Current File : C:/xampp/perl/vendor/lib/DBIx/Class/Storage/DBI/Sybase.pm
package DBIx::Class::Storage::DBI::Sybase;
use strict;
use warnings;
use Try::Tiny;
use namespace::clean;
use base qw/DBIx::Class::Storage::DBI/;
=head1 NAME
DBIx::Class::Storage::DBI::Sybase - Base class for drivers using
L<DBD::Sybase>
=head1 DESCRIPTION
This is the base class/dispatcher for Storage's designed to work with
L<DBD::Sybase>
=head1 METHODS
=cut
sub _rebless {
my $self = shift;
my $dbtype;
try {
$dbtype = @{$self->_get_dbh->selectrow_arrayref(qq{sp_server_info \@attribute_id=1})}[2]
} catch {
$self->throw_exception("Unable to establish connection to determine database type: $_")
};
if ($dbtype) {
$dbtype =~ s/\W/_/gi;
# saner class name
$dbtype = 'ASE' if $dbtype eq 'SQL_Server';
my $subclass = __PACKAGE__ . "::$dbtype";
if ($self->load_optional_class($subclass)) {
bless $self, $subclass;
$self->_rebless;
}
}
}
sub _init {
# once the driver is determined see if we need to insert the DBD::Sybase w/ FreeTDS fixups
# this is a dirty version of "instance role application", \o/ DO WANT Moo \o/
my $self = shift;
if (! $self->isa('DBIx::Class::Storage::DBI::Sybase::FreeTDS') and $self->_using_freetds) {
require DBIx::Class::Storage::DBI::Sybase::FreeTDS;
my @isa = @{mro::get_linear_isa(ref $self)};
my $class = shift @isa; # this is our current ref
my $trait_class = $class . '::FreeTDS';
mro::set_mro ($trait_class, 'c3');
no strict 'refs';
@{"${trait_class}::ISA"} = ($class, 'DBIx::Class::Storage::DBI::Sybase::FreeTDS', @isa);
bless ($self, $trait_class);
Class::C3->reinitialize() if DBIx::Class::_ENV_::OLD_MRO;
$self->_init(@_);
}
$self->next::method(@_);
}
sub _ping {
my $self = shift;
my $dbh = $self->_dbh or return 0;
local $dbh->{RaiseError} = 1;
local $dbh->{PrintError} = 0;
# FIXME if the main connection goes stale, does opening another for this statement
# really determine anything?
if ($dbh->{syb_no_child_con}) {
return try {
$self->_connect->do('select 1');
1;
}
catch {
0;
};
}
return try {
$dbh->do('select 1');
1;
}
catch {
0;
};
}
sub _set_max_connect {
my $self = shift;
my $val = shift || 256;
my $dsn = $self->_dbi_connect_info->[0];
return if ref($dsn) eq 'CODE';
if ($dsn !~ /maxConnect=/) {
$self->_dbi_connect_info->[0] = "$dsn;maxConnect=$val";
my $connected = defined $self->_dbh;
$self->disconnect;
$self->ensure_connected if $connected;
}
}
# Whether or not DBD::Sybase was compiled against FreeTDS. If false, it means
# the Sybase OpenClient libraries were used.
sub _using_freetds {
my $self = shift;
return ($self->_get_dbh->{syb_oc_version}||'') =~ /freetds/i;
}
# Either returns the FreeTDS version against which DBD::Sybase was compiled,
# 0 if can't be determined, or undef otherwise
sub _using_freetds_version {
my $inf = shift->_get_dbh->{syb_oc_version};
return undef unless ($inf||'') =~ /freetds/i;
return $inf =~ /v([0-9\.]+)/ ? $1 : 0;
}
=head1 FURTHER QUESTIONS?
Check the list of L<additional DBIC resources|DBIx::Class/GETTING HELP/SUPPORT>.
=head1 COPYRIGHT AND LICENSE
This module is free software L<copyright|DBIx::Class/COPYRIGHT AND LICENSE>
by the L<DBIx::Class (DBIC) authors|DBIx::Class/AUTHORS>. You can
redistribute it and/or modify it under the same terms as the
L<DBIx::Class library|DBIx::Class/COPYRIGHT AND LICENSE>.
=cut
1;
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