From: Rafael Kitover <rkitover@cpan.org>
Date: Mon, 22 Mar 2010 23:18:39 +0000 (-0400)
Subject: check for table moniker clashes (patch from ribasushi)
X-Git-Tag: 0.06000~34
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=dbsrgits%2FDBIx-Class-Schema-Loader.git;a=commitdiff_plain;h=27305cc132ba6ec1543771c1842dceeb41956063

check for table moniker clashes (patch from ribasushi)
---

diff --git a/Changes b/Changes
index 1200e1f..0119f2c 100644
--- a/Changes
+++ b/Changes
@@ -1,5 +1,6 @@
 Revision history for Perl extension DBIx::Class::Schema::Loader
 
+        - croak if several tables reduce to an identical moniker (ribasushi)
         - better type info for Sybase ASE
         - better type info for Pg: sets sequence for serials, handles numerics
           without precision
diff --git a/lib/DBIx/Class/Schema/Loader/Base.pm b/lib/DBIx/Class/Schema/Loader/Base.pm
index dbfa47f..e0a42fa 100644
--- a/lib/DBIx/Class/Schema/Loader/Base.pm
+++ b/lib/DBIx/Class/Schema/Loader/Base.pm
@@ -932,6 +932,34 @@ sub _load_tables {
     }
 
     $self->_make_src_class($_) for @tables;
+
+
+    # sanity-check for moniker clashes
+    my $inverse_moniker_idx;
+    for (keys %{$self->monikers}) {
+      push @{$inverse_moniker_idx->{$self->monikers->{$_}}}, $_;
+    }
+
+    my @clashes;
+    for (keys %$inverse_moniker_idx) {
+      my $tables = $inverse_moniker_idx->{$_};
+      if (@$tables > 1) {
+        push @clashes, sprintf ("tables %s reduced to the same source moniker '%s'",
+          join (', ', map { "'$_'" } @$tables),
+          $_,
+        );
+      }
+    }
+
+    if (@clashes) {
+      die   'Unable to load schema - chosen moniker/class naming style results in moniker clashes. '
+          . 'Either change the naming style, or supply an explicit moniker_map: '
+          . join ('; ', @clashes)
+          . "\n"
+      ;
+    }
+
+
     $self->_setup_src_meta($_) for @tables;
 
     if(!$self->skip_relationships) {