package SQL::Translator::Producer::PostgreSQL;
# -------------------------------------------------------------------
-# $Id: PostgreSQL.pm,v 1.2 2002-11-22 03:03:40 kycl4rk Exp $
+# $Id: PostgreSQL.pm,v 1.3 2002-11-26 03:59:58 kycl4rk Exp $
# -------------------------------------------------------------------
# Copyright (C) 2002 Ken Y. Clark <kclark@cpan.org>,
# darren chamberlain <darren@cpan.org>
# 02111-1307 USA
# -------------------------------------------------------------------
+=head1 NAME
+
+SQL::Translator::Producer::PostgreSQL - PostgreSQL producer for SQL::Translator
+
+=cut
+
use strict;
-use vars qw($VERSION $DEBUG);
-$VERSION = sprintf "%d.%02d", q$Revision: 1.2 $ =~ /(\d+)\.(\d+)/;
+use vars qw[ $DEBUG $WARN $VERSION ];
+$VERSION = sprintf "%d.%02d", q$Revision: 1.3 $ =~ /(\d+)\.(\d+)/;
$DEBUG = 1 unless defined $DEBUG;
use Data::Dumper;
#
# Oracle types
#
+ number => 'integer',
+ char => 'char',
+ varchar2 => 'varchar',
+ long => 'text',
+ CLOB => 'bytea',
+ date => 'date',
+
+ #
+ # Sybase types
+ #
+ int => 'integer',
+ money => 'money',
+ varchar => 'varchar',
+ datetime => 'timestamp',
+ text => 'text',
+ real => 'double precision',
+ comment => 'text',
+ bit => 'bit',
+ tinyint => 'smallint',
+ float => 'double precision',
);
+my %reserved = map { $_, 1 } qw[
+ ALL ANALYSE ANALYZE AND ANY AS ASC
+ BETWEEN BINARY BOTH
+ CASE CAST CHECK COLLATE COLUMN CONSTRAINT CROSS
+ CURRENT_DATE CURRENT_TIME CURRENT_TIMESTAMP CURRENT_USER
+ DEFAULT DEFERRABLE DESC DISTINCT DO
+ ELSE END EXCEPT
+ FALSE FOR FOREIGN FREEZE FROM FULL
+ GROUP HAVING
+ ILIKE IN INITIALLY INNER INTERSECT INTO IS ISNULL
+ JOIN LEADING LEFT LIKE LIMIT
+ NATURAL NEW NOT NOTNULL NULL
+ OFF OFFSET OLD ON ONLY OR ORDER OUTER OVERLAPS
+ PRIMARY PUBLIC REFERENCES RIGHT
+ SELECT SESSION_USER SOME TABLE THEN TO TRAILING TRUE
+ UNION UNIQUE USER USING VERBOSE WHEN WHERE
+];
-sub import {
- warn "loading " . __PACKAGE__ . "...\n";
-}
+my $max_id_length = 30;
+my %used_identifiers = ();
+my %global_names;
+my %unreserve;
+my %truncated;
+
+=pod
+
+=head1 PostgreSQL Create Table Syntax
+
+ CREATE [ [ LOCAL ] { TEMPORARY | TEMP } ] TABLE table_name (
+ { column_name data_type [ DEFAULT default_expr ] [ column_constraint [, ... ] ]
+ | table_constraint } [, ... ]
+ )
+ [ INHERITS ( parent_table [, ... ] ) ]
+ [ WITH OIDS | WITHOUT OIDS ]
+
+where column_constraint is:
+
+ [ CONSTRAINT constraint_name ]
+ { NOT NULL | NULL | UNIQUE | PRIMARY KEY |
+ CHECK (expression) |
+ REFERENCES reftable [ ( refcolumn ) ] [ MATCH FULL | MATCH PARTIAL ]
+ [ ON DELETE action ] [ ON UPDATE action ] }
+ [ DEFERRABLE | NOT DEFERRABLE ] [ INITIALLY DEFERRED | INITIALLY IMMEDIATE ]
+
+and table_constraint is:
+
+ [ CONSTRAINT constraint_name ]
+ { UNIQUE ( column_name [, ... ] ) |
+ PRIMARY KEY ( column_name [, ... ] ) |
+ CHECK ( expression ) |
+ FOREIGN KEY ( column_name [, ... ] ) REFERENCES reftable [ ( refcolumn [, ... ] ) ]
+ [ MATCH FULL | MATCH PARTIAL ] [ ON DELETE action ] [ ON UPDATE action ] }
+ [ DEFERRABLE | NOT DEFERRABLE ] [ INITIALLY DEFERRED | INITIALLY IMMEDIATE ]
+
+=cut
+# -------------------------------------------------------------------
sub produce {
my ( $translator, $data ) = @_;
- debug("Beginning production\n");
- my $create = sprintf "--\n-- Created by %s\n-- Created on %s\n-- \n\n",
- __PACKAGE__, scalar localtime;
-
- for my $table ( keys %{ $data } ) {
- debug( "Looking at table '$table'\n" );
- my $table_data = $data->{$table};
- my @fields = sort {
- $table_data->{'fields'}->{$a}->{'order'}
- <=>
- $table_data->{'fields'}->{$b}->{'order'}
- } keys %{ $table_data->{'fields'} };
-
- $create .= "--\n-- Table: $table\n--\n";
- $create .= "CREATE TABLE $table (\n";
+ $DEBUG = $translator->debug;
+ $WARN = $translator->show_warnings;
+ my $no_comments = $translator->no_comments;
+ my $add_drop_table = $translator->add_drop_table;
+
+ my $create;
+ unless ( $no_comments ) {
+ $create .= sprintf
+ "--\n-- Created by %s\n-- Created on %s\n--\n\n",
+ __PACKAGE__, scalar localtime;
+ }
+
+ for my $table (
+ map { $_->[1] }
+ sort { $a->[0] <=> $b->[0] }
+ map { [ $_->{'order'}, $_ ] }
+ values %$data
+ ) {
+ my $table_name = $table->{'table_name'};
+ my @fields =
+ map { $_->[1] }
+ sort { $a->[0] <=> $b->[0] }
+ map { [ $_->{'order'}, $_ ] }
+ values %{ $table->{'fields'} };
+
+ $create .= "--\n-- Table: $table_name\n--\n" unless $no_comments;
+ $create = "DROP TABLE $table_name;\n" if $add_drop_table;
+ $create .= "CREATE TABLE $table_name (\n";
#
# Fields
#
+ my %field_name_scope;
my @field_statements;
for my $field ( @fields ) {
- debug("Looking at field '$field'\n");
- my $field_data = $table_data->{'fields'}->{ $field };
- my @fdata = ("", $field);
+ my @fdata = ("", $field);
+
+ my $field_name = mk_name(
+ $field->{'name'}, '', \%field_name_scope, 1
+ );
+ my $field_name_ur = unreserve( $field_name, $table_name );
+ my $field_str = $field_name_ur;
# data type and size
push @fdata, sprintf "%s%s",
- $field_data->{'data_type'},
- ( defined $field_data->{'size'} )
- ? "($field_data->{'size'})" : '';
+ $field->{'data_type'},
+ ( defined $field->{'size'} )
+ ? "($field->{'size'})" : '';
# Null?
- push @fdata, "NOT NULL" unless $field_data->{'null'};
+ push @fdata, "NOT NULL" unless $field->{'null'};
# Default? XXX Need better quoting!
- my $default = $field_data->{'default'};
+ my $default = $field->{'default'};
if ( defined $default ) {
push @fdata, "DEFAULT '$default'";
# if (int $default eq "$default") {
}
# auto_increment?
- push @fdata, "auto_increment" if $field_data->{'is_auto_inc'};
+ push @fdata, "auto_increment" if $field->{'is_auto_inc'};
# primary key?
- push @fdata, "PRIMARY KEY" if $field_data->{'is_primary_key'};
+ push @fdata, "PRIMARY KEY" if $field->{'is_primary_key'};
push @field_statements, join( " ", @fdata );
#
# Other keys
#
- my @indices = @{ $table_data->{'indices'} || [] };
+ my @indices = @{ $table->{'indices'} || [] };
for ( my $i = 0; $i <= $#indices; $i++ ) {
$create .= ",\n";
my $key = $indices[$i];
return $create;
}
-use Carp;
-sub debug {
- if ( $DEBUG ) {
- map { carp "[" . __PACKAGE__ . "] $_" } @_;
+# -------------------------------------------------------------------
+sub mk_name {
+ my ($basename, $type, $scope, $critical) = @_;
+ my $basename_orig = $basename;
+ my $max_name = $max_id_length - (length($type) + 1);
+ $basename = substr( $basename, 0, $max_name )
+ if length( $basename ) > $max_name;
+ my $name = $type ? "${type}_$basename" : $basename;
+
+ if ( $basename ne $basename_orig and $critical ) {
+ my $show_type = $type ? "+'$type'" : "";
+ warn "Truncating '$basename_orig'$show_type to $max_id_length ",
+ "character limit to make '$name'\n" if $WARN;
+ $truncated{ $basename_orig } = $name;
+ }
+
+ $scope ||= \%global_names;
+ if ( my $prev = $scope->{ $name } ) {
+ my $name_orig = $name;
+ $name .= sprintf( "%02d", ++$prev );
+ substr($name, $max_id_length - 3) = "00"
+ if length( $name ) > $max_id_length;
+
+ warn "The name '$name_orig' has been changed to ",
+ "'$name' to make it unique.\n" if $WARN;
+
+ $scope->{ $name_orig }++;
}
+
+ $scope->{ $name }++;
+ return $name;
+}
+
+# -------------------------------------------------------------------
+sub unreserve {
+ my ( $name, $schema_obj_name ) = @_;
+ 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;
+
+ if ( $schema_obj_name ) {
+ ++$unreserve{"$schema_obj_name.$name"};
+ }
+ else {
+ ++$unreserve{"$name (table name)"};
+ }
+
+ my $unreserve = sprintf '%s_', $name;
+ return $unreserve.$suffix;
}
1;
-__END__
-=head1 NAME
+# -------------------------------------------------------------------
+# Life is full of misery, loneliness, and suffering --
+# and it's all over much too soon.
+# Woody Allen
+# -------------------------------------------------------------------
-SQL::Translator::Producer::PostgreSQL - PostgreSQL-specific producer for SQL::Translator
+=pod
=head1 AUTHOR
projects / dbsrgits/SQL-Translator.git / blobdiff