", referencedColumnName = "person_id") private User user; @OneToOne(mappedBy = "pq", fetch = FetchType.LAZY) // lazy XToOne private Group group; @OneToOne(mappedBy = "pq", fetch = FetchType.LAZY) // lazy XToOne private Tendering tendering; ... } Note the comments above: there are three @XToOne relationships to other entities: User (a SecurityIdentity sub class with a simple ID as PK, referenced by PQ representing the owner): @Entity @Table(name = "Users") @DiscriminatorValue(value = "user") public class User extends SecurityIdentity { @Column private String name; @OneToMany(mappedBy = "user") private Set<PQ> pqs = new HashSet<PQ>(); ... } Group (also a SecurityIdentity sub class with a simple ID as PK, references the PQ to represent a set of users that can interact with that PQ): @Entity @Table(name = "Groups") @DiscriminatorValue(value = "group") public class Group extends SecurityIdentity { @OneToOne(fetch = FetchType.LAZY) @JoinColumn(name = "pq_id", referencedColumnName = "id") private PQ pq; ... } Tendering : @Entity @Table(name = "Tenderings") public class Tendering implements Serializable { @Id @Column(name = "pq_id", insertable = false, updatable = false) private Integer pqId; @Column(name = "external_code") private String externalCode; @OneToOne(fetch = FetchType.LAZY) @JoinColumn(name = "pq_id", re

Tags (comma-separated) Cancel