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996be9ee |
1 | package DBIx::Class::Schema::Loader::DBI::SQLite; |
2 | |
3 | use strict; |
4 | use warnings; |
893c0d45 |
5 | use base qw/ |
6 | DBIx::Class::Schema::Loader::DBI::Component::QuotedDefault |
7 | DBIx::Class::Schema::Loader::DBI |
8 | /; |
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9 | use mro 'c3'; |
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10 | use DBIx::Class::Schema::Loader::Table (); |
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11 | |
18eb280f |
12 | our $VERSION = '0.07018'; |
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13 | |
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14 | =head1 NAME |
15 | |
16 | DBIx::Class::Schema::Loader::DBI::SQLite - DBIx::Class::Schema::Loader::DBI SQLite Implementation. |
17 | |
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18 | =head1 DESCRIPTION |
19 | |
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20 | See L<DBIx::Class::Schema::Loader> and L<DBIx::Class::Schema::Loader::Base>. |
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21 | |
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22 | =head1 METHODS |
23 | |
24 | =head2 rescan |
25 | |
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26 | SQLite will fail all further commands on a connection if the underlying schema |
27 | has been modified. Therefore, any runtime changes requiring C<rescan> also |
28 | require us to re-connect to the database. The C<rescan> method here handles |
29 | that reconnection for you, but beware that this must occur for any other open |
30 | sqlite connections as well. |
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31 | |
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32 | =cut |
33 | |
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34 | sub _setup { |
35 | my $self = shift; |
36 | |
37 | $self->next::method(@_); |
38 | |
39 | if (not defined $self->preserve_case) { |
40 | $self->preserve_case(0); |
41 | } |
c4a69b87 |
42 | |
43 | if ($self->db_schema) { |
44 | warn <<'EOF'; |
45 | db_schema is not supported on SQLite, the option is implemented only for qualify_objects testing. |
46 | EOF |
47 | if ($self->db_schema->[0] eq '%') { |
48 | $self->db_schema(undef); |
49 | } |
50 | } |
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51 | } |
52 | |
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53 | sub rescan { |
54 | my ($self, $schema) = @_; |
55 | |
56 | $schema->storage->disconnect if $schema->storage; |
57 | $self->next::method($schema); |
58 | } |
59 | |
007e3511 |
60 | sub _columns_info_for { |
61 | my $self = shift; |
62 | my ($table) = @_; |
63 | |
64 | my $result = $self->next::method(@_); |
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65 | |
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66 | local $self->dbh->{FetchHashKeyName} = 'NAME_lc'; |
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67 | |
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68 | my $sth = $self->dbh->prepare( |
69 | "pragma table_info(" . $self->dbh->quote_identifier($table) . ")" |
97ab24bc |
70 | ); |
71 | $sth->execute; |
72 | my $cols = $sth->fetchall_hashref('name'); |
73 | |
116431d6 |
74 | # copy and case according to preserve_case mode |
75 | # no need to check for collisions, SQLite does not allow them |
76 | my %cols; |
77 | while (my ($col, $info) = each %$cols) { |
78 | $cols{ $self->_lc($col) } = $info; |
79 | } |
80 | |
692404d1 |
81 | my ($num_pk, $pk_col) = (0); |
82 | # SQLite doesn't give us the info we need to do this nicely :( |
83 | # If there is exactly one column marked PK, and its type is integer, |
84 | # set it is_auto_increment. This isn't 100%, but it's better than the |
85 | # alternatives. |
97ab24bc |
86 | while (my ($col_name, $info) = each %$result) { |
116431d6 |
87 | if ($cols{$col_name}{pk}) { |
88 | $num_pk++; |
89 | if (lc($cols{$col_name}{type}) eq 'integer') { |
692404d1 |
90 | $pk_col = $col_name; |
91 | } |
97ab24bc |
92 | } |
007e3511 |
93 | } |
94 | |
95 | while (my ($col, $info) = each %$result) { |
268cc246 |
96 | if ((eval { ${ $info->{default_value} } }||'') eq 'CURRENT_TIMESTAMP') { |
007e3511 |
97 | ${ $info->{default_value} } = 'current_timestamp'; |
dca5cd02 |
98 | } |
692404d1 |
99 | if ($num_pk == 1 and defined $pk_col and $pk_col eq $col) { |
100 | $info->{is_auto_increment} = 1; |
101 | } |
a8df0345 |
102 | } |
103 | |
007e3511 |
104 | return $result; |
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105 | } |
106 | |
107 | sub _table_fk_info { |
108 | my ($self, $table) = @_; |
109 | |
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110 | my $sth = $self->dbh->prepare( |
111 | "pragma foreign_key_list(" . $self->dbh->quote_identifier($table) . ")" |
dca5cd02 |
112 | ); |
113 | $sth->execute; |
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114 | |
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115 | my @rels; |
116 | while (my $fk = $sth->fetchrow_hashref) { |
117 | my $rel = $rels[ $fk->{id} ] ||= { |
118 | local_columns => [], |
119 | remote_columns => undef, |
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120 | remote_table => DBIx::Class::Schema::Loader::Table->new( |
121 | loader => $self, |
122 | name => $fk->{table}, |
123 | ($self->db_schema ? ( |
124 | schema => $self->db_schema->[0], |
125 | ignore_schema => 1, |
126 | ) : ()), |
127 | ), |
dca5cd02 |
128 | }; |
129 | |
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130 | push @{ $rel->{local_columns} }, $self->_lc($fk->{from}); |
131 | push @{ $rel->{remote_columns} }, $self->_lc($fk->{to}) if defined $fk->{to}; |
dca5cd02 |
132 | warn "This is supposed to be the same rel but remote_table changed from ", |
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133 | $rel->{remote_table}->name, " to ", $fk->{table} |
134 | if $rel->{remote_table}->name ne $fk->{table}; |
dca5cd02 |
135 | } |
136 | $sth->finish; |
137 | return \@rels; |
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138 | } |
139 | |
140 | sub _table_uniq_info { |
141 | my ($self, $table) = @_; |
142 | |
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143 | my $sth = $self->dbh->prepare( |
144 | "pragma index_list(" . $self->dbh->quote($table) . ")" |
dca5cd02 |
145 | ); |
146 | $sth->execute; |
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147 | |
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148 | my @uniqs; |
149 | while (my $idx = $sth->fetchrow_hashref) { |
150 | next unless $idx->{unique}; |
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151 | |
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152 | my $name = $idx->{name}; |
153 | |
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154 | my $get_idx_sth = $self->dbh->prepare("pragma index_info(" . $self->dbh->quote($name) . ")"); |
dca5cd02 |
155 | $get_idx_sth->execute; |
156 | my @cols; |
157 | while (my $idx_row = $get_idx_sth->fetchrow_hashref) { |
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158 | push @cols, $self->_lc($idx_row->{name}); |
dca5cd02 |
159 | } |
160 | $get_idx_sth->finish; |
4a1323d2 |
161 | |
162 | # Rename because SQLite complains about sqlite_ prefixes on identifiers |
163 | # and ignores constraint names in DDL. |
164 | $name = (join '_', @cols) . '_unique'; |
165 | |
dca5cd02 |
166 | push @uniqs, [ $name => \@cols ]; |
167 | } |
168 | $sth->finish; |
169 | return \@uniqs; |
996be9ee |
170 | } |
171 | |
172 | sub _tables_list { |
bfb43060 |
173 | my ($self, $opts) = @_; |
5223f24a |
174 | |
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175 | my $sth = $self->dbh->prepare("SELECT * FROM sqlite_master"); |
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176 | $sth->execute; |
177 | my @tables; |
178 | while ( my $row = $sth->fetchrow_hashref ) { |
26da4cc3 |
179 | next unless $row->{type} =~ /^(?:table|view)\z/i; |
522ee84e |
180 | next if $row->{tbl_name} =~ /^sqlite_/; |
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181 | push @tables, DBIx::Class::Schema::Loader::Table->new( |
182 | loader => $self, |
183 | name => $row->{tbl_name}, |
184 | ($self->db_schema ? ( |
185 | schema => $self->db_schema->[0], |
186 | ignore_schema => 1, # for qualify_objects tests |
187 | ) : ()), |
188 | ); |
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189 | } |
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190 | $sth->finish; |
bfb43060 |
191 | return $self->_filter_tables(\@tables, $opts); |
996be9ee |
192 | } |
193 | |
194 | =head1 SEE ALSO |
195 | |
196 | L<DBIx::Class::Schema::Loader>, L<DBIx::Class::Schema::Loader::Base>, |
197 | L<DBIx::Class::Schema::Loader::DBI> |
198 | |
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199 | =head1 AUTHOR |
200 | |
9cc8e7e1 |
201 | See L<DBIx::Class::Schema::Loader/AUTHOR> and L<DBIx::Class::Schema::Loader/CONTRIBUTORS>. |
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202 | |
203 | =head1 LICENSE |
204 | |
205 | This library is free software; you can redistribute it and/or modify it under |
206 | the same terms as Perl itself. |
207 | |
996be9ee |
208 | =cut |
209 | |
210 | 1; |