X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FDBIx%2FClass%2FRelationship%2FManyToMany.pm;h=e715f10e45e6f8ca6d2588e3f505a02dac214ce4;hb=09d8fb4a05e6cd025924cc08e41484f17a116695;hp=37c84610d7bcac8e20de9b2cd35d383f8cf24c4b;hpb=86ed11c90f4995d43cd636c5e5a021a5e0d5d816;p=dbsrgits%2FDBIx-Class.git

diff --git a/lib/DBIx/Class/Relationship/ManyToMany.pm b/lib/DBIx/Class/Relationship/ManyToMany.pm
index 37c8461..e715f10 100644
--- a/lib/DBIx/Class/Relationship/ManyToMany.pm
+++ b/lib/DBIx/Class/Relationship/ManyToMany.pm
@@ -5,9 +5,12 @@ use strict;
 use warnings;
 
 use DBIx::Class::Carp;
-use Sub::Name 'subname';
-use Scalar::Util 'blessed';
-use DBIx::Class::_Util 'fail_on_internal_wantarray';
+use DBIx::Class::_Util qw( quote_sub perlstring );
+
+# FIXME - this souldn't be needed
+my $cu;
+BEGIN { $cu = \&carp_unique }
+
 use namespace::clean;
 
 our %_pod_inherit_config =
@@ -26,10 +29,6 @@ sub many_to_many {
     "missing foreign relation in many-to-many"
   ) unless $f_rel;
 
-  {
-    no strict 'refs';
-    no warnings 'redefine';
-
     my $add_meth = "add_to_${meth}";
     my $remove_meth = "remove_from_${meth}";
     my $set_meth = "set_${meth}";
@@ -57,92 +56,179 @@ EOW
       }
     }
 
-    $rel_attrs->{alias} ||= $f_rel;
+    my @main_meth_qsub_args = (
+      {},
+      { attributes => [
+        'DBIC_method_is_indirect_sugar',
+        ( keys( %{$rel_attrs||{}} )
+          ? 'DBIC_method_is_m2m_sugar_with_attrs'
+          : 'DBIC_method_is_m2m_sugar'
+        ),
+      ] },
+    );
+
+
+    quote_sub "${class}::${meth}", sprintf( <<'EOC', $rs_meth ), @main_meth_qsub_args;
+
+      DBIx::Class::_ENV_::ASSERT_NO_INTERNAL_INDIRECT_CALLS and DBIx::Class::_Util::fail_on_internal_call;
+      DBIx::Class::_ENV_::ASSERT_NO_INTERNAL_WANTARRAY and my $sog = DBIx::Class::_Util::fail_on_internal_wantarray;
+
+      my $rs = shift->%s( @_ );
+
+      wantarray ? $rs->all : $rs;
+EOC
+
+
+    my @extra_meth_qsub_args = (
+      {
+        '$rel_attrs' => \{ alias => $f_rel, %{ $rel_attrs||{} } },
+        '$carp_unique' => \$cu,
+      },
+      { attributes => [
+        'DBIC_method_is_indirect_sugar',
+        ( keys( %{$rel_attrs||{}} )
+          ? 'DBIC_method_is_m2m_extra_sugar_with_attrs'
+          : 'DBIC_method_is_m2m_extra_sugar'
+        ),
+      ] },
+    );
+
+
+    quote_sub "${class}::${rs_meth}", sprintf( <<'EOC', map { perlstring $_ } ( "${class}::${meth}", $rel, $f_rel ) ), @extra_meth_qsub_args;
+
+      DBIx::Class::_ENV_::ASSERT_NO_INTERNAL_INDIRECT_CALLS
+        and
+      # allow nested calls from our ->many_to_many, see comment below
+      ( (CORE::caller(1))[3] ne %s )
+        and
+      DBIx::Class::_Util::fail_on_internal_call;
+
+      # this little horror is there replicating a deprecation from
+      # within search_rs() itself
+      shift->related_resultset( %s )
+            ->related_resultset( %s )
+             ->search_rs (
+               undef,
+               ( @_ > 1 and ref $_[-1] eq 'HASH' )
+                 ? { %%$rel_attrs, %%{ pop @_ } }
+                 : $rel_attrs
+             )->search_rs(@_)
+      ;
+EOC
 
-    my $rs_meth_name = join '::', $class, $rs_meth;
-    *$rs_meth_name = subname $rs_meth_name, sub {
-      my $self = shift;
-      my $attrs = @_ > 1 && ref $_[$#_] eq 'HASH' ? pop(@_) : {};
-      my $rs = $self->search_related($rel)->search_related(
-        $f_rel, @_ > 0 ? @_ : undef, { %{$rel_attrs||{}}, %$attrs }
-      );
-      return $rs;
-    };
+    # the above is the only indirect method, the 3 below have too much logic
+    shift @{$extra_meth_qsub_args[1]{attributes}};
 
-    my $meth_name = join '::', $class, $meth;
-    *$meth_name = subname $meth_name, sub {
-      DBIx::Class::_ENV_::ASSERT_NO_INTERNAL_WANTARRAY and my $sog = fail_on_internal_wantarray;
-      my $self = shift;
-      my $rs = $self->$rs_meth( @_ );
-      return (wantarray ? $rs->all : $rs);
-    };
 
-    my $add_meth_name = join '::', $class, $add_meth;
-    *$add_meth_name = subname $add_meth_name, sub {
-      my $self = shift;
-      @_ or $self->throw_exception(
-        "${add_meth} needs an object or hashref"
+    quote_sub "${class}::${add_meth}", sprintf( <<'EOC', $add_meth, $rel, $f_rel ), @extra_meth_qsub_args;
+
+      ( @_ >= 2 and @_ <= 3 ) or $_[0]->throw_exception(
+        "'%1$s' expects an object or hashref to link to, and an optional hashref of link data"
       );
 
-      my $link = $self->search_related_rs($rel)->new_result(
-        ( @_ > 1 && ref $_[-1] eq 'HASH' )
-          ? pop
-          : {}
+      $_[0]->throw_exception(
+        "The optional link data supplied to '%1$s' is not a hashref (it was previously ignored)"
+      ) if $_[2] and ref $_[2] ne 'HASH';
+
+      my( $self, $far_obj ) = @_;
+
+      my $guard;
+
+      # the API is always expected to return the far object, possibly
+      # creating it in the process
+      if( not defined Scalar::Util::blessed( $far_obj ) ) {
+
+        $guard = $self->result_source->schema->storage->txn_scope_guard;
+
+        # reify the hash into an actual object
+        $far_obj = $self->result_source
+                         ->related_source( q{%2$s} )
+                          ->related_source( q{%3$s} )
+                           ->resultset
+                            ->search_rs( undef, $rel_attrs )
+                             ->find_or_create( $far_obj );
+      }
+
+      my $link = $self->new_related(
+        q{%2$s},
+        $_[2] || {},
       );
 
-      my $far_obj = defined blessed $_[0]
-        ? $_[0]
-        : $self->result_source
-                ->related_source( $rel )
-                 ->related_source( $f_rel )
-                  ->resultset->search_rs( {}, $rel_attrs||{} )
-                   ->find_or_create( ref $_[0] eq 'HASH' ? $_[0] : {@_} )
-      ;
+      $link->set_from_related( q{%3$s}, $far_obj );
 
-      $link->set_from_related($f_rel, $far_obj);
       $link->insert();
 
-      return $far_obj;
-    };
+      $guard->commit if $guard;
+
+      $far_obj;
+EOC
+
+
+    quote_sub "${class}::${set_meth}", sprintf( <<'EOC', $set_meth, $add_meth, $rel, $f_rel ), @extra_meth_qsub_args;
 
-    my $set_meth_name = join '::', $class, $set_meth;
-    *$set_meth_name = subname $set_meth_name, sub {
       my $self = shift;
-      @_ > 0 or $self->throw_exception(
-        "{$set_meth} needs a list of objects or hashrefs"
+
+      my $set_to = ( ref $_[0] eq 'ARRAY' )
+        ? ( shift @_ )
+        : do {
+          $carp_unique->(
+            "Calling '%1$s' with a list of items to link to is deprecated, use an arrayref instead"
+          );
+
+          # gobble up everything from @_ into a new arrayref
+          [ splice @_ ]
+        }
+      ;
+
+      # make sure folks are not invoking a bizarre mix of deprecated and curent syntax
+      $self->throw_exception(
+        "'%1$s' expects an arrayref of objects or hashrefs to link to, and an optional hashref of link data"
+      ) if (
+        @_ > 1
+          or
+        ( defined $_[0] and ref $_[0] ne 'HASH' )
       );
-      my @to_set = (ref($_[0]) eq 'ARRAY' ? @{ $_[0] } : @_);
+
+      my $guard;
+
+      # there will only be a single delete() op, unless we have what to set to
+      $guard = $self->result_source->schema->storage->txn_scope_guard
+        if @$set_to;
+
       # if there is a where clause in the attributes, ensure we only delete
       # rows that are within the where restriction
-      if ($rel_attrs && $rel_attrs->{where}) {
-        $self->search_related( $rel, $rel_attrs->{where},{join => $f_rel})->delete;
-      } else {
-        $self->search_related( $rel, {} )->delete;
-      }
+      $self->related_resultset( q{%3$s} )
+            ->search_rs(
+              ( $rel_attrs->{where}
+                ? ( $rel_attrs->{where}, { join => q{%4$s} } )
+                : ()
+              )
+            )->delete;
+
       # add in the set rel objects
-      $self->$add_meth($_, ref($_[1]) ? $_[1] : {}) for (@to_set);
-    };
-
-    my $remove_meth_name = join '::', $class, $remove_meth;
-    *$remove_meth_name = subname $remove_meth_name, sub {
-      my ($self, $obj) = @_;
-      $self->throw_exception("${remove_meth} needs an object")
-        unless blessed ($obj);
-      my $rel_source = $self->search_related($rel)->result_source;
-      my $cond = $rel_source->relationship_info($f_rel)->{cond};
-      my ($link_cond, $crosstable) = $rel_source->_resolve_condition(
-        $cond, $obj, $f_rel, $f_rel
-      );
+      $self->%2$s(
+        $_,
+        @_, # at this point @_ is either empty or contains a lone link-data hash
+      ) for @$set_to;
 
-      $self->throw_exception(
-        "Relationship '$rel' does not resolve to a join-free condition, "
-       ."unable to use with the ManyToMany helper '$f_rel'"
-      ) if $crosstable;
+      $guard->commit if $guard;
+EOC
+
+
+    # the last method needs no captures - just kill it all with fire
+    $extra_meth_qsub_args[0] = {};
+
+
+    quote_sub "${class}::${remove_meth}", sprintf( <<'EOC', $remove_meth, $rel, $f_rel ), @extra_meth_qsub_args;
+
+      $_[0]->throw_exception("'%1$s' expects an object")
+        unless defined Scalar::Util::blessed( $_[1] );
 
-      $self->search_related($rel, $link_cond)->delete;
-    };
+      $_[0]->related_resultset( q{%2$s} )
+            ->search_rs( $_[1]->ident_condition( q{%3$s} ), { join => q{%3$s} } )
+             ->delete;
+EOC
 
-  }
 }
 
 1;