X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FDBIx%2FClass%2FResultSource.pm;h=2d54ec0a39d31027f6dcc5f94904b226a3ef770f;hb=e084cb2bccea6e55372bb772ab02b7c9804542a1;hp=996beff5484d54315547839be143a9fe13bb1ebd;hpb=0e14d9181e757764af264ea104ae566fab8dcdb4;p=dbsrgits%2FDBIx-Class-Historic.git

diff --git a/lib/DBIx/Class/ResultSource.pm b/lib/DBIx/Class/ResultSource.pm
index 996beff..2d54ec0 100644
--- a/lib/DBIx/Class/ResultSource.pm
+++ b/lib/DBIx/Class/ResultSource.pm
@@ -1331,6 +1331,7 @@ sub add_relationship {
   my %rels = %{ $self->_relationships };
   $rels{$rel} = { class => $f_source_name,
                   source => $f_source_name,
+                  _original_name => $rel,
                   cond  => $cond,
                   attrs => $attrs };
   $self->_relationships(\%rels);
@@ -1567,20 +1568,23 @@ sub _minimal_valueset_satisfying_constraint {
 
   my $cols;
   for my $col ($self->unique_constraint_columns($args->{constraint_name}) ) {
-    if( ! exists $vals->{$col} ) {
-      $cols->{missing}{$col} = 1;
+    if( ! exists $vals->{$col} or ( $vals->{$col}||'' ) eq UNRESOLVABLE_CONDITION ) {
+      $cols->{missing}{$col} = undef;
     }
     elsif( ! defined $vals->{$col} ) {
-      $cols->{$args->{carp_on_nulls} ? 'undefined' : 'missing'}{$col} = 1;
+      $cols->{$args->{carp_on_nulls} ? 'undefined' : 'missing'}{$col} = undef;
     }
     else {
-      $cols->{present}{$col} = 1;
+      # we need to inject back the '=' as _extract_fixed_condition_columns
+      # will strip it from literals and values alike, resulting in an invalid
+      # condition in the end
+      $cols->{present}{$col} = { '=' => $vals->{$col} };
     }
 
     $cols->{fc}{$col} = 1 if (
-      ! ( $cols->{missing} || {})->{$col}
+      ( ! $cols->{missing} or ! exists $cols->{missing}{$col} )
         and
-      $args->{columns_info}{$col}{_filter_info}
+      keys %{ $args->{columns_info}{$col}{_filter_info} || {} }
     );
   }
 
@@ -1609,10 +1613,7 @@ sub _minimal_valueset_satisfying_constraint {
     ));
   }
 
-  return { map
-    { $_ => $vals->{$_} }
-    ( keys %{$cols->{present}}, keys %{$cols->{undefined}} )
-  };
+  return { map { %{ $cols->{$_}||{} } } qw(present undefined) };
 }
 
 # Returns the {from} structure used to express JOIN conditions
@@ -1809,7 +1810,7 @@ sub _resolve_condition {
 
   # _resolve_relationship_condition always returns qualified cols even in the
   # case of join_free_condition, but nothing downstream expects this
-  if (ref $res[0] eq 'HASH' and ($is_objlike[0] or $is_objlike[1]) ) {
+  if ($rc->{join_free_condition} and ref $res[0] eq 'HASH') {
     $res[0] = { map
       { ($_ =~ /\.(.+)/) => $res[0]{$_} }
       keys %{$res[0]}
@@ -1833,20 +1834,23 @@ Internals::SvREADONLY($UNRESOLVABLE_CONDITION => 1);
 # metadata
 #
 ## self-explanatory API, modeled on the custom cond coderef:
-# rel_name
-# foreign_alias
-# foreign_values
-# self_alias
-# self_result_object
-# require_join_free_condition
-# infer_values_based_on (either not supplied or a hashref, implies require_join_free_condition)
-# condition (optional, derived from $self->rel_info(rel_name))
+# rel_name              => (scalar)
+# foreign_alias         => (scalar)
+# foreign_values        => (either not supplied, or a hashref, or a foreign ResultObject (to be ->get_columns()ed), or plain undef )
+# self_alias            => (scalar)
+# self_result_object    => (either not supplied or a result object)
+# require_join_free_condition => (boolean, throws on failure to construct a JF-cond)
+# infer_values_based_on => (either not supplied or a hashref, implies require_join_free_condition)
+# condition             => (sqla cond struct, optional, defeaults to from $self->rel_info(rel_name)->{cond})
 #
 ## returns a hash
-# condition
-# identity_map
-# join_free_condition (maybe unset)
-# inferred_values (always either complete or unset)
+# condition           => (a valid *likely fully qualified* sqla cond structure)
+# identity_map        => (a hashref of foreign-to-self *unqualified* column equality names)
+# join_free_condition => (a valid *fully qualified* sqla cond structure, maybe unset)
+# inferred_values     => (in case of an available join_free condition, this is a hashref of
+#                         *unqualified* column/value *EQUALITY* pairs, representing an amalgamation
+#                         of the JF-cond parse and infer_values_based_on
+#                         always either complete or unset)
 #
 sub _resolve_relationship_condition {
   my $self = shift;
@@ -1861,12 +1865,12 @@ sub _resolve_relationship_condition {
   $self->throw_exception("Arguments 'self_alias' and 'foreign_alias' may not be identical")
     if $args->{self_alias} eq $args->{foreign_alias};
 
-  my $exception_rel_id = "relationship '$args->{rel_name}' on source '@{[ $self->source_name ]}'";
-
   my $rel_info = $self->relationship_info($args->{rel_name})
 # TEMP
 #    or $self->throw_exception( "No such $exception_rel_id" );
-    or carp_unique("Requesting resolution on non-existent $exception_rel_id: fix your code *soon*, as it will break with the next major version");
+    or carp_unique("Requesting resolution on non-existent relationship '$args->{rel_name}' on source '@{[ $self->source_name ]}': fix your code *soon*, as it will break with the next major version");
+
+  my $exception_rel_id = "relationship '$rel_info->{_original_name}' on source '@{[ $self->source_name ]}'";
 
   $self->throw_exception("No practical way to resolve $exception_rel_id between two data structures")
     if exists $args->{self_result_object} and exists $args->{foreign_values};
@@ -1878,34 +1882,42 @@ sub _resolve_relationship_condition {
 
   $args->{condition} ||= $rel_info->{cond};
 
-# TEMP
-#  my $rel_rsrc = $self->related_source($args->{rel_name});
-
-  if (exists $args->{self_result_object}) {
-    $self->throw_exception( "Argument 'self_result_object' must be an object of class '@{[ $self->result_class ]}'" )
-      unless defined blessed $args->{self_result_object};
+  $self->throw_exception( "Argument 'self_result_object' must be an object of class '@{[ $self->result_class ]}'" )
+    if (
+      exists $args->{self_result_object}
+        and
+      ( ! defined blessed $args->{self_result_object} or ! $args->{self_result_object}->isa($self->result_class) )
+    )
+  ;
 
-    $self->throw_exception( "Object '$args->{self_result_object}' must be of class '@{[ $self->result_class ]}'" )
-      unless $args->{self_result_object}->isa($self->result_class);
-  }
+  my $rel_rsrc = $self->related_source($args->{rel_name});
 
   if (exists $args->{foreign_values}) {
     if (defined blessed $args->{foreign_values}) {
-      $self->throw_exception( "Object supplied as 'foreign_values' ($args->{foreign_values}) must be of class '$rel_info->{class}'" )
-        unless $args->{foreign_values}->isa($rel_info->{class});
+
+      $self->throw_exception( "Objects supplied as 'foreign_values' ($args->{foreign_values}) must inherit from DBIx::Class::Row" )
+        unless $args->{foreign_values}->isa('DBIx::Class::Row');
+
+      carp_unique(
+        "Objects supplied as 'foreign_values' ($args->{foreign_values}) "
+      . "usually should inherit from the related ResultClass ('@{[ $rel_rsrc->result_class ]}'), "
+      . "perhaps you've made a mistake invoking the condition resolver?"
+      ) unless $args->{foreign_values}->isa($rel_rsrc->result_class);
 
       $args->{foreign_values} = { $args->{foreign_values}->get_columns };
     }
     elsif (! defined $args->{foreign_values} or ref $args->{foreign_values} eq 'HASH') {
-      # TEMP
-      my $rel_rsrc = $self->related_source($args->{rel_name});
+      my $ri = { map { $_ => 1 } $rel_rsrc->relationships };
       my $ci = $rel_rsrc->columns_info;
-      ! exists $ci->{$_} and $self->throw_exception(
+      ! exists $ci->{$_} and ! exists $ri->{$_} and $self->throw_exception(
         "Key '$_' supplied as 'foreign_values' is not a column on related source '@{[ $rel_rsrc->source_name ]}'"
       ) for keys %{ $args->{foreign_values} ||= {} };
     }
     else {
-      $self->throw_exception( "Argument 'foreign_values' must be either an object inheriting from '$rel_info->{class}' or a hash reference or undef" );
+      $self->throw_exception(
+        "Argument 'foreign_values' must be either an object inheriting from '@{[ $rel_rsrc->result_class ]}', "
+      . "or a hash reference, or undef"
+      );
     }
   }
 
@@ -1944,8 +1956,6 @@ sub _resolve_relationship_condition {
 
       my ($joinfree_alias, $joinfree_source);
       if (defined $args->{self_result_object}) {
-        # TEMP
-        my $rel_rsrc = $self->related_source($args->{rel_name});
         $joinfree_alias = $args->{foreign_alias};
         $joinfree_source = $rel_rsrc;
       }
@@ -1964,11 +1974,26 @@ sub _resolve_relationship_condition {
         $joinfree_source->columns
       };
 
-      $fq_col_list->{$_} or $self->throw_exception (
+      exists $fq_col_list->{$_} or $self->throw_exception (
         "The join-free condition returned for $exception_rel_id may only "
-      . 'contain keys that are fully qualified column names of the corresponding source'
+      . 'contain keys that are fully qualified column names of the corresponding source '
+      . "(it returned '$_')"
       ) for keys %$jfc;
 
+      (
+        length ref $_
+          and
+        defined blessed($_)
+          and
+        $_->isa('DBIx::Class::Row')
+          and
+        $self->throw_exception (
+          "The join-free condition returned for $exception_rel_id may not "
+        . 'contain result objects as values - perhaps instead of invoking '
+        . '->$something you meant to return ->get_column($something)'
+        )
+      ) for values %$jfc;
+
     }
   }
   elsif (ref $args->{condition} eq 'HASH') {
@@ -2115,35 +2140,52 @@ sub _resolve_relationship_condition {
     for my $lhs (keys %$col_eqs) {
 
       next if $col_eqs->{$lhs} eq UNRESOLVABLE_CONDITION;
-      my ($rhs) = @{ is_literal_value( $ret->{condition}{$lhs} ) || next };
 
       # there is no way to know who is right and who is left in a cref
-      # therefore a full blown resolution call
-      # TEMP
-      my $rel_rsrc = $self->related_source($args->{rel_name});
+      # therefore a full blown resolution call, and figure out the
+      # direction a bit further below
       $colinfos ||= $storage->_resolve_column_info([
         { -alias => $args->{self_alias}, -rsrc => $self },
         { -alias => $args->{foreign_alias}, -rsrc => $rel_rsrc },
       ]);
 
-      my ($l_col, $r_col) = map { $_ =~ / ([^\.]+) $ /x } ($lhs, $rhs);
+      next unless $colinfos->{$lhs};  # someone is engaging in witchcraft
 
-      if (
-        $colinfos->{$l_col}
-          and
-        $colinfos->{$r_col}
+      if ( my $rhs_ref = is_literal_value( $col_eqs->{$lhs} ) ) {
+
+        if (
+          $colinfos->{$rhs_ref->[0]}
+            and
+          $colinfos->{$lhs}{-source_alias} ne $colinfos->{$rhs_ref->[0]}{-source_alias}
+        ) {
+          ( $colinfos->{$lhs}{-source_alias} eq $args->{self_alias} )
+            ? ( $ret->{identity_map}{$colinfos->{$lhs}{-colname}} = $colinfos->{$rhs_ref->[0]}{-colname} )
+            : ( $ret->{identity_map}{$colinfos->{$rhs_ref->[0]}{-colname}} = $colinfos->{$lhs}{-colname} )
+          ;
+        }
+      }
+      elsif (
+        $col_eqs->{$lhs} =~ /^ ( \Q$args->{self_alias}\E \. .+ ) /x
           and
-        $colinfos->{$l_col}{-source_alias} ne $colinfos->{$r_col}{-source_alias}
+        ($colinfos->{$1}||{})->{-result_source} == $rel_rsrc
       ) {
-        ( $colinfos->{$l_col}{-source_alias} eq $args->{self_alias} )
-          ? ( $ret->{identity_map}{$l_col} = $r_col )
-          : ( $ret->{identity_map}{$r_col} = $l_col )
+        my ($lcol, $rcol) = map
+          { $colinfos->{$_}{-colname} }
+          ( $lhs, $1 )
         ;
+        carp_unique(
+          "The $exception_rel_id specifies equality of column '$lcol' and the "
+        . "*VALUE* '$rcol' (you did not use the { -ident => ... } operator)"
+        );
       }
     }
   }
 
-  $ret
+  # FIXME - temporary, to fool the idiotic check in SQLMaker::_join_condition
+  $ret->{condition} = { -and => [ $ret->{condition} ] }
+    unless $ret->{condition} eq UNRESOLVABLE_CONDITION;
+
+  $ret;
 }
 
 =head2 related_source