MetaDataService.java 文件源码

long countQMetricWithMetaData(T entity, SetAttribute<QMBaseIndicator, QModelTagData> attribute) {
    CriteriaBuilder cb = em.getCriteriaBuilder();
    CriteriaQuery<Long> query = cb.createQuery(Long.class);
    Root<QMMetric> root = query.from(QMMetric.class);
    Join<QMMetric, QModelTagData> join = root.join(attribute);
    query.where(join.get(QModelTagData_.tagId).in(entity.getId()));
    query.select(cb.countDistinct(root));
    return em.createQuery(query).getSingleResult();
}