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("$sort", new BasicDBObject("sum", 1));
List<DBObject> pipeline = Arrays.asList(group, sort);
// allowDiskUse
AggregationOptions options =
AggregationOptions.builder().allowDiskUse(true).batchSize(10000).build();
Cursor cursor = device.aggregate(pipeline, options);
List<DBObject> list = new ArrayList<DBObject>();
while (cursor.hasNext()) {
DBObject object = cursor.next();
DBObject newObj = new BasicDBObject();
newObj.put("device", object.get("_id"));
newObj.put("sum", object.get("sum"));
list.add(newObj);
}
cursor.close();
return list;
}
@Override
public boolean hasNext() {
if (__cursor != null) {
return __cursor.hasNext();
} else {
return super.hasNext();
}
}
// 获得一天的转换漏斗
public List<DBObject> getConversionFunnel(String date) {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
DBObject match = null;
try {
match = new BasicDBObject("$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;
}