Package etl :: Package connector :: Module file_connector
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Source Code for Module etl.connector.file_connector

 1  # -*- encoding: utf-8 -*- 
 2  ############################################################################## 
 3  # 
 4  #    ETL system- Extract Transfer Load system 
 5  #    Copyright (C) 2004-2009 Tiny SPRL (<http://tiny.be>). All Rights Reserved 
 6  #    $Id$ 
 7  # 
 8  #    This program is free software: you can redistribute it and/or modify 
 9  #    it under the terms of the GNU General Public License as published by 
10  #    the Free Software Foundation, either version 3 of the License, or 
11  #    (at your option) any later version. 
12  # 
13  #    This program is distributed in the hope that it will be useful, 
14  #    but WITHOUT ANY WARRANTY; without even the implied warranty of 
15  #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
16  #    GNU General Public License for more details. 
17  # 
18  #    You should have received a copy of the GNU General Public License 
19  #    along with this program.  If not, see <http://www.gnu.org/licenses/>. 
20  # 
21  ############################################################################## 
22  """ 
23   To provide connectivity with file. 
24   
25   Copyright (C) 2004-2009 Tiny SPRL (<http://tiny.be>).  
26   GNU General Public License. 
27  """ 
28   
29  from etl.connector import connector 
30   
31 -class file_connector(connector):
32 """ 33 This is an ETL connector that is used to provide connectivity with file. 34 """
35 - def __init__(self, uri, bufsize=-1, encoding='utf-8', name='file_connector'):
36 """ 37 Required Parameters 38 uri : Path of file. 39 40 Extra Parameters 41 bufsize : Buffer size for reading data. 42 encoding : Encoding format. 43 name : Name of connector. 44 """ 45 super(file_connector, self).__init__(name) 46 self._type = 'connector.file_connector' 47 self.bufsize = bufsize 48 self.encoding = encoding 49 self.uri = uri
50
51 - def open(self, mode='r'):
52 """ 53 Opens file connections. 54 """ 55 super(file_connector, self).open() 56 return file(self.uri, mode)
57 58
59 - def close(self, connector):
60 """ 61 Closes file connections. 62 """ 63 super(file_connector, self).close(connector) 64 return connector.close()
65
66 - def __copy__(self):
67 """ 68 Overrides copy method. 69 """ 70 res = file_connector(self.uri, self.bufsize, self.encoding, self.name) 71 return res
72
73 -def test():
74 file_conn = file_connector('test.txt') 75 con = file_conn.open() 76 file_conn.close(con)
77 78 if __name__ == '__main__': 79 test() 80