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POThe Number passed into an update changes when saved into a collection (MongoDB)
 

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  1. POThe Number passed into an update changes when saved into a collection (MongoDB)
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    <p>I have a Mongoose schema that uses a numerical value as the <code>_id</code> e.g. <code>102375848308956134094</code>. When I save the collection and <code>findById</code> in Mongoose or <code>find({ _id: 102375848308956134094 });</code> in the Mongo shell the correct document is returned though the <code>_id</code> is different to the one previously provided (instead its <code>102375848308956140000</code>).</p> <p>This is a problem as if I were to save a collection the the <code>_id</code> <code>102375848308956134095</code> (notice the last digit changed from a <code>4</code> to a <code>5</code>), MongoDB errors out (<code>E11000 duplicate key error index... dup key: { : 1.023758483089561e+20</code>).</p> <p>Is MongoDB treating the <code>Number</code> as a floating point number?</p> <p>Here is an example query:</p> <pre><code>&gt; db.users.find({ _id: 102375848308956134094 }).pretty(); { "_id" : 102375848308956140000, "access_token" : "", "access_token_expires" : ISODate(""), "given_name" : "Jonathon", "refresh_token" : "" } </code></pre> <p><em>NB: I have removed the <code>access_token</code> etc. values.</em></p> <p>When that document was saved however, I absolutely specified the <code>_id</code> value to be <code>102375848308956134094</code>.</p> <p>Any ideas what is going on?</p> <p>Here is my schema:</p> <pre><code>/*jslint es5: true, indent: 2, node:true, nomen: true, maxlen: 80, vars: true*/ 'use strict'; module.exports = function (mongoose) { var Schema = new mongoose.Schema({ _id: Number, access_token: String, access_token_expires: Date, given_name: String, refresh_token: String }); return mongoose.model('User', Schema); }; </code></pre> <p>And this is the <code>upsert</code>:</p> <pre><code>... models.user.update( { _id: user.id }, { access_token: access_token, access_token_expires: new Date(Date.now() + (59 * 60 * 1000)), given_name: user.given_name, refresh_token: refresh_token }, { upsert: true }, /*TODO: Handle upsert errors*/ function (err, numberAffected, raw) { if (err) { console.log(err); } else { delete req.session.state; req.session._id = user.id; res.redirect('/'); } } ); ... </code></pre> <p>All help, as always, is much appreciated!</p> <p>/<em>Edit</em>/</p> <p>I have tried @JohnnyHK's answer of using <code>Long</code> numbers however, the <code>_id</code> still seems to be stored incorrectly in the document. It is saving the <code>_id</code> as <code>-8304616133301175602</code> instead of <code>102375848308956134094</code>. I have tried several queries to <code>find</code> the document but only only supplying the <code>_id</code> as <code>-8304616133301175602</code> returns the correct document e.g.</p> <pre><code>&gt; db.users.find().pretty(); { "_id" : NumberLong("-8304616133301175602"), "access_token" : "ya29.1.AADtN_VyfAvBlam2HCERpI0JcJkcwg22t1124tZw0G7pgRyTcaIuGU-dX3H4Q-M", "access_token_expires" : ISODate("2013-12-09T12:42:53.098Z"), "given_name" : "Jonathon", "refresh_token" : "1/-2GQ_s3JogCr45Z1CBKWBHTEcjE0Nda9xkpFFdl7wT0" } &gt; db.users.find({ _id: 102375848308956134094 }).pretty(); &gt; db.users.find({ _id: NumberLong(102375848308956134094) }).pretty(); &gt; db.users.find({ _id: NumberLong('102375848308956134094') }).pretty(); Mon Dec 9 11:46:26.433 Error: could not convert "102375848308956134094" to NumberLong &gt; db.users.find({ _id: -8304616133301175602 }).pretty(); { "_id" : NumberLong("-8304616133301175602"), "access_token" : "", "access_token_expires" : ISODate(""), "given_name" : "Jonathon", "refresh_token" : "" } </code></pre> <p>Any thoughts as to why this may be?</p>
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