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我們使用JBoss 7的Hibernate 4.0對Oracle 11G數據庫。 java pojo類具有這兩個屬性（除了其他屬性）。請注意，SalesPerson類有一個SalesPersonId，它是一個持久存儲到SalesOrder表中的組合鍵。Hibernate Criteria使用Oracle 11G的setMaxResults給org.hibernate.exception.SQLGrammarException：ORA-00918：列模糊定義
public class SalesOrder extends OurBaseClass<SalesOrder>{
private SalesPersonId salesPersonId;
private SalesPerson salesPerson;
@Embedded
@AttributeOverride(name = "location", column = @Column(name = "sale_person_loc"))
@XmlElement
public SalesPersonId getSalesPersonId() {
return salesPersonId;
}
public void setSalesPersonId(SalesPersonId salesPersonId) {
this.salesPersonId = salesPersonId;
}
//The below object contains a SalesPersonId as composite primary key
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumns({
@JoinColumn(name = "sales_person_no", insertable = false, updatable = false),
@JoinColumn(name = "sales_person_loc", insertable = false, updatable = false)
})
@XmlElement
public SalesPerson getSalesPerson() {
return salesPerson;
}
public void setSalesPerson(SalesPerson salesPerson) {
this.salesPerson = salesPerson;
}
}
的休眠標準代碼如下：
Session session = (Session) manager.getDelegate();
Criteria criteria = session
.createCriteria(SalesOrder.class,"so")
.createAlias("salesPerson", "salesperson",JoinType.LEFT_OUTER_JOIN)
.setMaxResults(100)
.addOrder(Order.asc("id"));
由休眠生成的SQL是這樣的：
select * from (select this_.sales_person_no as sales_person4_641_2_,
this_.sales_person_loc as sales_person5_641_2_,
this_.SALES_PERSON_NO as SALES_PERSON4_641_2_
from SALES_ORDER this_, sales_person sales_person2_
where this_.sales_person_no=sales_person2_.sales_person_no(+) and
this_.sales_person_loc=sales_person2_.loc(+)
order by this_.order_no asc) where rownum <= ?
被返回的錯誤是由於所產生的重複的列名通過休眠。關於這個錯誤有什麼可以做的嗎？我知道如果從pojo中刪除SalesPersonId，我不會收到錯誤，但是，我被告知該類需要SalesPerson和SalesPersonId。我也知道如果我刪除setMaxResults，但我沒有收到錯誤，但這不是一個選項。感謝您的任何幫助。