From: Peter Rabbitson <ribasushi@cpan.org>
Date: Fri, 3 Jul 2015 13:23:14 +0000 (+0200)
Subject: Switch a couple 'no-brainer' spots to _resolve_relationship_condition
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=dbsrgits%2FDBIx-Class.git;a=commitdiff_plain;h=b70a4bb5fb07064a3a3255d0647d768f6c219061

Switch a couple 'no-brainer' spots to _resolve_relationship_condition

More to come, all of this should result in no functional changes
---

diff --git a/lib/DBIx/Class/Relationship/Base.pm b/lib/DBIx/Class/Relationship/Base.pm
index 04b1a88..f5d34f8 100644
--- a/lib/DBIx/Class/Relationship/Base.pm
+++ b/lib/DBIx/Class/Relationship/Base.pm
@@ -521,10 +521,27 @@ sub related_resultset {
     my $rel_info = $rsrc->relationship_info($rel)
       or $self->throw_exception( "No such relationship '$rel'" );
 
-    my ($cond, $is_crosstable) = $rsrc->_resolve_condition( $rel_info->{cond}, $rel, $self, $rel );
+    my $cond_res = $rsrc->_resolve_relationship_condition(
+      rel_name => $rel,
+      self_result_object => $self,
+
+      # this may look weird, but remember that we are making a resultset
+      # out of an existing object, with the new source being at the head
+      # of the FROM chain. Having a 'me' alias is nothing but expected there
+      foreign_alias => 'me',
+
+      self_alias => "!!!\xFF()!!!_SHOULD_NEVER_BE_SEEN_IN_USE_!!!()\xFF!!!",
+
+      # not strictly necessary, but shouldn't hurt either
+      require_join_free_condition => !!(ref $rel_info->{cond} ne 'CODE'),
+    );
 
     # keep in mind that the following if() block is part of a do{} - no return()s!!!
-    if ($is_crosstable and ref $rel_info->{cond} eq 'CODE') {
+    if (
+      ! $cond_res->{join_free_condition}
+        and
+      ref $rel_info->{cond} eq 'CODE'
+    ) {
 
       # A WHOREIFFIC hack to reinvoke the entire condition resolution
       # with the correct alias. Another way of doing this involves a
@@ -551,12 +568,13 @@ sub related_resultset {
       )->search_related('me', undef, $rel_info->{attrs})
     }
     else {
-      my $attrs = { %{ $rel_info->{attrs} } };
 
       # FIXME - this conditional doesn't seem correct - got to figure out
       # at some point what it does. Also the entire UNRESOLVABLE_CONDITION
       # business seems shady - we could simply not query *at all*
-      if ($cond eq UNRESOLVABLE_CONDITION) {
+      my $attrs;
+      if ( $cond_res->{join_free_condition} eq UNRESOLVABLE_CONDITION ) {
+        $attrs = { %{$rel_info->{attrs}} };
         my $reverse = $rsrc->reverse_relationship_info($rel);
         foreach my $rev_rel (keys %$reverse) {
           if ($reverse->{$rev_rel}{attrs}{accessor} && $reverse->{$rev_rel}{attrs}{accessor} eq 'multi') {
@@ -566,27 +584,11 @@ sub related_resultset {
           }
         }
       }
-      elsif (ref $cond eq 'ARRAY') {
-        $cond = [ map {
-          if (ref $_ eq 'HASH') {
-            my $hash;
-            foreach my $key (keys %$_) {
-              my $newkey = $key !~ /\./ ? "me.$key" : $key;
-              $hash->{$newkey} = $_->{$key};
-            }
-            $hash;
-          } else {
-            $_;
-          }
-        } @$cond ];
-      }
-      elsif (ref $cond eq 'HASH') {
-       foreach my $key (grep { ! /\./ } keys %$cond) {
-          $cond->{"me.$key"} = delete $cond->{$key};
-        }
-      }
 
-      $rsrc->related_source($rel)->resultset->search( $cond, $attrs );
+      $rsrc->related_source($rel)->resultset->search(
+        $cond_res->{join_free_condition},
+        $attrs || $rel_info->{attrs},
+      );
     }
   };
 }
diff --git a/lib/DBIx/Class/ResultSource.pm b/lib/DBIx/Class/ResultSource.pm
index 3c45662..c67fa45 100644
--- a/lib/DBIx/Class/ResultSource.pm
+++ b/lib/DBIx/Class/ResultSource.pm
@@ -1715,7 +1715,11 @@ sub _resolve_join {
                -alias => $as,
                -relation_chain_depth => ( $seen->{-relation_chain_depth} || 0 ) + 1,
              },
-             scalar $self->_resolve_condition($rel_info->{cond}, $as, $alias, $join)
+             $self->_resolve_relationship_condition(
+               rel_name => $join,
+               self_alias => $alias,
+               foreign_alias => $as,
+             )->{condition},
           ];
   }
 }
diff --git a/lib/DBIx/Class/ResultSource/RowParser.pm b/lib/DBIx/Class/ResultSource/RowParser.pm
index 8ed29b3..83be406 100644
--- a/lib/DBIx/Class/ResultSource/RowParser.pm
+++ b/lib/DBIx/Class/ResultSource/RowParser.pm
@@ -197,26 +197,12 @@ sub _resolve_collapse {
       is_single => ( $inf->{attrs}{accessor} && $inf->{attrs}{accessor} ne 'multi' ),
       is_inner => ( ( $inf->{attrs}{join_type} || '' ) !~ /^left/i),
       rsrc => $self->related_source($rel),
+      fk_map => $self->_resolve_relationship_condition(
+        rel_name => $rel,
+        self_alias => "\xFE", # irrelevant
+        foreign_alias => "\xFF", # irrelevant
+      )->{identity_map},
     };
-
-    # FIME - need to use _resolve_cond here instead
-    my $cond = $inf->{cond};
-
-    if (
-      ref $cond eq 'HASH'
-        and
-      keys %$cond
-        and
-      ! defined first { $_ !~ /^foreign\./ } (keys %$cond)
-        and
-      ! defined first { $_ !~ /^self\./ } (values %$cond)
-    ) {
-      for my $f (keys %$cond) {
-        my $s = $cond->{$f};
-        $_ =~ s/^ (?: foreign | self ) \.//x for ($f, $s);
-        $relinfo->{$rel}{fk_map}{$s} = $f;
-      }
-    }
   }
 
   # inject non-left fk-bridges from *INNER-JOINED* children (if any)
diff --git a/lib/DBIx/Class/Row.pm b/lib/DBIx/Class/Row.pm
index a4a18b9..5425fd8 100644
--- a/lib/DBIx/Class/Row.pm
+++ b/lib/DBIx/Class/Row.pm
@@ -1174,16 +1174,21 @@ sub copy {
 
     next unless $rel_info->{attrs}{cascade_copy};
 
-    my $resolved = $rsrc->_resolve_condition(
-      $rel_info->{cond}, $rel_name, $new, $rel_name
-    );
-
+    my $foreign_vals;
     my $copied = $rel_names_copied->{ $rel_info->{source} } ||= {};
-    foreach my $related ($self->search_related($rel_name)->all) {
-      $related->copy($resolved)
-        unless $copied->{$related->ID}++;
-    }
 
+    $copied->{$_->ID}++ or $_->copy(
+
+      $foreign_vals ||= $rsrc->_resolve_relationship_condition(
+        infer_values_based_on => {},
+        rel_name => $rel_name,
+        self_result_object => $new,
+
+        self_alias => "\xFE", # irrelevant
+        foreign_alias => "\xFF", # irrelevant,
+      )->{inferred_values}
+
+    ) for $self->search_related($rel_name)->all;
   }
   return $new;
 }