package SQL::Translator::Producer::SQLite;
# -------------------------------------------------------------------
-# $Id: SQLite.pm,v 1.1 2003-03-04 21:24:13 kycl4rk Exp $
+# $Id: SQLite.pm,v 1.15 2006-08-26 11:35:31 schiffbruechige 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
# 02111-1307 USA
# -------------------------------------------------------------------
-use strict;
-use Data::Dumper;
+=head1 NAME
-use vars qw[ $VERSION $DEBUG $WARN ];
-$VERSION = sprintf "%d.%02d", q$Revision: 1.1 $ =~ /(\d+)\.(\d+)/;
+SQL::Translator::Producer::SQLite - SQLite producer for SQL::Translator
-my %used_identifiers = ();
-my $max_id_length = 30;
-my %global_names;
-my %truncated;
+=head1 SYNOPSIS
-sub import {
- warn "loading " . __PACKAGE__ . "...\n";
-}
+ use SQL::Translator;
-sub produce {
- my ($translator, $data) = @_;
- $DEBUG = $translator->debug;
- $WARN = $translator->show_warnings;
- my $no_comments = $translator->no_comments;
- my $add_drop_table = $translator->add_drop_table;
-
- debug("Beginning production\n");
-
- my $create;
- unless ( $no_comments ) {
- $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'}};
-
- #
- # Header. Should this look like what mysqldump produces?
- #
- $create .= "--\n-- Table: $table\n--\n" unless $no_comments;
- $create .= qq[DROP TABLE $table;\n] if $add_drop_table;
- $create .= "CREATE TABLE $table (";
-
- #
- # Fields
- #
- for (my $i = 0; $i <= $#fields; $i++) {
- my $field = $fields[$i];
- debug("Looking at field '$field'\n");
- my $field_data = $table_data->{'fields'}->{$field};
- my @fdata = ("", $field);
- $create .= "\n";
-
- # data type and size
- my $data_type = lc $field_data->{'data_type'};
- my $list = $field_data->{'list'} || [];
- my $commalist = join ",", @$list;
- my $size;
-
- if ( $data_type eq 'set' ) {
- $data_type = 'varchar';
- $size = length $commalist;
- }
- else {
- $size = join( ', ', @{ $field_data->{'size'} || [] } );
- }
-
- push @fdata, sprintf "%s%s", $data_type, ($size) ? "($size)" : '';
-
- # MySQL qualifiers
-# for my $qual ( qw[ binary unsigned zerofill ] ) {
-# push @fdata, $qual
-# if $field_data->{ $qual } ||
-# $field_data->{ uc $qual };
-# }
+ my $t = SQL::Translator->new( parser => '...', producer => 'SQLite' );
+ $t->translate;
- # Null?
- push @fdata, "NOT NULL" unless $field_data->{'null'};
+=head1 DESCRIPTION
- # Default? XXX Need better quoting!
- my $default = $field_data->{'default'};
- if ( defined $default ) {
- if ( uc $default eq 'NULL') {
- push @fdata, "DEFAULT NULL";
- } else {
- push @fdata, "DEFAULT '$default'";
- }
- }
+This module will produce text output of the schema suitable for SQLite.
- # auto_increment?
-# push @fdata, "auto_increment" if $field_data->{'is_auto_inc'};
-
- # primary key?
- # This is taken care of in the indices, could be duplicated here
- # push @fdata, "PRIMARY KEY" if $field_data->{'is_primary_key'};
+=cut
+use strict;
+use Data::Dumper;
+use SQL::Translator::Schema::Constants;
+use SQL::Translator::Utils qw(debug header_comment);
- $create .= (join " ", '', @fdata);
- $create .= "," unless ($i == $#fields);
- }
- #
- # Indices
- #
- my @index_creates;
- my $idx_name_default;
- for my $index ( @{ $table_data->{'indices'} || [] } ) {
- my ($name, $type, $fields) = @{ $index }{ qw[ name type fields ] };
- $name ||= '';
- my $index_type =
- $type eq 'primary_key' ? 'PRIMARY KEY' :
- $type eq 'unique' ? 'UNIQUE INDEX' : 'INDEX';
- if ( $type eq 'primary_key' ) {
- $create .= join(",\n", '',
- " $index_type $name (" . join( ', ', @$fields ) . ')'
- );
- }
- else {
- $name = mk_name(
- $table, $name || ++$idx_name_default
- );
- push @index_creates,
- "CREATE $index_type $name on $table ".
- '(' . join( ', ', @$fields ) . ')';
- }
- }
+use vars qw[ $VERSION $DEBUG $WARN ];
- $create .= "\n);\n";
+$VERSION = sprintf "%d.%02d", q$Revision: 1.15 $ =~ /(\d+)\.(\d+)/;
+$DEBUG = 0 unless defined $DEBUG;
+$WARN = 0 unless defined $WARN;
- for my $index_create ( @index_creates ) {
- $create .= "$index_create;\n";
- }
+my %used_identifiers = ();
+my $max_id_length = 30;
+my %global_names;
+my %truncated;
- $create .= "\n";
+sub produce {
+ my $translator = shift;
+ local $DEBUG = $translator->debug;
+ local $WARN = $translator->show_warnings;
+ my $no_comments = $translator->no_comments;
+ my $add_drop_table = $translator->add_drop_table;
+ my $schema = $translator->schema;
+
+ debug("PKG: Beginning production\n");
+
+ my $create = '';
+ $create .= header_comment unless ($no_comments);
+ $create .= "BEGIN TRANSACTION;\n\n";
+
+ my @table_defs = ();
+ for my $table ( $schema->get_tables ) {
+ push @table_defs, create_table($table, { no_comments => $no_comments,
+ add_drop_table => $add_drop_table,});
}
- return $create;
-}
+# $create .= "COMMIT;\n";
-# -------------------------------------------------------------------
-sub debug {
- if ($DEBUG) {
- map { warn "[" . __PACKAGE__ . "] $_" } @_;
- }
+ return wantarray ? ($create, @table_defs, "COMMIT;\n") : join("\n", ($create, @table_defs, "COMMIT;\n"));
}
# -------------------------------------------------------------------
return $name;
}
+sub create_table
+{
+ my ($table, $options) = @_;
+
+ my $table_name = $table->name;
+ my $no_comments = $options->{no_comments};
+ my $add_drop_table = $options->{add_drop_table};
+
+ debug("PKG: Looking at table '$table_name'\n");
+
+ my ( @index_defs, @constraint_defs, @trigger_defs );
+ my @fields = $table->get_fields or die "No fields in $table_name";
+
+ #
+ # Header.
+ #
+ my $create = '';
+ $create .= "--\n-- Table: $table_name\n--\n" unless $no_comments;
+ $create .= qq[DROP TABLE $table_name;\n] if $add_drop_table;
+ $create .= "CREATE TABLE $table_name (\n";
+
+ #
+ # Comments
+ #
+ if ( $table->comments and !$no_comments ){
+ $create .= "-- Comments: \n-- ";
+ $create .= join "\n-- ", $table->comments;
+ $create .= "\n--\n\n";
+ }
+
+ #
+ # How many fields in PK?
+ #
+ my $pk = $table->primary_key;
+ my @pk_fields = $pk ? $pk->fields : ();
+
+ #
+ # Fields
+ #
+ my ( @field_defs, $pk_set );
+ for my $field ( @fields ) {
+ push @field_defs, create_field($field);
+ }
+
+ if (
+ scalar @pk_fields > 1
+ ||
+ ( @pk_fields && !grep /INTEGER PRIMARY KEY/, @field_defs )
+ ) {
+ push @field_defs, 'PRIMARY KEY (' . join(', ', @pk_fields ) . ')';
+ }
+
+ #
+ # Indices
+ #
+ my $idx_name_default = 'A';
+ for my $index ( $table->get_indices ) {
+ push @index_defs, create_index($index);
+ }
+
+ #
+ # Constraints
+ #
+ my $c_name_default = 'A';
+ for my $c ( $table->get_constraints ) {
+ next unless $c->type eq UNIQUE;
+ push @constraint_defs, create_constraint($c);
+ }
+
+ $create .= join(",\n", map { " $_" } @field_defs ) . "\n);\n";
+
+ $create .= "\n";
+
+ for my $def ( @index_defs, @constraint_defs, @trigger_defs ) {
+ $create .= "$def\n";
+ }
+ return $create;
+}
+
+sub create_field
+{
+ my ($field, $options) = @_;
+
+ my $field_name = $field->name;
+ debug("PKG: Looking at field '$field_name'\n");
+ my $field_comments = $field->comments
+ ? "-- " . $field->comments . "\n "
+ : '';
+
+ my $field_def = $field_comments.$field_name;
+
+ # data type and size
+ my $size = $field->size;
+ my $data_type = $field->data_type;
+ $data_type = 'varchar' if lc $data_type eq 'set';
+ $data_type = 'blob' if lc $data_type eq 'bytea';
+
+ if ( lc $data_type =~ /(text|blob)/i ) {
+ $size = undef;
+ }
+
+# if ( $data_type =~ /timestamp/i ) {
+# push @trigger_defs,
+# "CREATE TRIGGER ts_${table_name} ".
+# "after insert on $table_name\n".
+# "begin\n".
+# " update $table_name set $field_name=timestamp() ".
+# "where id=new.id;\n".
+# "end;\n"
+# ;
+#
+# }
+
+ #
+ # SQLite is generally typeless, but newer versions will
+ # make a field autoincrement if it is declared as (and
+ # *only* as) INTEGER PRIMARY KEY
+ #
+ my $pk = $field->table->primary_key;
+ my @pk_fields = $pk ? $pk->fields : ();
+
+ if (
+ $field->is_primary_key &&
+ scalar @pk_fields == 1 &&
+ (
+ $data_type =~ /int(eger)?$/i
+ ||
+ ( $data_type =~ /^number?$/i && $size !~ /,/ )
+ )
+ ) {
+ $data_type = 'INTEGER PRIMARY KEY';
+ $size = undef;
+# $pk_set = 1;
+ }
+
+ $field_def .= sprintf " %s%s", $data_type,
+ ( !$field->is_auto_increment && $size ) ? "($size)" : '';
+
+ # Null?
+ $field_def .= ' NOT NULL' unless $field->is_nullable;
+
+ # Default? XXX Need better quoting!
+ my $default = $field->default_value;
+ if ( defined $default ) {
+ if ( uc $default eq 'NULL') {
+ $field_def .= ' DEFAULT NULL';
+ } elsif ( $default eq 'now()' ||
+ $default eq 'CURRENT_TIMESTAMP' ) {
+ $field_def .= ' DEFAULT CURRENT_TIMESTAMP';
+ } elsif ( $default =~ /val\(/ ) {
+ next;
+ } else {
+ $field_def .= " DEFAULT '$default'";
+ }
+ }
+
+ return $field_def;
+
+}
+
+sub create_index
+{
+ my ($index, $options) = @_;
+
+ my $name = $index->name;
+ $name = mk_name($index->table->name, $name); # || ++$idx_name_default);
+
+ # strip any field size qualifiers as SQLite doesn't like these
+ my @fields = map { s/\(\d+\)$//; $_ } $index->fields;
+ my $index_def =
+ "CREATE INDEX $name on " . $index->table->name .
+ ' (' . join( ', ', @fields ) . ');';
+
+ return $index_def;
+}
+
+sub create_constraint
+{
+ my ($c, $options) = @_;
+
+ my $name = $c->name;
+ $name = mk_name($c->table->name, $name); # || ++$idx_name_default);
+ my @fields = $c->fields;
+
+ my $c_def =
+ "CREATE UNIQUE INDEX $name on " . $c->table->name .
+ ' (' . join( ', ', @fields ) . ');';
+
+ return $c_def;
+}
+
1;
-__END__
-=head1 NAME
+=pod
-SQL::Translator::Producer::SQLite - SQLite-specific producer for SQL::Translator
+=head1 SEE ALSO
+
+SQL::Translator, http://www.sqlite.org/.
=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