mongodb更新操作

1.普通更新

sql

db.units.update({
    "_id": ObjectId("605374c0966b648b2d99ef24")
},  {
    $set: {
        'userList': [
            {
                userId: "6054098870b571137b9d430f",
                aliasNo: "F8N38P63",
                aliasName: "F8N38P63",
                _class: "com.otis.one.se.model.unit.UnitManager"
            }
        ]
    }
});

代码：

    Query query = new Query(Criteria.where("_id").is(new ObjectId(id)));
    Update update = new Update().set("userList", userList);
    UpdateResult updateResult = mongo.updateFirst(query, update, COLLECTION_NAME);

2.更新某一字段的list $addToSet $each

db.inventory.update(
   { _id: 2 },
   { $addToSet: { tags: { $each: [ "camera", "electronics", "accessories" ] } } }
 )

代码：

    Query query = new Query(Criteria.where("_id").is(2));
    Update update = new Update();
    Update.AddToSetBuilder ab = update.new AddToSetBuilder("tags");
    update = ab.each(tags);
    UpdateResult updateResult = mongo.updateFirst(query, update, COLLECTION_NAME);

3.更新子属性list中的某一字段

代码

  public long updateDeviceUser(UnitUserParam unitUserParam, String userId) {
    Unit unit = getUnitByUnitIdStr(unitUserParam.getUnitId());
    Update update = new Update();
    update.set("userList.$.aliasNo", unitUserParam.getAliasNo());
    update.set("userList.$.aliasName", unitUserParam.getAliasName());
    Query updateQuery = new Query(
        Criteria.where("unitNumber").is(unit.getUnitNumber()).and("userList.userId").is(userId));
    UpdateResult updateResult = mongo.updateFirst(updateQuery, update, COLLECTION_NAME);
    return updateResult.getModifiedCount();
  }