我想按实体中属性的内容进行搜索
我有一个简单的类来定义用户:
@Entity
public class User {
@Id
@Column(name = "pers_id")
private int persId;
@Column(name = "full_name")
private String fullName;
@OneToMany
@JoinColumn(name = "PERS_ID")
private List<UserLanguages> languages = new ArrayList<UserLanguages>();
}
一个用户可以有多种语言,这是在用户和语言之间建立链接的类。
@Entity
public class UserLanguages {
@Column(name="pers_id")
private int persId;
@Id
@Column(name="lang_iso_code")
private String langISO;
@Column(name="lang_full_name")
private String langFullName;
@Column(name="order_seq")
private int order;
}
@Entity
public class Language {
@Id
@Column(name="ID")
private long id;
@Column(name = "CODE")
private String code;
}
我创建了一个对象来进行搜索:
public class UserFilter {
private String name;
private List<Language> languages;
}
我已经定义了一个服务:
@Service("userService")
public class UserServiceImpl implements UserService {
@Override
public List<User> findByFilter(UserFilter userFilter) {
final Criteria criteria = userDao.createCriteria();
if (userFilter.getName() != null) {
for (final String token : userFilter.getName().toLowerCase().trim().split(" ")) {
criteria.add(Restrictions.like("fullName", "%" + token + "%"));
}
}
if (null != userFilter.getLanguages() && userFilter.getLanguages().size() > 0) {
final List<String> contents = new ArrayList<String>(userFilter.getLanguages().size());
for (final Language lang : userFilter.getLanguages()) {
contents.add(lang.getCode());
}
criteria.add(Restrictions.in("languages", contents));
}
return userDao.findByCriteria(criteria);
}
我的问题是如何搜索语言。我想找到在 userFilter 参数中定义的所有使用这种或那些语言的用户。关于语言的部分在服务中的 findByFilter 方法中不起作用。你能帮助我吗?