Patch + test for more informative exceptions on load_namespace a non-rs class

[dbsrgits/DBIx-Class.git] / lib / DBIx / Class / Schema.pm

diff --git a/lib/DBIx/Class/Schema.pm b/lib/DBIx/Class/Schema.pm
index 71faab7..a3c5bc1 100644 (file)
--- a/lib/DBIx/Class/Schema.pm
+++ b/lib/DBIx/Class/Schema.pm
@@ -173,8 +173,8 @@ sub _findallmod {
 }
 
 # returns a hash of $shortname => $fullname for every package
-#  found in the given namespaces ($shortname is with the $fullname's
-#  namespace stripped off)
+# found in the given namespaces ($shortname is with the $fullname's
+# namespace stripped off)
 sub _map_namespaces {
   my ($class, @namespaces) = @_;
 
@@ -190,6 +190,22 @@ sub _map_namespaces {
   @results_hash;
 }
 
+# returns the result_source_instance for the passed class/object,
+# or dies with an informative message (used by load_namespaces)
+sub _ns_get_rsrc_instance {
+  my $class = shift;
+  my $rs = ref ($_[0]) || $_[0];
+
+  if ($rs->can ('result_source_instance') ) {
+    return $rs->result_source_instance;
+  }
+  else {
+    $class->throw_exception (
+      "Attempt to load_namespaces() class $rs failed - are you sure this is a real Result Class?"
+    );
+  }
+}
+
 sub load_namespaces {
   my ($class, %args) = @_;
 
@@ -231,27 +247,27 @@ sub load_namespaces {
       my $result_class = $results{$result};
 
       my $rs_class = delete $resultsets{$result};
-      my $rs_set = $result_class->resultset_class;
+      my $rs_set = $class->_ns_get_rsrc_instance ($result_class)->resultset_class;
       
       if($rs_set && $rs_set ne 'DBIx::Class::ResultSet') {
         if($rs_class && $rs_class ne $rs_set) {
-          warn "We found ResultSet class '$rs_class' for '$result', but it seems "
+          carp "We found ResultSet class '$rs_class' for '$result', but it seems "
              . "that you had already set '$result' to use '$rs_set' instead";
         }
       }
       elsif($rs_class ||= $default_resultset_class) {
         $class->ensure_class_loaded($rs_class);
-        $result_class->resultset_class($rs_class);
+        $class->_ns_get_rsrc_instance ($result_class)->resultset_class($rs_class);
       }
 
-      my $source_name = $result_class->source_name || $result;
+      my $source_name = $class->_ns_get_rsrc_instance ($result_class)->source_name || $result;
 
       push(@to_register, [ $source_name, $result_class ]);
     }
   }
 
   foreach (sort keys %resultsets) {
-    warn "load_namespaces found ResultSet class $_ with no "
+    carp "load_namespaces found ResultSet class $_ with no "
       . 'corresponding Result class';
   }
 
@@ -344,7 +360,7 @@ sub load_classes {
 
         my $snsub = $comp_class->can('source_name');
         if(! $snsub ) {
-          warn "Failed to load $comp_class. Can't find source_name method. Is $comp_class really a full DBIC result class? Fix it, move it elsewhere, or make your load_classes call more specific.";
+          carp "Failed to load $comp_class. Can't find source_name method. Is $comp_class really a full DBIC result class? Fix it, move it elsewhere, or make your load_classes call more specific.";
           next;
         }
         $comp = $snsub->($comp_class) || $comp;
@@ -1350,7 +1366,7 @@ more information.
   sub compose_connection {
     my ($self, $target, @info) = @_;
 
-    warn "compose_connection deprecated as of 0.08000"
+    carp "compose_connection deprecated as of 0.08000"
       unless ($INC{"DBIx/Class/CDBICompat.pm"} || $warn++);
 
     my $base = 'DBIx::Class::ResultSetProxy';