Merge 'trunk' into 'DBIx-Class-current'

[dbsrgits/DBIx-Class-Historic.git] / lib / DBIx / Class / ResultSet.pm

diff --git a/lib/DBIx/Class/ResultSet.pm b/lib/DBIx/Class/ResultSet.pm
index 1963b61..2b347ed 100644 (file)
--- a/lib/DBIx/Class/ResultSet.pm
+++ b/lib/DBIx/Class/ResultSet.pm
@@ -196,44 +196,44 @@ call it as C<search(undef, \%attrs)>.
 
 sub search {
   my $self = shift;
-
-  my $rs;
-  if( @_ ) {
     
-    my $attrs = { %{$self->{attrs}} };
-    my $having = delete $attrs->{having};
-    $attrs = { %$attrs, %{ pop(@_) } } if @_ > 1 and ref $_[$#_] eq 'HASH';
-
-    my $where = (@_
-                  ? ((@_ == 1 || ref $_[0] eq "HASH")
-                      ? shift
-                      : ((@_ % 2)
-                          ? $self->throw_exception(
-                              "Odd number of arguments to search")
-                          : {@_}))
-                  : undef());
-    if (defined $where) {
-      $attrs->{where} = (defined $attrs->{where}
-                ? { '-and' =>
-                    [ map { ref $_ eq 'ARRAY' ? [ -or => $_ ] : $_ }
-                        $where, $attrs->{where} ] }
-                : $where);
-    }
-
-    if (defined $having) {
-      $attrs->{having} = (defined $attrs->{having}
-                ? { '-and' =>
-                    [ map { ref $_ eq 'ARRAY' ? [ -or => $_ ] : $_ }
-                        $having, $attrs->{having} ] }
-                : $having);
-    }
+  my $attrs = { %{$self->{attrs}} };
+  my $having = delete $attrs->{having};
+  $attrs = { %$attrs, %{ pop(@_) } } if @_ > 1 and ref $_[$#_] eq 'HASH';
+
+  my $where = (@_
+                ? ((@_ == 1 || ref $_[0] eq "HASH")
+                    ? shift
+                    : ((@_ % 2)
+                        ? $self->throw_exception(
+                            "Odd number of arguments to search")
+                        : {@_}))
+                : undef());
+  if (defined $where) {
+    $attrs->{where} = (defined $attrs->{where}
+              ? { '-and' =>
+                  [ map { ref $_ eq 'ARRAY' ? [ -or => $_ ] : $_ }
+                      $where, $attrs->{where} ] }
+              : $where);
+  }
 
-    $rs = (ref $self)->new($self->result_source, $attrs);
+  if (defined $having) {
+    $attrs->{having} = (defined $attrs->{having}
+              ? { '-and' =>
+                  [ map { ref $_ eq 'ARRAY' ? [ -or => $_ ] : $_ }
+                      $having, $attrs->{having} ] }
+              : $having);
   }
-  else {
-    $rs = $self;
-    $rs->reset;
+
+  my $rs = (ref $self)->new($self->result_source, $attrs);
+
+  unless (@_) { # no search, effectively just a clone
+    my $rows = $self->get_cache;
+    if( @{$rows} ) {
+      $rs->set_cache($rows);
+    }
   }
+  
   return (wantarray ? $rs->all : $rs);
 }
 
@@ -277,8 +277,8 @@ a row by its primary key:
 
   my $cd = $schema->resultset('CD')->find(5);
 
-You can also find a row by a specific key or unique constraint by specifying
-the C<key> attribute. For example:
+You can also find a row by a specific unique constraint using the C<key>
+attribute. For example:
 
   my $cd = $schema->resultset('CD')->find('Massive Attack', 'Mezzanine', { key => 'artist_title' });
 
@@ -308,20 +308,23 @@ sub find {
   my $attrs = (@_ > 1 && ref $_[$#_] eq 'HASH' ? pop(@_) : {});
 
   # Parse out a hash from input
-  my @unique_cols = exists $attrs->{key}
+  my @cols = exists $attrs->{key}
     ? $self->result_source->unique_constraint_columns($attrs->{key})
     : $self->result_source->primary_columns;
 
-  my %hash;
+  my $hash;
   if (ref $_[0] eq 'HASH') {
-    %hash = %{ $_[0] };
+    $hash = { %{$_[0]} };
   }
-  elsif (@_ == @unique_cols) {
-    @hash{@unique_cols} = @_;
+  elsif (@_ == @cols) {
+    $hash = {};
+    @{$hash}{@cols} = @_;
   }
   else {
-    # Hack for CDBI queries
-    %hash = @_;
+    $self->throw_exception(
+      "Arguments to find must be a hashref or match the number of columns in the "
+        . exists $attrs->{key} ? "$attrs->{key} unique constraint" : "primary key"
+    );
   }
 
   # Check the hash we just parsed against our source's unique constraints
@@ -332,21 +335,21 @@ sub find {
     "Can't find unless a primary key or unique constraint is defined"
   ) unless @constraint_names;
 
-  my @unique_hashes;
+  my @unique_queries;
   foreach my $name (@constraint_names) {
     my @unique_cols = $self->result_source->unique_constraint_columns($name);
-    my %unique_hash = $self->_unique_hash(\%hash, \@unique_cols);
+    my $unique_query = $self->_build_unique_query($hash, \@unique_cols);
 
     # Add the ResultSet's alias
-    foreach my $key (grep { ! m/\./ } keys %unique_hash) {
-      $unique_hash{"$self->{attrs}{alias}.$key"} = delete $unique_hash{$key};
+    foreach my $key (grep { ! m/\./ } keys %$unique_query) {
+      $unique_query->{"$self->{attrs}{alias}.$key"} = delete $unique_query->{$key};
     }
 
-    push @unique_hashes, \%unique_hash if %unique_hash;
+    push @unique_queries, $unique_query if %$unique_query;
   }
 
   # Handle cases where the ResultSet already defines the query
-  my $query = @unique_hashes ? \@unique_hashes : undef;
+  my $query = @unique_queries ? \@unique_queries : undef;
 
   # Run the query
   if (keys %$attrs) {
@@ -360,26 +363,19 @@ sub find {
   }
 }
 
-# _unique_hash
+# _build_unique_query
 #
-# Constrain the specified hash based on the specific column names.
-
-sub _unique_hash {
-  my ($self, $hash, $unique_cols) = @_;
+# Constrain the specified query hash based on the specified column names.
 
-  # Ugh, CDBI lowercases column names
-  if (exists $INC{'DBIx/Class/CDBICompat/ColumnCase.pm'}) {
-    foreach my $key (keys %$hash) {
-      $hash->{lc $key} = delete $hash->{$key};
-    }
-  }
+sub _build_unique_query {
+  my ($self, $query, $unique_cols) = @_;
 
-  my %unique_hash =
-    map  { $_ => $hash->{$_} }
-    grep { exists $hash->{$_} }
+  my %unique_query =
+    map  { $_ => $query->{$_} }
+    grep { exists $query->{$_} }
     @$unique_cols;
 
-  return %unique_hash;
+  return \%unique_query;
 }
 
 =head2 search_related