1 # DeGAL - A pretty simple web image gallery

     2 # Copyright (C) 2007 Tero Marttila

     3 # http://marttila.de/~terom/degal/

     4 #

     5 # This program is free software; you can redistribute it and/or modify

     6 # it under the terms of the GNU General Public License as published by

     7 # the Free Software Foundation; either version 2 of the License, or

     8 # (at your option) any later version.

     9 #

    10 # This program is distributed in the hope that it will be useful,

    11 # but WITHOUT ANY WARRANTY; without even the implied warranty of

    12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    13 # GNU General Public License for more details.

    14 #

    15 # You should have received a copy of the GNU General Public License

    16 # along with this program; if not, write to the

    17 # Free Software Foundation, Inc.,

    18 # 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

    19 #

    20 

    21 import sqlite3

    22 

    23 conn = sqlite3.connect("db/degal.db")

    24 

    25 def execute (expr, *args) :

    26     c = conn.cursor()

    27     c.execute(expr, args)

    28 

    29     return c

    30 

    31 def execute_many (expr, iter) :

    32     c = conn.cursor()

    33     c.executemany(expr, iter)

    34 

    35     return c

    36 

    37 def insert (expr, *args) :

    38     return execute_commit(expr, *args).lastrowid

    39 

    40 def insert_many (cb, expr, iter) :

    41     """

    42         Perform an executemany with the given iterator (which must yield (cb_val, args) tuples), calling the given callback with the args (cb_val, row_id)

    43     """

    44 

    45     c = conn.cursor()

    46 

    47     c.executemany(expr, _lastrowid_adapter(c, iter, cb))

    48 

    49     return commit(c)

    50 

    51 def _lastrowid_adapter (c, iter, cb) :

    52     for val, args in iter :

    53         yield args

    54 

    55         cb(val, c.lastrowid)

    56 

    57 def commit (cursor) :

    58     try :

    59         cursor.execute("COMMIT")

    60     except sqlite3.OperationalError :

    61         pass    # ffs. INSERT just doesn't do anything otherwise

    62 

    63     return cursor

    64 

    65 def execute_commit (expr, *args) :

    66     return commit(execute(expr, *args))

    67 

    68 def execute_commit_many (expr, iter) :

    69     return commit(execute_many(expr, iter))

    70 

    71 select = execute

    72 

    73 delete = execute_commit

    74 

    75 delete_many = execute_commit_many

    76 

    77 cursor = conn.cursor

    78