JPA / Hibernate本機查詢無法識別帶有EmbeddedId的參數

Question

我正在使用Hibernate / JPA執行本機MySql查詢。 我想獲得計數器的價值。

例如以下查詢崩潰：

"SELECT sizeList FROM myCounter WHERE myColA=?1 AND myColB=?2 AND LIMIT 1"

錯誤：

java.lang.IllegalArgumentException: Parameter with that name [1] did not exist

資料來源：

方法：

@Override
public Long getSizeList(String myColA, String myColB) {
    Query q = em.createNativeQuery("MyCounter.getSizeList");
    q.setParameter(1, myColA);
    q.setParameter(2, myColB);
    return (Long) q.getSingleResult();
}

實體：

@Entity
@Table(name = "myCounter")
@XmlRootElement
@NamedNativeQueries({
@NamedNativeQuery(name = "MyCounter.getSizeList", query = "SELECT sizeList FROM myCounter WHERE myColA=?1 AND myColB=?2 AND LIMIT 1", resultClass = MyCounter.class)})
public class MyCounter implements Serializable {

private static final long serialVersionUID = 1L;
@EmbeddedId
protected MyCounterPK myCounterPK;
@Column(name = "sizeList")
private BigInteger sizeList;

public PostListCounterPTTESLTTT() {
}

...

public BigInteger getSizeList() {
    return sizeList;
}

}

可嵌入：

@Embeddable
public class MyCounterPK implements Serializable {
@Basic(optional = false)
@NotNull
@Size(min = 1, max = 255)
@Column(name = "myColA")
private String myColA;
@Basic(optional = false)
@NotNull
@Size(min = 1, max = 50)
@Column(name = "myColB")
private String myColB;

public MyCounterPK() {
}

...

}

有誰知道在這種情況下如何使用setParameter（）嗎？

我嘗試了：

//case 1:
"SELECT sizeList FROM myCounter WHERE myColA=?1 AND myColB=?2 AND LIMIT 1"
q.setParameter(1, myColA); //the same error

//case 2:
"SELECT sizeList FROM myCounter WHERE myColA=?1 AND myColB=?2 AND LIMIT 1"
q.setParameter("1", myColA); //the same error

//case 3:
"SELECT sizeList FROM myCounter WHERE myColA=:myColA AND myColB=:myColB AND LIMIT 1"
q.setParameter("myColA", myColA); //the same error

Answer 1

代替

Query q = em.createNativeQuery("MyCounter.getSizeList");

嘗試這個：

Query q = em.createNamedQuery("MyCounter.getSizeList");