请参阅底部的编辑。这似乎是Mongo-C和or本地节点 - mongodb问题,而不是Mongoose问题。本机节点mongodb驱动程序在由Mongo-C创建时返回正确的文档,但是具有空数字数组
我有一个存储在MongoDB中的地震数据的实时采集。一个称为数据的关键字是一个int数组样本。当我通过Mongoose查询这个集合时,一切看起来都很好,但数据键作为一个空数组返回时,应该返回为长度为nsamp(样本数)的Number数组。
我已经定义了猫鼬架构为:
var waveformSchema = new Schema({
key: String,
nsamp: Number,
starttime: Number,
endtime: Number,
samprate: Number,
datatype: String,
data: [Number]
});
通过蒙戈查询以下记录
db.cwaves.find({"_id" : ObjectId("5733bedeadb31b2b8a0fef2e")})
它返回
{ "_id" : ObjectId("5733bedeadb31b2b8a0fef2e"),
"key" : "BROK.HNZ.UW.--", "nsamp" : 172,
"starttime" : 1463008988.38, "endtime" : 1463008989.2350001,
"samprate" : 200, "datatype" : "i4",
"data" : [ 1385, 1384, 1385, 1384, 1381, 1386, 1390, 1381, 1385,
1387, 1382, 1387, 1384, 1381, 1385, 1386, 1384, 1382,
1383, 1384, 1386, 1384, 1381, 1385, 1386, 1384, 1386,
1386, 1385, 1385, 1387, 1382, 1383, 1386, 1381, 1382,
1384, 1382, 1383, 1386, 1386, 1382, 1383, 1386, 1384,
1385, 1385, 1384, 1387, 1387, 1383, 1383, 1388, 1385,
1384, 1387, 1382, 1383, 1385, 1384, 1385, 1384, 1383,
1385, 1384, 1383, 1387, 1382, 1386, 1387, 1381, 1386,
1386, 1390, 1386, 1383, 1388, 1381, 1384, 1389, 1385,
1384, 1386, 1387, 1384, 1382, 1384, 1382, 1378, 1387,
1390, 1383, 1385, 1383, 1381, 1384, 1385, 1387, 1380,
1379, 1387, 1383, 1384, 1384, 1384, 1385, 1382, 1389,
1389, 1381, 1385, 1388, 1387, 1386, 1383, 1386, 1383,
1382, 1385, 1382, 1384, 1386, 1383, 1382, 1385, 1386,
1386, 1387, 1385, 1382, 1380, 1383, 1387, 1378, 1382,
1388, 1383, 1385, 1387, 1385, 1386, 1388, 1386, 1384,
1382, 1382, 1385, 1385, 1384, 1378, 1384, 1387, 1383,
1383, 1382, 1384, 1384, 1388, 1386, 1380, 1386, 1388,
1386, 1383, 1384, 1384, 1383, 1387, 1385, 1384, 1386,
1382 ]
}
但如果我这样做,在猫鼬同一查询数据数组为空:
我得到以下控制台输出:
listening on port: 8888
[ { data: [],
datatype: 'i4',
samprate: 200,
endtime: 1463008989.2350001,
starttime: 1463008988.38,
nsamp: 172,
key: 'BROK.HNZ.UW.--',
_id: 5733bedeadb31b2b8a0fef2e } ]
我是否正确定义模式?
编辑1:更改脚本:
Cwave.find({"_id":"5733bedeadb31b2b8a0fef2e"}).lean().exec(
function(err, cwaves){ if (err) return console.error(err);
console.log(cwaves); })
产量:
[ { _id: 5733bedeadb31b2b8a0fef2e,
key: 'BROK.HNZ.UW.--',
nsamp: 172,
starttime: 1463008988.38,
endtime: 1463008989.2350001,
samprate: 200,
datatype: 'i4',
data: [ data: 1382 ] } ]
编辑2:在尝试上述后看来,这可能是本机MongoDB的驱动程序。我改变了我的脚本:
var MongoClient = require('mongodb').MongoClient
, assert = require('assert')
, app = require('express')()
, http = require('http').Server(app)
, io = require('socket.io')(http);
//get configs
var Conf = require("./config.js"); //config file
var conf = new Conf();
//Connect to Mongo
var url = "mongodb://" + conf.mongo.user + ":" + conf.mongo.passwd + "@"
+ conf.mongo.host + ":" + conf.mongo.port + "/" + conf.mongo.dbname
+ "?authMechanism=" + conf.mongo.authMech + "&authSource=" + conf.mongo.authSource;
MongoClient.connect(url, function(err, db) {
if(err) throw err;
var collection = db.collection('cwaves');
collection.find({starttime: 1463008988.38, key: "BROK.HNZ.UW.--"}).toArray(function(err, results) {
console.log(results);
db.close();
});
});
,得到了相同的结果编辑1.
[ { _id: 5733bedeadb31b2b8a0fef2e,
key: 'BROK.HNZ.UW.--',
nsamp: 172,
starttime: 1463008988.38,
endtime: 1463008989.2350001,
samprate: 200,
datatype: 'i4',
data: [ data: 1382 ] } ]
编辑3:MongoDB的集合是通过使用蒙戈-CI C程序填充创建了三个类似的文件:1)通过mongo-c例程(原始),2)node-mongodb和3)Mongo Console。它们在mongo控制台中看起来类似,当我进行查找时(除了id和键名),所以我不觉得需要添加输出,除非有人真的需要它。我改变了我的节点脚本如下:
MongoClient.connect(url, function(err, db) {
if(err) throw err;
var collection = db.collection('cwaves');
collection.find().toArray(function(err, results) {
// console.log(result);
for(var i=0; i< results.length; i++){
console.log("key: " + results[i].key + " type: " + Object.prototype.toString.call(results[i].data) + " length: " + results[i].data.length);
}
db.close();
});
});
其中产量:
key: BROK.HNZ.UW.-- type: [object Array] length: 0
key: mongo_console type: [object Array] length: 172
key: node-mongodb type: [object Array] length: 172
我创建了一个Ruby脚本,使用蒙戈的宝石,并能够读取所有三个数组。
你可以试试这个方法: Cwave.find({ “_ ID”: “5733bedeadb31b2b8a0fef2e”})。瘦肉()EXEC(函数(ERR,cwaves){ 如果(ERR)返回console.error(ERR) ; console.log(cwaves); }); –
我用您的请求更新了我的问题。数据:[数据:1382],这似乎是最后一个因素。 – joncon