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# Copyright (c) 2006, 2007 - OpenSLX GmbH
#
# This program is free software distributed under the GPL version 2.
# See http://openslx.org/COPYING
#
# If you have any feedback please consult http://openslx.org/feedback and
# send your suggestions, praise, or complaints to feedback@openslx.org
#
# General information about OpenSLX can be found at http://openslx.org/
# -----------------------------------------------------------------------------
# mysql.pm
# - provides mysql-specific overrides of the OpenSLX MetaDB API.
# -----------------------------------------------------------------------------
package OpenSLX::MetaDB::mysql;
use strict;
use warnings;
use base qw(OpenSLX::MetaDB::DBI);
################################################################################
### This class provides a MetaDB backend for mysql databases.
### - by default the db will be created inside a 'openslxdata-mysql' directory.
################################################################################
use DBD::mysql;
use OpenSLX::Basics;
use OpenSLX::Utils;
################################################################################
### implementation
################################################################################
sub new
{
my $class = shift;
my $self = {};
return bless $self, $class;
}
sub connect ## no critic (ProhibitBuiltinHomonyms)
{
my $self = shift;
my $dbSpec = $openslxConfig{'db-spec'};
if (!defined $dbSpec) {
# build $dbSpec from individual parameters:
$dbSpec = "database=$openslxConfig{'db-name'}";
}
my $dbUser
= $openslxConfig{'db-user'}
? $openslxConfig{'db-user'}
: (getpwuid($>))[0];
my $dbPasswd = $openslxConfig{'db-passwd'};
if (!defined $dbPasswd) {
$dbPasswd = readPassword("db-password> ");
}
vlog(1, "trying to connect user '$dbUser' to mysql-database '$dbSpec'");
$self->{'dbh'} = DBI->connect(
"dbi:mysql:$dbSpec", $dbUser, $dbPasswd, {
PrintError => 0,
mysql_auto_reconnect => 1,
}
) or die _tr("Cannot connect to database '%s' (%s)", $dbSpec, $DBI::errstr);
return 1;
}
sub schemaConvertTypeDescrToNative
{
my $self = shift;
my $typeDescr = lc(shift);
if ($typeDescr eq 'b') {
return 'integer';
} elsif ($typeDescr eq 'i') {
return 'integer';
} elsif ($typeDescr eq 'pk') {
return 'integer AUTO_INCREMENT primary key';
} elsif ($typeDescr eq 'fk') {
return 'integer';
} elsif ($typeDescr =~ m[^s\.(\d+)$]i) {
return "varchar($1)";
} else {
croak _tr('UnknownDbSchemaTypeDescr', $typeDescr);
}
return;
}
sub schemaRenameTable
{
my $self = shift;
my $oldTable = shift;
my $newTable = shift;
my $colDescrs = shift;
my $isSubCmd = shift;
my $dbh = $self->{'dbh'};
vlog(1, "renaming table <$oldTable> to <$newTable>...") unless $isSubCmd;
my $sql = "ALTER TABLE $oldTable RENAME TO $newTable";
vlog(3, $sql);
$dbh->do($sql)
or croak _tr(q[Can't rename table <%s> (%s)], $oldTable, $dbh->errstr);
return;
}
sub schemaAddColumns
{
my $self = shift;
my $table = shift;
my $newColDescrs = shift;
my $newColDefaultVals = shift;
my $colDescrs = shift;
my $isSubCmd = shift;
my $dbh = $self->{'dbh'};
my $newColNames = $self->_convertColDescrsToColNamesString($newColDescrs);
vlog(1, "adding columns <$newColNames> to table <$table>") unless $isSubCmd;
my $addClause = join ', ',
map { "ADD COLUMN " . $self->_convertColDescrsToDBNativeString([$_]); }
@$newColDescrs;
my $sql = "ALTER TABLE $table $addClause";
vlog(3, $sql);
$dbh->do($sql)
or croak _tr(q[Can't add columns to table <%s> (%s)], $table,
$dbh->errstr);
# if default values have been provided, we apply them now:
if (defined $newColDefaultVals) {
$self->_doUpdate($table, undef, $newColDefaultVals);
}
return;
}
sub schemaDropColumns
{
my $self = shift;
my $table = shift;
my $dropColNames = shift;
my $colDescrs = shift;
my $isSubCmd = shift;
my $dbh = $self->{'dbh'};
my $dropColStr = join ', ', @$dropColNames;
vlog(1,
"dropping columns <$dropColStr> from table <$table>...")
unless $isSubCmd;
my $dropClause = join ', ', map { "DROP COLUMN $_" } @$dropColNames;
my $sql = "ALTER TABLE $table $dropClause";
vlog(3, $sql);
$dbh->do($sql)
or croak _tr(q[Can't drop columns from table <%s> (%s)], $table,
$dbh->errstr);
return;
}
sub schemaChangeColumns
{
my $self = shift;
my $table = shift;
my $colChanges = shift;
my $colDescrs = shift;
my $isSubCmd = shift;
my $dbh = $self->{'dbh'};
my $changeColStr = join ', ', keys %$colChanges;
vlog(1, "changing columns <$changeColStr> in table <$table>...")
unless $isSubCmd;
my $changeClause = join ', ', map {
"CHANGE COLUMN $_ "
. $self->_convertColDescrsToDBNativeString([$colChanges->{$_}]);
}
keys %$colChanges;
my $sql = "ALTER TABLE $table $changeClause";
vlog(3, $sql);
$dbh->do($sql)
or croak _tr(q[Can't change columns in table <%s> (%s)], $table,
$dbh->errstr);
return;
}
1;
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