attrs => $attrs };
$class->_relationships(\%rels);
#warn %{$f_class->_columns};
+
return unless eval { %{$f_class->_columns}; }; # Foreign class not loaded
my %join = (%$attrs, _action => 'join',
_aliases => { 'self' => 'me', 'foreign' => $rel },
_classes => { 'me' => $class, $rel => $f_class });
eval { $class->_cond_resolve($cond, \%join) };
- $class->throw("Error creating relationship $rel: $@") if $@;
+
+ if ($@) { # If the resolve failed, back out and re-throw the error
+ delete $rels{$rel}; #
+ $class->_relationships(\%rels);
+ $class->throw("Error creating relationship $rel: $@");
+ }
+ 1;
}
sub _cond_key {
sub search_related {
my $self = shift;
+ return $self->_literal_related('search', @_);
+}
+
+sub count_related {
+ my $self = shift;
+ return $self->_literal_related('count', @_);
+}
+
+sub _literal_related {
+ my $self = shift;
+ my $op = shift;
+ my $meth = "${op}_literal";
my $rel = shift;
my $attrs = { };
if (@_ > 1 && ref $_[$#_] eq 'HASH') {
$attrs = { %{ pop(@_) } };
}
my $rel_obj = $self->_relationships->{$rel};
- $self->throw( "No such relationship ${rel}" ) unless $rel;
+ $self->throw( "No such relationship ${rel}" ) unless $rel_obj;
$attrs = { %{$rel_obj->{attrs} || {}}, %{$attrs || {}} };
my $s_cond;
if (@_) {
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);
+ #warn $rel_obj->{class}." $meth $cond ".join(', ', @{$attrs->{bind}});
+ return $rel_obj->{class}->$meth($cond, @{$attrs->{bind} || []}, $attrs);
}
sub create_related {
+ my $class = shift;
+ return $class->new_related(@_)->insert;
+}
+
+sub new_related {
my ($self, $rel, $values, $attrs) = @_;
- $self->throw( "Can't call create_related as class method" )
+ $self->throw( "Can't call new_related as class method" )
unless ref $self;
- $self->throw( "create_related needs a hash" )
+ $self->throw( "new_related needs a hash" )
unless (ref $values eq 'HASH');
my $rel_obj = $self->_relationships->{$rel};
- $self->throw( "No such relationship ${rel}" ) unless $rel;
+ $self->throw( "No such relationship ${rel}" ) unless $rel_obj;
$self->throw( "Can't abstract implicit create for ${rel}, condition not a hash" )
unless ref $rel_obj->{cond} eq 'HASH';
$attrs = { %{$rel_obj->{attrs}}, %{$attrs || {}}, _action => 'convert' };
$self->_cond_value($attrs, $k => $v);
$fields{$self->_cond_key($attrs, $k)} = (@{delete $attrs->{bind}})[0];
}
- return $rel_obj->{class}->create(\%fields);
+ return $rel_obj->{class}->new(\%fields);
+}
+
+sub find_or_create_related {
+ my $self = shift;
+ return ($self->search_related(@_))[0] || $self->create_related(@_);
+}
+
+sub set_from_related {
+ my ($self, $rel, $f_obj) = @_;
+ my $rel_obj = $self->_relationships->{$rel};
+ $self->throw( "No such relationship ${rel}" ) unless $rel_obj;
+ my $cond = $rel_obj->{cond};
+ $self->throw( "set_from_related can only handle a hash condition; the "
+ ."condition for $rel is of type ".(ref $cond ? ref $cond : 'plain scalar'))
+ unless ref $cond eq 'HASH';
+ $self->throw( "Object $f_obj isn't a ".$rel_obj->{class} )
+ unless $f_obj->isa($rel_obj->{class});
+ foreach my $key (keys %$cond) {
+ next if ref $cond->{$key}; # Skip literals and complex conditions
+ $self->throw("set_from_related can't handle $key as key")
+ unless $key =~ m/^foreign\.([^\.]+)$/;
+ my $val = $f_obj->get_column($1);
+ $self->throw("set_from_related can't handle ".$cond->{$key}." as value")
+ unless $cond->{$key} =~ m/^self\.([^\.]+)$/;
+ $self->set_column($1 => $val);
+ }
+ return 1;
+}
+
+sub update_from_related {
+ my $self = shift;
+ $self->set_from_related(@_);
+ $self->update;
}
1;