package SQL::Translator::Producer::PostgreSQL;
# -------------------------------------------------------------------
-# $Id: PostgreSQL.pm,v 1.11 2003-06-23 21:47:30 kycl4rk Exp $
+# $Id: PostgreSQL.pm,v 1.22 2004-02-09 23:02:15 kycl4rk Exp $
# -------------------------------------------------------------------
-# Copyright (C) 2003 Ken Y. Clark <kclark@cpan.org>,
-# darren chamberlain <darren@cpan.org>,
-# Chris Mungall <cjm@fruitfly.org>
+# Copyright (C) 2002-4 SQLFairy Authors
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
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: 1.11 $ =~ /(\d+)\.(\d+)/;
+$VERSION = sprintf "%d.%02d", q$Revision: 1.22 $ =~ /(\d+)\.(\d+)/;
$DEBUG = 1 unless defined $DEBUG;
use SQL::Translator::Schema::Constants;
# 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',
# Oracle types
#
number => 'integer',
- char => 'char',
+ char => 'character',
varchar2 => 'character varying',
long => 'text',
CLOB => 'bytea',
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[
UNION UNIQUE USER USING VERBOSE WHEN WHERE
];
-my $max_id_length = 30;
+my $max_id_length = 62;
my %used_identifiers = ();
my %global_names;
my %unreserve;
my $output;
$output .= header_comment unless ($no_comments);
+ my %used_index_names;
+ my @fks;
for my $table ( $schema->get_tables ) {
my $table_name = $table->name or next;
$table_name = mk_name( $table_name, '', undef, 1 );
my $data_type = lc $field->data_type;
my %extra = $field->extra;
my $list = $extra{'list'} || [];
- my $commalist = join ",", @$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' );
+ my $chk_name = mk_name( $table_name.'_'.$field_name, 'chk' );
push @constraint_defs,
- "CONSTRAINT $check_name CHECK ($field_name IN ($commalist))";
+ qq[Constraint "$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;
-# $field_def .= " character varying($len) /* set $commalist */";
$data_type = 'character varying';
}
elsif ( $field->is_auto_increment ) {
- $field_def .= ' serial';
-# $seq_name = mk_name( $table_name.'_'.$field_name, 'sq' );
-# push @sequence_defs, qq[DROP SEQUENCE "$seq_name";];
-# push @sequence_defs, qq[CREATE SEQUENCE "$seq_name";];
+ if ( defined $size[0] && $size[0] > 11 ) {
+ $data_type = 'bigserial';
+ }
+ else {
+ $data_type = 'serial';
+ }
+ undef @size;
}
else {
$data_type = defined $translate{ $data_type } ?
$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';
+ }
+ }
+
+ #
+ # PG doesn't need a size for integers or text
+ #
+ 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 ) . ')';
+ $field_def .= '(' . join( ',', @size ) . ')';
}
#
- # Default value
+ # Default value -- disallow for timestamps
#
- my $default = $field->default_value;
+ 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 )
my $idx_name_default;
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/\(.+\)//; $_ }
$index->fields;
next unless @fields;
+ my $def_start = qq[Constraint "$name" ];
if ( $type eq PRIMARY_KEY ) {
- $name ||= mk_name( $table_name, 'pk' );
- push @constraint_defs, 'CONSTRAINT '.$name.' PRIMARY KEY '.
- '(' . join( ', ', @fields ) . ')';
+ push @constraint_defs, "${def_start}PRIMARY KEY ".
+ '("' . join( '", "', @fields ) . '")';
}
elsif ( $type eq UNIQUE ) {
- $name ||= mk_name(
- $table_name, $name || ++$idx_name_default
- );
- push @constraint_defs, 'CONSTRAINT ' . $name . ' UNIQUE ' .
- '(' . join( ', ', @fields ) . ')';
+ push @constraint_defs, "${def_start}UNIQUE " .
+ '("' . join( '", "', @fields ) . '")';
}
elsif ( $type eq NORMAL ) {
- $name ||= mk_name(
- $table_name, $name || ++$idx_name_default
- );
push @index_defs,
- qq[CREATE INDEX "$name" on $table_name_ur (].
- join( ', ', @fields ).
- ');';
+ 'CREATE INDEX "' . $name . "\" on $table_name_ur (".
+ join( ', ', map { qq["$_"] } @fields ).
+ ');'
+ ;
}
else {
warn "Unknown index type ($type) on table $table_name.\n"
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 unless @fields;
+ next if !@fields && $c->type ne CHECK_C;
+
+ my $def_start = $name ? qq[Constraint "$name" ] : '';
if ( $c->type eq PRIMARY_KEY ) {
- $name ||= mk_name( $table_name, 'pk' );
- push @constraint_defs, "CONSTRAINT $name PRIMARY KEY ".
- '(' . join( ', ', @fields ) . ')';
+ push @constraint_defs, "${def_start}PRIMARY KEY ".
+ '("' . join( '", "', @fields ) . '")';
}
elsif ( $c->type eq UNIQUE ) {
- $name ||= mk_name(
- $table_name, $name || ++$c_name_default
- );
- push @constraint_defs, "CONSTRAINT $name UNIQUE " .
- '(' . join( ', ', @fields ) . ')';
+ $name = next_unused_name($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 = join(' ',
- map { $_ || () } 'FOREIGN KEY', $c->name
- );
-
- $def .= ' (' . join( ', ', @fields ) . ')';
-
- $def .= ' REFERENCES ' . $c->reference_table;
+ my $def .= "ALTER TABLE $table_name ADD FOREIGN KEY (" .
+ join( ', ', map { qq["$_"] } @fields ) . ')' .
+ "\n REFERENCES " . $c->reference_table;
if ( @rfields ) {
- $def .= ' (' . join( ', ', @rfields ) . ')';
+ $def .= ' ("' . join( '", "', @rfields ) . '")';
}
if ( $c->match_type ) {
$def .= ' ON UPDATE '.join( ' ', $c->on_update );
}
- push @constraint_defs, $def;
+ push @fks, "$def;";
}
}
);
}
+ 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";
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;
# -------------------------------------------------------------------
=pod
+=head1 SEE ALSO
+
+SQL::Translator, SQL::Translator::Producer::Oracle.
+
=head1 AUTHOR
-Ken Y. Clark E<lt>kclark@cpan.orgE<gt>
+Ken Y. Clark E<lt>kclark@cpan.orgE<gt>.
=cut
projects / dbsrgits/SQL-Translator.git / blobdiff