From: Matt S Trout <mst@shadowcat.co.uk>
Date: Tue, 2 Aug 2005 04:12:20 +0000 (+0000)
Subject: Refactored HasA to use InflateColumn
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=9f300b1bcbbaef6d0a3e6fffb37e05119bd2c8cd;p=dbsrgits%2FDBIx-Class-Historic.git

Refactored HasA to use InflateColumn
---

diff --git a/lib/DBIx/Class/CDBICompat/ColumnCase.pm b/lib/DBIx/Class/CDBICompat/ColumnCase.pm
index 05ab20f..4e65117 100644
--- a/lib/DBIx/Class/CDBICompat/ColumnCase.pm
+++ b/lib/DBIx/Class/CDBICompat/ColumnCase.pm
@@ -17,7 +17,7 @@ sub _register_columns {
 sub has_a {
   my ($class, $col, @rest) = @_;
   $class->NEXT::ACTUAL::has_a(lc($col), @rest);
-  $class->mk_group_accessors('has_a' => $col);
+  $class->mk_group_accessors('inflated_column' => $col);
   return 1;
 }
 
@@ -28,19 +28,19 @@ sub has_many {
                                                           lc($f_key) ), @rest);
 }
 
-sub get_has_a {
+sub get_inflated_column {
   my ($class, $get, @rest) = @_;
-  return $class->NEXT::ACTUAL::get_has_a(lc($get), @rest);
+  return $class->NEXT::ACTUAL::get_inflated_column(lc($get), @rest);
 }
 
-sub store_has_a {
+sub store_inflated_column {
   my ($class, $set, @rest) = @_;
-  return $class->NEXT::ACTUAL::store_has_a(lc($set), @rest);
+  return $class->NEXT::ACTUAL::store_inflated_column(lc($set), @rest);
 }
 
-sub set_has_a {
+sub set_inflated_column {
   my ($class, $set, @rest) = @_;
-  return $class->NEXT::ACTUAL::set_has_a(lc($set), @rest);
+  return $class->NEXT::ACTUAL::set_inflated_column(lc($set), @rest);
 }
 
 sub get_column {
diff --git a/lib/DBIx/Class/CDBICompat/HasA.pm b/lib/DBIx/Class/CDBICompat/HasA.pm
index 43f7609..fe85214 100644
--- a/lib/DBIx/Class/CDBICompat/HasA.pm
+++ b/lib/DBIx/Class/CDBICompat/HasA.pm
@@ -13,75 +13,16 @@ sub has_a {
   $self->add_relationship($col, $f_class,
                             { "foreign.${pri}" => "self.${col}" },
                             { _type => 'has_a' } );
-  $self->mk_group_accessors('has_a' => $col);
+  $self->inflate_column($col,
+    { inflate => sub { 
+        my ($val, $self) = @_;
+        return ($self->search_related($col, {}, {}))[0]
+          || $f_class->new({ $pri => $val }); },
+      deflate => sub {
+        my ($val, $self) = @_;
+        $self->throw("$val isn't a $f_class") unless $val->isa($f_class);
+        return ($val->_ident_values)[0] } } );
   return 1;
 }
 
-sub get_has_a {
-  my ($self, $rel) = @_;
-  #warn $rel;
-  #warn join(', ', %{$self->{_column_data}});
-  return $self->{_relationship_data}{$rel}
-    if $self->{_relationship_data}{$rel};
-  return undef unless $self->get_column($rel);
-  #my ($pri) = (keys %{$self->_relationships->{$rel}{class}->_primaries})[0];
-  return $self->{_relationship_data}{$rel} =
-           ($self->search_related($rel, {}, {}))[0]
-           || do { 
-                my $f_class = $self->_relationships->{$rel}{class};
-                my ($pri) = keys %{$f_class->_primaries};
-                $f_class->new({ $pri => $self->get_column($rel) }); };
-}
-
-sub set_has_a {
-  my ($self, $rel, @rest) = @_;
-  my $ret = $self->store_has_a($rel, @rest);
-  $self->{_dirty_columns}{$rel} = 1;
-  return $ret;
-}
-
-sub store_has_a {
-  my ($self, $rel, $obj) = @_;
-  unless (ref $obj) {
-    delete $self->{_relationship_data}{$rel};
-    return $self->store_column($rel, $obj);
-  }
-  my $rel_obj = $self->_relationships->{$rel};
-  $self->throw( "Can't set $rel: object $obj is not of class ".$rel_obj->{class} )
-     unless $obj->isa($rel_obj->{class});
-  $self->{_relationship_data}{$rel} = $obj;
-  #warn "Storing $obj: ".($obj->_ident_values)[0];
-  $self->store_column($rel, ($obj->_ident_values)[0]);
-  return $obj;
-}
-
-sub new {
-  my ($class, $attrs, @rest) = @_;
-  my %hasa;
-  foreach my $key (keys %$attrs) {
-    my $rt = $class->_relationships->{$key}{attrs}{_type};
-    next unless $rt && $rt eq 'has_a' && ref $attrs->{$key};
-    $hasa{$key} = delete $attrs->{$key};
-  }
-  my $new = $class->NEXT::ACTUAL::new($attrs, @rest);
-  foreach my $key (keys %hasa) {
-    $new->store_has_a($key, $hasa{$key});
-  }
-  return $new;
-}
-
-sub _cond_value {
-  my ($self, $attrs, $key, $value) = @_;
-  if ( my $rel_obj = $self->_relationships->{$key} ) {
-    my $rel_type = $rel_obj->{attrs}{_type} || '';
-    if ($rel_type eq 'has_a' && ref $value) {
-      $self->throw( "Object $value is not of class ".$rel_obj->{class} )
-         unless $value->isa($rel_obj->{class});
-      $value = ($value->_ident_values)[0];
-      #warn $value;
-    }
-  }
-  return $self->NEXT::ACTUAL::_cond_value($attrs, $key, $value);
-}
-
 1;
diff --git a/lib/DBIx/Class/InflateColumn.pm b/lib/DBIx/Class/InflateColumn.pm
index 27ac2db..eea026a 100644
--- a/lib/DBIx/Class/InflateColumn.pm
+++ b/lib/DBIx/Class/InflateColumn.pm
@@ -14,6 +14,7 @@ sub inflate_column {
 
 sub _inflate_column_value {
   my ($self, $col, $value) = @_;
+  return $value unless defined $value; # NULL is NULL is NULL
   return $value unless exists $self->_columns->{$col}{_inflate_info}{inflate};
   my $inflate = $self->_columns->{$col}{_inflate_info}{inflate};
   return $inflate->($value, $self);
@@ -53,9 +54,11 @@ sub store_inflated_column {
     delete $self->{_inflated_column}{$col};
     return $self->store_column($col, $obj);
   }
+  my $deflated = $self->_deflate_column_value($col, $obj);
+           # Do this now so we don't store if it's invalid
   $self->{_inflated_column}{$col} = $obj;
   #warn "Storing $obj: ".($obj->_ident_values)[0];
-  $self->store_column($col, $self->_deflate_column_value($col, $obj));
+  $self->store_column($col, $deflated);
   return $obj;
 }