JPA 子查询返回对象并用于查询多选

Question

我有一个使用条件查询的 java spring 应用程序。该查询具有多选，其中一个值是带来完整实体的子查询。该应用程序在我们创建它的原始环境中运行，但我们尝试在新环境中运行并更新了一些库，但现在不起作用。

案例示例

@Entity
public class User {
    private Long id;
    private String name;
    private String lastName;
}

@Entity
public class Address {
    private Long id;
    private String foo;
    private String bar;
}

@Getter
@AllArgsConstructor
public class DataResultQuery {
    private String name;
    private String lastName;
    private Address firstAddress;
    private Address lastAddress;
}

public class Example {

    public DataResultQuery getData(Long id) {
        var builder = entityManager.getCriteriaBuilder();
        var query = builder.createQuery(DataResultQuery.class);

        var user = query.from(User.class);
        var address = user.join(User_.addresses);

        var firstAddress = getSubquery(address);
        var lastAddress = getSubquery(address);

        query.multiselect(
                user.get(User_.name),
                user.get(User_.lastName),
                firstAddress.getSelection(),
                lastAddress.getSelection()
        );

        query.where(); //Predicates

        var typedQuery = entityManager.createQuery(query);

        return typedQuery.getSingleResult();
    }

    private Subquery<Address> getSubquery(Join<?, Address> address) {
        var builder = entityManager.getCriteriaBuilder();
        var query = builder.createQuery(Address.class);
        var subquery = query.subquery(Address.class);

        var address = subquery.from(Address.class);

        subquery.select(address);

        subquery.where(); //Predicates

        return subquery;
    }
}

当我尝试执行查询时返回类似这样的内容

Cannot instantiate class 'com.package.example.result_queries.DataResultQuery' (it has no constructor with signature

我尝试搜索一些内容，但没有找到任何内容，并尝试手动创建完整的构造函数

Answer 1

尝试添加@NoArgConstructor，然后看看效果如何