use strict;
use warnings;
+use base qw/DBIx::Class/;
+
=head1 NAME
DBIx::Class::Row - Basic row methods
=head1 METHODS
-=over 4
-
-=item new
+=head2 new
my $obj = My::Class->new($attrs);
if ($attrs) {
$new->throw("attrs must be a hashref" ) unless ref($attrs) eq 'HASH';
while (my ($k, $v) = each %{$attrs}) {
+ die "No such column $k on $class" unless $class->has_column($k);
$new->store_column($k => $v);
}
}
return $new;
}
-=item insert
+=head2 insert
$obj->insert;
my ($self) = @_;
return $self if $self->in_storage;
#use Data::Dumper; warn Dumper($self);
- my %in;
- $in{$_} = $self->get_column($_)
- for grep { defined $self->get_column($_) } $self->columns;
- my %out = %{ $self->storage->insert($self->_table_name, \%in) };
- $self->store_column($_, $out{$_})
- for grep { $self->get_column($_) ne $out{$_} } keys %out;
+ $self->storage->insert($self->_table_name, { $self->get_columns });
$self->in_storage(1);
$self->{_dirty_columns} = {};
return $self;
}
-=item in_storage
+=head2 in_storage
$obj->in_storage; # Get value
$obj->in_storage(1); # Set value
return $self->{_in_storage};
}
-=item create
-
- my $new = My::Class->create($attrs);
-
-A shortcut for My::Class->new($attrs)->insert;
-
-=cut
-
-sub create {
- my ($class, $attrs) = @_;
- $class->throw( "create needs a hashref" ) unless ref $attrs eq 'HASH';
- return $class->new($attrs)->insert;
-}
-
-=item update
+=head2 update
$obj->update;
sub update {
my ($self, $upd) = @_;
$self->throw( "Not in database" ) unless $self->in_storage;
- my %to_update = %{$upd || {}};
- $to_update{$_} = $self->get_column($_) for $self->is_changed;
+ my %to_update = $self->get_dirty_columns;
return -1 unless keys %to_update;
- my $rows = $self->storage->update($self->_table_name, \%to_update,
+ my $rows = $self->storage->update($self->result_source->from, \%to_update,
$self->ident_condition);
if ($rows == 0) {
$self->throw( "Can't update ${self}: row not found" );
return $self;
}
-sub ident_condition {
- my ($self) = @_;
- my %cond;
- $cond{$_} = $self->get_column($_) for keys %{$self->_primaries};
- return \%cond;
-}
-
-=item delete
+=head2 delete
$obj->delete
if (ref $self) {
$self->throw( "Not in database" ) unless $self->in_storage;
#warn $self->_ident_cond.' '.join(', ', $self->_ident_values);
- $self->storage->delete($self->_table_name, $self->ident_condition);
+ $self->storage->delete($self->result_source->from, $self->ident_condition);
$self->in_storage(undef);
#$self->store_column($_ => undef) for $self->primary_columns;
# Should probably also arrange to trash PK if auto
return $self;
}
-=item get_column
+=head2 get_column
my $val = $obj->get_column($col);
-Fetches a column value
+Gets a column value from a row object. Currently, does not do
+any queries; the column must have already been fetched from
+the database and stored in the object.
=cut
sub get_column {
my ($self, $column) = @_;
$self->throw( "Can't fetch data as class method" ) unless ref $self;
- $self->throw( "No such column '${column}'" ) unless $self->_columns->{$column};
return $self->{_column_data}{$column}
if exists $self->{_column_data}{$column};
+ $self->throw( "No such column '${column}'" ) unless $self->has_column($column);
return undef;
}
-=item set_column
+=head2 get_columns
+
+ my %data = $obj->get_columns;
+
+Does C<get_column>, for all column values at once.
+
+=cut
+
+sub get_columns {
+ my $self = shift;
+ return return %{$self->{_column_data}};
+}
+
+=head2 get_dirty_columns
+
+ my %data = $obj->get_dirty_columns;
+
+Identical to get_columns but only returns those that have been changed.
+
+=cut
+
+sub get_dirty_columns {
+ my $self = shift;
+ return map { $_ => $self->{_column_data}{$_} }
+ keys %{$self->{_dirty_columns}};
+}
+
+=head2 set_column
$obj->set_column($col => $val);
-Sets a column value; if the new value is different to the old the column
-is marked as dirty for when you next call $obj->update
+Sets a column value. If the new value is different from the old one,
+the column is marked as dirty for when you next call $obj->update.
=cut
return $ret;
}
-=item store_column
+=head2 set_columns
+
+ my $copy = $orig->set_columns({ $col => $val, ... });
+
+Sets more than one column value at once.
+
+=cut
+
+sub set_columns {
+ my ($self,$data) = @_;
+ while (my ($col,$val) = each %$data) {
+ $self->set_column($col,$val);
+ }
+}
+
+=head2 copy
+
+ my $copy = $orig->copy({ change => $to, ... });
+
+Inserts a new row with the specified changes.
+
+=cut
+
+=head2 store_column
$obj->store_column($col => $val);
-Sets a column value without marking it as dirty
+Sets a column value without marking it as dirty.
=cut
sub store_column {
my ($self, $column, $value) = @_;
$self->throw( "No such column '${column}'" )
- unless $self->_columns->{$column};
+ unless exists $self->{_column_data}{$column} || $self->has_column($column);
$self->throw( "set_column called for ${column} without value" )
if @_ < 3;
return $self->{_column_data}{$column} = $value;
}
-sub _row_to_object {
- my ($class, $cols, $row) = @_;
- my %vals;
- $vals{$cols->[$_]} = $row->[$_] for 0 .. $#$cols;
- my $new = $class->new(\%vals);
- $new->in_storage(1);
- return $new;
-}
+=head2 inflate_result
-=item copy
+ Class->inflate_result(\%me, \%prefetch?)
- my $copy = $orig->copy({ change => $to, ... });
+Called by ResultSet to inflate a result from storage
=cut
+sub inflate_result {
+ my ($class, $me, $prefetch) = @_;
+ #use Data::Dumper; print Dumper(@_);
+ my $new = bless({ _column_data => $me }, ref $class || $class);
+ $new->in_storage(1);
+ PRE: foreach my $pre (keys %{$prefetch||{}}) {
+ my $rel_obj = $class->_relationships->{$pre};
+ my $pre_class = $class->resolve_class($rel_obj->{class});
+ my $fetched = $pre_class->inflate_result(@{$prefetch->{$pre}});
+ $class->throw("No accessor for prefetched $pre")
+ unless defined $rel_obj->{attrs}{accessor};
+ if ($rel_obj->{attrs}{accessor} eq 'single') {
+ PRIMARY: foreach my $pri ($rel_obj->{class}->primary_columns) {
+ unless (defined $fetched->get_column($pri)) {
+ undef $fetched;
+ last PRIMARY;
+ }
+ }
+ $new->{_relationship_data}{$pre} = $fetched;
+ } elsif ($rel_obj->{attrs}{accessor} eq 'filter') {
+ $new->{_inflated_column}{$pre} = $fetched;
+ } else {
+ $class->throw("Don't know how to store prefetched $pre");
+ }
+ }
+ return $new;
+}
+
sub copy {
my ($self, $changes) = @_;
my $new = bless({ _column_data => { %{$self->{_column_data}}} }, ref $self);
return $new->insert;
}
-=item insert_or_update
+=head2 insert_or_update
$obj->insert_or_update
-Updates the object if it's already in the db, else inserts it
+Updates the object if it's already in the db, else inserts it.
=cut
return ($self->in_storage ? $self->update : $self->insert);
}
-=item is_changed
+=head2 is_changed
my @changed_col_names = $obj->is_changed
1;
-=back
-
=head1 AUTHORS
Matt S. Trout <mst@shadowcatsystems.co.uk>
projects / dbsrgits/DBIx-Class.git / blobdiff