相关疑难解决方法(0)

使用 JPA Criteria API 生成正确和/或条件

我正在尝试在“或”和“和”条件中生成带有多个括号的查询,但没有生成内部括号。外部谓词的括号正确生成,但不是内部谓词的括号。代码:

    CriteriaBuilder criteriaBuilder = this.getEntityManager().getCriteriaBuilder();
    CriteriaQuery<ConfigurationKey> query = criteriaBuilder.createQuery(ConfigurationKey.class);
    Root<ConfigurationKey> configurationKeyRoot = query.from(ConfigurationKey.class);
    Join<ConfigurationKey, Customer> configurationKeyCustomerJoin = configurationKeyRoot.join(ConfigurationKey_.customer);

    final List<Predicate> predicates = new ArrayList<>();
    predicates.add(criteriaBuilder.equal(configurationKeyCustomerJoin.get(Customer_.externalId), customerId));
    predicates.add(criteriaBuilder.equal(configurationKeyRoot.get(ConfigurationKey_.configType), configType));

    final List<Predicate> orPredicates = new ArrayList<>();
    keys.forEach((x, y) -> {
                orPredicates.add(
                        criteriaBuilder.and(
                                criteriaBuilder.equal(configurationKeyRoot.get(ConfigurationKey_.keyType), x),
                                criteriaBuilder.equal(configurationKeyRoot.get(ConfigurationKey_.keyValue), y)
                        )
                );
            }

    );

    predicates.add(criteriaBuilder.or(orPredicates.toArray(new Predicate[orPredicates.size()])));
    query.where(criteriaBuilder.and(predicates.toArray(new Predicate[predicates.size()])));
    query.select(configurationKeyRoot);
    TypedQuery<ConfigurationKey> typedQuery = this.getEntityManager().createQuery(query);
Run Code Online (Sandbox Code Playgroud)

生成的查询:

select
    configurat0_.id as id1_1_,
    configurat0_.createdAt as createdA2_1_,
    configurat0_.updatedAt as updatedA3_1_,
    configurat0_.configType as configTy4_1_,
    configurat0_.customerId as customer7_1_,
    configurat0_.keyType as keyType5_1_,
    configurat0_.keyValue as keyValue6_1_ …
Run Code Online (Sandbox Code Playgroud)

java sql jpa criteria-api jpa-2.0

4
推荐指数
1
解决办法
4791
查看次数

标签 统计

criteria-api ×1

java ×1

jpa ×1

jpa-2.0 ×1

sql ×1