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
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
|
package DBIx::Class::Schema::Loader::DBI::SQLite;
use strict;
use warnings;
use base 'DBIx::Class::Schema::Loader::DBI::Component::QuotedDefault';
use mro 'c3';
use DBIx::Class::Schema::Loader::Table ();
our $VERSION = '0.07025';
=head1 NAME
DBIx::Class::Schema::Loader::DBI::SQLite - DBIx::Class::Schema::Loader::DBI SQLite Implementation.
=head1 DESCRIPTION
See L<DBIx::Class::Schema::Loader> and L<DBIx::Class::Schema::Loader::Base>.
=head1 METHODS
=head2 rescan
SQLite will fail all further commands on a connection if the underlying schema
has been modified. Therefore, any runtime changes requiring C<rescan> also
require us to re-connect to the database. The C<rescan> method here handles
that reconnection for you, but beware that this must occur for any other open
sqlite connections as well.
=cut
sub _setup {
my $self = shift;
$self->next::method(@_);
if (not defined $self->preserve_case) {
$self->preserve_case(0);
}
if ($self->db_schema) {
warn <<'EOF';
db_schema is not supported on SQLite, the option is implemented only for qualify_objects testing.
EOF
if ($self->db_schema->[0] eq '%') {
$self->db_schema(undef);
}
}
}
sub rescan {
my ($self, $schema) = @_;
$schema->storage->disconnect if $schema->storage;
$self->next::method($schema);
}
sub _columns_info_for {
my $self = shift;
my ($table) = @_;
my $result = $self->next::method(@_);
local $self->dbh->{FetchHashKeyName} = 'NAME_lc';
my $sth = $self->dbh->prepare(
"pragma table_info(" . $self->dbh->quote_identifier($table) . ")"
);
$sth->execute;
my $cols = $sth->fetchall_hashref('name');
# copy and case according to preserve_case mode
# no need to check for collisions, SQLite does not allow them
my %cols;
while (my ($col, $info) = each %$cols) {
$cols{ $self->_lc($col) } = $info;
}
my ($num_pk, $pk_col) = (0);
# SQLite doesn't give us the info we need to do this nicely :(
# If there is exactly one column marked PK, and its type is integer,
# set it is_auto_increment. This isn't 100%, but it's better than the
# alternatives.
while (my ($col_name, $info) = each %$result) {
if ($cols{$col_name}{pk}) {
$num_pk++;
if (lc($cols{$col_name}{type}) eq 'integer') {
$pk_col = $col_name;
}
}
}
while (my ($col, $info) = each %$result) {
if ((eval { ${ $info->{default_value} } }||'') eq 'CURRENT_TIMESTAMP') {
${ $info->{default_value} } = 'current_timestamp';
}
if ($num_pk == 1 and defined $pk_col and $pk_col eq $col) {
$info->{is_auto_increment} = 1;
}
}
return $result;
}
sub _table_fk_info {
my ($self, $table) = @_;
my $sth = $self->dbh->prepare(
"pragma foreign_key_list(" . $self->dbh->quote_identifier($table) . ")"
);
$sth->execute;
my @rels;
while (my $fk = $sth->fetchrow_hashref) {
my $rel = $rels[ $fk->{id} ] ||= {
local_columns => [],
remote_columns => undef,
remote_table => DBIx::Class::Schema::Loader::Table->new(
loader => $self,
name => $fk->{table},
($self->db_schema ? (
schema => $self->db_schema->[0],
ignore_schema => 1,
) : ()),
),
};
push @{ $rel->{local_columns} }, $self->_lc($fk->{from});
push @{ $rel->{remote_columns} }, $self->_lc($fk->{to}) if defined $fk->{to};
warn "This is supposed to be the same rel but remote_table changed from ",
$rel->{remote_table}->name, " to ", $fk->{table}
if $rel->{remote_table}->name ne $fk->{table};
}
$sth->finish;
return \@rels;
}
sub _table_uniq_info {
my ($self, $table) = @_;
my $sth = $self->dbh->prepare(
"pragma index_list(" . $self->dbh->quote($table) . ")"
);
$sth->execute;
my @uniqs;
while (my $idx = $sth->fetchrow_hashref) {
next unless $idx->{unique};
my $name = $idx->{name};
my $get_idx_sth = $self->dbh->prepare("pragma index_info(" . $self->dbh->quote($name) . ")");
$get_idx_sth->execute;
my @cols;
while (my $idx_row = $get_idx_sth->fetchrow_hashref) {
push @cols, $self->_lc($idx_row->{name});
}
$get_idx_sth->finish;
# Rename because SQLite complains about sqlite_ prefixes on identifiers
# and ignores constraint names in DDL.
$name = (join '_', @cols) . '_unique';
push @uniqs, [ $name => \@cols ];
}
$sth->finish;
return \@uniqs;
}
sub _tables_list {
my ($self, $opts) = @_;
my $sth = $self->dbh->prepare("SELECT * FROM sqlite_master");
$sth->execute;
my @tables;
while ( my $row = $sth->fetchrow_hashref ) {
next unless $row->{type} =~ /^(?:table|view)\z/i;
next if $row->{tbl_name} =~ /^sqlite_/;
push @tables, DBIx::Class::Schema::Loader::Table->new(
loader => $self,
name => $row->{tbl_name},
($self->db_schema ? (
schema => $self->db_schema->[0],
ignore_schema => 1, # for qualify_objects tests
) : ()),
);
}
$sth->finish;
return $self->_filter_tables(\@tables, $opts);
}
=head1 SEE ALSO
L<DBIx::Class::Schema::Loader>, L<DBIx::Class::Schema::Loader::Base>,
L<DBIx::Class::Schema::Loader::DBI>
=head1 AUTHOR
See L<DBIx::Class::Schema::Loader/AUTHOR> and L<DBIx::Class::Schema::Loader/CONTRIBUTORS>.
=head1 LICENSE
This library is free software; you can redistribute it and/or modify it under
the same terms as Perl itself.
=cut
1;
|
