Querydsl在查询中设置提取模式

Question

我有一种情况,卡实体有一个人的外键.

public class Card  implements java.io.Serializable {
 private String cardid;    
 private Person person;

@ManyToOne(fetch=FetchType.LAZY)
@JoinColumn(name="USERID")
public Person getPerson() {
    return this.person;
}
}

该人的默认提取类型是LAZY.我可以在查询中为EAGER指定获取类型:

QCard qCard = QCard.card;
JPQLQuery query = getQuery().from(qCard);
query.list(qCard);

谢谢你的帮助.

Answer 1

你试过了吗

QCard qCard = QCard.card;
List<Card> cards = getQuery().from(qCard)
    .innerJoin(qCard.person).fetch()
    .list(qCard);

对于QueryDSL 4.0.2+

QCard qCard = QCard.card;
List<Card> cards = getQuery().from(qCard)
    .innerJoin(qCard.person).fetchJoin()
    .select(qCard).fetch();