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843f8ecd |
1 | package DBIx::Class::Storage::DBI::SQLite; |
2 | |
3 | use strict; |
4 | use warnings; |
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5 | |
6 | use base qw/DBIx::Class::Storage::DBI/; |
7 | use mro 'c3'; |
8 | |
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9 | use DBIx::Class::Carp; |
10 | use Scalar::Util 'looks_like_number'; |
11 | use namespace::clean; |
12 | |
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13 | __PACKAGE__->sql_maker_class('DBIx::Class::SQLMaker::SQLite'); |
6a247f33 |
14 | __PACKAGE__->sql_limit_dialect ('LimitOffset'); |
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15 | __PACKAGE__->sql_quote_char ('"'); |
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16 | __PACKAGE__->datetime_parser_type ('DateTime::Format::SQLite'); |
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17 | |
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18 | =head1 NAME |
19 | |
20 | DBIx::Class::Storage::DBI::SQLite - Automatic primary key class for SQLite |
21 | |
22 | =head1 SYNOPSIS |
23 | |
24 | # In your table classes |
25 | use base 'DBIx::Class::Core'; |
26 | __PACKAGE__->set_primary_key('id'); |
27 | |
28 | =head1 DESCRIPTION |
29 | |
30 | This class implements autoincrements for SQLite. |
31 | |
32 | =head1 METHODS |
33 | |
34 | =cut |
35 | |
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36 | sub backup { |
37 | |
38 | require File::Spec; |
39 | require File::Copy; |
40 | require POSIX; |
41 | |
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42 | my ($self, $dir) = @_; |
43 | $dir ||= './'; |
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44 | |
45 | ## Where is the db file? |
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46 | my $dsn = $self->_dbi_connect_info()->[0]; |
c9d2e0a2 |
47 | |
48 | my $dbname = $1 if($dsn =~ /dbname=([^;]+)/); |
49 | if(!$dbname) |
50 | { |
51 | $dbname = $1 if($dsn =~ /^dbi:SQLite:(.+)$/i); |
52 | } |
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53 | $self->throw_exception("Cannot determine name of SQLite db file") |
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54 | if(!$dbname || !-f $dbname); |
55 | |
56 | # print "Found database: $dbname\n"; |
79923569 |
57 | # my $dbfile = file($dbname); |
8795fefb |
58 | my ($vol, $dbdir, $file) = File::Spec->splitpath($dbname); |
79923569 |
59 | # my $file = $dbfile->basename(); |
357eb92c |
60 | $file = POSIX::strftime("%Y-%m-%d-%H_%M_%S", localtime()) . $file; |
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61 | $file = "B$file" while(-f $file); |
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62 | |
63 | mkdir($dir) unless -f $dir; |
64 | my $backupfile = File::Spec->catfile($dir, $file); |
65 | |
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66 | my $res = File::Copy::copy($dbname, $backupfile); |
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67 | $self->throw_exception("Backup failed! ($!)") if(!$res); |
68 | |
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69 | return $backupfile; |
c9d2e0a2 |
70 | } |
71 | |
86a51471 |
72 | sub _exec_svp_begin { |
73 | my ($self, $name) = @_; |
74 | |
75 | $self->_dbh->do("SAVEPOINT $name"); |
76 | } |
77 | |
78 | sub _exec_svp_release { |
79 | my ($self, $name) = @_; |
80 | |
81 | $self->_dbh->do("RELEASE SAVEPOINT $name"); |
82 | } |
83 | |
84 | sub _exec_svp_rollback { |
85 | my ($self, $name) = @_; |
86 | |
87 | # For some reason this statement changes the value of $dbh->{AutoCommit}, so |
88 | # we localize it here to preserve the original value. |
89 | local $self->_dbh->{AutoCommit} = $self->_dbh->{AutoCommit}; |
90 | |
91 | $self->_dbh->do("ROLLBACK TRANSACTION TO SAVEPOINT $name"); |
92 | } |
93 | |
2361982d |
94 | sub deployment_statements { |
96736321 |
95 | my $self = shift; |
2361982d |
96 | my ($schema, $type, $version, $dir, $sqltargs, @rest) = @_; |
97 | |
98 | $sqltargs ||= {}; |
99 | |
96736321 |
100 | if ( |
101 | ! exists $sqltargs->{producer_args}{sqlite_version} |
102 | and |
103 | my $dver = $self->_server_info->{normalized_dbms_version} |
104 | ) { |
105 | $sqltargs->{producer_args}{sqlite_version} = $dver; |
6d766626 |
106 | } |
2361982d |
107 | |
108 | $self->next::method($schema, $type, $version, $dir, $sqltargs, @rest); |
109 | } |
110 | |
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111 | # In addition to checking for integer data_types, we need to check for generic |
112 | # NUMBER data_types with a zero scale, such as NUMBER(38,0) in Oracle, which are |
113 | # integer types. Because bind_attribute_by_data_type cannot check the |
114 | # column_info size, and the regexes are very hairy, we do the checking in |
115 | # _resolve_bindattrs and cache the result of the check in the column_info. |
116 | # |
117 | sub _resolve_bindattrs { |
118 | my $self = shift; |
119 | my ($ident, $bind, $colinfos) = @_; |
120 | |
121 | $colinfos = $self->_resolve_column_info($ident) |
122 | unless keys %$colinfos; |
123 | |
124 | my $binds = $self->next::method(@_); |
125 | |
126 | BIND: foreach my $bind (@$binds) { |
127 | my $attrs = $bind->[0]; |
128 | my $col = $attrs->{dbic_colname}; |
129 | |
130 | if (exists $colinfos->{$col}{_is_integer_data_type} |
131 | && $colinfos->{$col}{_is_integer_data_type} == 1) { # cached |
132 | |
133 | $attrs->{dbd_attrs} = do { require DBI; DBI::SQL_INTEGER() }; |
134 | next BIND; |
135 | } |
136 | |
137 | my $data_type = $attrs->{sqlt_datatype}; |
138 | my $size = $attrs->{sqlt_size}; |
139 | |
140 | my $is_int_type = $self->_is_integer_type($data_type) ? 1 : 0; |
141 | |
142 | # This should really live in ::DBI and cache in column_info, but currently |
143 | # only needed in SQLite. |
144 | if ((not $is_int_type) |
145 | && (ref $size eq 'ARRAY' && $size->[1] == 0) |
146 | && $data_type =~ /^(?:real|float|double(?:\s+precision)?|dec(?:imal)?|numeric|number|fixed|money|currency)(?:\s+unsigned)?\z/i) { |
147 | |
148 | $is_int_type = 1; |
149 | } |
150 | |
151 | if ($is_int_type) { |
152 | $attrs->{dbd_attrs} = do { require DBI; DBI::SQL_INTEGER() }; |
153 | |
154 | $colinfos->{$col}{_is_integer_data_type} = 1; # cache |
155 | } |
156 | } |
157 | |
158 | return $binds; |
0e773352 |
159 | } |
160 | |
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161 | # DBD::SQLite (at least up to version 1.31 has a bug where it will |
162 | # non-fatally nummify a string value bound as an integer, resulting |
163 | # in insertions of '0' into supposed-to-be-numeric fields |
164 | # Since this can result in severe data inconsistency, remove the |
165 | # bind attr if such a sitation is detected |
166 | # |
167 | # FIXME - when a DBD::SQLite version is released that eventually fixes |
168 | # this sutiation (somehow) - no-op this override once a proper DBD |
169 | # version is detected |
c50a1dbf |
170 | # |
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171 | sub _dbi_attrs_for_bind { |
172 | my ($self, $ident, $bind) = @_; |
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173 | |
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174 | my $bindattrs = $self->next::method($ident, $bind); |
175 | |
176 | for (0.. $#$bindattrs) { |
177 | if ( |
178 | defined $bindattrs->[$_] |
179 | and |
180 | defined $bind->[$_][1] |
181 | and |
182 | $bindattrs->[$_] eq DBI::SQL_INTEGER() |
183 | and |
184 | ! looks_like_number ($bind->[$_][1]) |
185 | ) { |
186 | carp_unique( sprintf ( |
187 | "Non-numeric value supplied for column '%s' despite the numeric datatype", |
188 | $bind->[$_][0]{dbic_colname} || "# $_" |
189 | ) ); |
190 | undef $bindattrs->[$_]; |
191 | } |
192 | } |
193 | |
194 | return $bindattrs; |
195 | } |
196 | |
732e4282 |
197 | =head2 connect_call_use_foreign_keys |
198 | |
199 | Used as: |
200 | |
201 | on_connect_call => 'use_foreign_keys' |
202 | |
8384a713 |
203 | In L<connect_info|DBIx::Class::Storage::DBI/connect_info> to turn on foreign key |
204 | (including cascading) support for recent versions of SQLite and L<DBD::SQLite>. |
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205 | |
206 | Executes: |
207 | |
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208 | PRAGMA foreign_keys = ON |
732e4282 |
209 | |
210 | See L<http://www.sqlite.org/foreignkeys.html> for more information. |
211 | |
212 | =cut |
213 | |
214 | sub connect_call_use_foreign_keys { |
215 | my $self = shift; |
216 | |
217 | $self->_do_query( |
218 | 'PRAGMA foreign_keys = ON' |
219 | ); |
220 | } |
221 | |
843f8ecd |
222 | 1; |
223 | |
843f8ecd |
224 | =head1 AUTHORS |
225 | |
226 | Matt S. Trout <mst@shadowcatsystems.co.uk> |
227 | |
228 | =head1 LICENSE |
229 | |
230 | You may distribute this code under the same terms as Perl itself. |
231 | |
232 | =cut |