/usr/share/perl5/Rose/DB/Object/Metadata/Auto/SQLite.pm is in librose-db-object-perl 1:0.815-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 | package Rose::DB::Object::Metadata::Auto::SQLite;
use strict;
use Carp();
use Rose::DB::Object::Metadata::ForeignKey;
use Rose::DB::Object::Metadata::UniqueKey;
use Rose::DB::Object::Metadata::Auto;
our @ISA = qw(Rose::DB::Object::Metadata::Auto);
our $VERSION = '0.784';
sub auto_generate_columns
{
my($self) = shift;
my($class, %columns, $error);
TRY:
{
local $@;
eval
{
my $col_info = ($self->_table_info)[0] || [];
die "No columns found" unless(@$col_info);
my $db = $self->db;
my $dbh = $db->dbh or die $db->error;
foreach my $info (@$col_info)
{
$db->refine_dbi_column_info($info);
$columns{$info->{'COLUMN_NAME'}} =
$self->auto_generate_column($info->{'COLUMN_NAME'}, $info);
}
};
$error = $@;
}
if($error || !keys %columns)
{
no warnings; # undef strings okay
Carp::croak "Could not auto-generate columns for class $class, table '",
$self->table, "' - $error";
}
$self->auto_alias_columns(values %columns);
return wantarray ? values %columns : \%columns;
}
my $UK_Num = 1;
sub auto_generate_unique_keys
{
my($self) = shift;
unless(defined wantarray)
{
Carp::croak "Useless call to auto_generate_unique_keys() in void context";
}
my($class, %unique_keys, $error);
TRY:
{
local $@;
eval
{
my $uk_info = ($self->_table_info)[2] || [];
foreach my $info (@$uk_info)
{
my $uk_name = 'unique_key_' . $UK_Num++;
my $uk = $unique_keys{$uk_name} =
Rose::DB::Object::Metadata::UniqueKey->new(name => $uk_name,
parent => $self);
foreach my $column (@$info)
{
$uk->add_column($column);
}
$unique_keys{$uk_name} = $uk;
}
};
$error = $@;
}
if($error)
{
Carp::croak "Could not auto-retrieve unique keys for class $class - $error";
}
# This sort order is part of the API, and is essential to make the
# test suite work.
my @uk = map { $unique_keys{$_} } sort map { lc } keys(%unique_keys);
return wantarray ? @uk : \@uk;
}
sub auto_generate_foreign_keys
{
my($self, %args) = @_;
unless(defined wantarray)
{
Carp::croak "Useless call to auto_generate_foreign_keys() in void context";
}
my $no_warnings = $args{'no_warnings'};
my($class, @foreign_keys, $total_fks, $error);
TRY:
{
local $@;
eval
{
$class = $self->class or die "Missing class!";
my $db = $self->db;
my $dbh = $db->dbh or die $db->error;
my $table_quoted = $db->quote_table_name($self->table);
# Silence this stupid warning when a table has no foreign keys:
# DBD::SQLite::st fetchrow_hashref warning: not an error(0) at dbdimp.c line 504
local $dbh->{'PrintWarn'} = 0;
my $sth = $dbh->prepare("PRAGMA foreign_key_list($table_quoted)");
$sth->execute;
my %fk_info;
while(my $row = $sth->fetchrow_hashref)
{
push(@{$fk_info{$row->{'id'}}}, $row);
}
my $cm = $self->convention_manager;
FK: foreach my $id (sort { $a <=> $b } keys(%fk_info))
{
my $col_info = $fk_info{$id};
my $foreign_table = $col_info->[0]{'table'};
my $foreign_class = $self->class_for(table => $foreign_table);
unless($foreign_class)
{
# Add deferred task
$self->add_deferred_task(
{
class => $self->class,
method => 'auto_init_foreign_keys',
args => \%args,
code => sub
{
$self->auto_init_foreign_keys(%args);
$self->make_foreign_key_methods(%args, preserve_existing => 1);
},
check => sub
{
my $fks = $self->foreign_keys;
return @$fks == $total_fks ? 1 : 0;
}
});
unless($no_warnings || $self->allow_auto_initialization)
{
no warnings; # Allow undef coercion to empty string
warn "No Rose::DB::Object-derived class found for table ",
"'$foreign_table'";
}
$total_fks++;
next FK;
}
my(@local_columns, @foreign_columns);
foreach my $item (@$col_info)
{
push(@local_columns, $item->{'from'});
push(@foreign_columns, $item->{'to'});
}
unless(@local_columns > 0 && @local_columns == @foreign_columns)
{
die "Failed to extract a matched set of columns from ",
'PRAGMA foreign_key_list(', $self->table, ')';
}
my %key_columns;
@key_columns{@local_columns} = @foreign_columns;
my $fk =
Rose::DB::Object::Metadata::ForeignKey->new(
class => $foreign_class,
key_columns => \%key_columns);
push(@foreign_keys, $fk);
$total_fks++;
}
# This step is important! It ensures that foreign keys will be created
# in a deterministic order, which in turn allows the "auto-naming" of
# foreign keys to work in a predictable manner. This exact sort order
# (lowercase table name comparisons) is part of the API for foreign
# key auto generation.
@foreign_keys =
sort { lc $a->class->meta->table cmp lc $b->class->meta->table }
@foreign_keys;
my %used_names;
foreach my $fk (@foreign_keys)
{
my $name =
$cm->auto_foreign_key_name($fk->class, $fk->name, scalar $fk->key_columns, \%used_names);
unless(defined $name)
{
$fk->name($name = $self->foreign_key_name_generator->($self, $fk));
}
unless(defined $name && $name =~ /^\w+$/)
{
die "Missing or invalid key name '$name' for foreign key ",
"generated in $class for ", $fk->class;
}
$used_names{$name}++;
$fk->name($name);
}
};
$error = $@;
}
if($error)
{
Carp::croak "Could not auto-generate foreign keys for class $class - $error";
}
@foreign_keys = sort { lc $a->name cmp lc $b->name } @foreign_keys;
return wantarray ? @foreign_keys : \@foreign_keys;
}
sub _table_info
{
my($self) = shift;
# XXX: I'm in the process of moving all introspection to Rose::DB.
# XXX: _table_info is an undocumented method of Rose::DB::SQLite
$self->db->_table_info($self->table);
}
1;
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