-
Notifications
You must be signed in to change notification settings - Fork 2
/
datastore.py
54 lines (45 loc) · 1.3 KB
/
datastore.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
import sqlite3
import datetime
class DataStore:
def __init__(self):
self.conn = None
def read(self, variable, date):
"""
Date format: YYYY-MM-DD.
"""
if self.is_connected():
c = self.conn.cursor()
q = 'SELECT * FROM curve WHERE name="' + variable.name + '" AND time LIKE "' + date + '%" ORDER BY time ASC'
c.execute(q)
return c.fetchall()
else:
print 'Not connected'
return None
def write(self, variable):
if self.conn != None:
c = self.conn.cursor()
t = (variable.name, str(variable.value), str(datetime.datetime.now()))
# print str(t)
c.execute('INSERT INTO curve(name, value, time) VALUES ' + str(t))
self.conn.commit()
else:
print 'Not connected'
def connect(self, connstr):
if not self.is_connected():
self.conn = sqlite3.connect(connstr)
print 'Connection opened'
else: print 'Already connected'
def disconnect(self):
self.conn.close()
self.conn = None
print 'Connection closed'
def is_connected(self):
return self.conn != None
def get_var_names(self):
if self.is_connected():
c = self.conn.cursor()
q = 'SELECT DISTINCT NAME FROM curve'
c.execute(q)
rows = c.fetchall()
for name, in rows:
yield name