package SQL::Translator::Producer::MySQL;
# -------------------------------------------------------------------
-# $Id: MySQL.pm,v 1.41 2004-09-20 20:48:19 kycl4rk Exp $
+# $Id: MySQL.pm,v 1.45 2005-06-27 20:41:13 duality72 Exp $
# -------------------------------------------------------------------
# Copyright (C) 2002-4 SQLFairy Authors
#
between MySQL versions 3 and 4 ("SET foreign_key_checks," character sets
for fields, etc.).
+=head2 Table Types
+
+Normally the tables will be created without any explicit table type given and
+so will use the MySQL default.
+
+Any tables involved in foreign key constraints automatically get a table type
+of InnoDB, unless this is overridden by setting the C<mysql_table_type> extra
+attribute explicitly on the table.
+
+=head2 Extra attributes.
+
+The producer recognises the following extra attributes on the Schema objects.
+
+=over 4
+
+=item field.list
+
+Set the list of allowed values for Enum fields.
+
+=item field.binary field.unsigned field.zerofill
+
+Set the MySQL field options of the same name.
+
+=item table.mysql_table_type
+
+Set the type of the table e.g. 'InnoDB', 'MyISAM'. This will be
+automatically set for tables involved in foreign key constraints if it is
+not already set explicitly. See L<"Table Types">.
+
+=item table.mysql_charset table.mysql_collate
+
+Set the tables default charater set and collation order.
+
+=item field.mysql_charset field.mysql_collate
+
+Set the fields charater set and collation order.
+
+=back
+
=cut
use strict;
use vars qw[ $VERSION $DEBUG ];
-$VERSION = sprintf "%d.%02d", q$Revision: 1.41 $ =~ /(\d+)\.(\d+)/;
+$VERSION = sprintf "%d.%02d", q$Revision: 1.45 $ =~ /(\d+)\.(\d+)/;
$DEBUG = 0 unless defined $DEBUG;
use Data::Dumper;
# \todo Don't set if MySQL 3.x is set on command line
$create .= "SET foreign_key_checks=0;\n\n";
+ #
+ # Work out which tables need to be InnoDB to support foreign key
+ # constraints. We do this first as we need InnoDB at both ends.
+ #
+ foreach ( map { $_->get_constraints } $schema->get_tables ) {
+ foreach my $meth (qw/table reference_table/) {
+ my $table = $schema->get_table($_->$meth) || next;
+ next if $table->extra('mysql_table_type');
+ $table->extra( 'mysql_table_type' => 'InnoDB');
+ }
+ }
+
+ #
+ # Generate sql
+ #
for my $table ( $schema->get_tables ) {
my $table_name = $table->name;
debug("PKG: Looking at table '$table_name'\n");
my $list = $extra{'list'} || [];
# \todo deal with embedded quotes
my $commalist = join( ', ', map { qq['$_'] } @$list );
+ my $charset = $extra{'mysql_charset'};
+ my $collate = $extra{'mysql_collate'};
#
# Oracle "number" type -- figure best MySQL type
}
$field_def .= " $data_type";
-
+
if ( lc $data_type eq 'enum' ) {
$field_def .= '(' . $commalist . ')';
}
$field_def .= '(' . join( ', ', @size ) . ')';
}
+ # char sets
+ $field_def .= " CHARACTER SET $charset" if $charset;
+ $field_def .= " COLLATE $collate" if $collate;
+
# MySQL qualifiers
for my $qual ( qw[ binary unsigned zerofill ] ) {
- my $val = $extra{ $qual || uc $qual } or next;
+ my $val = $extra{ $qual } || $extra{ uc $qual } or next;
$field_def .= " $qual";
}
+ for my $qual ( 'character set', 'collate', 'on update' ) {
+ my $val = $extra{ $qual } || $extra{ uc $qual } or next;
+ $field_def .= " $qual $val";
+ }
# Null?
$field_def .= ' NOT NULL' unless $field->is_nullable;
}
}
+ if ( my $comments = $field->comments ) {
+ $field_def .= qq[ comment '$comments'];
+ }
+
# auto_increment?
$field_def .= " auto_increment" if $field->is_auto_increment;
push @field_defs, $field_def;
# Constraints -- need to handle more than just FK. -ky
#
my @constraint_defs;
- my $has_fk;
my @constraints = $table->get_constraints;
for my $c ( @constraints ) {
my @fields = $c->fields or next;
}
elsif ( $c->type eq UNIQUE ) {
push @constraint_defs,
- 'UNIQUE (' . join(', ', @fields). ')';
+ 'UNIQUE '.
+ (defined $c->name ? $c->name.' ' : '').
+ '(' . join(', ', @fields). ')';
}
elsif ( $c->type eq FOREIGN_KEY ) {
- $has_fk = 1;
-
#
# Make sure FK field is indexed or MySQL complains.
#
}
my $def = join(' ',
- map { $_ || () } 'FOREIGN KEY', $c->name
+ map { $_ || () } 'CONSTRAINT', $c->name, 'FOREIGN KEY'
);
$def .= ' (' . join( ', ', @fields ) . ')';
# Footer
#
$create .= "\n)";
- if ( $has_fk ) {
- $create .= " Type=InnoDB";
- }
+ my $table_type_defined = 0;
+ for my $t1_option_ref ( $table->options ) {
+ my($key, $value) = %{$t1_option_ref};
+ $table_type_defined = 1
+ if uc $key eq 'ENGINE' or uc $key eq 'TYPE';
+ $create .= " $key=$value";
+ }
+ my $mysql_table_type = $table->extra('mysql_table_type');
+ $create .= " Type=$mysql_table_type"
+ if $mysql_table_type && !$table_type_defined;
+ my $charset = $table->extra('mysql_charset');
+ my $collate = $table->extra('mysql_collate');
+ my $comments = $table->comments;
+
+ $create .= " DEFAULT CHARACTER SET $charset" if $charset;
+ $create .= " COLLATE $collate" if $collate;
+ $create .= qq[ comment='$comments'] if $comments;
$create .= ";\n\n";
}
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