Mongoose v3 :: The Future is Bright

MONGOOSE V3 Looking ahead jsconf.ar 2012 @aaronheckmann

MONGOOSE V3

MONGOOSE V3•What’s wrong

MONGOOSE V3•What’s wrong•The Fix

MONGOOSE V3•What’s wrong•The Fix•Improvements

MONGOOSE V3•What’s wrong•The Fix•Improvements•Support

MONGOOSE V3 The Future Is Bright

MONGOOSE V3What’s Wrong?

MONGOOSE V3Beautiful is better than ugly.Explicit is better than implicit.Simple is better than complex.Complex is better than complicated.Flat is better than nested.Sparse is better than dense.Readability counts.Special cases arent special enough to break the rules.Although practicality beats purity.Errors should never pass silently.Unless explicitly silenced.In the face of ambiguity, refuse the temptation to guess.There should be one-- and preferably only one --obvious way to do it.Although that way may not be obvious at first unless youre Dutch.Now is better than never.Although never is often better than *right* now.If the implementation is hard to explain, its a bad idea.If the implementation is easy to explain, it may be a good idea.Namespaces are one honking great idea -- lets do more of those! -- Tim Peters, The Zen of Python http://www.python.org/dev/peps/pep-0020/

MONGOOSE V3Beautiful is better than ugly.Explicit is better than implicit.Simple is better than complex.Complex is better than complicated.Flat is better than nested.Sparse is better than dense. There should be one--Readability counts.Special cases arent special enough to break the rules.Although practicality beats purity. and preferably only oneErrors should never pass silently.Unless explicitly silenced.In the face of ambiguity, refuse the temptation to guess.There should be one-- and preferably only one --obvious way to do it. --obvious way to do it.Although that way may not be obvious at first unless youre Dutch.Now is better than never.Although never is often better than *right* now.If the implementation is hard to explain, its a bad idea.If the implementation is easy to explain, it may be a good idea.Namespaces are one honking great idea -- lets do more of those! -- Tim Peters, The Zen of Python http://www.python.org/dev/peps/pep-0020/

MONGOOSE V3One way

MONGOOSE V3One way User.where(‘age’).$gt(17).select(‘name’).exec(cb) User.where(‘age’).gt(17).select({‘name’: 1}).exec(cb) User.where(‘age’).gt(17).select(‘name’, 1).run(cb) User.find({ age: { $gt: 17 }}).select([‘name’]).exec(cb) User.find({ age: { $gt: 17 }}, [‘name’]).run(cb)

MONGOOSE V3http://www.motifake.com/image/demotivational-poster/1106/determination-determination-faceplant-demotivational-posters-1307398930.jpg

MONGOOSE V3API pollution Query methods$or -> or $in -> in $near -> near$nor -> nor $nin -> nin $within -> within$gt -> gt $all -> all $box -> box$gte -> gte $regex ->regex $center - > center$lt -> lt $size -> size $centerSphere -> centerSphere$lte -> lte $slice -> slice $maxDistance ->maxDistance

MONGOOSE V3API pollution Query methods$ne -> ne only -> select({ path: 1 })$mod -> mod exclude -> select({ path: 0 })$exists -> exists run -> exec$elemMatch -> elemMatch notEqualTo -> neasc -> sort({ path: 1 }) wherein -> withindesc -> sort({ path: 0}) ﬁelds -> select

MONGOOSE V3API pollution Connection methodscreateConnectioncreateSetConnectionconnectconnectSet

MONGOOSE V3The Fix?createConnection $nin -> nin $ne -> necreateSetConnection $all -> all $mod -> modconnect $regex -> regex $exists -> existsconnectSet $size -> size $elemMatch -> elemMatch$or -> or $slice -> slice asc -> sort({ path: 1 })$nor -> nor $near -> near desc -> sort({ path: 0})$gt -> gt $within -> within only -> select({ path: 1 })$gte -> gte $box -> box exclude -> select({ path: 0 })$lt -> lt $center -> center run -> exec$lte -> lte $centerSphere -> centerSphere notEqualTo -> ne$in -> in $maxDistance -> maxDistance wherein -> within ﬁelds -> select

MONGOOSE V3The Fix kill all the thingscreateConnection $nin -> nin $ne -> necreateSetConnection $all -> all $mod -> modconnect $regex -> regex $exists -> existsconnectSet $size -> size $elemMatch -> elemMatch$or -> or $slice -> slice asc -> sort({ path: 1 })$nor -> nor $near -> near desc -> sort({ path: 0})$gt -> gt $within -> within only -> select({ path: 1 })$gte -> gte $box -> box exclude -> select({ path: 0 })$lt -> lt $center -> center run -> exec$lte -> lte $centerSphere -> centerSphere notEqualTo -> ne$in -> in $maxDistance -> maxDistance wherein -> within fields -> select

MONGOOSE V3The Fix kill all the thingscreateConnection $nin -> nin $ne -> necreateSetConnection $all -> all $mod -> modconnect $regex -> regex $exists -> existsconnectSet $size -> size $elemMatch -> elemMatch$or -> or $slice -> slice asc -> sort({ path: 1 })$nor -> nor $near -> near desc -> sort({ path: 0})$gt -> gt $within -> within only -> select({ path: 1 })$gte -> gte $box -> box exclude -> select({ path: 0 })$lt -> lt $center -> center run -> exec$lte -> lte $centerSphere -> centerSphere notEqualTo -> ne$in -> in $maxDistance -> maxDistance wherein -> within fields -> select http://soundbible.com/1575-High-Deﬁnition-Machine-Gun.html http://openclipart.org/detail/20561/set-of-bullet-holes-by-rg1024

MONGOOSE V3The Fix remove query aliasesCoffee.where(‘ﬂavor’).$in(array).run()

MONGOOSE V3The Fix remove query aliasesCoffee.where(‘ﬂavor’).$in(array).run() Coffee.where(‘ﬂavor’).in(array).exec()

MONGOOSE V3The Fix remove query aliasesCoffee.ﬁnd().asc(‘ﬂavor’).run()

MONGOOSE V3The Fix remove query aliasesCoffee.find().asc(‘flavor’).run() Coffee.find().sort(‘flavor’).exec()

MONGOOSE V3The Fix Combine connection methodsgoose.createSetConnection(connString)

MONGOOSE V3The Fix Combine connection methodsgoose.createSetConnection(connString) goose.createConnection(connString)

MONGOOSE V3The Fix Combine connection methodsmongoose.connectSet(connString)

MONGOOSE V3The Fix Combine connection methodsmongoose.connectSet(connString) mongoose.connect(connString)

MONGOOSE V3What’s Wrong?

MONGOOSE V3What’s Wrong? Query method arguments

MONGOOSE V3What’s Wrong? Query method argumentsquery.select(array)query.select(‘path’, 1, ‘path’, 1)query.select({ key: 0 })query.select(‘space delimited’)query.hint(‘path’, 1, ‘path’, 1)query.hint({ key: 1})

MONGOOSE V3The Fix Query method argumentsquery.select(‘include -exclude’)

MONGOOSE V3The Fix Query method argumentsquery.select(‘include -exclude’)query.select({ include: 1, exclude: 0 })

MONGOOSE V3The Fix Query method argumentsquery.select({ include: 1, exclude: 0 })query.select(‘include -exclude’)query.sort({ include: 1, exclude: 0 })query.sort(‘include -exclude’)

MONGOOSE V3Missing MongoDB features

MONGOOSE V3Missing MongoDB features•Map Reduce

MONGOOSE V3Missing MongoDB features•Map Reduce var o = { map: mapFn, reduce: rFn } Talks.mapReduce(o, function (err, res) { console.log(res) })

MONGOOSE V3Missing MongoDB features•Map Reduce var o = { map: mapFn, reduce: rFn } o.out = { replace: ‘mapped_talks’ } Talks.mapReduce(o, function (err, res) { res.find().where().exec(function (err, docs) { console.log(res) }) })

MONGOOSE V3Missing MongoDB features•FindAndModify

MONGOOSE V3Missing MongoDB features•FindAndModify // old way var o = { _id: anObjectId } Talks.findOne(o, function (err, doc) { doc.name = ‘peanut butter’; doc.save() })

MONGOOSE V3Missing MongoDB features•FindAndModify // new way var o = { _id: anObjectId } , up = { $set: { name: ‘peanut butter’}} Talks.findOneAndUpdate(o, up, function (err, doc) { console.log(doc) })

MONGOOSE V3Missing MongoDB features•FindAndModify var o = { name: ‘peanut butter’ } Talks.findOneAndRemove(o, function (err, res) { console.log(res) })

MONGOOSE V3Missing MongoDB features•FindAndModify Talks.findByIdAndUpdate(id, update, cb) Talks.findByIdAndRemove(id, update, cb)

MONGOOSE V3Missing MongoDB features•Map Reduce•FindAndModify•Capped collections * * soon!

MONGOOSE V3Missing MongoDB features•Map Reduce•FindAndModify•Capped collections *•Aggregation * * soon!

MONGOOSE V3Missing MongoDB features•Aggregation Article.aggregate( { $project : { author : 1, tags : 1 }} , { $unwind : "$tags" } , { $group : { _id : { tags : 1 } , authors : { $addToSet : "$author" } } }); * soon!

MONGOOSE V3Missing MongoDB features•Map Reduce•FindAndModify•Capped collections *•Aggregation *•Improved geo-spatial support * * soon!

MONGOOSE V3Performance

MONGOOSE V3Performance•lean queries

MONGOOSE V3Performance•lean queries Talks .findOne() .exec(function (err, doc) { // doc.save() })

MONGOOSE V3Performance•lean queries Talks .findOne() .setOptions({ lean: true }) .exec(function (err, doc) { // doc.save })

MONGOOSE V3Performance•lean queries Talks .findOne() .setOptions({ lean: true }) .exec(function (err, doc) { // doc.save -> undefined })

MONGOOSE V3Performance•lean queries•background indexes

MONGOOSE V3Performance•lean queries•background indexes•connection pool size?

MONGOOSE V3Performance•lean queries•background indexes•connection pool size?•memory usage?

MONGOOSE V3General Improvements

MONGOOSE V3General Improvements•Improved update command generation for arrays

MONGOOSE V3General Improvements•Improved update command generation for arrays var schema = new Schema({ tags: [], name: String })

MONGOOSE V3General Improvements•Improved update command generation for arrays var schema = new Schema({ tags: [], name: String }) var Talks = db.model(‘Talk’, schema)

MONGOOSE V3General Improvements•Improved update command generation for arrays var schema = new Schema({ tags: [], name: String }) var Talks = db.model(‘Talk’, schema) Talks.findById(id, function (err, talk) { talk.name = ‘peanut butter’ talk.tags.push(‘nerdcore’) talk.save(callback) })

MONGOOSE V3General Improvements•Improved update command generation for arrays var schema = new Schema({ tags: [], name: String }) var Talks = db.model(‘Talk’, schema) Talks.findById(id, function (err, talk) { talk.name = ‘peanut butter’ talk.tags.push(‘nerdcore’) talk.save(callback) // magic! })

MONGOOSE V3General Improvements•Improved update command generation for arrays Object.defineProperty(talk, ‘name’, { get: function () { return this.smth } , set: function (v){ this.smth = v } })

MONGOOSE V3General Improvements•Improved update command generation for arrays Object.defineProperty(talk, ‘name’, { get: function () { return this.smth } , set: function (v){ record(‘name’); this.smth = v } })

MONGOOSE V3General Improvements•Improved update command generation for arrays Object.defineProperty(talk, ‘name’, { get: function () { return this.smth } , set: function (v){ this._set = {} this._set[‘name’] = v this.smth = v } })

MONGOOSE V3General Improvements•Improved update command generation for arrays talk.save() -> var update = {}; update.$set = talk._set; Talks.update({ _id: talk._id }, update, callback)

MONGOOSE V3General Improvements•Improved update command generation for arrays talk.tags.push = function () { record(‘push’, arguments) }

MONGOOSE V3General Improvements•Improved update command generation for arrays talk.tags.push = function () { record(‘push’, arguments) } talk.save() -> var update = {}; update.$pushAll = { tags: args } Talk.update({_id:talk._id}, update, callback)

MONGOOSE V3General Improvements•Improved update command generation for arrays talk.tags.push(‘nerdcore’) talk.tags.remove(‘php’) talk.save(callback) // fail!

MONGOOSE V3General Improvements•Improved update command generation for arrays talk.tags.push(‘nerdcore’) talk.tags.remove(‘php’) talk.save(callback) // success!!

MONGOOSE V3General Improvements•Simplify schema declaration

MONGOOSE V3General Improvements•Simplify schema declaration var personSchema = new Schema({ name: String , val: Number , buffer: Buffer , array: Array , etc: ... })

MONGOOSE V3General Improvements•Simplify schema declaration var personSchema = new Schema({ name: ‘string’ , val: ‘number’ , buffer: ‘buffer’ , array: ‘array’ , etc: ... })

MONGOOSE V3General Improvements•Hardened schema ‘strict’ option var personSchema = new Schema({ name: ‘string’ , val: ‘number’ , buffer: ‘buffer’ , array: ‘array’ , etc: ... }, { strict: true })

MONGOOSE V3General Improvements•Hardened schema ‘strict’ option var personSchema = new Schema({ name: ‘string’ , val: ‘number’ , buffer: ‘buffer’ , array: ‘array’ , etc: ... }, { strict: ‘throw’ })

MONGOOSE V3General Improvements•Hardened schema ‘strict’ option new Person({ notExists: ‘3vil’ })

MONGOOSE V3General Improvements•Hardened schema ‘strict’ option new Person({ notExists: ‘3vil’ }) // throws “Field `notExists` is not in schema”

MONGOOSE V3General Improvements•Simplify schema declaration•Hardened schema ‘strict’ option (throws)•Removed MongooseNumber

MONGOOSE V3General Improvements•Simplify schema declaration•Hardened schema ‘strict’ option (throws)•Removed MongooseNumber•Add multiple validators

MONGOOSE V3General Improvements•Simplify schema declaration•Hardened schema ‘strict’ option (throws)•Removed MongooseNumber•Add multiple validators•toObject,toJSON options

MONGOOSE V3General Improvements•Simplify schema declaration•Hardened schema ‘strict’ option (throws)•Removed MongooseNumber•Add multiple validators•toObject,toJSON options•Specify a model in query.populate()

MONGOOSE V3General Improvements•Add document versioning * soon!

MONGOOSE V3General Improvements•Add document versioning•Recursive populate * soon!

MONGOOSE V3Documentation•mongoosejs.com•plugins.mongoosejs.com•blog.mongoosejs.com

MONGOOSE V3Support•LearnBoost

MONGOOSE V3Support•LearnBoost•10gen *

MONGOOSE V3Support•LearnBoost•10gen * driver too

MONGOOSE V3 ¿Preguntas?@aaronheckmann aaronheckmann@gmail.com@10gen https://github.com/aheckmann@learnboost https://github.com/LearnBoost/mongoose@mongodb

MONGOOSE V3 Thanks!@aaronheckmann aaronheckmann@gmail.com@10gen https://github.com/aheckmann@learnboost https://github.com/LearnBoost/mongoose@mongodb

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Mongoose v3 :: The Future is Bright

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