User.java 文件源码

@ManyToMany(/*
             * targetEntity = Group.class, cascade = { CascadeType.PERSIST,
             * CascadeType.MERGE }
             */)
@JoinTable(name = TableConstants.GROUP_USER_TABLE, joinColumns = @JoinColumn(name = FieldConstants.USER_ID), inverseJoinColumns = @JoinColumn(name = FieldConstants.GROUP_ID))
@Cascade(org.hibernate.annotations.CascadeType.SAVE_UPDATE)
@LazyCollection(LazyCollectionOption.TRUE)
public Set<Group> getGroups() {
    return groups;
}