use strict;
use warnings;
-use Class::C3;
-use Class::Inspector;
+use base 'Class::C3::Componentised';
+use Carp::Clan qw/^DBIx::Class/;
sub inject_base {
my ($class, $target, @to_inject) = @_;
{
no strict 'refs';
foreach my $to (reverse @to_inject) {
- unshift( @{"${target}::ISA"}, $to )
- unless ($target eq $to || $target->isa($to));
+ 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));
}
}
- # Yes, this is hack. But it *does* work. Please don't submit tickets about
- # it on the basis of the comments in Class::C3, the author was on #dbix-class
- # while I was implementing this.
-
- my $table = { Class::C3::_dump_MRO_table };
- eval "package $target; import Class::C3;" unless exists $table->{$target};
-}
-
-sub load_components {
- my $class = shift;
- my $base = $class->component_base_class;
- my @comp = map { /^\+(.*)$/ ? $1 : "${base}::$_" } grep { $_ !~ /^#/ } @_;
- $class->_load_components(@comp);
- Class::C3::reinitialize();
-}
-
-sub load_own_components {
- my $class = shift;
- my @comp = map { "${class}::$_" } grep { $_ !~ /^#/ } @_;
- $class->_load_components(@comp);
+ $class->next::method($target, @to_inject);
}
-sub _load_components {
- my ($class, @comp) = @_;
- foreach my $comp (@comp) {
- $class->ensure_class_loaded($comp);
- }
- $class->inject_base($class => @comp);
-}
-
-# TODO: handle ->has_many('rel', 'Class'...) instead of
-# ->has_many('rel', 'Some::Schema::Class'...)
-sub ensure_class_loaded {
+# 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 "require $f_class";
- my $err = $@;
- Class::Inspector->loaded($f_class)
- or die $err || "require $f_class was successful but the package".
- "is not defined";
+ if ($class->ensure_class_found($f_class)) {
+ $class->ensure_class_loaded($f_class);
+ return 1;
+ } else {
+ return 0;
+ }
}
1;