From: Matt S Trout <mst@shadowcat.co.uk>
Date: Tue, 2 Aug 2005 16:46:41 +0000 (+0000)
Subject: Added count_from_sql, refactored andyg's count_related implementation
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=fcbc5f294ee9df62da9d6123c1cffda1f0368aa8;p=dbsrgits%2FDBIx-Class-Historic.git

Added count_from_sql, refactored andyg's count_related implementation
---

diff --git a/lib/DBIx/Class/Relationship.pm b/lib/DBIx/Class/Relationship.pm
index 87f8f11..569de9b 100644
--- a/lib/DBIx/Class/Relationship.pm
+++ b/lib/DBIx/Class/Relationship.pm
@@ -104,6 +104,18 @@ sub _cond_value {
 
 sub search_related {
   my $self = shift;
+  $self->_from_sql_related('retrieve', @_);
+}
+
+sub count_related {
+  my $self = shift;
+  $self->_from_sql_related('count', @_);
+}
+
+sub _from_sql_related {
+  my $self = shift;
+  my $op = shift;
+  my $meth = "${op}_from_sql";
   my $rel = shift;
   my $attrs = { };
   if (@_ > 1 && ref $_[$#_] eq 'HASH') {
@@ -118,11 +130,11 @@ sub search_related {
     my $query = ((@_ > 1) ? {@_} : shift);
     $s_cond = $self->_cond_resolve($query, $attrs);
   }
-  $attrs->{_action} = 'convert';
+  $attrs->{_action} = 'convert'; # shouldn't we resolve the cond to something
+                                 # to merge into the AST really?
   my ($cond) = $self->_cond_resolve($rel_obj->{cond}, $attrs);
   $cond = "${s_cond} AND ${cond}" if $s_cond;
-  return $rel_obj->{class}->retrieve_from_sql($cond, @{$attrs->{bind} || []},
-                                                $attrs);
+  return $rel_obj->{class}->$meth($cond, @{$attrs->{bind} || []}, $attrs);
 }
 
 sub create_related {
@@ -182,22 +194,6 @@ sub update_from_related {
   $self->update;
 }
 
-sub count_related {
-  my $self = shift;
-  my $rel = shift;
-  my $rel_obj = $self->_relationships->{$rel};
-  $self->throw( "No such relationship ${rel}" ) unless $rel_obj;
-  my $cond = $rel_obj->{cond};
-  my $count_cond = {};
-  foreach my $key (keys %$cond) {
-    $key =~ m/^foreign\.([^\.]+)$/;
-    my $count_key = $1;
-    $cond->{$key} =~ m/^self\.([^\.]+)$/;
-    $count_cond->{$count_key} = $self->get_column($1);
-  }
-  return $rel_obj->{class}->count( $count_cond );
-}
-
 1;
 
 =back
diff --git a/lib/DBIx/Class/Table.pm b/lib/DBIx/Class/Table.pm
index ec750fe..b02f071 100644
--- a/lib/DBIx/Class/Table.pm
+++ b/lib/DBIx/Class/Table.pm
@@ -170,6 +170,19 @@ sub retrieve_from_sql {
   return $class->sth_to_objects($sth, \@vals, \@cols, { where => $cond });
 }
 
+sub count_from_sql {
+  my ($class, $cond, @vals) = @_;
+  $cond =~ s/^\s*WHERE//i;
+  my $attrs = (ref $vals[$#vals] eq 'HASH' ? pop(@vals) : {});
+  my @cols = 'COUNT(*)';
+  my $sth = $class->_get_sth( 'select', \@cols, $class->_table_name, $cond);
+  #warn "$cond @vals";
+  $sth->execute(@vals);
+  my ($count) = $sth->fetchrow_array;
+  $sth->finish;
+  return $count;
+}
+
 sub count {
   my $class = shift;
   my $attrs = { };
@@ -178,12 +191,7 @@ sub count {
   }
   my $query    = ref $_[0] eq "HASH" ? shift: {@_};
   my ($cond, @param)  = $class->_cond_resolve($query, $attrs);
-  my $sth = $class->_get_sth( 'select', [ 'COUNT(*)' ],
-                                $class->_table_name, $cond );
-  $sth->execute(@param);
-  my ($count) = $sth->fetchrow_array;
-  $sth->finish;
-  return $count;
+  return $class->count_from_sql($cond, @param, $attrs);
 }
 
 sub sth_to_objects {