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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'; |
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11 | use Try::Tiny; |
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12 | use namespace::clean; |
13 | |
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14 | __PACKAGE__->sql_maker_class('DBIx::Class::SQLMaker::SQLite'); |
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15 | __PACKAGE__->sql_limit_dialect ('LimitOffset'); |
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16 | __PACKAGE__->sql_quote_char ('"'); |
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17 | __PACKAGE__->datetime_parser_type ('DateTime::Format::SQLite'); |
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18 | |
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19 | =head1 NAME |
20 | |
21 | DBIx::Class::Storage::DBI::SQLite - Automatic primary key class for SQLite |
22 | |
23 | =head1 SYNOPSIS |
24 | |
25 | # In your table classes |
26 | use base 'DBIx::Class::Core'; |
27 | __PACKAGE__->set_primary_key('id'); |
28 | |
29 | =head1 DESCRIPTION |
30 | |
31 | This class implements autoincrements for SQLite. |
32 | |
33 | =head1 METHODS |
34 | |
35 | =cut |
36 | |
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37 | sub backup { |
38 | |
39 | require File::Spec; |
40 | require File::Copy; |
41 | require POSIX; |
42 | |
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43 | my ($self, $dir) = @_; |
44 | $dir ||= './'; |
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45 | |
46 | ## Where is the db file? |
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47 | my $dsn = $self->_dbi_connect_info()->[0]; |
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48 | |
49 | my $dbname = $1 if($dsn =~ /dbname=([^;]+)/); |
50 | if(!$dbname) |
51 | { |
52 | $dbname = $1 if($dsn =~ /^dbi:SQLite:(.+)$/i); |
53 | } |
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54 | $self->throw_exception("Cannot determine name of SQLite db file") |
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55 | if(!$dbname || !-f $dbname); |
56 | |
57 | # print "Found database: $dbname\n"; |
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58 | # my $dbfile = file($dbname); |
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59 | my ($vol, $dbdir, $file) = File::Spec->splitpath($dbname); |
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60 | # my $file = $dbfile->basename(); |
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61 | $file = POSIX::strftime("%Y-%m-%d-%H_%M_%S", localtime()) . $file; |
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62 | $file = "B$file" while(-f $file); |
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63 | |
64 | mkdir($dir) unless -f $dir; |
65 | my $backupfile = File::Spec->catfile($dir, $file); |
66 | |
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67 | my $res = File::Copy::copy($dbname, $backupfile); |
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68 | $self->throw_exception("Backup failed! ($!)") if(!$res); |
69 | |
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70 | return $backupfile; |
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71 | } |
72 | |
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73 | sub _exec_svp_begin { |
74 | my ($self, $name) = @_; |
75 | |
76 | $self->_dbh->do("SAVEPOINT $name"); |
77 | } |
78 | |
79 | sub _exec_svp_release { |
80 | my ($self, $name) = @_; |
81 | |
82 | $self->_dbh->do("RELEASE SAVEPOINT $name"); |
83 | } |
84 | |
85 | sub _exec_svp_rollback { |
86 | my ($self, $name) = @_; |
87 | |
88 | # For some reason this statement changes the value of $dbh->{AutoCommit}, so |
89 | # we localize it here to preserve the original value. |
90 | local $self->_dbh->{AutoCommit} = $self->_dbh->{AutoCommit}; |
91 | |
92 | $self->_dbh->do("ROLLBACK TRANSACTION TO SAVEPOINT $name"); |
93 | } |
94 | |
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95 | sub _ping { |
96 | my $self = shift; |
97 | try { $self->_dbh->do('SELECT * FROM sqlite_master LIMIT 1'); 1 }; |
98 | } |
99 | |
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100 | sub deployment_statements { |
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101 | my $self = shift; |
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102 | my ($schema, $type, $version, $dir, $sqltargs, @rest) = @_; |
103 | |
104 | $sqltargs ||= {}; |
105 | |
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106 | if ( |
107 | ! exists $sqltargs->{producer_args}{sqlite_version} |
108 | and |
109 | my $dver = $self->_server_info->{normalized_dbms_version} |
110 | ) { |
111 | $sqltargs->{producer_args}{sqlite_version} = $dver; |
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112 | } |
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113 | |
114 | $self->next::method($schema, $type, $version, $dir, $sqltargs, @rest); |
115 | } |
116 | |
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117 | sub bind_attribute_by_data_type { |
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118 | $_[1] =~ /^ (?: int(?:eger)? | (?:tiny|small|medium)int ) $/ix |
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119 | ? do { require DBI; DBI::SQL_INTEGER() } |
120 | : undef |
121 | ; |
122 | } |
123 | |
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124 | # DBD::SQLite (at least up to version 1.31 has a bug where it will |
125 | # non-fatally nummify a string value bound as an integer, resulting |
126 | # in insertions of '0' into supposed-to-be-numeric fields |
127 | # Since this can result in severe data inconsistency, remove the |
128 | # bind attr if such a sitation is detected |
129 | # |
130 | # FIXME - when a DBD::SQLite version is released that eventually fixes |
131 | # this sutiation (somehow) - no-op this override once a proper DBD |
132 | # version is detected |
133 | sub _dbi_attrs_for_bind { |
134 | my ($self, $ident, $bind) = @_; |
135 | my $bindattrs = $self->next::method($ident, $bind); |
136 | |
137 | for (0.. $#$bindattrs) { |
138 | if ( |
139 | defined $bindattrs->[$_] |
140 | and |
141 | defined $bind->[$_][1] |
142 | and |
143 | $bindattrs->[$_] eq DBI::SQL_INTEGER() |
144 | and |
145 | ! looks_like_number ($bind->[$_][1]) |
146 | ) { |
147 | carp_unique( sprintf ( |
148 | "Non-numeric value supplied for column '%s' despite the numeric datatype", |
149 | $bind->[$_][0]{dbic_colname} || "# $_" |
150 | ) ); |
151 | undef $bindattrs->[$_]; |
152 | } |
153 | } |
154 | |
155 | return $bindattrs; |
156 | } |
157 | |
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158 | =head2 connect_call_use_foreign_keys |
159 | |
160 | Used as: |
161 | |
162 | on_connect_call => 'use_foreign_keys' |
163 | |
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164 | In L<connect_info|DBIx::Class::Storage::DBI/connect_info> to turn on foreign key |
165 | (including cascading) support for recent versions of SQLite and L<DBD::SQLite>. |
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166 | |
167 | Executes: |
168 | |
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169 | PRAGMA foreign_keys = ON |
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170 | |
171 | See L<http://www.sqlite.org/foreignkeys.html> for more information. |
172 | |
173 | =cut |
174 | |
175 | sub connect_call_use_foreign_keys { |
176 | my $self = shift; |
177 | |
178 | $self->_do_query( |
179 | 'PRAGMA foreign_keys = ON' |
180 | ); |
181 | } |
182 | |
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183 | 1; |
184 | |
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185 | =head1 AUTHORS |
186 | |
187 | Matt S. Trout <mst@shadowcatsystems.co.uk> |
188 | |
189 | =head1 LICENSE |
190 | |
191 | You may distribute this code under the same terms as Perl itself. |
192 | |
193 | =cut |