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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::Pg;
###############################################################################
#
# DB::Schema implementation for PostgreSQL
#
###############################################################################
use strict;
use base qw(Bugzilla::DB::Schema);
#------------------------------------------------------------------------------
sub _initialize {
my $self = shift;
$self = $self->SUPER::_initialize(@_);
# Remove FULLTEXT index types from the schemas.
foreach my $table (keys %{ $self->{schema} }) {
if ($self->{schema}{$table}{INDEXES}) {
foreach my $index (@{ $self->{schema}{$table}{INDEXES} }) {
if (ref($index) eq 'HASH') {
delete($index->{TYPE}) if (exists $index->{TYPE}
&& $index->{TYPE} eq 'FULLTEXT');
}
}
foreach my $index (@{ $self->{abstract_schema}{$table}{INDEXES} }) {
if (ref($index) eq 'HASH') {
delete($index->{TYPE}) if (exists $index->{TYPE}
&& $index->{TYPE} eq 'FULLTEXT');
}
}
}
}
$self->{db_specific} = {
BOOLEAN => 'smallint',
FALSE => '0',
TRUE => '1',
INT1 => 'integer',
INT2 => 'integer',
INT3 => 'integer',
INT4 => 'integer',
SMALLSERIAL => 'serial unique',
MEDIUMSERIAL => 'serial unique',
INTSERIAL => 'serial unique',
TINYTEXT => 'varchar(255)',
MEDIUMTEXT => 'text',
TEXT => 'text',
LONGBLOB => 'bytea',
DATETIME => 'timestamp(0) without time zone',
};
$self->_adjust_schema;
return $self;
} #eosub--_initialize
#--------------------------------------------------------------------
# Overridden because Pg has such weird ALTER TABLE problems.
sub get_add_column_ddl {
my ($self, $table, $column, $definition, $init_value) = @_;
my @statements;
my $specific = $self->{db_specific};
my $type = $definition->{TYPE};
$type = $specific->{$type} if exists $specific->{$type};
push(@statements, "ALTER TABLE $table ADD COLUMN $column $type");
my $default = $definition->{DEFAULT};
if (defined $default) {
# Replace any abstract default value (such as 'TRUE' or 'FALSE')
# with its database-specific implementation.
$default = $specific->{$default} if exists $specific->{$default};
push(@statements, "ALTER TABLE $table ALTER COLUMN $column "
. " SET DEFAULT $default");
}
if (defined $init_value) {
push(@statements, "UPDATE $table SET $column = $init_value");
}
if ($definition->{NOTNULL}) {
# Handle rows that were NULL when we added the column.
# We *must* have a DEFAULT. This check is usually handled
# at a higher level than this code, but I figure it can't
# hurt to have it here.
die "NOT NULL columns must have a DEFAULT or an init_value."
unless (exists $definition->{DEFAULT} || defined $init_value);
push(@statements, "UPDATE $table SET $column = $default");
push(@statements, "ALTER TABLE $table ALTER COLUMN $column "
. " SET NOT NULL");
}
if ($definition->{PRIMARYKEY}) {
push(@statements, "ALTER TABLE $table ALTER COLUMN "
. " ADD PRIMARY KEY ($column)");
}
return @statements;
}
sub get_rename_column_ddl {
my ($self, $table, $old_name, $new_name) = @_;
return ("ALTER TABLE $table RENAME COLUMN $old_name TO $new_name");
}
1;
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