Emulate that CDBI throws out all changed columns and reloads them on

[dbsrgits/DBIx-Class.git] / lib / DBIx / Class / CDBICompat / LazyLoading.pm

diff --git a/lib/DBIx/Class/CDBICompat/LazyLoading.pm b/lib/DBIx/Class/CDBICompat/LazyLoading.pm
index 48a3110..b3d18e9 100644 (file)
--- a/lib/DBIx/Class/CDBICompat/LazyLoading.pm
+++ b/lib/DBIx/Class/CDBICompat/LazyLoading.pm
@@ -11,6 +11,22 @@ sub resultset_instance {
   return $rs;
 }
 
+
+# Emulate that CDBI throws out all changed columns and reloads them on 
+# request in case the database modifies the new value (say, via a trigger)
+sub update {
+    my $self = shift;
+    
+    my @dirty_columns = keys %{$self->{_dirty_columns}};
+    
+    my $ret = $self->next::method(@_);
+    
+    delete $self->{_column_data}{$_} for @dirty_columns;
+    
+    return $ret;
+}
+
+
 sub get_column {
   my ($self, $col) = @_;
   if ((ref $self) && (!exists $self->{'_column_data'}{$col})
@@ -22,6 +38,33 @@ sub get_column {
   $self->next::method(@_[1..$#_]);
 }
 
+# CDBI does not explicitly declare auto increment columns, so
+# we just clear out our primary columns before copying.
+sub copy {
+  my($self, $changes) = @_;
+
+  for my $col ($self->primary_columns) {
+    $changes->{$col} = undef unless exists $changes->{$col};
+  }
+  
+  return $self->next::method($changes);
+}
+
+sub discard_changes {
+  my($self) = shift;
+
+  delete $self->{_column_data}{$_} for $self->is_changed;
+  delete $self->{_dirty_columns};
+  delete $self->{_relationship_data};
+
+  return $self;
+}
+
+sub _ident_cond {
+  my ($class) = @_;
+  return join(" AND ", map { "$_ = ?" } $class->primary_columns);
+}
+
 sub _flesh {
   my ($self, @groups) = @_;
   @groups = ('All') unless @groups;