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# -*- Mode: perl; indent-tabs-mode: nil -*-
#
# The contents of this file are subject to the Mozilla Public
# License Version 1.1 (the "License"); you may not use this file
# except in compliance with the License. You may obtain a copy of
# the License at http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS
# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
# implied. See the License for the specific language governing
# rights and limitations under the License.
#
# The Original Code is the Bugzilla Bug Tracking System.
#
# The Initial Developer of the Original Code is Netscape Communications
# Corporation. Portions created by Netscape are
# Copyright (C) 1998 Netscape Communications Corporation. All
# Rights Reserved.
#
# Contributor(s): Andrew Dunstan <andrew@dunslane.net>,
# Edward J. Sabol <edwardjsabol@iname.com>
package Bugzilla::DB::Schema::Mysql;
###############################################################################
#
# DB::Schema implementation for MySQL
#
###############################################################################
use strict;
use Bugzilla::Error;
use base qw(Bugzilla::DB::Schema);
#------------------------------------------------------------------------------
sub _initialize {
my $self = shift;
$self = $self->SUPER::_initialize(@_);
$self->{db_specific} = {
BOOLEAN => 'tinyint',
FALSE => '0',
TRUE => '1',
INT1 => 'tinyint',
INT2 => 'smallint',
INT3 => 'mediumint',
INT4 => 'integer',
SMALLSERIAL => 'smallint auto_increment',
MEDIUMSERIAL => 'mediumint auto_increment',
INTSERIAL => 'integer auto_increment',
TINYTEXT => 'tinytext',
MEDIUMTEXT => 'mediumtext',
TEXT => 'text',
LONGBLOB => 'longblob',
DATETIME => 'datetime',
};
$self->_adjust_schema;
return $self;
} #eosub--_initialize
#------------------------------------------------------------------------------
sub _get_create_table_ddl {
# Extend superclass method to specify the MYISAM storage engine.
# Returns a "create table" SQL statement.
my($self, $table) = @_;
return($self->SUPER::_get_create_table_ddl($table) . ' TYPE = MYISAM');
} #eosub--_get_create_table_ddl
#------------------------------------------------------------------------------
sub _get_create_index_ddl {
# Extend superclass method to create FULLTEXT indexes on text fields.
# Returns a "create index" SQL statement.
my($self, $table_name, $index_name, $index_fields, $index_type) = @_;
my $sql = "CREATE ";
$sql .= "$index_type " if ($index_type eq 'UNIQUE'
|| $index_type eq 'FULLTEXT');
$sql .= "INDEX $index_name ON $table_name \(" .
join(", ", @$index_fields) . "\)";
return($sql);
} #eosub--_get_create_index_ddl
#--------------------------------------------------------------------
# MySQL has a simpler ALTER TABLE syntax than ANSI.
sub get_alter_column_ddl {
my ($self, $table, $column, $new_def) = @_;
my $new_ddl = $self->get_type_ddl($new_def);
return (("ALTER TABLE $table CHANGE COLUMN $column $column $new_ddl"));
}
sub get_drop_index_ddl {
my ($self, $table, $name) = @_;
return ("DROP INDEX $name ON $table");
}
sub get_rename_column_ddl {
my ($self, $table, $old_name, $new_name) = @_;
my $def = $self->get_type_ddl($self->get_column($table, $old_name));
return ("ALTER TABLE $table CHANGE COLUMN $old_name $new_name $def");
}
1;
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