具有路径导航的相关实体的 JPA 标准或条件

Question

我有以下实体结构

public class Application {
    @JoinColumn(name = "account_id")
    @ManyToOne
    private Account account;

    @JoinColumn(name = "involved_account_id")
    @ManyToOne
    private Account involvedAccount;
}

public class Account {
    private string id;
    private string name;
}

我想获取 account 名称或 involvedAccount 名称与给定帐户名称匹配的所有应用程序。

CriteriaQuery<Application> query = cb.createQuery(Application.class);
Root<Application> root = query.from(Application.class);

Predicate conditions = cb.conjunction();

conditions = cb.and(conditions, cb.or(
    cb.like(
        cb.upper(root.get("account").get("name")), 
        accountName.toUpperCase()
    ), cb.like(
        cb.upper(root.get("involvedAccount").get("name")), 
        accountName.toUpperCase())
    )
);

query.where(conditions);
query.select(root);

但是上面产生了以下 where 条件，它使用 and 作为主键而不是 or

where applicati0_.account_id=account1_.id
    and applicati0_.involved_account_id=account2_.id
    and 1=1
    and (
        upper(account1_.name) like ?
        or upper(account2_.id) like ?
    )

这是条件作为表达式失败的地方 applicati0_.account_id=account1_.id and applicati0_.involved_account_id=account2_.id 使用 and 而不是 or

Answer 1

按照评论中的建议使用 join。

我现在无法测试，但像这样的东西应该可以工作：

CriteriaQuery<Application> query = cb.createQuery(Application.class);
Root<Application> root = query.from(Application.class);
Join<Application, Account> account = root.join("account");
Join<Application, Account> involvedAccount = root.join("involvedAccount");

Predicate conditions = cb.conjunction();

conditions = cb.and(conditions, cb.or(
    cb.like(
        cb.upper(account.get("name")), 
        accountName.toUpperCase()
    ), cb.like(
        cb.upper(involvedAccount.get("name")), 
        accountName.toUpperCase())
    )
);

query.where(conditions);
query.select(root);

具有路径导航的相关实体的 JPA 标准或条件

JPA Criteria OR condition on related entity with path navigation

hibernate

jpa

criteria-api