jpa合并谓词数组+；搜索外键值

我想进行如下搜索：

Select * From Users where ( ( username Like %criteria% OR firstName Like %criteria% ...) AND (CarId = carId) ) 

我将2个谓词组合到一个数组中，但只需要使用1个谓词

@Entity
@Table(name = "users", uniqueConstraints = { @UniqueConstraint(columnNames = { "username" }) })
public class User{
@Id
@GeneratedValue(generator = "seq_id_user", strategy = GenerationType.SEQUENCE)
@SequenceGenerator(name = "seq_id_user", sequenceName = "seq_id_user")
private Long id;
@Column(unique = true)
@NotNull
private String username;
@Column(name = "first_name")
private String firstName;
....
@ManyToOne
@JoinColumn(name = "car_id", nullable = false, foreignKey = @ForeignKey(name = "CAR_ID_FK"))
private Car car;
...

该车为同类车型，用户有1把外键

@Override
public List<User> searchUsers(String criteria, Car car) {
    //TODO: check params and return values based on test cases

    CriteriaBuilder builder = entityManager.getCriteriaBuilder();
    CriteriaQuery<User> query = builder.createQuery(User.class);
    Root<User> r = query.from(User.class);

    Predicate predicate = builder.conjunction();

    predicate = builder.or(predicate, builder.like(r.get("username"), "%" + criteria + "%"));
    predicate = builder.or(predicate, builder.like(r.get("firstName"), "%" + criteria + "%"));
    predicate = builder.or(predicate, builder.like(r.get("lastName"), "%" + criteria + "%"));
    predicate = builder.or(predicate, builder.like(r.get("nickname"), "%" + criteria + "%"));

    // how to implement the filter by foreign key value with AND? - can be a sub query to, which will be executed first time
    // I  need to use 1 Predicate, not a Predicate Array!
    query.select(r).where(predicate);

    List<User> result = entityManager.createQuery(query).getResultList();

@覆盖
公共列表搜索用户（字符串条件、汽车）{
//TODO:根据测试用例检查参数和返回值
CriteriaBuilder=entityManager.getCriteriaBuilder（）；
CriteriaQuery=builder.createQuery（User.class）；
Root r=query.from（User.class）；
谓词=builder.conjunction（）；
谓词=builder.or（谓词，builder.like（r.get（“用户名”），“%”+条件+“%”）；
谓词=builder.or（谓词，builder.like（r.get（“firstName”），“%”+条件+“%”）；
谓词=builder.or（谓词，builder.like（r.get（“lastName”），“%”+条件+“%”）；
谓词=builder.or（谓词，builder.like（r.get（“昵称”），“%”+条件+“%”）；
//如何实现带和的按外键值过滤？可以是对的子查询，将第一次执行
//我需要使用1个谓词，而不是谓词数组！
query.select（r）.where（谓词）；
List result=entityManager.createQuery（query.getResultList（）；