X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FSQL%2FTranslator%2FProducer%2FPostgreSQL.pm;h=acb91d59918de6acafae15bb6acb082ee2969371;hb=63c988edd90d9a126b5452d41f3a19cc47bb9748;hp=f448b713e7b44ed6ab4206d8e3b16c75cf407ee5;hpb=d8dcdb7a05834701200e2fca9a9a46900cdf1888;p=dbsrgits%2FSQL-Translator.git diff --git a/lib/SQL/Translator/Producer/PostgreSQL.pm b/lib/SQL/Translator/Producer/PostgreSQL.pm index f448b71..acb91d5 100644 --- a/lib/SQL/Translator/Producer/PostgreSQL.pm +++ b/lib/SQL/Translator/Producer/PostgreSQL.pm @@ -1,7 +1,7 @@ package SQL::Translator::Producer::PostgreSQL; # ------------------------------------------------------------------- -# $Id: PostgreSQL.pm,v 1.7 2003-03-07 16:08:22 kycl4rk Exp $ +# $Id: PostgreSQL.pm,v 1.20 2003-10-15 19:07:13 kycl4rk Exp $ # ------------------------------------------------------------------- # Copyright (C) 2003 Ken Y. Clark , # darren chamberlain , @@ -26,13 +26,25 @@ package SQL::Translator::Producer::PostgreSQL; SQL::Translator::Producer::PostgreSQL - PostgreSQL producer for SQL::Translator +=head1 SYNOPSIS + + my $t = SQL::Translator->new( parser => '...', producer => 'PostgreSQL' ); + $t->translate; + +=head1 DESCRIPTION + +Creates a DDL suitable for PostgreSQL. Very heavily based on the Oracle +producer. + =cut use strict; use vars qw[ $DEBUG $WARN $VERSION ]; -$VERSION = sprintf "%d.%02d", q$Revision: 1.7 $ =~ /(\d+)\.(\d+)/; +$VERSION = sprintf "%d.%02d", q$Revision: 1.20 $ =~ /(\d+)\.(\d+)/; $DEBUG = 1 unless defined $DEBUG; +use SQL::Translator::Schema::Constants; +use SQL::Translator::Utils qw(header_comment); use Data::Dumper; my %translate = ( @@ -40,14 +52,14 @@ my %translate = ( # MySQL types # bigint => 'bigint', - double => 'double precision', - decimal => 'decimal', - float => 'double precision', + double => 'numeric', + decimal => 'numeric', + float => 'numeric', int => 'integer', mediumint => 'integer', smallint => 'smallint', tinyint => 'smallint', - char => 'char', + char => 'character', varchar => 'character varying', longtext => 'text', mediumtext => 'text', @@ -69,7 +81,7 @@ my %translate = ( # Oracle types # number => 'integer', - char => 'char', + char => 'character', varchar2 => 'character varying', long => 'text', CLOB => 'bytea', @@ -83,11 +95,11 @@ my %translate = ( varchar => 'character varying', datetime => 'timestamp', text => 'text', - real => 'double precision', + real => 'numeric', comment => 'text', bit => 'bit', tinyint => 'smallint', - float => 'double precision', + float => 'numeric', ); my %reserved = map { $_, 1 } qw[ @@ -157,30 +169,24 @@ and table_constraint is: # ------------------------------------------------------------------- sub produce { - my ( $translator, $data ) = @_; - $DEBUG = $translator->debug; - $WARN = $translator->show_warnings; - my $no_comments = $translator->no_comments; - my $add_drop_table = $translator->add_drop_table; + my $translator = shift; + $DEBUG = $translator->debug; + $WARN = $translator->show_warnings; + my $no_comments = $translator->no_comments; + my $add_drop_table = $translator->add_drop_table; + my $schema = $translator->schema; my $output; - unless ( $no_comments ) { - $output .= sprintf - "--\n-- Created by %s\n-- Created on %s\n--\n\n", - __PACKAGE__, scalar localtime; - } + $output .= header_comment unless ($no_comments); + my %used_index_names; - for my $table ( - map { $_->[1] } - sort { $a->[0] <=> $b->[0] } - map { [ $_->{'order'}, $_ ] } - values %$data - ) { - my $table_name = $table->{'table_name'}; + my @fks; + for my $table ( $schema->get_tables ) { + my $table_name = $table->name or next; $table_name = mk_name( $table_name, '', undef, 1 ); my $table_name_ur = unreserve($table_name); - my ( @comments, @field_decs, @sequence_decs, @constraints ); + my ( @comments, @field_defs, @sequence_defs, @constraint_defs ); push @comments, "--\n-- Table: $table_name_ur\n--" unless $no_comments; @@ -188,148 +194,233 @@ sub produce { # Fields # my %field_name_scope; - for my $field ( - map { $_->[1] } - sort { $a->[0] <=> $b->[0] } - map { [ $_->{'order'}, $_ ] } - values %{ $table->{'fields'} } - ) { + for my $field ( $table->get_fields ) { my $field_name = mk_name( - $field->{'name'}, '', \%field_name_scope, 1 + $field->name, '', \%field_name_scope, 1 ); my $field_name_ur = unreserve( $field_name, $table_name ); - my $field_str = qq["$field_name_ur"]; + my $field_def = qq["$field_name_ur"]; # # Datatype # - my $data_type = lc $field->{'data_type'}; - my $list = $field->{'list'} || []; - my $commalist = join ",", @$list; + my @size = $field->size; + my $data_type = lc $field->data_type; + my %extra = $field->extra; + my $list = $extra{'list'} || []; + # todo deal with embedded quotes + my $commalist = join( ', ', map { qq['$_'] } @$list ); my $seq_name; if ( $data_type eq 'enum' ) { my $len = 0; $len = ($len < length($_)) ? length($_) : $len for (@$list); - my $check_name = mk_name( $table_name.'_'.$field_name, 'chk' ); - push @constraints, - "CONSTRAINT $check_name CHECK ($field_name IN ($commalist))"; - $field_str .= " character varying($len)"; + my $chk_name = mk_name( $table_name.'_'.$field_name, 'chk' ); + push @constraint_defs, + qq[Constraint "$chk_name" CHECK ("$field_name" ]. + qq[IN ($commalist))]; + $data_type = 'character varying'; } elsif ( $data_type eq 'set' ) { - # XXX add a CHECK constraint maybe - # (trickier and slower, than enum :) - my $len = length $commalist; - $field_str .= " character varying($len) /* set $commalist */"; + $data_type = 'character varying'; } - elsif ( $field->{'is_auto_inc'} ) { - $field_str .= ' serial'; - $seq_name = mk_name( $table_name.'_'.$field_name, 'sq' ); - push @sequence_decs, qq[DROP SEQUENCE "$seq_name";]; - push @sequence_decs, qq[CREATE SEQUENCE "$seq_name";]; + elsif ( $field->is_auto_increment ) { + if ( defined $size[0] && $size[0] > 11 ) { + $data_type = 'bigserial'; + } + else { + $data_type = 'serial'; + } + undef @size; } else { $data_type = defined $translate{ $data_type } ? $translate{ $data_type } : - die "Unknown datatype: $data_type\n"; - $field_str .= ' '.$data_type; - if ( $data_type =~ /(char|varbit|numeric|decimal)/i ) { - $field_str .= '('.join(',', @{ $field->{'size'} }).')' - if @{ $field->{'size'} || [] }; + $data_type; + } + + if ( $data_type =~ /timestamp/i ) { + if ( defined $size[0] && $size[0] > 6 ) { + $size[0] = 6; + } + } + + if ( $data_type eq 'integer' ) { + if ( defined $size[0] ) { + if ( $size[0] > 10 ) { + $data_type = 'bigint'; + } + elsif ( $size[0] < 5 ) { + $data_type = 'smallint'; + } + else { + $data_type = 'integer'; + } + } + else { + $data_type = 'integer'; } } # - # Default value + # PG doesn't need a size for integers or text # - if ( defined $field->{'default'} ) { - $field_str .= sprintf( ' DEFAULT %s', - ( $field->{'is_auto_inc'} && $seq_name ) - ? qq[nextval('"$seq_name"'::text)] : - ( $field->{'default'} =~ m/null/i ) - ? 'NULL' : - "'".$field->{'default'}."'" - ); + undef @size if $data_type =~ m/(integer|smallint|bigint|text)/; + + $field_def .= " $data_type"; + + if ( defined $size[0] && $size[0] > 0 ) { + $field_def .= '(' . join( ',', @size ) . ')'; } # - # Not null constraint + # Default value -- disallow for timestamps # - unless ( $field->{'null'} ) { - my $constraint_name = mk_name($field_name_ur, 'nn'); -# $field_str .= ' CONSTRAINT '.$constraint_name.' NOT NULL'; - $field_str .= ' NOT NULL'; + my $default = $data_type =~ /(timestamp|date)/i + ? undef : $field->default_value; + if ( defined $default ) { + $field_def .= sprintf( ' DEFAULT %s', + ( $field->is_auto_increment && $seq_name ) + ? qq[nextval('"$seq_name"'::text)] : + ( $default =~ m/null/i ) ? 'NULL' : "'$default'" + ); } # - # Primary key + # Not null constraint # -# if ( $field->{'is_primary_key'} ) { -# my $constraint_name = mk_name($field_name_ur, 'pk'); -# $field_str .= ' CONSTRAINT '.$constraint_name.' PRIMARY KEY'; -# } + $field_def .= ' NOT NULL' unless $field->is_nullable; - push @field_decs, $field_str; + push @field_defs, $field_def; } # # Index Declarations # - my @index_decs = (); + my @index_defs = (); my $idx_name_default; - for my $index ( @{ $table->{'indices'} } ) { - my $index_name = $index->{'name'} || ''; - my $index_type = $index->{'type'} || 'normal'; + for my $index ( $table->get_indices ) { + my $name = $index->name || ''; + if ( $name ) { + $name = next_unused_name($name, \%used_index_names); + $used_index_names{$name} = $name; + } + + my $type = $index->type || NORMAL; my @fields = map { $_ =~ s/\(.+\)//; $_ } map { unreserve( $_, $table_name ) } - @{ $index->{'fields'} }; + $index->fields; next unless @fields; - if ( $index_type eq 'primary_key' ) { - $index_name = mk_name( $table_name, 'pk' ); - push @constraints, 'CONSTRAINT '.$index_name.' PRIMARY KEY '. - '(' . join( ', ', @fields ) . ')'; + my $def_start = qq[Constraint "$name" ]; + if ( $type eq PRIMARY_KEY ) { + push @constraint_defs, "${def_start}PRIMARY KEY ". + '("' . join( '", "', @fields ) . '")'; } - elsif ( $index_type eq 'unique' ) { - $index_name = mk_name( - $table_name, $index_name || ++$idx_name_default - ); - push @constraints, 'CONSTRAINT ' . $index_name . ' UNIQUE ' . - '(' . join( ', ', @fields ) . ')'; + elsif ( $type eq UNIQUE ) { + push @constraint_defs, "${def_start}UNIQUE " . + '("' . join( '", "', @fields ) . '")'; } - elsif ( $index_type eq 'normal' ) { - $index_name = mk_name( - $table_name, $index_name || ++$idx_name_default - ); - push @index_decs, - qq[CREATE INDEX "$index_name" on $table_name_ur (]. - join( ', ', @fields ). - ');'; + elsif ( $type eq NORMAL ) { + push @index_defs, + 'CREATE INDEX "' . $name . "\" on $table_name_ur (". + join( ', ', map { qq["$_"] } @fields ). + ');' + ; } else { - warn "Unknown index type ($index_type) on table $table_name.\n" + warn "Unknown index type ($type) on table $table_name.\n" if $WARN; } } + # + # Table constraints + # + my $c_name_default; + for my $c ( $table->get_constraints ) { + my $name = $c->name || ''; + if ( $name ) { + $name = next_unused_name($name, \%used_index_names); + $used_index_names{$name} = $name; + } + + my @fields = + map { $_ =~ s/\(.+\)//; $_ } + map { unreserve( $_, $table_name ) } + $c->fields; + + my @rfields = + map { $_ =~ s/\(.+\)//; $_ } + map { unreserve( $_, $table_name ) } + $c->reference_fields; + + next if !@fields && $c->type ne CHECK_C; + + my $def_start = $name ? qq[Constraint "$name" ] : ''; + if ( $c->type eq PRIMARY_KEY ) { + push @constraint_defs, "${def_start}PRIMARY KEY ". + '("' . join( '", "', @fields ) . '")'; + } + elsif ( $c->type eq UNIQUE ) { + $name = next_unused_name($name, \%used_index_names); + $used_index_names{$name} = $name; + push @constraint_defs, "${def_start}UNIQUE " . + '("' . join( '", "', @fields ) . '")'; + } + elsif ( $c->type eq CHECK_C ) { + my $expression = $c->expression; + push @constraint_defs, "${def_start}CHECK ($expression)"; + } + elsif ( $c->type eq FOREIGN_KEY ) { + my $def .= "ALTER TABLE $table_name ADD FOREIGN KEY (" . + join( ', ', map { qq["$_"] } @fields ) . ')' . + "\n REFERENCES " . $c->reference_table; + + if ( @rfields ) { + $def .= ' ("' . join( '", "', @rfields ) . '")'; + } + + if ( $c->match_type ) { + $def .= ' MATCH ' . + ( $c->match_type =~ /full/i ) ? 'FULL' : 'PARTIAL'; + } + + if ( $c->on_delete ) { + $def .= ' ON DELETE '.join( ' ', $c->on_delete ); + } + + if ( $c->on_update ) { + $def .= ' ON UPDATE '.join( ' ', $c->on_update ); + } + + push @fks, "$def;"; + } + } + my $create_statement; $create_statement = qq[DROP TABLE "$table_name_ur";\n] if $add_drop_table; $create_statement .= qq[CREATE TABLE "$table_name_ur" (\n]. - join( ",\n", map { " $_" } @field_decs, @constraints ). + join( ",\n", map { " $_" } @field_defs, @constraint_defs ). "\n);" ; $output .= join( "\n\n", @comments, - @sequence_decs, + @sequence_defs, $create_statement, - @index_decs, + @index_defs, '' ); } + if ( @fks ) { + $output .= "--\n-- Foreign Key Definitions\n--\n\n" unless $no_comments; + $output .= join( "\n\n", @fks ); + } + if ( $WARN ) { if ( %truncated ) { warn "Truncated " . keys( %truncated ) . " names:\n"; @@ -348,7 +439,10 @@ sub produce { # ------------------------------------------------------------------- sub mk_name { - my ($basename, $type, $scope, $critical) = @_; + my $basename = shift || ''; + my $type = shift || ''; + my $scope = shift || ''; + my $critical = shift || ''; my $basename_orig = $basename; my $max_name = $type ? $max_id_length - (length($type) + 1) @@ -383,11 +477,13 @@ sub mk_name { # ------------------------------------------------------------------- sub unreserve { - my ( $name, $schema_obj_name ) = @_; + my $name = shift || ''; + my $schema_obj_name = shift || ''; + my ( $suffix ) = ( $name =~ s/(\W.*)$// ) ? $1 : ''; # also trap fields that don't begin with a letter - return $_[0] if !$reserved{ uc $name } && $name =~ /^[a-z]/i; + return $name if !$reserved{ uc $name } && $name =~ /^[a-z]/i; if ( $schema_obj_name ) { ++$unreserve{"$schema_obj_name.$name"}; @@ -400,6 +496,27 @@ sub unreserve { return $unreserve.$suffix; } +# ------------------------------------------------------------------- +sub next_unused_name { + my $name = shift || ''; + my $used_names = shift || ''; + + my %used_names = %$used_names; + + if ( !defined($used_names{$name}) ) { + $used_names{$name} = $name; + return $name; + } + + my $i = 2; + while ( defined($used_names{$name . $i}) ) { + ++$i; + } + $name .= $i; + $used_names{$name} = $name; + return $name; +} + 1; # ------------------------------------------------------------------- @@ -410,8 +527,12 @@ sub unreserve { =pod +=head1 SEE ALSO + +SQL::Translator, SQL::Translator::Producer::Oracle. + =head1 AUTHOR -Ken Y. Clark Ekclark@cpan.orgE +Ken Y. Clark Ekclark@cpan.orgE. =cut