CommunityDAOImpl.java 文件源码

@Override
public Community findByName(String name) {
    LOG.info("findByName(name = " + name + ")");
    CriteriaBuilder builder = em.getCriteriaBuilder();
    CriteriaQuery<Community> criteria = builder.createQuery(Community.class);
    Root<Community> community = criteria.from(Community.class);
    criteria.where(builder.equal(community.get("name"), name));
    TypedQuery<Community> query = em.createQuery(criteria);
    try {
        Community c = query.getSingleResult();
        return initializeCom(c);
    } catch (NoResultException e) {
        LOG.error(e.toString());
        return null;
    }
}