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
|
# 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 mango
import copy
import unittest
DOCS = [
{"_id": "1", "name": "Jimi", "age": 10, "cars": 1},
{"_id": "2", "name": "Eddie", "age": 20, "cars": 1},
{"_id": "3", "name": "Jane", "age": 30, "cars": 2},
{"_id": "4", "name": "Mary", "age": 40, "cars": 2},
{"_id": "5", "name": "Sam", "age": 50, "cars": 3},
]
class JSONIndexSortOptimisations(mango.DbPerClass):
def setUp(self):
self.db.recreate()
self.db.save_docs(copy.deepcopy(DOCS))
def test_works_for_basic_case(self):
self.db.create_index(["cars", "age"], name="cars-age")
selector = {"cars": "2", "age": {"$gt": 10}}
explain = self.db.find(selector, sort=["age"], explain=True)
self.assertEqual(explain["index"]["name"], "cars-age")
self.assertEqual(explain["mrargs"]["direction"], "fwd")
def test_works_for_all_fields_specified(self):
self.db.create_index(["cars", "age"], name="cars-age")
selector = {"cars": "2", "age": {"$gt": 10}}
explain = self.db.find(selector, sort=["cars", "age"], explain=True)
self.assertEqual(explain["index"]["name"], "cars-age")
def test_works_for_no_sort_fields_specified(self):
self.db.create_index(["cars", "age"], name="cars-age")
selector = {"cars": {"$gt": 10}, "age": {"$gt": 10}}
explain = self.db.find(selector, explain=True)
self.assertEqual(explain["index"]["name"], "cars-age")
def test_works_for_opp_dir_sort(self):
self.db.create_index(["cars", "age"], name="cars-age")
selector = {"cars": "2", "age": {"$gt": 10}}
explain = self.db.find(selector, sort=[{"age": "desc"}], explain=True)
self.assertEqual(explain["index"]["name"], "cars-age")
self.assertEqual(explain["mrargs"]["direction"], "rev")
def test_not_work_for_non_constant_field(self):
self.db.create_index(["cars", "age"], name="cars-age")
selector = {"cars": {"$gt": 10}, "age": {"$gt": 10}}
try:
self.db.find(selector, explain=True, sort=["age"])
raise Exception("Should not get here")
except Exception as e:
resp = e.response.json()
self.assertEqual(resp["error"], "no_usable_index")
def test_three_index_one(self):
self.db.create_index(["cars", "age", "name"], name="cars-age-name")
selector = {"cars": "2", "age": 10, "name": {"$gt": "AA"}}
explain = self.db.find(selector, sort=["name"], explain=True)
self.assertEqual(explain["index"]["name"], "cars-age-name")
def test_three_index_two(self):
self.db.create_index(["cars", "age", "name"], name="cars-age-name")
selector = {"cars": "2", "name": "Eddie", "age": {"$gt": 10}}
explain = self.db.find(selector, sort=["age"], explain=True)
self.assertEqual(explain["index"]["name"], "cars-age-name")
def test_three_index_fails(self):
self.db.create_index(["cars", "age", "name"], name="cars-age-name")
selector = {"name": "Eddie", "age": {"$gt": 1}, "cars": {"$gt": "1"}}
try:
self.db.find(selector, explain=True, sort=["name"])
raise Exception("Should not get here")
except Exception as e:
resp = e.response.json()
self.assertEqual(resp["error"], "no_usable_index")
def test_empty_sort(self):
self.db.create_index(["cars", "age", "name"], name="cars-age-name")
selector = {"name": {"$gt": "Eddie"}, "age": 10, "cars": {"$gt": "1"}}
explain = self.db.find(selector, explain=True)
self.assertEqual(explain["index"]["name"], "cars-age-name")
def test_in_between(self):
self.db.create_index(["cars", "age", "name"], name="cars-age-name")
selector = {"name": "Eddie", "age": 10, "cars": {"$gt": "1"}}
explain = self.db.find(selector, explain=True)
self.assertEqual(explain["index"]["name"], "cars-age-name")
try:
self.db.find(selector, sort=["cars", "name"], explain=True)
raise Exception("Should not get here")
except Exception as e:
resp = e.response.json()
self.assertEqual(resp["error"], "no_usable_index")
def test_ignore_after_set_sort_value(self):
self.db.create_index(["cars", "age", "name"], name="cars-age-name")
selector = {"age": {"$gt": 10}, "cars": 2, "name": {"$gt": "A"}}
explain = self.db.find(selector, sort=["age"], explain=True)
self.assertEqual(explain["index"]["name"], "cars-age-name")
def test_not_use_index_if_other_fields_in_sort(self):
self.db.create_index(["cars", "age"], name="cars-age")
selector = {"age": 10, "cars": {"$gt": "1"}}
try:
self.db.find(selector, sort=["cars", "name"], explain=True)
raise Exception("Should not get here")
except Exception as e:
resp = e.response.json()
self.assertEqual(resp["error"], "no_usable_index")
|
