X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FDBIx%2FClass%2FSchema%2FLoader%2FDBI%2FPg.pm;h=512220ca89028f44131c984b75e279a122b37e83;hb=c34033b1f21ade200b20f78940c2c32a8843fd17;hp=d5fc32efaa44664ee135da1132bed962c94e632d;hpb=78b7ccaaaff070d6053dda2843007369d7501662;p=dbsrgits%2FDBIx-Class-Schema-Loader.git diff --git a/lib/DBIx/Class/Schema/Loader/DBI/Pg.pm b/lib/DBIx/Class/Schema/Loader/DBI/Pg.pm index d5fc32e..512220c 100644 --- a/lib/DBIx/Class/Schema/Loader/DBI/Pg.pm +++ b/lib/DBIx/Class/Schema/Loader/DBI/Pg.pm @@ -2,29 +2,19 @@ package DBIx::Class::Schema::Loader::DBI::Pg; use strict; use warnings; -use base 'DBIx::Class::Schema::Loader::DBI'; -use Carp::Clan qw/^DBIx::Class/; -use Class::C3; +use base 'DBIx::Class::Schema::Loader::DBI::Component::QuotedDefault'; +use mro 'c3'; -our $VERSION = '0.04999_01'; +our $VERSION = '0.07032'; =head1 NAME DBIx::Class::Schema::Loader::DBI::Pg - DBIx::Class::Schema::Loader::DBI PostgreSQL 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. =cut @@ -32,9 +22,78 @@ sub _setup { my $self = shift; $self->next::method(@_); - $self->{db_schema} ||= 'public'; + + $self->{db_schema} ||= ['public']; + + if (not defined $self->preserve_case) { + $self->preserve_case(0); + } + elsif ($self->preserve_case) { + $self->schema->storage->sql_maker->quote_char('"'); + $self->schema->storage->sql_maker->name_sep('.'); + } +} + +sub _system_schemas { + my $self = shift; + + return ($self->next::method(@_), 'pg_catalog'); } +sub _table_fk_info { + my ($self, $table) = @_; + + my $sth = $self->dbh->prepare_cached(<<"EOF"); +SELECT rc.constraint_name, rc.unique_constraint_schema, uk_tc.table_name, + fk_kcu.column_name, uk_kcu.column_name, rc.delete_rule, rc.update_rule, + fk_tc.is_deferrable +FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS fk_tc +JOIN INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS rc + ON rc.constraint_name = fk_tc.constraint_name + AND rc.constraint_schema = fk_tc.table_schema +JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE fk_kcu + ON fk_kcu.constraint_name = fk_tc.constraint_name + AND fk_kcu.table_name = fk_tc.table_name + AND fk_kcu.table_schema = fk_tc.table_schema +JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS uk_tc + ON uk_tc.constraint_name = rc.unique_constraint_name + AND uk_tc.table_schema = rc.unique_constraint_schema +JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE uk_kcu + ON uk_kcu.constraint_name = rc.unique_constraint_name + AND uk_kcu.ordinal_position = fk_kcu.ordinal_position + AND uk_kcu.table_name = uk_tc.table_name + AND uk_kcu.table_schema = rc.unique_constraint_schema +WHERE fk_tc.table_name = ? + AND fk_tc.table_schema = ? +ORDER BY fk_kcu.ordinal_position +EOF + + $sth->execute($table->name, $table->schema); + + my %rels; + + while (my ($fk, $remote_schema, $remote_table, $col, $remote_col, + $delete_rule, $update_rule, $is_deferrable) = $sth->fetchrow_array) { + push @{ $rels{$fk}{local_columns} }, $self->_lc($col); + push @{ $rels{$fk}{remote_columns} }, $self->_lc($remote_col); + + $rels{$fk}{remote_table} = DBIx::Class::Schema::Loader::Table->new( + loader => $self, + name => $remote_table, + schema => $remote_schema, + ) unless exists $rels{$fk}{remote_table}; + + $rels{$fk}{attrs} ||= { + on_delete => uc $delete_rule, + on_update => uc $update_rule, + is_deferrable => uc $is_deferrable eq 'YES' ? 1 : 0, + }; + } + + return [ values %rels ]; +} + + sub _table_uniq_info { my ($self, $table) = @_; @@ -43,18 +102,17 @@ sub _table_uniq_info { if $DBD::Pg::VERSION >= 1.50; my @uniqs; - my $dbh = $self->schema->storage->dbh; # Most of the SQL here is mostly based on # Rose::DB::Object::Metadata::Auto::Pg, after some prodding from # John Siracusa to use his superior SQL code :) - my $attr_sth = $self->{_cache}->{pg_attr_sth} ||= $dbh->prepare( + my $attr_sth = $self->{_cache}->{pg_attr_sth} ||= $self->dbh->prepare( q{SELECT attname FROM pg_catalog.pg_attribute WHERE attrelid = ? AND attnum = ?} ); - my $uniq_sth = $self->{_cache}->{pg_uniq_sth} ||= $dbh->prepare( + my $uniq_sth = $self->{_cache}->{pg_uniq_sth} ||= $self->dbh->prepare( q{SELECT x.indrelid, i.relname, x.indkey FROM pg_catalog.pg_index x @@ -71,7 +129,7 @@ sub _table_uniq_info { c.relname = ?} ); - $uniq_sth->execute($self->db_schema, $table); + $uniq_sth->execute($table->schema, $table->name); while(my $row = $uniq_sth->fetchrow_arrayref) { my ($tableid, $indexname, $col_nums) = @$row; $col_nums =~ s/^\s+//; @@ -81,7 +139,7 @@ sub _table_uniq_info { foreach (@col_nums) { $attr_sth->execute($tableid, $_); my $name_aref = $attr_sth->fetchrow_arrayref; - push(@col_names, $name_aref->[0]) if $name_aref; + push(@col_names, $self->_lc($name_aref->[0])) if $name_aref; } if(!@col_names) { @@ -95,10 +153,191 @@ sub _table_uniq_info { return \@uniqs; } -sub _column_is_auto_increment { - my ($self, $info) = @_; +sub _table_comment { + my $self = shift; + my ($table) = @_; + + my $table_comment = $self->next::method(@_); + + return $table_comment if $table_comment; + + ($table_comment) = $self->dbh->selectrow_array(<<'EOF', {}, $table->name, $table->schema); +SELECT obj_description(oid) +FROM pg_class +WHERE relname=? AND relnamespace=(SELECT oid FROM pg_namespace WHERE nspname=?) +EOF - return $info->{COLUMN_DEF} && $info->{COLUMN_DEF} =~ /\bnextval\(/i; + return $table_comment +} + + +sub _column_comment { + my $self = shift; + my ($table, $column_number, $column_name) = @_; + + my $column_comment = $self->next::method(@_); + + return $column_comment if $column_comment; + + my ($table_oid) = $self->dbh->selectrow_array(<<'EOF', {}, $table->name, $table->schema); +SELECT oid +FROM pg_class +WHERE relname=? AND relnamespace=(SELECT oid FROM pg_namespace WHERE nspname=?) +EOF + + return $self->dbh->selectrow_array('SELECT col_description(?,?)', {}, $table_oid, $column_number); +} + +# Make sure data_type's that don't need it don't have a 'size' column_info, and +# set the correct precision for datetime and varbit types. +sub _columns_info_for { + my $self = shift; + my ($table) = @_; + + my $result = $self->next::method(@_); + + while (my ($col, $info) = each %$result) { + my $data_type = $info->{data_type}; + + # these types are fixed size + # XXX should this be a negative match? + if ($data_type =~ +/^(?:bigint|int8|bigserial|serial8|bool(?:ean)?|box|bytea|cidr|circle|date|double precision|float8|inet|integer|int|int4|line|lseg|macaddr|money|path|point|polygon|real|float4|smallint|int2|serial|serial4|text)\z/i) { + delete $info->{size}; + } +# for datetime types, check if it has a precision or not + elsif ($data_type =~ /^(?:interval|time|timestamp)\b/i) { + if (lc($data_type) eq 'timestamp without time zone') { + $info->{data_type} = 'timestamp'; + } + elsif (lc($data_type) eq 'time without time zone') { + $info->{data_type} = 'time'; + } + + my ($precision) = $self->schema->storage->dbh + ->selectrow_array(<name, $col); +SELECT datetime_precision +FROM information_schema.columns +WHERE table_name = ? and column_name = ? +EOF + + if ($data_type =~ /^time\b/i) { + if ((not $precision) || $precision !~ /^\d/) { + delete $info->{size}; + } + else { + my ($integer_datetimes) = $self->dbh + ->selectrow_array('show integer_datetimes'); + + my $max_precision = + $integer_datetimes =~ /^on\z/i ? 6 : 10; + + if ($precision == $max_precision) { + delete $info->{size}; + } + else { + $info->{size} = $precision; + } + } + } + elsif ((not $precision) || $precision !~ /^\d/ || $precision == 6) { + delete $info->{size}; + } + else { + $info->{size} = $precision; + } + } + elsif ($data_type =~ /^(?:bit(?: varying)?|varbit)\z/i) { + $info->{data_type} = 'varbit' if $data_type =~ /var/i; + + my ($precision) = $self->dbh->selectrow_array(<name, $col); +SELECT character_maximum_length +FROM information_schema.columns +WHERE table_name = ? and column_name = ? +EOF + + $info->{size} = $precision if $precision; + + $info->{size} = 1 if (not $precision) && lc($data_type) eq 'bit'; + } + elsif ($data_type =~ /^(?:numeric|decimal)\z/i && (my $size = $info->{size})) { + $size =~ s/\s*//g; + + my ($scale, $precision) = split /,/, $size; + + $info->{size} = [ $precision, $scale ]; + } + elsif (lc($data_type) eq 'character varying') { + $info->{data_type} = 'varchar'; + + if (not $info->{size}) { + $info->{data_type} = 'text'; + $info->{original}{data_type} = 'varchar'; + } + } + elsif (lc($data_type) eq 'character') { + $info->{data_type} = 'char'; + } + else { + my ($typetype) = $self->schema->storage->dbh + ->selectrow_array(<dbh + ->selectall_arrayref(<{data_type}); +SELECT e.enumlabel +FROM pg_catalog.pg_enum e +JOIN pg_catalog.pg_type t ON t.oid = e.enumtypid +WHERE t.typname = ? +EOF + + $info->{extra}{list} = [ map { $_->[0] } @$typevalues ]; + + # Store its original name in extra for SQLT to pick up. + $info->{extra}{custom_type_name} = $info->{data_type}; + + $info->{data_type} = 'enum'; + + delete $info->{size}; + } + } + +# process SERIAL columns + if (ref($info->{default_value}) eq 'SCALAR' + && ${ $info->{default_value} } =~ /\bnextval\('([^:]+)'/i) { + $info->{is_auto_increment} = 1; + $info->{sequence} = $1; + delete $info->{default_value}; + } + +# alias now() to current_timestamp for deploying to other DBs + if ((eval { lc ${ $info->{default_value} } }||'') eq 'now()') { + # do not use a ref to a constant, that breaks Data::Dump output + ${$info->{default_value}} = 'current_timestamp'; + + my $now = 'now()'; + $info->{original}{default_value} = \$now; + } + +# detect 0/1 for booleans and rewrite + if ($data_type =~ /^bool/i && exists $info->{default_value}) { + if ($info->{default_value} eq '0') { + my $false = 'false'; + $info->{default_value} = \$false; + } + elsif ($info->{default_value} eq '1') { + my $true = 'true'; + $info->{default_value} = \$true; + } + } + } + + return $result; } =head1 SEE ALSO @@ -106,6 +345,15 @@ sub _column_is_auto_increment { L, L, L +=head1 AUTHOR + +See L and L. + +=head1 LICENSE + +This library is free software; you can redistribute it and/or modify it under +the same terms as Perl itself. + =cut 1;