-
-
Notifications
You must be signed in to change notification settings - Fork 3.8k
/
array.js
677 lines (585 loc) · 16.9 KB
/
array.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
/*!
* Module dependencies.
*/
var EmbeddedDocument = require('./embedded');
var Document = require('../document');
var ObjectId = require('./objectid');
var utils = require('../utils');
var isMongooseObject = utils.isMongooseObject;
/**
* Mongoose Array constructor.
*
* ####NOTE:
*
* _Values always have to be passed to the constructor to initialize, otherwise `MongooseArray#push` will mark the array as modified._
*
* @param {Array} values
* @param {String} path
* @param {Document} doc parent document
* @api private
* @inherits Array
* @see http://bit.ly/f6CnZU
*/
function MongooseArray (values, path, doc) {
var arr = [];
arr.push.apply(arr, values);
arr.__proto__ = MongooseArray.prototype;
arr._atomics = {};
arr.validators = [];
arr._path = path;
if (doc) {
arr._parent = doc;
arr._schema = doc.schema.path(path);
}
return arr;
};
/*!
* Inherit from Array
*/
MongooseArray.prototype = new Array;
/**
* Stores a queue of atomic operations to perform
*
* @property _atomics
* @api private
*/
MongooseArray.prototype._atomics;
/**
* Parent owner document
*
* @property _parent
* @api private
*/
MongooseArray.prototype._parent;
/**
* Casts a member based on this arrays schema.
*
* @param {any} value
* @return value the casted value
* @api private
*/
MongooseArray.prototype._cast = function (value) {
var owner = this._owner;
var populated = false;
var Model;
if (this._parent) {
// if a populated array, we must cast to the same model
// instance as specified in the original query.
if (!owner) {
owner = this._owner = this._parent.ownerDocument
? this._parent.ownerDocument()
: this._parent;
}
populated = owner.populated(this._path, true);
}
if (populated && null != value) {
// cast to the populated Models schema
var Model = populated.options.model;
// only objects are permitted so we can safely assume that
// non-objects are to be interpreted as _id
if (Buffer.isBuffer(value) ||
value instanceof ObjectId || !utils.isObject(value)) {
value = { _id: value };
}
value = new Model(value);
return this._schema.caster.cast(value, this._parent, true)
}
return this._schema.caster.cast(value, this._parent, false)
}
/**
* Marks this array as modified.
*
* If it bubbles up from an embedded document change, then it takes the following arguments (otherwise, takes 0 arguments)
*
* @param {EmbeddedDocument} embeddedDoc the embedded doc that invoked this method on the Array
* @param {String} embeddedPath the path which changed in the embeddedDoc
* @api private
*/
MongooseArray.prototype._markModified = function (elem, embeddedPath) {
var parent = this._parent
, dirtyPath;
if (parent) {
dirtyPath = this._path;
if (arguments.length) {
if (null != embeddedPath) {
// an embedded doc bubbled up the change
dirtyPath = dirtyPath + '.' + this.indexOf(elem) + '.' + embeddedPath;
} else {
// directly set an index
dirtyPath = dirtyPath + '.' + elem;
}
}
parent.markModified(dirtyPath);
}
return this;
};
/**
* Register an atomic operation with the parent.
*
* @param {Array} op operation
* @param {any} val
* @api private
*/
MongooseArray.prototype._registerAtomic = function (op, val) {
if ('$set' == op) {
// $set takes precedence over all other ops.
// mark entire array modified.
this._atomics = { $set: val };
return this;
}
var atomics = this._atomics;
// reset pop/shift after save
if ('$pop' == op && !('$pop' in atomics)) {
var self = this;
this._parent.once('save', function () {
self._popped = self._shifted = null;
});
}
// check for impossible $atomic combos (Mongo denies more than one
// $atomic op on a single path
if (this._atomics.$set ||
Object.keys(atomics).length && !(op in atomics)) {
// a different op was previously registered.
// save the entire thing.
this._atomics = { $set: this };
return this;
}
if (op === '$pullAll' || op === '$pushAll' || op === '$addToSet') {
atomics[op] || (atomics[op] = []);
atomics[op] = atomics[op].concat(val);
} else if (op === '$pullDocs') {
var pullOp = atomics['$pull'] || (atomics['$pull'] = {})
, selector = pullOp['_id'] || (pullOp['_id'] = {'$in' : [] });
selector['$in'] = selector['$in'].concat(val);
} else {
atomics[op] = val;
}
return this;
};
/**
* Depopulates stored atomic operation values as necessary for direct insertion to MongoDB.
*
* If no atomics exist, we return all array values after conversion.
*
* @return {Array}
* @method $__getAtomics
* @memberOf MongooseArray
* @api private
*/
MongooseArray.prototype.$__getAtomics = function () {
var ret = [];
var keys = Object.keys(this._atomics);
var i = keys.length;
if (0 === i) {
ret[0] = ['$set', this.toObject({ depopulate: 1 })];
return ret;
}
while (i--) {
var op = keys[i];
var val = this._atomics[op];
// the atomic values which are arrays are not MongooseArrays. we
// need to convert their elements as if they were MongooseArrays
// to handle populated arrays versus DocumentArrays properly.
if (isMongooseObject(val)) {
val = val.toObject({ depopulate: 1 });
} else if (Array.isArray(val)) {
val = this.toObject.call(val, { depopulate: 1 });
} else if (val.valueOf) {
val = val.valueOf();
}
if ('$addToSet' == op) {
val = { $each: val }
}
ret.push([op, val]);
}
return ret;
}
/**
* Returns the number of pending atomic operations to send to the db for this array.
*
* @api private
* @return {Number}
*/
MongooseArray.prototype.hasAtomics = function hasAtomics () {
if (!(this._atomics && 'Object' === this._atomics.constructor.name)) {
return 0;
}
return Object.keys(this._atomics).length;
}
/**
* Wraps [`Array#push`](https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/push) with proper change tracking.
*
* @param {Object} [args...]
* @api public
*/
MongooseArray.prototype.push = function () {
var values = [].map.call(arguments, this._cast, this)
, ret = [].push.apply(this, values);
// $pushAll might be fibbed (could be $push). But it makes it easier to
// handle what could have been $push, $pushAll combos
this._registerAtomic('$pushAll', values);
this._markModified();
return ret;
};
/**
* Pushes items to the array non-atomically.
*
* ####NOTE:
*
* _marks the entire array as modified, which if saved, will store it as a `$set` operation, potentially overwritting any changes that happen between when you retrieved the object and when you save it._
*
* @param {any} [args...]
* @api public
*/
MongooseArray.prototype.nonAtomicPush = function () {
var values = [].map.call(arguments, this._cast, this)
, ret = [].push.apply(this, values);
this._registerAtomic('$set', this);
this._markModified();
return ret;
};
/**
* Pops the array atomically at most one time per document `save()`.
*
* #### NOTE:
*
* _Calling this mulitple times on an array before saving sends the same command as calling it once._
* _This update is implemented using the MongoDB [$pop](http://www.mongodb.org/display/DOCS/Updating/#Updating-%24pop) method which enforces this restriction._
*
* doc.array = [1,2,3];
*
* var popped = doc.array.$pop();
* console.log(popped); // 3
* console.log(doc.array); // [1,2]
*
* // no affect
* popped = doc.array.$pop();
* console.log(doc.array); // [1,2]
*
* doc.save(function (err) {
* if (err) return handleError(err);
*
* // we saved, now $pop works again
* popped = doc.array.$pop();
* console.log(popped); // 2
* console.log(doc.array); // [1]
* })
*
* @api public
* @method $pop
* @memberOf MongooseArray
* @see mongodb http://www.mongodb.org/display/DOCS/Updating/#Updating-%24pop
*/
MongooseArray.prototype.$pop = function () {
this._registerAtomic('$pop', 1);
this._markModified();
// only allow popping once
if (this._popped) return;
this._popped = true;
return [].pop.call(this);
};
/**
* Wraps [`Array#pop`](https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/pop) with proper change tracking.
*
* ####Note:
*
* _marks the entire array as modified which will pass the entire thing to $set potentially overwritting any changes that happen between when you retrieved the object and when you save it._
*
* @see MongooseArray#$pop #types_array_MongooseArray-%24pop
* @api public
*/
MongooseArray.prototype.pop = function () {
var ret = [].pop.call(this);
this._registerAtomic('$set', this);
this._markModified();
return ret;
};
/**
* Atomically shifts the array at most one time per document `save()`.
*
* ####NOTE:
*
* _Calling this mulitple times on an array before saving sends the same command as calling it once._
* _This update is implemented using the MongoDB [$pop](http://www.mongodb.org/display/DOCS/Updating/#Updating-%24pop) method which enforces this restriction._
*
* doc.array = [1,2,3];
*
* var shifted = doc.array.$shift();
* console.log(shifted); // 1
* console.log(doc.array); // [2,3]
*
* // no affect
* shifted = doc.array.$shift();
* console.log(doc.array); // [2,3]
*
* doc.save(function (err) {
* if (err) return handleError(err);
*
* // we saved, now $shift works again
* shifted = doc.array.$shift();
* console.log(shifted ); // 2
* console.log(doc.array); // [3]
* })
*
* @api public
* @memberOf MongooseArray
* @method $shift
* @see mongodb http://www.mongodb.org/display/DOCS/Updating/#Updating-%24pop
*/
MongooseArray.prototype.$shift = function $shift () {
this._registerAtomic('$pop', -1);
this._markModified();
// only allow shifting once
if (this._shifted) return;
this._shifted = true;
return [].shift.call(this);
};
/**
* Wraps [`Array#shift`](https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/unshift) with proper change tracking.
*
* ####Example:
*
* doc.array = [2,3];
* var res = doc.array.shift();
* console.log(res) // 2
* console.log(doc.array) // [3]
*
* ####Note:
*
* _marks the entire array as modified, which if saved, will store it as a `$set` operation, potentially overwritting any changes that happen between when you retrieved the object and when you save it._
*
* @api public
*/
MongooseArray.prototype.shift = function () {
var ret = [].shift.call(this);
this._registerAtomic('$set', this);
this._markModified();
return ret;
};
/**
* Pulls items from the array atomically.
*
* ####Examples:
*
* doc.array.pull(ObjectId)
* doc.array.pull({ _id: 'someId' })
* doc.array.pull(36)
* doc.array.pull('tag 1', 'tag 2')
*
* To remove a document from a subdocument array we may pass an object with a matching `_id`.
*
* doc.subdocs.push({ _id: 4815162342 })
* doc.subdocs.pull({ _id: 4815162342 }) // removed
*
* Or we may passing the _id directly and let mongoose take care of it.
*
* doc.subdocs.push({ _id: 4815162342 })
* doc.subdocs.pull(4815162342); // works
*
* @param {any} [args...]
* @see mongodb http://www.mongodb.org/display/DOCS/Updating/#Updating-%24pull
* @api public
*/
MongooseArray.prototype.pull = function () {
var values = [].map.call(arguments, this._cast, this)
, cur = this._parent.get(this._path)
, i = cur.length
, mem;
while (i--) {
mem = cur[i];
if (mem instanceof EmbeddedDocument) {
if (values.some(function (v) { return v.equals(mem); } )) {
[].splice.call(cur, i, 1);
}
} else if (~cur.indexOf.call(values, mem)) {
[].splice.call(cur, i, 1);
}
}
if (values[0] instanceof EmbeddedDocument) {
this._registerAtomic('$pullDocs', values.map( function (v) { return v._id; } ));
} else {
this._registerAtomic('$pullAll', values);
}
this._markModified();
return this;
};
/**
* Alias of [pull](#types_array_MongooseArray-pull)
*
* @see MongooseArray#pull #types_array_MongooseArray-pull
* @see mongodb http://www.mongodb.org/display/DOCS/Updating/#Updating-%24pull
* @api public
* @memberOf MongooseArray
* @method remove
*/
MongooseArray.prototype.remove = MongooseArray.prototype.pull;
/**
* Wraps [`Array#splice`](https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/splice) with proper change tracking and casting.
*
* ####Note:
*
* _marks the entire array as modified, which if saved, will store it as a `$set` operation, potentially overwritting any changes that happen between when you retrieved the object and when you save it._
*
* @api public
*/
MongooseArray.prototype.splice = function splice () {
var ret, vals, i;
if (arguments.length) {
vals = [];
for (i = 0; i < arguments.length; ++i) {
vals[i] = i < 2
? arguments[i]
: this._cast(arguments[i]);
}
ret = [].splice.apply(this, vals);
this._registerAtomic('$set', this);
this._markModified();
}
return ret;
}
/**
* Wraps [`Array#unshift`](https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/unshift) with proper change tracking.
*
* ####Note:
*
* _marks the entire array as modified, which if saved, will store it as a `$set` operation, potentially overwritting any changes that happen between when you retrieved the object and when you save it._
*
* @api public
*/
MongooseArray.prototype.unshift = function () {
var values = [].map.call(arguments, this._cast, this);
[].unshift.apply(this, values);
this._registerAtomic('$set', this);
this._markModified();
return this.length;
};
/**
* Wraps [`Array#sort`](https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/sort) with proper change tracking.
*
* ####NOTE:
*
* _marks the entire array as modified, which if saved, will store it as a `$set` operation, potentially overwritting any changes that happen between when you retrieved the object and when you save it._
*
* @api public
*/
MongooseArray.prototype.sort = function () {
var ret = [].sort.apply(this, arguments);
this._registerAtomic('$set', this);
this._markModified();
return ret;
}
/**
* Adds values to the array if not already present.
*
* ####Example:
*
* console.log(doc.array) // [2,3,4]
* var added = doc.array.addToSet(4,5);
* console.log(doc.array) // [2,3,4,5]
* console.log(added) // [5]
*
* @param {any} [args...]
* @return {Array} the values that were added
* @api public
*/
MongooseArray.prototype.addToSet = function addToSet () {
var values = [].map.call(arguments, this._cast, this)
, added = []
, type = values[0] instanceof EmbeddedDocument ? 'doc' :
values[0] instanceof Date ? 'date' :
'';
values.forEach(function (v) {
var found;
switch (type) {
case 'doc':
found = this.some(function(doc){ return doc.equals(v) });
break;
case 'date':
var val = +v;
found = this.some(function(d){ return +d === val });
break;
default:
found = ~this.indexOf(v);
}
if (!found) {
[].push.call(this, v);
this._registerAtomic('$addToSet', v);
this._markModified();
[].push.call(added, v);
}
}, this);
return added;
};
/**
* Sets the casted `val` at index `i` and marks the array modified.
*
* ####Example:
*
* // given documents based on the following
* var Doc = mongoose.model('Doc', new Schema({ array: [Number] }));
*
* var doc = new Doc({ array: [2,3,4] })
*
* console.log(doc.array) // [2,3,4]
*
* doc.array.set(1,"5");
* console.log(doc.array); // [2,5,4] // properly cast to number
* doc.save() // the change is saved
*
* // VS not using array#set
* doc.array[1] = "5";
* console.log(doc.array); // [2,"5",4] // no casting
* doc.save() // change is not saved
*
* @return {Array} this
* @api public
*/
MongooseArray.prototype.set = function set (i, val) {
this[i] = this._cast(val);
this._markModified(i);
return this;
}
/**
* Returns a native js Array.
*
* @param {Object} options
* @return {Array}
* @api public
*/
MongooseArray.prototype.toObject = function (options) {
if (options && options.depopulate) {
return this.map(function (doc) {
return doc instanceof Document
? doc.toObject(options)
: doc
});
}
return this.slice();
}
/**
* Helper for console.log
*
* @api public
*/
MongooseArray.prototype.inspect = function () {
return JSON.stringify(this);
};
/**
* Return the index of `obj` or `-1` if not found.
*
* @param {Object} obj the item to look for
* @return {Number}
* @api public
*/
MongooseArray.prototype.indexOf = function indexOf (obj) {
if (obj instanceof ObjectId) obj = obj.toString();
for (var i = 0, len = this.length; i < len; ++i) {
if (obj == this[i])
return i;
}
return -1;
};
/*!
* Module exports.
*/
module.exports = exports = MongooseArray;