Jpa Joda Money中的BigMoney条件查询(实体中的多列字段)
我对条件查询有一个严重的问题 我的实体类如下所示:Jpa Joda Money中的BigMoney条件查询(实体中的多列字段),jpa,criteria,criteria-api,criteriaquery,Jpa,Criteria,Criteria Api,Criteriaquery,我对条件查询有一个严重的问题 我的实体类如下所示: class X { ... @Columns(columns = { @Column(name = "priceCurrency", nullable = false), @Column(name = "priceAmount", nullable = false)}) @Type(type = "org.jadira.usertype.moneyandcurrency.joda.Persistent
class X {
...
@Columns(columns = {
@Column(name = "priceCurrency", nullable = false),
@Column(name = "priceAmount", nullable = false)})
@Type(type = "org.jadira.usertype.moneyandcurrency.joda.PersistentBigMoneyAmountAndCurrency")
@Basic(fetch = FetchType.EAGER)
BigMoney price;
...
}
我还有另一个类Y,它有一个列表xs
我还有一个正常的JPA查询:
SELECT y
FROM Y y
LEFT JOIN y.xs x
GROUP BY y
ORDER BY SUM(y.price.amount)
现在我想把这个转移到CriteriaQuery。我从以下几点开始:
CriteriaBuilder cb = entityManager.getCriteriaBuilder();
CriteriaQuery<Y> q = cb.createQuery(Y.class);
Root<Y> root = q.from(Y.class);
ListJoin<Y, X> j = root.join(Y_.xs, JoinType.LEFT);
q.groupBy(root);
现在,条件查询如下所示:
CriteriaBuilder cb = entityManager.getCriteriaBuilder();
CriteriaQuery<Y> q = cb.createQuery(Y.class);
Root<Y> root = q.from(Y.class);
ListJoin<Y, X> j = root.join(Y_.xs, JoinType.LEFT);
q.groupBy(root);
Path<BigDecimal> a = j.get(X_.priceAmount);
TypedQuery<Y> tq = entityManager.createQuery(q);
CriteriaBuilder cb=entityManager.getCriteriaBuilder();
CriteriaQuery q=cb.createQuery(Y.class);
根根=q.from(Y.class);
ListJoin j=root.join(Y_ux.xs,JoinType.LEFT);
q、 groupBy(root);
路径a=j.get(X_u.priceAmount);
TypedQuery tq=entityManager.createQuery(q);
看起来您想将JPA的CriteriaBuilder API与Hibernate专有注释一起使用@Columns
是的,也许这就是问题所在。我已经发布了一些解决方法(可能是唯一可能的)
Path<BigDecimal> x = j.get("price.amount");
Path<BigDecimal> x = j.get(X_.price).get("amount");
class X {
...
@Column(name = "priceCurrency", nullable = false)
@Basic(fetch = FetchType.EAGER)
String priceCurrency;
@Column(name = "priceAmount", nullable = false)
@Basic(fetch = FetchType.EAGER)
String priceAmount;
...
public BigMoney getPrice() {
return BigMoney.of(CurrencyUnit.of(priceCurrency), priceAmount);
}
public void setPrice() {
this.priceCurrency = price.getCurrencyUnit().toString();
this.priceAmount = price.getAmount();
}
}
CriteriaBuilder cb = entityManager.getCriteriaBuilder();
CriteriaQuery<Y> q = cb.createQuery(Y.class);
Root<Y> root = q.from(Y.class);
ListJoin<Y, X> j = root.join(Y_.xs, JoinType.LEFT);
q.groupBy(root);
Path<BigDecimal> a = j.get(X_.priceAmount);
TypedQuery<Y> tq = entityManager.createQuery(q);