nodejs猫鼬批量更新

问题描述

我有一个数据集合，我需要为每个文档添加一个新字段.如果我运行查询以获取所有文档，并且每一个node.js的更新都停止了，则可能是因为内存泄漏

I've a collection of data and I need to add for every documents a new field. If I run a query to get all documents and the update every single one node.js is stopped, may be for memory leak

这是我的代码

var express = require('express');

var geocoderProvider = 'google';
var httpAdapter = 'http';

var People = require("./models/people").collection.initializeOrderedBulkOp();

var app = express();

var geocoder = require('node-geocoder').getGeocoder(geocoderProvider, httpAdapter, {});

app.get('/', function (req, res) {
  People.find({}, function (err, docs) {
    if (err) {
      res.send(err);
    }else{
      docs.forEach( function (doc){
        geocoder.geocode({address: doc.address, country: 'Italy', zipcode: doc.cap}, function(error, value) {
          doc.loc.coordinates[0]=value[0].latitude;
          doc.loc.coordinates[1]=value[0].longitude;
          People.update({ _id: doc._id }, { $set: { loc: doc.loc }}, { multi: true }, function (error){
            if(error){
              console.error('ERROR!');
            }
          });
        });
      });
    }
  });
});

var server = app.listen(3000, function () {
  var host = server.address().address
  var port = server.address().port
  console.log('Example app listening at http://%s:%s', host, port)
});

有没有办法用猫鼬批量更新?预先感谢

There is any way to bulk update with mongoose?Thanks in advance

推荐答案

有关查询和更新查询的更多详细信息.

More detailed info about the query and update query.

var bulk = People.collection.initializeOrderedBulkOp();
    bulk.find(query).update(update);
    bulk.execute(function (error) {
       callback();
    });

查询正在使用数组搜索.
更新需要$ set

Query is searching with array.
Update needs a $set

var bulk = People.collection.initializeOrderedBulkOp();
    bulk.find({'_id': {$in: []}}).update({$set: {status: 'active'}});
    bulk.execute(function (error) {
         callback();
    });

查询是搜索ID

var bulk = People.collection.initializeOrderedBulkOp();
    bulk.find({'_id': id}).update({$set: {status: 'inactive'}});
    bulk.execute(function (error) {
         callback();
    });

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