Beispiel #1
0
 public Long getID(String collName) {
   // 跟据表名查询
   Query<Sequence> q = ds.find(Sequence.class, "id", collName);
   UpdateOperations<Sequence> uOps = ds.createUpdateOperations(Sequence.class);
   uOps.inc("currentIdValue");
   Sequence sequence = ds.findAndModify(q, uOps); // 执行查询并更新,该操作椐有原子性
   if (sequence == null) {
     sequence = new Sequence(collName, 1l);
     ds.save(sequence);
   }
   return sequence.getCurrentIdValue();
 }
  public <T> UpdateResults<T> update(T ent, UpdateOperations<T> ops) {
    MappedClass mc = mapr.getMappedClass(ent);
    Query<T> q = (Query<T>) createQuery(mc.getClazz());
    q.disableValidation().filter(Mapper.ID_KEY, getId(ent));

    if (mc.getFieldsAnnotatedWith(Version.class).size() > 0) {
      MappedField versionMF = mc.getFieldsAnnotatedWith(Version.class).get(0);
      Long oldVer = (Long) versionMF.getFieldValue(ent);
      q.filter(versionMF.getNameToStore(), oldVer);
      ops.set(versionMF.getNameToStore(), VersionHelper.nextValue(oldVer));
    }

    return update(q, ops);
  }
Beispiel #3
0
 @Override
 public void saveOrUpdate(User user) {
   Query<User> q = createQuery().filter("uid", user.getUid());
   User pUser = q.get();
   if (pUser == null) save(user);
   else {
     UpdateOperations<User> uo = createUpdateOperations();
     uo.set("screenName", user.getScreenName());
     uo.set("name", user.getName());
     uo.set("profileImageUrl", user.getProfileImageUrl());
     uo.set("followersSize", user.getFollowersSize());
     uo.set("tweetsSize", user.getTweetsSize());
     uo.set("detail", user.getDetail());
     update(q, uo);
     user.setId(pUser.getId());
   }
 }
Beispiel #4
0
 @Override
 public void incPrefSize(long userId) {
   UpdateOperations<User> uo = createUpdateOperations();
   uo.inc("prefSize", 1);
   update(createQuery().filter("id", userId), uo);
 }