package SQL::Translator::Producer::MySQL;
# -------------------------------------------------------------------
-# $Id: MySQL.pm,v 1.31 2004-02-09 23:02:15 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: 1.31 $ =~ /(\d+)\.(\d+)/;
+$VERSION = sprintf "%d.%02d", q$Revision: 1.45 $ =~ /(\d+)\.(\d+)/;
$DEBUG = 0 unless defined $DEBUG;
use Data::Dumper;
real => 'double',
comment => 'text',
bit => 'tinyint',
+
+ #
+ # Access types
+ #
+ 'long integer' => 'integer',
+ 'text' => 'text',
+ 'datetime' => 'datetime',
);
sub produce {
my $no_comments = $translator->no_comments;
my $add_drop_table = $translator->add_drop_table;
my $schema = $translator->schema;
+ my $show_warnings = $translator->show_warnings || 0;
debug("PKG: Beginning production\n");
# \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
if ( scalar @size > 1 ) {
$data_type = 'double';
}
- elsif ( $size[0] >= 12 ) {
+ elsif ( $size[0] && $size[0] >= 12 ) {
$data_type = 'bigint';
}
- elsif ( $size[0] <= 1 ) {
+ elsif ( $size[0] && $size[0] <= 1 ) {
$data_type = 'tinyint';
}
else {
$data_type = 'int';
}
}
+ #
+ # Convert a large Oracle varchar to "text"
+ #
+ elsif ( $data_type =~ /char/i && $size[0] > 255 ) {
+ $data_type = 'text';
+ @size = ();
+ }
+ elsif ( $data_type =~ /char/i && ! $size[0] ) {
+ @size = (255);
+ }
+ elsif ( $data_type =~ /boolean/i ) {
+ $data_type = 'enum';
+ $commalist = "'0','1'";
+ }
elsif ( exists $translate{ lc $data_type } ) {
$data_type = $translate{ lc $data_type };
}
@size = () if $data_type =~ /(text|blob)/i;
+ if ( $data_type =~ /(double|float)/ && scalar @size == 1 ) {
+ push @size, '0';
+ }
+
$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;
# Indices
#
my @index_defs;
+ my %indexed_fields;
for my $index ( $table->get_indices ) {
push @index_defs, join( ' ',
lc $index->type eq 'normal' ? 'INDEX' : $index->type,
$index->name,
'(' . join( ', ', $index->fields ) . ')'
);
+ $indexed_fields{ $_ } = 1 for $index->fields;
}
#
# Constraints -- need to handle more than just FK. -ky
#
my @constraint_defs;
- for my $c ( $table->get_constraints ) {
+ my @constraints = $table->get_constraints;
+ for my $c ( @constraints ) {
my @fields = $c->fields or next;
if ( $c->type eq PRIMARY_KEY ) {
}
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 ) {
+ #
+ # Make sure FK field is indexed or MySQL complains.
+ #
+ unless ( $indexed_fields{ $fields[0] } ) {
+ push @index_defs, "INDEX ($fields[0])";
+ $indexed_fields{ $fields[0] } = 1;
+ }
+
my $def = join(' ',
- map { $_ || () } 'FOREIGN KEY', $c->name
+ map { $_ || () } 'CONSTRAINT', $c->name, 'FOREIGN KEY'
);
$def .= ' (' . join( ', ', @fields ) . ')';
$def .= ' REFERENCES ' . $c->reference_table;
- if ( my @rfields = $c->reference_fields ) {
+ my @rfields = map { $_ || () } $c->reference_fields;
+ unless ( @rfields ) {
+ my $rtable_name = $c->reference_table;
+ if ( my $ref_table = $schema->get_table( $rtable_name ) ) {
+ push @rfields, $ref_table->primary_key;
+ }
+ else {
+ warn "Can't find reference table '$rtable_name' " .
+ "in schema\n" if $show_warnings;
+ }
+ }
+
+ if ( @rfields ) {
$def .= ' (' . join( ', ', @rfields ) . ')';
}
+ else {
+ warn "FK constraint on " . $table->name . '.' .
+ join('', @fields) . " has no reference fields\n"
+ if $show_warnings;
+ }
if ( $c->match_type ) {
$def .= ' MATCH ' .
# Footer
#
$create .= "\n)";
-# while (
-# my ( $key, $val ) = each %{ $table->options }
-# ) {
-# $create .= " $key=$val"
-# }
+ 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";
}
projects / dbsrgits/SQL-Translator.git / blobdiff