hibernate - org.hibernate.QueryException - 无法解析属性

Question

我正在尝试使用 Hibernate 连接到数据库。当前表格具有以下布局:

(field1, field2, field3, optional1, optional2...)

其中 field1、field2、field3 都是外键，它们一起组成一个组合键。

我有以下类(class):

@Entity
@Table(name = "db_table_mainRecords")
public class MainRecord implements Serializable{
    @EmbeddedId
    private MainRecordKey   lqk;
    @Transient
    private String          field1;
    @Transient
    private int         field2;
    @Transient
    private int         field3;
    @Column(name = "optional_1")
    private double          optional1;
    @Column(name = "optional_2")
    private double          optional2;

....
  // Getters and setters for all fields, including fields within MainClassKey
....
}

伴随着它:

@Embeddable
@Table(name = "db_table_mainRecords")
public class MainRecordKey implements Serializable{
    @Column(name = "field1")
    private String field_1; 
    @Column(name = "field_2")
    private int field2;
    @Column(name = "field_3")
    private int field3;
}

我收到以下错误:

org.hibernate.QueryException - could not resolve property: field3 of: path.MainRecord at org.hibernate.persister.entity.AbstractPropertyMapping.propertyException(AbstractPropertyMapping.java:67)

这是我的 Bo/dao 代码:

public List<MainRecord> getMainRecords(int e){
    Criterion crit1 = Restrictions.eq("field3", e);
    ArrayList<MainRecord> list = (ArrayList<MainRecord>) dao.getMainRecords(crit1);
}


public List<MainRecord> getMainRecords(Criterion criteria){
    if(criteria == null)
        return new ArrayList<MainReocrd>();
    return (List<MainRecord>) getHibernateTemplate().findByCriteria(DetachedCriteria.forClass(MainRecord.class).add(criteria));
}

Answer 1

尝试将映射文件 MainRecord 中的所有 int 更改为 Integer 并将 double 更改为 Double 和 MainRecordKey。

更新试试这个:

Restrictions.eq("lqk.field3", e);