-
Notifications
You must be signed in to change notification settings - Fork 6.4k
/
snippets.py
802 lines (617 loc) · 25.9 KB
/
snippets.py
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
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
# Copyright 2020 Google, Inc.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import datetime
from google.cloud import firestore
from google.cloud.firestore_v1.base_query import FieldFilter
async def quickstart_new_instance():
# [START firestore_setup_client_create_async]
from google.cloud import firestore
# The `project` parameter is optional and represents which project the client
# will act on behalf of. If not supplied, the client falls back to the default
# project inferred from the environment.
db = firestore.AsyncClient(project="my-project-id")
# [END firestore_setup_client_create_async]
return db
async def quickstart_add_data_one():
db = firestore.AsyncClient()
# [START firestore_setup_dataset_pt1_async]
doc_ref = db.collection("users").document("alovelace")
await doc_ref.set({"first": "Ada", "last": "Lovelace", "born": 1815})
# [END firestore_setup_dataset_pt1_async]
async def quickstart_add_data_two():
db = firestore.AsyncClient()
# [START firestore_setup_dataset_pt2_async]
doc_ref = db.collection("users").document("aturing")
await doc_ref.set(
{"first": "Alan", "middle": "Mathison", "last": "Turing", "born": 1912}
)
# [END firestore_setup_dataset_pt2_async]
async def quickstart_get_collection():
db = firestore.AsyncClient()
# [START firestore_quickstart_get_collection_async]
users_ref = db.collection("users")
docs = users_ref.stream()
async for doc in docs:
print(f"{doc.id} => {doc.to_dict()}")
# [END firestore_quickstart_get_collection_async]
async def add_from_dict():
db = firestore.AsyncClient()
# [START firestore_data_set_from_map_async]
data = {"name": "Los Angeles", "state": "CA", "country": "USA"}
# Add a new doc in collection 'cities' with ID 'LA'
await db.collection("cities").document("LA").set(data)
# [END firestore_data_set_from_map_async]
async def add_data_types():
db = firestore.AsyncClient()
# [START firestore_data_set_from_map_nested_async]
data = {
"stringExample": "Hello, World!",
"booleanExample": True,
"numberExample": 3.14159265,
"dateExample": datetime.datetime.now(tz=datetime.timezone.utc),
"arrayExample": [5, True, "hello"],
"nullExample": None,
"objectExample": {"a": 5, "b": True},
}
await db.collection("data").document("one").set(data)
# [END firestore_data_set_from_map_nested_async]
# [START firestore_data_custom_type_definition_async]
class City:
def __init__(self, name, state, country, capital=False, population=0, regions=[]):
self.name = name
self.state = state
self.country = country
self.capital = capital
self.population = population
self.regions = regions
@staticmethod
def from_dict(source):
# [START_EXCLUDE]
city = City(source["name"], source["state"], source["country"])
if "capital" in source:
city.capital = source["capital"]
if "population" in source:
city.population = source["population"]
if "regions" in source:
city.regions = source["regions"]
return city
# [END_EXCLUDE]
def to_dict(self):
# [START_EXCLUDE]
dest = {"name": self.name, "state": self.state, "country": self.country}
if self.capital:
dest["capital"] = self.capital
if self.population:
dest["population"] = self.population
if self.regions:
dest["regions"] = self.regions
return dest
# [END_EXCLUDE]
def __repr__(self):
return f"City(\
name={self.name}, \
country={self.country}, \
population={self.population}, \
capital={self.capital}, \
regions={self.regions}\
)"
# [END firestore_data_custom_type_definition_async]
async def add_example_data():
db = firestore.AsyncClient()
# [START firestore_data_get_dataset_async]
cities_ref = db.collection("cities")
await cities_ref.document("BJ").set(
City("Beijing", None, "China", True, 21500000, ["hebei"]).to_dict()
)
await cities_ref.document("SF").set(
City(
"San Francisco", "CA", "USA", False, 860000, ["west_coast", "norcal"]
).to_dict()
)
await cities_ref.document("LA").set(
City(
"Los Angeles", "CA", "USA", False, 3900000, ["west_coast", "socal"]
).to_dict()
)
await cities_ref.document("DC").set(
City("Washington D.C.", None, "USA", True, 680000, ["east_coast"]).to_dict()
)
await cities_ref.document("TOK").set(
City("Tokyo", None, "Japan", True, 9000000, ["kanto", "honshu"]).to_dict()
)
# [END firestore_data_get_dataset_async]
async def add_custom_class_with_id():
db = firestore.AsyncClient()
# [START firestore_data_set_from_custom_type_async]
city = City(name="Los Angeles", state="CA", country="USA")
await db.collection("cities").document("LA").set(city.to_dict())
# [END firestore_data_set_from_custom_type_async]
async def add_data_with_id():
db = firestore.AsyncClient()
data = {}
# [START firestore_data_set_id_specified_async]
await db.collection("cities").document("new-city-id").set(data)
# [END firestore_data_set_id_specified_async]
async def add_custom_class_generated_id():
db = firestore.AsyncClient()
# [START firestore_data_set_id_random_collection_async]
city = City(name="Tokyo", state=None, country="Japan")
await db.collection("cities").add(city.to_dict())
# [END firestore_data_set_id_random_collection_async]
async def add_new_doc():
db = firestore.AsyncClient()
# [START firestore_data_set_id_random_document_ref_async]
new_city_ref = db.collection("cities").document()
# later...
await new_city_ref.set(
{
# ...
}
)
# [END firestore_data_set_id_random_document_ref_async]
async def get_check_exists():
db = firestore.AsyncClient()
# [START firestore_data_get_as_map_async]
doc_ref = db.collection("cities").document("SF")
doc = await doc_ref.get()
if doc.exists:
print(f"Document data: {doc.to_dict()}")
else:
print("No such document!")
# [END firestore_data_get_as_map_async]
async def get_custom_class():
db = firestore.AsyncClient()
# [START firestore_data_get_as_custom_type_async]
doc_ref = db.collection("cities").document("BJ")
doc = await doc_ref.get()
city = City.from_dict(doc.to_dict())
print(city)
# [END firestore_data_get_as_custom_type_async]
async def get_simple_query():
db = firestore.AsyncClient()
# [START firestore_data_query_async]
# Note: Use of CollectionRef stream() is prefered to get()
docs = (
db.collection("cities")
.where(filter=FieldFilter("capital", "==", True))
.stream()
)
async for doc in docs:
print(f"{doc.id} => {doc.to_dict()}")
# [END firestore_data_query_async]
async def array_contains_filter():
db = firestore.AsyncClient()
# [START firestore_query_filter_array_contains_async]
cities_ref = db.collection("cities")
query = cities_ref.where(
filter=FieldFilter("regions", "array_contains", "west_coast")
)
# [END firestore_query_filter_array_contains_async]
docs = query.stream()
async for doc in docs:
print(f"{doc.id} => {doc.to_dict()}")
async def get_full_collection():
db = firestore.AsyncClient()
# [START firestore_data_get_all_documents_async]
docs = db.collection("cities").stream()
async for doc in docs:
print(f"{doc.id} => {doc.to_dict()}")
# [END firestore_data_get_all_documents_async]
async def structure_doc_ref():
db = firestore.AsyncClient()
# [START firestore_data_reference_document_async]
a_lovelace_ref = db.collection("users").document("alovelace")
# [END firestore_data_reference_document_async]
print(a_lovelace_ref)
async def structure_collection_ref():
db = firestore.AsyncClient()
# [START firestore_data_reference_collection_async]
users_ref = db.collection("users")
# [END firestore_data_reference_collection_async]
print(users_ref)
async def structure_doc_ref_alternate():
db = firestore.AsyncClient()
# [START firestore_data_reference_document_path_async]
a_lovelace_ref = db.document("users/alovelace")
# [END firestore_data_reference_document_path_async]
return a_lovelace_ref
async def structure_subcollection_ref():
db = firestore.AsyncClient()
# [START firestore_data_reference_subcollection_async]
room_a_ref = db.collection("rooms").document("roomA")
message_ref = room_a_ref.collection("messages").document("message1")
# [END firestore_data_reference_subcollection_async]
print(message_ref)
async def update_doc():
db = firestore.AsyncClient()
await db.collection("cities").document("DC").set(
City("Washington D.C.", None, "USA", True, 680000, ["east_coast"]).to_dict()
)
# [START firestore_data_set_field_async]
city_ref = db.collection("cities").document("DC")
# Set the capital field
await city_ref.update({"capital": True})
# [END firestore_data_set_field_async]
async def update_doc_array():
db = firestore.AsyncClient()
await db.collection("cities").document("DC").set(
City("Washington D.C.", None, "USA", True, 680000, ["east_coast"]).to_dict()
)
# [START firestore_data_set_array_operations_async]
city_ref = db.collection("cities").document("DC")
# Atomically add a new region to the 'regions' array field.
await city_ref.update({"regions": firestore.ArrayUnion(["greater_virginia"])})
# // Atomically remove a region from the 'regions' array field.
await city_ref.update({"regions": firestore.ArrayRemove(["east_coast"])})
# [END firestore_data_set_array_operations_async]
city = await city_ref.get()
print(f"Updated the regions field of the DC. {city.to_dict()}")
async def update_multiple():
db = firestore.AsyncClient()
await db.collection("cities").document("DC").set(
City("Washington D.C.", None, "USA", True, 680000, ["east_coast"]).to_dict()
)
# [START firestore_update_multiple_async]
doc_ref = db.collection("cities").document("DC")
await doc_ref.update({"name": "Washington D.C.", "country": "USA", "capital": True})
# [END firestore_update_multiple_async]
async def update_create_if_missing():
db = firestore.AsyncClient()
# [START firestore_data_set_doc_upsert_async]
city_ref = db.collection("cities").document("BJ")
await city_ref.set({"capital": True}, merge=True)
# [END firestore_data_set_doc_upsert_async]
async def update_nested():
db = firestore.AsyncClient()
# [START firestore_data_set_nested_fields_async]
# Create an initial document to update
frank_ref = db.collection("users").document("frank")
await frank_ref.set(
{
"name": "Frank",
"favorites": {"food": "Pizza", "color": "Blue", "subject": "Recess"},
"age": 12,
}
)
# Update age and favorite color
await frank_ref.update({"age": 13, "favorites.color": "Red"})
# [END firestore_data_set_nested_fields_async]
async def update_server_timestamp():
db = firestore.AsyncClient()
# [START firestore_data_set_server_timestamp_async]
city_ref = db.collection("objects").document("some-id")
await city_ref.update({"timestamp": firestore.SERVER_TIMESTAMP})
# [END firestore_data_set_server_timestamp_async]
async def update_data_transaction():
db = firestore.AsyncClient()
# [START firestore_transaction_document_update_async]
transaction = db.transaction()
city_ref = db.collection("cities").document("SF")
@firestore.async_transactional
async def update_in_transaction(transaction, city_ref):
snapshot = await city_ref.get(transaction=transaction)
transaction.update(city_ref, {"population": snapshot.get("population") + 1})
await update_in_transaction(transaction, city_ref)
# [END firestore_transaction_document_update_async]
async def update_data_transaction_result():
db = firestore.AsyncClient()
# [START firestore_transaction_document_update_conditional_async]
transaction = db.transaction()
city_ref = db.collection("cities").document("SF")
@firestore.async_transactional
async def update_in_transaction(transaction, city_ref):
snapshot = await city_ref.get(transaction=transaction)
new_population = snapshot.get("population") + 1
if new_population < 1000000:
transaction.update(city_ref, {"population": new_population})
return True
else:
return False
result = await update_in_transaction(transaction, city_ref)
if result:
print("Population updated")
else:
print("Sorry! Population is too big.")
# [END firestore_transaction_document_update_conditional_async]
async def update_data_batch():
db = firestore.AsyncClient()
# [START firestore_data_batch_writes_async]
batch = db.batch()
# Set the data for NYC
nyc_ref = db.collection("cities").document("NYC")
batch.set(nyc_ref, {"name": "New York City"})
# Update the population for SF
sf_ref = db.collection("cities").document("SF")
batch.update(sf_ref, {"population": 1000000})
# Delete DEN
den_ref = db.collection("cities").document("DEN")
batch.delete(den_ref)
# Commit the batch
await batch.commit()
# [END firestore_data_batch_writes_async]
async def compound_query_example():
db = firestore.AsyncClient()
# [START firestore_query_filter_eq_string_async]
# Create a reference to the cities collection
cities_ref = db.collection("cities")
# Create a query against the collection
query_ref = cities_ref.where(filter=FieldFilter("state", "==", "CA"))
# [END firestore_query_filter_eq_string_async]
return query_ref
async def compound_query_simple():
db = firestore.AsyncClient()
# [START firestore_query_filter_eq_boolean_async]
cities_ref = db.collection("cities")
query = cities_ref.where(filter=FieldFilter("capital", "==", True))
# [END firestore_query_filter_eq_boolean_async]
print(query)
async def compound_query_single_clause():
db = firestore.AsyncClient()
# [START firestore_query_filter_single_examples_async]
cities_ref = db.collection("cities")
cities_ref.where(filter=FieldFilter("state", "==", "CA"))
cities_ref.where(filter=FieldFilter("population", "<", 1000000))
cities_ref.where(filter=FieldFilter("name", ">=", "San Francisco"))
# [END firestore_query_filter_single_examples_async]
async def compound_query_valid_multi_clause():
db = firestore.AsyncClient()
# [START firestore_query_filter_compound_multi_eq_async]
cities_ref = db.collection("cities")
denver_query = cities_ref.where(filter=FieldFilter("state", "==", "CO")).where(
filter=FieldFilter("name", "==", "Denver")
)
large_us_cities_query = cities_ref.where(
filter=FieldFilter("state", "==", "CA")
).where(filter=FieldFilter("population", ">", 1000000))
# [END firestore_query_filter_compound_multi_eq_async]
print(denver_query)
print(large_us_cities_query)
async def compound_query_valid_single_field():
db = firestore.AsyncClient()
# [START firestore_query_filter_range_valid_async]
cities_ref = db.collection("cities")
cities_ref.where(filter=FieldFilter("state", ">=", "CA")).where(
filter=FieldFilter("state", "<=", "IN")
)
# [END firestore_query_filter_range_valid_async]
async def compound_query_invalid_multi_field():
db = firestore.AsyncClient()
# [START firestore_query_filter_range_invalid_async]
cities_ref = db.collection("cities")
cities_ref.where(filter=FieldFilter("state", ">=", "CA")).where(
filter=FieldFilter("population", ">=", 1000000)
)
# [END firestore_query_filter_range_invalid_async]
async def order_simple_limit():
db = firestore.AsyncClient()
# [START firestore_order_simple_limit_async]
db.collection("cities").order_by("name").limit(3).stream()
# [END firestore_order_simple_limit_async]
async def order_simple_limit_desc():
db = firestore.AsyncClient()
# [START firestore_query_order_desc_limit_async]
cities_ref = db.collection("cities")
query = cities_ref.order_by("name", direction=firestore.Query.DESCENDING).limit(3)
results = query.stream()
# [END firestore_query_order_desc_limit_async]
print(results)
async def order_multiple():
db = firestore.AsyncClient()
# [START firestore_query_order_multi_async]
cities_ref = db.collection("cities")
cities_ref.order_by("state").order_by(
"population", direction=firestore.Query.DESCENDING
)
# [END firestore_query_order_multi_async]
async def order_where_limit():
db = firestore.AsyncClient()
# [START firestore_query_order_limit_field_valid_async]
cities_ref = db.collection("cities")
query = (
cities_ref.where(filter=FieldFilter("population", ">", 2500000))
.order_by("population")
.limit(2)
)
results = query.stream()
# [END firestore_query_order_limit_field_valid_async]
print([d async for d in results])
async def order_limit_to_last():
db = firestore.AsyncClient()
# [START firestore_query_order_limit_async]
cities_ref = db.collection("cities")
query = cities_ref.order_by("name").limit_to_last(2)
results = await query.get()
# [END firestore_query_order_limit_async]
print(results)
async def order_where_valid():
db = firestore.AsyncClient()
# [START firestore_query_order_with_filter_async]
cities_ref = db.collection("cities")
query = cities_ref.where(filter=FieldFilter("population", ">", 2500000)).order_by(
"population"
)
results = query.stream()
# [END firestore_query_order_with_filter_async]
print([d async for d in results])
async def order_where_invalid():
db = firestore.AsyncClient()
# [START firestore_query_order_field_invalid_async]
cities_ref = db.collection("cities")
query = cities_ref.where(filter=FieldFilter("population", ">", 2500000)).order_by(
"country"
)
results = query.stream()
# [END firestore_query_order_field_invalid_async]
print(results)
async def cursor_simple_start_at():
db = firestore.AsyncClient()
# [START firestore_query_cursor_start_at_field_value_single_async]
cities_ref = db.collection("cities")
query_start_at = cities_ref.order_by("population").start_at({"population": 1000000})
# [END firestore_query_cursor_start_at_field_value_single_async]
return query_start_at
async def cursor_simple_end_at():
db = firestore.AsyncClient()
# [START firestore_query_cursor_end_at_field_value_single_async]
cities_ref = db.collection("cities")
query_end_at = cities_ref.order_by("population").end_at({"population": 1000000})
# [END firestore_query_cursor_end_at_field_value_single_async]
return query_end_at
async def snapshot_cursors():
db = firestore.AsyncClient()
# [START firestore_query_cursor_start_at_document_async]
doc_ref = db.collection("cities").document("SF")
snapshot = await doc_ref.get()
start_at_snapshot = (
db.collection("cities").order_by("population").start_at(snapshot)
)
# [END firestore_query_cursor_start_at_document_async]
results = start_at_snapshot.limit(10).stream()
async for doc in results:
print(f"{doc.id}")
return results
async def cursor_paginate():
db = firestore.AsyncClient()
# [START firestore_query_cursor_pagination_async]
cities_ref = db.collection("cities")
first_query = cities_ref.order_by("population").limit(3)
# Get the last document from the results
docs = [d async for d in first_query.stream()]
last_doc = list(docs)[-1]
# Construct a new query starting at this document
# Note: this will not have the desired effect if
# multiple cities have the exact same population value
last_pop = last_doc.to_dict()["population"]
next_query = (
cities_ref.order_by("population").start_after({"population": last_pop}).limit(3)
)
# Use the query for pagination
# ...
# [END firestore_query_cursor_pagination_async]
return next_query
async def cursor_multiple_conditions():
db = firestore.AsyncClient()
# [START firestore_query_cursor_start_at_field_value_multi_async]
start_at_name = (
db.collection("cities")
.order_by("name")
.order_by("state")
.start_at({"name": "Springfield"})
)
start_at_name_and_state = (
db.collection("cities")
.order_by("name")
.order_by("state")
.start_at({"name": "Springfield", "state": "Missouri"})
)
# [END firestore_query_cursor_start_at_field_value_multi_async]
return start_at_name, start_at_name_and_state
async def delete_single_doc():
db = firestore.AsyncClient()
# [START firestore_data_delete_doc_async]
await db.collection("cities").document("DC").delete()
# [END firestore_data_delete_doc_async]
async def delete_field():
db = firestore.AsyncClient()
# [START firestore_data_delete_field_async]
city_ref = db.collection("cities").document("BJ")
await city_ref.update({"capital": firestore.DELETE_FIELD})
# [END firestore_data_delete_field_async]
async def delete_full_collection():
db = firestore.AsyncClient()
# [START firestore_data_delete_collection_async]
async def delete_collection(coll_ref, batch_size):
docs = coll_ref.limit(batch_size).stream()
deleted = 0
async for doc in docs:
print(f"Deleting doc {doc.id} => {doc.to_dict()}")
await doc.reference.delete()
deleted = deleted + 1
if deleted >= batch_size:
return delete_collection(coll_ref, batch_size)
# [END firestore_data_delete_collection_async]
await delete_collection(db.collection("cities"), 10)
await delete_collection(db.collection("data"), 10)
await delete_collection(db.collection("objects"), 10)
await delete_collection(db.collection("users"), 10)
async def collection_group_query(db):
# [START firestore_query_collection_group_dataset_async]
cities = db.collection("cities")
sf_landmarks = cities.document("SF").collection("landmarks")
await sf_landmarks.document().set({"name": "Golden Gate Bridge", "type": "bridge"})
await sf_landmarks.document().set({"name": "Legion of Honor", "type": "museum"})
la_landmarks = cities.document("LA").collection("landmarks")
await la_landmarks.document().set({"name": "Griffith Park", "type": "park"})
await la_landmarks.document().set({"name": "The Getty", "type": "museum"})
dc_landmarks = cities.document("DC").collection("landmarks")
await dc_landmarks.document().set({"name": "Lincoln Memorial", "type": "memorial"})
await dc_landmarks.document().set(
{"name": "National Air and Space Museum", "type": "museum"}
)
tok_landmarks = cities.document("TOK").collection("landmarks")
await tok_landmarks.document().set({"name": "Ueno Park", "type": "park"})
await tok_landmarks.document().set(
{"name": "National Museum of Nature and Science", "type": "museum"}
)
bj_landmarks = cities.document("BJ").collection("landmarks")
await bj_landmarks.document().set({"name": "Jingshan Park", "type": "park"})
await bj_landmarks.document().set(
{"name": "Beijing Ancient Observatory", "type": "museum"}
)
# [END firestore_query_collection_group_dataset_async]
# [START firestore_query_collection_group_filter_eq_async]
museums = db.collection_group("landmarks").where(
filter=FieldFilter("type", "==", "museum")
)
docs = museums.stream()
async for doc in docs:
print(f"{doc.id} => {doc.to_dict()}")
# [END firestore_query_collection_group_filter_eq_async]
return docs
async def array_contains_any_queries(db):
# [START firestore_query_filter_array_contains_any_async]
cities_ref = db.collection("cities")
query = cities_ref.where(
filter=FieldFilter(
"regions", "array_contains_any", ["west_coast", "east_coast"]
)
)
return query
# [END firestore_query_filter_array_contains_any_async]
async def in_query_without_array(db):
# [START firestore_query_filter_in_async]
cities_ref = db.collection("cities")
query = cities_ref.where(filter=FieldFilter("country", "in", ["USA", "Japan"]))
return query
# [END firestore_query_filter_in_async]
async def in_query_with_array(db):
# [START firestore_query_filter_in_with_array_async]
cities_ref = db.collection("cities")
query = cities_ref.where(
filter=FieldFilter("regions", "in", [["west_coast"], ["east_coast"]])
)
return query
# [END firestore_query_filter_in_with_array_async]
async def update_document_increment(db):
# [START firestore_data_set_numeric_increment_async]
washington_ref = db.collection("cities").document("DC")
washington_ref.update({"population": firestore.Increment(50)})
# [END firestore_data_set_numeric_increment_async]
async def list_document_subcollections():
db = firestore.AsyncClient()
# [START firestore_data_get_sub_collections_async]
collections = db.collection("cities").document("SF").collections()
async for collection in collections:
async for doc in collection.stream():
print(f"{doc.id} => {doc.to_dict()}")
# [END firestore_data_get_sub_collections_async]