java - 将此 HQL 转换为条件

Question

我有以下 HQL 语句:

select auditRecord from AuditRecordEntity auditRecord where auditRecord.auditAccount.accountId = :accountId

我想将其转换为使用 javax.persistence.criteria.CriteriaBuilder，但我不确定该怎么做，非常感谢任何帮助!

CriteriaBuilder builder = getEntityManager().getCriteriaBuilder();
CriteriaQuery<Object> query = builder.createQuery();
Root<AuditRecordEntity> root = query.from(AuditRecordEntity.class);
// what next?

Answer 1

试试这个:

CriteriaBuilder criteriaBuilder = getEntityManager().getCriteriaBuilder();
CriteriaQuery<AuditRecordEntity> criteriaQuery = criteriaBuilder.createQuery(AuditRecordEntity.class);
Root<AuditRecordEntity> root = criteriaQuery.from(AuditRecordEntity.class);

Predicate predicate = criteriaBuilder.equal(root.get("auditAccount").get("accountId"), accountId);
criteriaQuery.where(predicate);

TypedQuery<AuditRecordEntity> query = em.createQuery(criteriaQuery);

return query.getSingleResult();