X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FDBIx%2FClass%2FStorage%2FTxnScopeGuard.pm;h=1c2a0709980970e06d7c844afba6b696b740414d;hb=3a4c1d89695fc181340e6eb5d469485798f067e7;hp=06c510cec297fe62d914e50b77b8b1635a2e44fc;hpb=3b7f3eac72dbf39bb9a616ae4884e51f6d872c26;p=dbsrgits%2FDBIx-Class.git

diff --git a/lib/DBIx/Class/Storage/TxnScopeGuard.pm b/lib/DBIx/Class/Storage/TxnScopeGuard.pm
index 06c510c..1c2a070 100644
--- a/lib/DBIx/Class/Storage/TxnScopeGuard.pm
+++ b/lib/DBIx/Class/Storage/TxnScopeGuard.pm
@@ -2,6 +2,7 @@ package DBIx::Class::Storage::TxnScopeGuard;
 
 use strict;
 use warnings;
+use Carp ();
 
 sub new {
   my ($class, $storage) = @_;
@@ -23,19 +24,20 @@ sub DESTROY {
   return if $dismiss;
 
   my $exception = $@;
-
-  $DB::single = 1;
-
-  local $@;
-  eval { $storage->txn_rollback };
-  my $rollback_exception = $@;
-  if($rollback_exception) {
-    my $exception_class = "DBIx::Class::Storage::NESTED_ROLLBACK_EXCEPTION";
-
-    $storage->throw_exception(
-      "Transaction aborted: ${exception}. "
-      . "Rollback failed: ${rollback_exception}"
-    ) unless $rollback_exception =~ /$exception_class/;
+  Carp::cluck("A DBIx::Class::Storage::TxnScopeGuard went out of scope without explicit commit or an error - bad")
+    unless $exception; 
+  {
+    local $@;
+    eval { $storage->txn_rollback };
+    my $rollback_exception = $@;
+    if($rollback_exception) {
+      my $exception_class = "DBIx::Class::Storage::NESTED_ROLLBACK_EXCEPTION";
+
+      $storage->throw_exception(
+        "Transaction aborted: ${exception}. "
+        . "Rollback failed: ${rollback_exception}"
+      ) unless $rollback_exception =~ /$exception_class/;
+    }
   }
 }
 
@@ -45,7 +47,7 @@ __END__
 
 =head1 NAME
 
-DBIx::Class::Storage::TxnScopeGuard
+DBIx::Class::Storage::TxnScopeGuard - Scope-based transaction handling
 
 =head1 SYNOPSIS
 
@@ -68,14 +70,15 @@ right thing with transactions in DBIx::Class.
 
 =head2 new
 
-Creating an instance of this class will start a new transaction. Expects a
+Creating an instance of this class will start a new transaction (by
+implicitly calling L<DBIx::Class::Storage/txn_begin>. Expects a
 L<DBIx::Class::Storage> object as its only argument.
 
 =head2 commit
 
 Commit the transaction, and stop guarding the scope. If this method is not
-called (i.e. an exception is thrown) and this object goes out of scope then
-the transaction is rolled back.
+called and this object goes out of scope (i.e. an exception is thrown) then
+the transaction is rolled back, via L<DBIx::Class::Storage/txn_rollback>
 
 =cut