package # hide from PAUSE
DBIx::Class::Componentised;
use strict;
use warnings;
use base 'Class::C3::Componentised';
use Carp::Clan qw/^DBIx::Class/;
sub inject_base {
my ($class, $target, @to_inject) = @_;
{
no strict 'refs';
foreach my $to (reverse @to_inject) {
my @comps = qw(DigestColumns ResultSetManager Ordered UTF8Columns);
# Add components here that need to be loaded before Core
foreach my $first_comp (@comps) {
if ($to eq 'DBIx::Class::Core' &&
$target->isa("DBIx::Class::${first_comp}")) {
warn "Possible incorrect order of components in ".
"${target}::load_components($first_comp) call: Core loaded ".
"before $first_comp. See the documentation for ".
"DBIx::Class::$first_comp for more information";
}
}
unshift( @{"${target}::ISA"}, $to )
unless ($target eq $to || $target->isa($to));
}
}
$class->next::method($target, @to_inject);
}
# Returns a true value if the specified class is installed and loaded
# successfully, throws an exception if the class is found but not loaded
# successfully, and false if the class is not installed
sub load_optional_class {
my ($class, $f_class) = @_;
eval { $class->ensure_class_loaded($f_class) };
my $err = $@; # so we don't lose it
if (! $err) {
return 1;
}
else {
my $fn = (join ('/', split ('::', $f_class) ) ) . '.pm';
if ($err =~ /Can't locate ${fn} in \@INC/ ) {
return 0;
}
else {
die $err;
}
}
}
1;