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
|
Once the datastore is running its important to be able to sort the
results along the lines of various criteria. Lets create a sample
datastore.
First clean up from any other tests.
>>> import os
>>> assert os.system('rm -rf /tmp/test_ds/') == 0
>>> from olpc.datastore import DataStore
>>> from olpc.datastore import backingstore, model
>>> ds = DataStore()
>>> ds.registerBackend(backingstore.FileBackingStore)
>>> assert ds.mount("/tmp/test_ds")
>>> a = ds.create({'title':"Content A", 'author':"Bob", 'year:int':"1999", 'month':"Jan"}, '')
>>> b = ds.create({'title':"Content B", 'author':"Alice", 'year:int':"2000", 'month':"Jan"}, '')
Find should return both
>>> def find2uids(results): return [i['uid'] for i in results[0]]
>>> ds.complete_indexing()
>>> assert set(find2uids(ds.find())) == set([a,b])
But what if we want the results ordered?
>>> assert find2uids(ds.find(order_by=['title'])) == [a, b]
>>> assert find2uids(ds.find(order_by=['author'])) == [b, a]
By more than one key?
>>> assert find2uids(ds.find(order_by=['month', 'year'])) == [a, b]
and if we want to reverse order it?
>>> assert find2uids(ds.find(order_by=['-title'])) == [b, a]
>>> assert find2uids(ds.find(order_by=['-author'])) == [a, b]
>>> ds.stop()
>>> del ds
>>> assert os.system('rm -rf /tmp/test_ds/') == 0
|
