Source Code for Module emma.database

 1  """ 
 2  DataBase interface 
 3   
 4  Using mongoDB 
 5   
 6  @copyright: (c) 2011 hackmeeting U{http://sindominio.net/hackmeeting} 
 7  @author: Ruben Pollan 
 8  @organization: hackmeeting U{http://sindominio.net/hackmeeting} 
 9  @contact: meskio@sindominio.net 
10  @license: 
11    This program is free software; you can redistribute it and/or 
12    modify it under the terms of the Do What The Fuck You Want To 
13    Public License, Version 2, as published by Sam Hocevar. See 
14    U{http://sam.zoy.org/projects/COPYING.WTFPL} for more details. 
15  """ 
16   
17  import pymongo 
18  import logging 
19   
20   
21 -class DB: 
22      """ 
23      Database class 
24   
25      It is a singleton class, so any instantion of it will get the global 
26      database. 
27      """ 
28   
29      __ = {} 
30   
31 -    def __init__(self): 
32          pass 
33   
34 -    def connect(self, host, port, name): 
35          """ 
36          Connect to a mongoDB database 
37   
38          That method must be call before any use of the database 
39          @type name: string 
40          @param name: database name 
41          """ 
42          logging.info(_("[core] connect to database")) 
43          self.__['conn'] = pymongo.Connection(host, port) 
44          self.__['db'] = self.__['conn'][name] 
45   
46 -    def collection(self, coll): 
47          """ 
48          Get a database collection 
49   
50          @type coll: string 
51          @param coll: coll name 
52          @returns: mongoDb collection 
53          """ 
54          return self.__['db'][coll] 
55   
56 -    def core(self): 
57          """ 
58          Get the core collection 
59   
60          The collection use by the core of emma 
61          @returns: mongoDb collection 
62          """ 
63          return self.collection('core') 
64