예제 #1
0
  public List<DBObject> getSourceBrowsers() {

    DBObject groupFields = new BasicDBObject("_id", "$device");
    groupFields.put("sum", new BasicDBObject("$sum", "$sum"));
    DBObject group = new BasicDBObject("$group", groupFields);
    DBObject sort = new BasicDBObject("$sort", new BasicDBObject("sum", 1));

    List<DBObject> pipeline = Arrays.asList(group, sort);

    // allowDiskUse
    AggregationOptions options =
        AggregationOptions.builder().allowDiskUse(true).batchSize(10000).build();
    Cursor cursor = device.aggregate(pipeline, options);

    List<DBObject> list = new ArrayList<DBObject>();
    while (cursor.hasNext()) {
      DBObject object = cursor.next();
      DBObject newObj = new BasicDBObject();
      newObj.put("device", object.get("_id"));
      newObj.put("sum", object.get("sum"));
      list.add(newObj);
    }
    cursor.close();
    return list;
  }
 @Override
 public boolean hasNext() {
   if (__cursor != null) {
     return __cursor.hasNext();
   } else {
     return super.hasNext();
   }
 }
예제 #3
0
  // 获得一天的转换漏斗
  public List<DBObject> getConversionFunnel(String date) {
    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
    DBObject match = null;
    try {
      match = new BasicDBObject("$match", new BasicDBObject("date", sdf.parse(date)));
    } catch (ParseException e) {

    }
    DBObject groupFields = new BasicDBObject("_id", "");
    groupFields.put("step1sum", new BasicDBObject("$sum", "$step1"));
    groupFields.put("step2sum", new BasicDBObject("$sum", "$step2"));
    groupFields.put("step3sum", new BasicDBObject("$sum", "$step3"));

    DBObject group = new BasicDBObject("$group", groupFields);
    // DBObject sort = new BasicDBObject("$sort", new BasicDBObject("sum", 1));

    List<DBObject> pipeline = Arrays.asList(match, group);

    // allowDiskUse
    AggregationOptions options =
        AggregationOptions.builder().allowDiskUse(true).batchSize(10000).build();
    Cursor cursor = CF.aggregate(pipeline, options);

    List<DBObject> list = new ArrayList<DBObject>();
    while (cursor.hasNext()) {
      DBObject object = cursor.next();
      DBObject newObj = new BasicDBObject();
      //            DBObject _id = (DBObject)object.get("_id");
      //            newObj.put("date",sdf.format(_id.get("$date")));
      DBObject newObj1 = new BasicDBObject();
      newObj1.put("step", "访问本站");
      newObj1.put("num", object.get("step1sum"));
      list.add(newObj1);
      DBObject newObj2 = new BasicDBObject();
      newObj2.put("step", "浏览商品");
      newObj2.put("num", object.get("step2sum"));
      list.add(newObj2);

      DBObject newObj3 = new BasicDBObject();
      newObj3.put("step", "完成交易");
      newObj3.put("num", object.get("step3sum"));
      list.add(newObj3);
    }
    cursor.close();
    return list;
  }