X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FDBIx%2FClass%2FSchema%2FLoader%2FDBI%2FPg.pm;h=2a95245f8b627a4dd67caef3b5fad4358cd8e349;hb=306bf770bf08b06f92863808b1938f2fc704acb0;hp=120256b05c27b0ddecaa2dc465c1b21fa2e4c9e1;hpb=5afd3e723f5c9644e67f9b623b069f870e94fdc9;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 120256b..2a95245 100644 --- a/lib/DBIx/Class/Schema/Loader/DBI/Pg.pm +++ b/lib/DBIx/Class/Schema/Loader/DBI/Pg.pm @@ -2,32 +2,19 @@ package DBIx::Class::Schema::Loader::DBI::Pg; 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 Class::C3; +use base 'DBIx::Class::Schema::Loader::DBI::Component::QuotedDefault'; +use mro 'c3'; -our $VERSION = '0.06001'; +our $VERSION = '0.07047'; =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 @@ -35,7 +22,82 @@ 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'); +} + +my %pg_rules = ( + a => 'NO ACTION', + r => 'RESTRICT', + c => 'CASCADE', + n => 'SET NULL', + d => 'SET DEFAULT', +); + +sub _table_fk_info { + my ($self, $table) = @_; + + my $sth = $self->dbh->prepare_cached(<<"EOF"); + select constr.conname, to_ns.nspname, to_class.relname, from_col.attname, to_col.attname, + constr.confdeltype, constr.confupdtype, constr.condeferrable + from pg_catalog.pg_constraint constr + join pg_catalog.pg_namespace from_ns on constr.connamespace = from_ns.oid + join pg_catalog.pg_class from_class on constr.conrelid = from_class.oid and from_class.relnamespace = from_ns.oid + join pg_catalog.pg_class to_class on constr.confrelid = to_class.oid + join pg_catalog.pg_namespace to_ns on to_class.relnamespace = to_ns.oid + -- can't do unnest() until 8.4, so join against a series table instead + join pg_catalog.generate_series(1, pg_catalog.current_setting('max_index_keys')::integer) colnum(i) + on colnum.i <= pg_catalog.array_upper(constr.conkey,1) + join pg_catalog.pg_attribute to_col + on to_col.attrelid = constr.confrelid + and to_col.attnum = constr.confkey[colnum.i] + join pg_catalog.pg_attribute from_col + on from_col.attrelid = constr.conrelid + and from_col.attnum = constr.conkey[colnum.i] + where from_ns.nspname = ? + and from_class.relname = ? + and from_class.relkind = 'r' + and constr.contype = 'f' + order by constr.conname, colnum.i +EOF + + $sth->execute($table->schema, $table->name); + + my %rels; + + while (my ($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 => $pg_rules{$delete_rule}, + on_update => $pg_rules{$update_rule}, + is_deferrable => $is_deferrable, + }; + } + + return [ map { $rels{$_} } sort keys %rels ]; } @@ -47,35 +109,34 @@ 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 JOIN pg_catalog.pg_class c ON c.oid = x.indrelid JOIN pg_catalog.pg_class i ON i.oid = x.indexrelid - JOIN pg_catalog.pg_constraint con ON con.conname = i.relname - LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace + JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace WHERE x.indisunique = 't' AND + x.indpred IS NULL AND c.relkind = 'r' AND i.relkind = 'i' AND - con.contype = 'u' AND n.nspname = ? AND - c.relname = ?} + c.relname = ? + ORDER BY i.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+//; @@ -85,13 +146,11 @@ 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) { - warn "Failed to parse UNIQUE constraint $indexname on $table"; - } - else { + # skip indexes with missing column names (e.g. expression indexes) + if(@col_names == @col_nums) { push(@uniqs, [ $indexname => \@col_names ]); } } @@ -100,29 +159,36 @@ sub _table_uniq_info { } sub _table_comment { - my ( $self, $table ) = @_; - my ($table_comment) = $self->schema->storage->dbh->selectrow_array( - q{SELECT obj_description(oid) - FROM pg_class - WHERE relname=? AND relnamespace=( - SELECT oid FROM pg_namespace WHERE nspname=?) - }, undef, $table, $self->db_schema - ); + 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 pg_catalog.obj_description(oid) +FROM pg_catalog.pg_class +WHERE relname=? AND relnamespace=(SELECT oid FROM pg_catalog.pg_namespace WHERE nspname=?) +EOF + return $table_comment } sub _column_comment { - my ( $self, $table, $column_number ) = @_; - my ($table_oid) = $self->schema->storage->dbh->selectrow_array( - q{SELECT oid - FROM pg_class - WHERE relname=? AND relnamespace=( - SELECT oid FROM pg_namespace WHERE nspname=?) - }, undef, $table, $self->db_schema - ); - return $self->schema->storage->dbh->selectrow_array('SELECT col_description(?,?)', undef, $table_oid, - $column_number ); + my $self = shift; + my ($table, $column_number, $column_name) = @_; + + my $column_comment = $self->next::method(@_); + + return $column_comment if $column_comment; + + return $self->dbh->selectrow_array(<<'EOF', {}, $column_number, $table->name, $table->schema); +SELECT pg_catalog.col_description(oid, ?) +FROM pg_catalog.pg_class +WHERE relname=? AND relnamespace=(SELECT oid FROM pg_catalog.pg_namespace WHERE nspname=?) +EOF } # Make sure data_type's that don't need it don't have a 'size' column_info, and @@ -133,86 +199,173 @@ sub _columns_info_for { my $result = $self->next::method(@_); - foreach my $col (keys %$result) { - my $data_type = $result->{$col}{data_type}; + 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|bit|boolean|bool|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 $result->{$col}{size}; +/^(?: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(<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 $result->{$col}{size}; + if ((not defined $precision) || $precision !~ /^\d/) { + delete $info->{size}; } else { - my ($integer_datetimes) = $self->schema->storage->dbh + my ($integer_datetimes) = $self->dbh ->selectrow_array('show integer_datetimes'); my $max_precision = $integer_datetimes =~ /^on\z/i ? 6 : 10; if ($precision == $max_precision) { - delete $result->{$col}{size}; + delete $info->{size}; } else { - $result->{$col}{size} = $precision; + $info->{size} = $precision; } } } - elsif ((not $precision) || $precision !~ /^\d/ || $precision == 6) { - delete $result->{$col}{size}; + elsif ((not defined $precision) || $precision !~ /^\d/ || $precision == 6) { + delete $info->{size}; } else { - $result->{$col}{size} = $precision; + $info->{size} = $precision; } } - elsif ($data_type =~ /^(?:bit varying|varbit)\z/i) { - my ($precision) = $self->schema->storage->dbh - ->selectrow_array(<{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 - $result->{$col}{size} = $precision; + $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 = $result->{$col}{size})) { + elsif ($data_type =~ /^(?:numeric|decimal)\z/i && (my $size = $info->{size})) { $size =~ s/\s*//g; my ($scale, $precision) = split /,/, $size; - $result->{$col}{size} = [ $precision, $scale ]; + $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->{pg_server_version} >= 90100 ? 'enumsortorder' : 'oid'; + $info->{extra}{list} = $self->dbh + ->selectcol_arrayref(<{data_type}); +SELECT e.enumlabel +FROM pg_catalog.pg_enum e +JOIN pg_catalog.pg_type t ON t.oid = e.enumtypid +WHERE t.typname = ? +ORDER BY e.$order_column +EOF + + # Store its original name in extra for SQLT to pick up. + $info->{extra}{custom_type_name} = $info->{data_type}; + + $info->{data_type} = 'enum'; + + delete $info->{size}; + } } # process SERIAL columns - if (ref($result->{$col}{default_value}) eq 'SCALAR' && ${ $result->{$col}{default_value} } =~ /\bnextval\(['"](\w+)/i) { - $result->{$col}{is_auto_increment} = 1; - $result->{$col}{sequence} = $1; - delete $result->{$col}{default_value}; + 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 $result; } +sub _view_definition { + my ($self, $view) = @_; + + my $def = $self->schema->storage->dbh->selectrow_array(<<'EOF', {}, $view->schema, $view->name); +SELECT pg_catalog.pg_get_viewdef(oid) +FROM pg_catalog.pg_class +WHERE relnamespace = (SELECT OID FROM pg_catalog.pg_namespace WHERE nspname = ?) +AND relname = ? +EOF + # The definition is returned as a complete statement including the + # trailing semicolon, but that's not allowed in CREATE VIEW, so + # strip it out + $def =~ s/\s*;\s*\z//; + return $def; +} + =head1 SEE ALSO L, L, L -=head1 AUTHOR +=head1 AUTHORS -See L and L. +See L. =head1 LICENSE