在HQL NOT IN子句中指定列表参数

Question

我有以下代码在HQL查询List的NOT IN子句中设置参数

private static final String FIND_AVAILABLE_OPERATORS = "FROM Domain domain WHERE domain.type = :type AND domain.operators NOT IN (:operators)";

@SuppressWarnings("unchecked")
@Override
public List<Domain> findAvailableOperators(Domain domain) {
    Query query = null;
    if (domain.getOperators().isEmpty()) {
        query = getCurrentSession().createQuery(FIND_BY_DOMAIN_TYPE); // run another query
    } else {
        query = getCurrentSession().createQuery(FIND_AVAILABLE_OPERATORS);
        query.setParameterList("operators", domain.getOperators());
    }

    query.setParameter("type", DomainType.OPERATOR);
    return query.list();
}

但是SQLGrammarException当我List不是空的时候我会得到一个

org.hibernate.exception.SQLGrammarException: No value specified for parameter 2

我使用setParameterList() 不正确吗？

执行的SQL似乎是

Hibernate: select domain0_.domain_id as domain1_2_, domain0_.country as country2_, domain0_.name as name2_, domain0_.type as type2_ from domain domain0_ cross join domain_operators operators1_, domain domain2_ where domain0_.domain_id=operators1_.parent and operators1_.child=domain2_.domain_id and (. not in  (?)) and domain0_.type=?

我从未见过(. not in (?)).

编辑:我的Domain实体

@Entity
@Table
public class Domain {
    @Id
    @GenericGenerator(name = "generator", strategy = "increment")
    @GeneratedValue(generator = "generator")
    @Column(name = "domain_id")
    private Long domainId;

    @Column(nullable = false, unique = true)
    @NotNull
    private String name;

    @Column(nullable = false)
    @NotNull
    @Enumerated(EnumType.STRING)
    private DomainType type;

    @ManyToMany(cascade = {
            CascadeType.PERSIST,
            CascadeType.MERGE
    }, fetch = FetchType.EAGER)
    @JoinTable(joinColumns = {
            @JoinColumn(name = "domain_id")
    }, inverseJoinColumns = {
            @JoinColumn(name = "code")
    })
    private Set<NetworkCode> networkCodes = new HashSet<>();

    @ManyToMany(fetch = FetchType.EAGER)
    @JoinTable(joinColumns = {
            @JoinColumn(name = "parent", referencedColumnName = "domain_id")
    }, inverseJoinColumns = {
            @JoinColumn(name = "child", referencedColumnName = "domain_id")
    })
    private Set<Domain> operators = new HashSet<>();

    @ManyToOne(optional = false, fetch = FetchType.EAGER)
    private Country country;

    public Domain() {}
        ... setters/getters
    }

Answer 1

正如您在HQL参考中所看到的,[not] in谓词仅适用于单值表达式.

您将不得不使用如下查询:

private static final String FIND_AVAILABLE_OPERATORS = "SELECT d FROM Domain as d LEFT OUTER JOIN d.operators as o WHERE d.type = :type AND o.domainID not in (:operators)";

然后,您可以建立一个List<Long>只用domain.getOperators()ID和它的使用setParameterList()方法.