From: David Kamholz <dkamholz@cpan.org>
Date: Sun, 12 Feb 2006 19:35:58 +0000 (+0000)
Subject: put last change in trunk
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=d20bb28ea937ea4f890aa463452414a764bc24ef;p=dbsrgits%2FDBIx-Class-Historic.git

put last change in trunk
---

diff --git a/Changes b/Changes
index 922ef98..183046b 100644
--- a/Changes
+++ b/Changes
@@ -1,5 +1,7 @@
 Revision history for DBIx::Class
 
+        - allow specification of related columns via cols attr when primary 
+          keys of the related table are not fetched
         - add horrific fix to make Oracle's retarded limit syntax work
 
 0.05003 2006-02-08 17:50:20
diff --git a/lib/DBIx/Class/Row.pm b/lib/DBIx/Class/Row.pm
index 3606235..bf4a526 100644
--- a/lib/DBIx/Class/Row.pm
+++ b/lib/DBIx/Class/Row.pm
@@ -278,17 +278,16 @@ sub inflate_result {
   PRE: foreach my $pre (keys %{$prefetch||{}}) {
     my $pre_source = $source->related_source($pre);
     $class->throw_exception("Can't prefetch non-existant relationship ${pre}") unless $pre_source;
-    my $fetched = $pre_source->result_class->inflate_result(
-                    $pre_source, @{$prefetch->{$pre}});
+    my $fetched;
+    unless ($pre_source->primary_columns == grep { exists $prefetch->{$pre}[0]{$_} 
+       and !defined $prefetch->{$pre}[0]{$_} } $pre_source->primary_columns)
+    {
+      $fetched = $pre_source->result_class->inflate_result(
+                      $pre_source, @{$prefetch->{$pre}});      
+    }
     my $accessor = $source->relationship_info($pre)->{attrs}{accessor};
     $class->throw_exception("No accessor for prefetched $pre")
       unless defined $accessor;
-    PRIMARY: foreach my $pri ($pre_source->primary_columns) {
-      unless (defined $fetched->get_column($pri)) {
-        undef $fetched;
-        last PRIMARY;
-      }
-    }
     if ($accessor eq 'single') {
       $new->{_relationship_data}{$pre} = $fetched;
     } elsif ($accessor eq 'filter') {
diff --git a/t/run/16joins.tl b/t/run/16joins.tl
index 5307067..a3c9383 100644
--- a/t/run/16joins.tl
+++ b/t/run/16joins.tl
@@ -7,7 +7,7 @@ BEGIN {
     eval "use DBD::SQLite";
     plan $@
         ? ( skip_all => 'needs DBD::SQLite for testing' )
-        : ( tests => 40 );
+        : ( tests => 41 );
 }
 
 # test the abstract join => SQL generator
@@ -132,6 +132,15 @@ $trace->close;
 unlink 't/var/dbic.trace';
 is($selects, 1, 'prefetch ran only 1 select statement');
 
+# test for partial prefetch via cols attr
+my $cd = $schema->resultset('CD')->find(1,
+    {
+      cols => [qw/title artist.name/], 
+      join => 'artist'
+    }
+);
+ok(eval { $cd->artist->name eq 'Caterwauler McCrae' }, 'single related column prefetched');
+
 # start test for nested prefetch SELECT count
 unlink 't/var/dbic.trace' if -e 't/var/dbic.trace';
 DBI->trace(1, 't/var/dbic.trace');
@@ -165,7 +174,7 @@ is($selects, 1, 'nested prefetch ran exactly 1 select statement (excluding colum
 unlink 't/var/dbic.trace' if -e 't/var/dbic.trace';
 DBI->trace(1, 't/var/dbic.trace');
 
-my $cd = $schema->resultset('CD')->find(1, { prefetch => 'artist' });
+$cd = $schema->resultset('CD')->find(1, { prefetch => 'artist' });
 
 is($cd->{_inflated_column}{artist}->name, 'Caterwauler McCrae', 'artist prefetched correctly on find');