X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FDBIx%2FClass%2FSchema%2FLoader%2FDBI%2FSQLite.pm;h=2f6be90486493819b2d0e06c2df85e93cdc25a3d;hb=306bf770bf08b06f92863808b1938f2fc704acb0;hp=cbe9ae01f66c071ab5f7d44a8e4b3a5e9cf96d0e;hpb=dc767cd32c6728d4d9c3504acd259c0b2f19da2b;p=dbsrgits%2FDBIx-Class-Schema-Loader.git diff --git a/lib/DBIx/Class/Schema/Loader/DBI/SQLite.pm b/lib/DBIx/Class/Schema/Loader/DBI/SQLite.pm index cbe9ae0..2f6be90 100644 --- a/lib/DBIx/Class/Schema/Loader/DBI/SQLite.pm +++ b/lib/DBIx/Class/Schema/Loader/DBI/SQLite.pm @@ -2,46 +2,51 @@ package DBIx::Class::Schema::Loader::DBI::SQLite; use strict; use warnings; -use base qw/ - DBIx::Class::Schema::Loader::DBI::Component::QuotedDefault - DBIx::Class::Schema::Loader::DBI -/; -use Carp::Clan qw/^DBIx::Class/; -use Text::Balanced qw( extract_bracketed ); -use Class::C3; +use base 'DBIx::Class::Schema::Loader::DBI::Component::QuotedDefault'; +use mro 'c3'; +use DBIx::Class::Schema::Loader::Table (); -our $VERSION = '0.05001'; +our $VERSION = '0.07047'; =head1 NAME DBIx::Class::Schema::Loader::DBI::SQLite - DBIx::Class::Schema::Loader::DBI SQLite Implementation. -=head1 SYNOPSIS - - package My::Schema; - use base qw/DBIx::Class::Schema::Loader/; - - __PACKAGE__->loader_options( debug => 1 ); - - 1; - =head1 DESCRIPTION -See L. +See L and L. =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 also require us to re-connect -to the database. The C method here handles that -reconnection for you, but beware that this must occur for -any other open sqlite connections as well. +SQLite will fail all further commands on a connection if the underlying schema +has been modified. Therefore, any runtime changes requiring C also +require us to re-connect to the database. The C 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) = @_; @@ -49,153 +54,210 @@ sub rescan { $self->next::method($schema); } -# XXX this really needs a re-factor -sub _sqlite_parse_table { - my ($self, $table) = @_; +sub _columns_info_for { + my $self = shift; + my ($table) = @_; - my @rels; - my @uniqs; - my %auto_inc; + my $result = $self->next::method(@_); - my $dbh = $self->schema->storage->dbh; - my $sth = $self->{_cache}->{sqlite_master} - ||= $dbh->prepare(q{SELECT sql FROM sqlite_master WHERE tbl_name = ?}); + local $self->dbh->{FetchHashKeyName} = 'NAME_lc'; - $sth->execute($table); - my ($sql) = $sth->fetchrow_array; - $sth->finish; + my $sth = $self->dbh->prepare( + "pragma table_info(" . $self->dbh->quote_identifier($table) . ")" + ); + $sth->execute; + my $cols = $sth->fetchall_hashref('name'); - # Cut "CREATE TABLE ( )" blabla... - $sql =~ /^[\w\s']+\((.*)\)$/si; - my $cols = $1; - - # strip single-line comments - $cols =~ s/\-\-.*\n/\n/g; - - # temporarily replace any commas inside parens, - # so we don't incorrectly split on them below - my $cols_no_bracketed_commas = $cols; - while ( my $extracted = - ( extract_bracketed( $cols, "()", "[^(]*" ) )[0] ) - { - my $replacement = $extracted; - $replacement =~ s/,/--comma--/g; - $replacement =~ s/^\(//; - $replacement =~ s/\)$//; - $cols_no_bracketed_commas =~ s/$extracted/$replacement/m; + # copy and case according to preserve_case mode + # no need to check for collisions, SQLite does not allow them + my %cols; + while (my ($col, $info) = each %$cols) { + $cols{ $self->_lc($col) } = $info; } - # Split column definitions - for my $col ( split /,/, $cols_no_bracketed_commas ) { - - # put the paren-bracketed commas back, to help - # find multi-col fks below - $col =~ s/\-\-comma\-\-/,/g; - - $col =~ s/^\s*FOREIGN\s+KEY\s*//i; - - # Strip punctuations around key and table names - $col =~ s/[\[\]'"]/ /g; - $col =~ s/^\s+//gs; - - # Grab reference - chomp $col; - - if($col =~ /^(.*)\s+UNIQUE/i) { - my $colname = $1; - $colname =~ s/\s+.*$//; - push(@uniqs, [ "${colname}_unique" => [ lc $colname ] ]); - } - elsif($col =~/^\s*UNIQUE\s*\(\s*(.*)\)/i) { - my $cols = $1; - $cols =~ s/\s+$//; - my @cols = map { lc } split(/\s*,\s*/, $cols); - my $name = join(q{_}, @cols) . '_unique'; - push(@uniqs, [ $name => \@cols ]); + my ($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 = $col_name; + } } + } - if ($col =~ /AUTOINCREMENT/i) { - $col =~ /^(\S+)/; - $auto_inc{lc $1} = 1; - } - - next if $col !~ /^(.*\S)\s+REFERENCES\s+(\w+) (?: \s* \( (.*) \) )? /ix; - - my ($cols, $f_table, $f_cols) = ($1, $2, $3); - - if($cols =~ /^\(/) { # Table-level - $cols =~ s/^\(\s*//; - $cols =~ s/\s*\)$//; + while (my ($col, $info) = each %$result) { + if ((eval { ${ $info->{default_value} } }||'') eq 'CURRENT_TIMESTAMP') { + ${ $info->{default_value} } = 'current_timestamp'; } - else { # Inline - $cols =~ s/\s+.*$//; - } - - my @cols = map { s/\s*//g; lc $_ } split(/\s*,\s*/,$cols); - my $rcols; - if($f_cols) { - my @f_cols = map { s/\s*//g; lc $_ } split(/\s*,\s*/,$f_cols); - croak "Mismatched column count in rel for $table => $f_table" - if @cols != @f_cols; - $rcols = \@f_cols; + if ($num_pk == 1 and defined $pk_col and $pk_col eq $col) { + $info->{is_auto_increment} = 1; } - push(@rels, { - local_columns => \@cols, - remote_columns => $rcols, - remote_table => $f_table, - }); } - return { rels => \@rels, uniqs => \@uniqs, auto_inc => \%auto_inc }; + return $result; } -sub _extra_column_info { - my ($self, $table, $col_name, $sth, $col_num) = @_; - ($table, $col_name) = @{$table}{qw/TABLE_NAME COLUMN_NAME/} if ref $table; - my %extra_info; +sub _table_fk_info { + my ($self, $table) = @_; + + my $sth = $self->dbh->prepare( + "pragma foreign_key_list(" . $self->dbh->quote_identifier($table) . ")" + ); + $sth->execute; - $self->{_sqlite_parse_data}->{$table} ||= - $self->_sqlite_parse_table($table); + 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}; + + $rel->{attrs} ||= { + on_delete => uc $fk->{on_delete}, + on_update => uc $fk->{on_update}, + }; + + 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}; + } + $sth->finish; - if ($self->{_sqlite_parse_data}->{$table}->{auto_inc}->{$col_name}) { - $extra_info{is_auto_increment} = 1; + # now we need to determine whether each FK is DEFERRABLE, this can only be + # done by parsing the DDL from sqlite_master + + my $ddl = $self->dbh->selectcol_arrayref(<<"EOF", undef, $table->name, $table->name)->[0]; +select sql from sqlite_master +where name = ? and tbl_name = ? +EOF + + foreach my $fk (@rels) { + my $local_cols = '"?' . (join '"? \s* , \s* "?', map quotemeta, @{ $fk->{local_columns} }) . '"?'; + my $remote_cols = '"?' . (join '"? \s* , \s* "?', map quotemeta, @{ $fk->{remote_columns} || [] }) . '"?'; + my ($deferrable_clause) = $ddl =~ / + foreign \s+ key \s* \( \s* $local_cols \s* \) \s* references \s* (?:\S+|".+?(?{attrs}{is_deferrable} = $deferrable_clause =~ /not/i ? 0 : 1; + } + else { + # check for inline constraint if 1 local column + if (@{ $fk->{local_columns} } == 1) { + my ($local_col) = @{ $fk->{local_columns} }; + my ($remote_col) = @{ $fk->{remote_columns} || [] }; + $remote_col ||= ''; + + my ($deferrable_clause) = $ddl =~ / + "?\Q$local_col\E"? \s* (?:\w+\s*)* (?: \( \s* \d\+ (?:\s*,\s*\d+)* \s* \) )? \s* + references \s+ (?:\S+|".+?(?{attrs}{is_deferrable} = $deferrable_clause =~ /not/i ? 0 : 1; + } + else { + $fk->{attrs}{is_deferrable} = 0; + } + } + else { + $fk->{attrs}{is_deferrable} = 0; + } + } } - return \%extra_info; + return \@rels; } -sub _table_fk_info { +sub _table_uniq_info { my ($self, $table) = @_; - $self->{_sqlite_parse_data}->{$table} ||= - $self->_sqlite_parse_table($table); + my $sth = $self->dbh->prepare( + "pragma index_list(" . $self->dbh->quote($table) . ")" + ); + $sth->execute; - return $self->{_sqlite_parse_data}->{$table}->{rels}; -} + my @uniqs; + while (my $idx = $sth->fetchrow_hashref) { + next unless $idx->{unique}; -sub _table_uniq_info { - my ($self, $table) = @_; + 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; - $self->{_sqlite_parse_data}->{$table} ||= - $self->_sqlite_parse_table($table); + # Rename because SQLite complains about sqlite_ prefixes on identifiers + # and ignores constraint names in DDL. + $name = (join '_', @cols) . '_unique'; - return $self->{_sqlite_parse_data}->{$table}->{uniqs}; + push @uniqs, [ $name => \@cols ]; + } + $sth->finish; + return [ sort { $a->[0] cmp $b->[0] } @uniqs ]; } sub _tables_list { - my $self = shift; + my ($self) = @_; - my $dbh = $self->schema->storage->dbh; - my $sth = $dbh->prepare("SELECT * FROM sqlite_master"); + my $sth = $self->dbh->prepare("SELECT * FROM sqlite_master"); $sth->execute; my @tables; while ( my $row = $sth->fetchrow_hashref ) { - next unless lc( $row->{type} ) eq 'table'; + next unless $row->{type} =~ /^(?:table|view)\z/i; next if $row->{tbl_name} =~ /^sqlite_/; - push @tables, $row->{tbl_name}; + 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 @tables; + return $self->_filter_tables(\@tables); +} + +sub _table_info_matches { + my ($self, $table, $info) = @_; + + my $table_schema = $table->schema; + $table_schema = 'main' if !defined $table_schema; + return $info->{TABLE_SCHEM} eq $table_schema + && $info->{TABLE_NAME} eq $table->name; } =head1 SEE ALSO @@ -203,9 +265,9 @@ sub _tables_list { L, L, L -=head1 AUTHOR +=head1 AUTHORS -See L and L. +See L. =head1 LICENSE @@ -215,3 +277,4 @@ the same terms as Perl itself. =cut 1; +# vim:et sts=4 sw=4 tw=0: