aboutsummaryrefslogtreecommitdiffhomepage
path: root/lib/sisu/v0/db_drop.rb
blob: 294e531fcc845041e3528a06450ba603b5629243 (plain)
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
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
=begin

 * Name: SiSU

 * Description: a framework for document structuring, publishing and search

 * Author: Ralph Amissah

 * Copyright: (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
   2007 Ralph Amissah All Rights Reserved.

 * License: GPL 3 or later:

   SiSU, a framework for document structuring, publishing and search

   Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
   2007 Ralph Amissah

   This program is free software: you can redistribute it and/or modify it
   under the terms of the GNU General Public License as published by the Free
   Software Foundation, either version 3 of the License, or (at your option)
   any later version.

   This program is distributed in the hope that it will be useful, but WITHOUT
   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
   more details.

   You should have received a copy of the GNU General Public License along with
   this program. If not, see <http://www.gnu.org/licenses/>.

   If you have Internet connection, the latest version of the GPL should be
   available at these locations:
   <http://www.fsf.org/licenses/gpl.html>
   <http://www.gnu.org/copyleft/gpl.html>
   <http://www.jus.uio.no/sisu/gpl.fsf>

 * SiSU uses:
   * Standard SiSU markup syntax,
   * Standard SiSU meta-markup syntax, and the
   * Standard SiSU object citation numbering and system

 * Hompages:
   <http://www.jus.uio.no/sisu>
   <http://www.sisudoc.org>

 * Download:
   <http://www.jus.uio.no/sisu/SiSU/download.html>

 * Ralph Amissah
   <ralph@amissah.com>
   <ralph.amissah@gmail.com>

 ** Description: modules shared by the different db types, dbi, postgresql,
    sqlite

=end
module SiSU_DB_drop
  class Drop
    def initialize(opt,conn='',sql_type='')
      @opt,@conn,@sql_type=opt,conn,sql_type
    end
    def drop
      def tables                                                              #% drop all tables
        begin
          case @sql_type
          when /sqlite/
            cascade=''
            commit=@conn.commit
          else
            cascade='CASCADE'
            commit=''
          end
          @conn.do(%{
            DROP TABLE metadata #{cascade};
            DROP TABLE documents #{cascade};
            DROP TABLE urls #{cascade};
            DROP TABLE endnotes #{cascade};
            DROP TABLE endnotes_asterisk #{cascade};
            DROP TABLE endnotes_plus #{cascade};
          })
          commit
        rescue
          @conn.do(%{
            DROP TABLE endnotes;
            DROP TABLE endnotes_asterisk;
            DROP TABLE endnotes_plus;
            DROP TABLE urls #{cascade};
            DROP TABLE documents #{cascade};
            DROP TABLE metadata #{cascade};
          })
        ensure
          commit
        end
      end
      def indexes                                                             #% drop all indexes
        #@conn.do(%{
        #  DROP INDEX object_nr ON documents(ocn);
        #  DROP INDEX body ON documents(body);
        #  DROP INDEX clean ON documents(clean);
        #  DROP INDEX lev1 ON documents(lev1);
        #  DROP INDEX lev2 ON documents(lev2);
        #  DROP INDEX lev3 ON documents(lev3);
        #  DROP INDEX lev4 ON documents(lev4);
        #  DROP INDEX lev5 ON documents(lev5);
        #  DROP INDEX lev6 ON documents(lev6);
        #  DROP INDEX endnote_nr ON endnotes(nr);
        #  DROP INDEX endnote ON endnotes(body);
        #  DROP INDEX title ON metadata(title);
        #  DROP INDEX filename ON metadata(filename)
        #  /*
        #  DROP INDEX object_nr ON documents(ocn) CASCADE;
        #  DROP INDEX body ON documents(body) CASCADE;
        #  DROP INDEX clean ON documents(clean) CASCADE;
        #  DROP INDEX lev1 ON documents(lev1) CASCADE;
        #  DROP INDEX lev2 ON documents(lev2) CASCADE;
        #  DROP INDEX lev3 ON documents(lev3) CASCADE;
        #  DROP INDEX lev4 ON documents(lev4) CASCADE;
        #  DROP INDEX lev5 ON documents(lev5) CASCADE;
        #  DROP INDEX lev6 ON documents(lev6) CASCADE;
        #  DROP INDEX endnote_nr ON endnotes(nr) CASCADE;
        #  DROP INDEX endnote ON endnotes(body) CASCADE;
        #  DROP INDEX title ON metadata(title) CASCADE;
        #  DROP INDEX filename ON metadata(filename) CASCADE
        #  */
        #})
      end
      self
    end
  end
end
__END__