=over 4
-=item new
-
- my $obj = My::Class->new($attrs);
-
-Creates a new object from column => value mappings passed as a hash ref
-
-=cut
-
-sub new {
- my ($class, $attrs) = @_;
- $class = ref $class if ref $class;
- my $new = bless({ _column_data => { } }, $class);
- if ($attrs) {
- $new->throw("attrs must be a hashref" ) unless ref($attrs) eq 'HASH';
- while (my ($k, $v) = each %{$attrs}) {
- $new->store_column($k => $v);
- }
- }
- return $new;
-}
-
-=item insert
-
- $obj->insert;
-
-Inserts an object into the database if it isn't already in there. Returns
-the object itself.
-
-=cut
-
-sub insert {
- my ($self) = @_;
- return $self if $self->in_database;
- #use Data::Dumper; warn Dumper($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->in_database(1);
- $self->{_dirty_columns} = {};
- return $self;
-}
-
-=item in_database
-
- $obj->in_database; # Get value
- $obj->in_database(1); # Set value
-
-Indicated whether the object exists as a row in the database or not
-
-=cut
-
-sub in_database {
- my ($self, $val) = @_;
- $self->{_in_database} = $val if @_ > 1;
- return $self->{_in_database};
-}
-
-=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
-
- $obj->update;
-
-Must be run on an object that is already in the database; issues an SQL
-UPDATE query to commit any changes to the object to the db if required.
-
-=cut
-
-sub update {
- my ($self, $upd) = @_;
- $self->throw( "Not in database" ) unless $self->in_database;
- my %to_update = %{$upd || {}};
- $to_update{$_} = $self->get_column($_) for $self->is_changed;
- return -1 unless keys %to_update;
- my $rows = $self->storage->update($self->_table_name, \%to_update,
- $self->ident_condition);
- if ($rows == 0) {
- $self->throw( "Can't update ${self}: row not found" );
- } elsif ($rows > 1) {
- $self->throw("Can't update ${self}: updated more than one row");
- }
- $self->{_dirty_columns} = {};
- return $self;
-}
-
-sub ident_condition {
- my ($self) = @_;
- my %cond;
- $cond{$_} = $self->get_column($_) for keys %{$self->_primaries};
- return \%cond;
-}
-
-=item delete
-
- $obj->delete
-
-Deletes the object from the database. The object is still perfectly usable
-accessor-wise etc. but ->in_database will now return 0 and the object must
-be re ->insert'ed before it can be ->update'ed
-
-=cut
-
-sub delete {
- my $self = shift;
- if (ref $self) {
- $self->throw( "Not in database" ) unless $self->in_database;
- #warn $self->_ident_cond.' '.join(', ', $self->_ident_values);
- $self->storage->delete($self->_table_name, $self->ident_condition);
- $self->in_database(undef);
- #$self->store_column($_ => undef) for $self->primary_columns;
- # Should probably also arrange to trash PK if auto
- # but if we do, post-delete cascade triggers fail :/
- } else {
- my $attrs = { };
- if (@_ > 1 && ref $_[$#_] eq 'HASH') {
- $attrs = { %{ pop(@_) } };
- }
- my $query = (ref $_[0] eq 'HASH' ? $_[0] : {@_});
- $self->storage->delete($self->_table_name, $query);
- }
- return $self;
-}
-
-=item get_column
-
- my $val = $obj->get_column($col);
-
-Fetches a column value
-
-=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};
- return undef;
-}
-
-=item 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
-
-=cut
-
-sub set_column {
- my $self = shift;
- my ($column) = @_;
- my $old = $self->get_column($column);
- my $ret = $self->store_column(@_);
- $self->{_dirty_columns}{$column} = 1 unless defined $old && $old eq $ret;
- return $ret;
-}
-
-=item store_column
-
- $obj->store_column($col => $val);
-
-Sets a column value without marking it as dirty
-
-=cut
-
-sub store_column {
- my ($self, $column, $value) = @_;
- $self->throw( "No such column '${column}'" )
- unless $self->_columns->{$column};
- $self->throw( "set_column called for ${column} without value" )
- if @_ < 3;
- return $self->{_column_data}{$column} = $value;
-}
-
sub _register_columns {
my ($class, @cols) = @_;
my $names = { %{$class->_columns} };
=cut
sub count_literal {
- my ($class, $cond, @vals) = @_;
- $cond =~ s/^\s*WHERE//i;
- my $attrs = (ref $vals[$#vals] eq 'HASH' ? pop(@vals) : {});
- $attrs->{bind} = [ @vals ];
- return $class->count($cond, $attrs);
+ my $class = shift;
+ return $class->search_literal(@_)->count;
}
=item count
sub count {
my $class = shift;
- my $attrs = { };
- if (@_ > 1 && ref $_[$#_] eq 'HASH') {
- $attrs = { %{ pop(@_) } };
- }
- my $query = ref $_[0] eq "HASH" || (@_ == 1) ? shift: {@_};
- my @cols = 'COUNT(*)';
- my $cursor = $class->storage->select($class->_table_name, \@cols,
- $query, $attrs);
- return ($cursor->next)[0];
-}
-
-sub cursor_to_resultset {
- my ($class, $sth, $args, $cols, $attrs) = @_;
- my $rs_class = $class->_resultset_class;
- eval "use $rs_class;";
- my $rs = $rs_class->new($class, $sth, $args, $cols, $attrs);
- return (wantarray ? $rs->all : $rs);
-}
-
-sub _row_to_object { # WARNING: Destructive to @$row
- my ($class, $cols, $row) = @_;
- my $new = $class->new;
- $new->store_column($_, shift @$row) for @$cols;
- $new->in_database(1);
- return $new;
+ return $class->search(@_)->count;
}
=item search
if (@_ > 1 && ref $_[$#_] eq 'HASH') {
$attrs = { %{ pop(@_) } };
}
- my $query = (@_ == 1 || ref $_[0] eq "HASH" ? shift: {@_});
- my @cols = $class->_select_columns;
- return $class->cursor_to_resultset(undef, $attrs->{bind}, \@cols,
- { where => $query, %$attrs });
+ $attrs->{where} = (@_ == 1 || ref $_[0] eq "HASH" ? shift: {@_});
+
+ my $rs = $class->resultset($attrs);
+
+ return (wantarray ? $rs->all : $rs);
+}
+
+sub resultset {
+ my $class = shift;
+
+ my $rs_class = $class->_resultset_class;
+ eval "use $rs_class;";
+ my $rs = $rs_class->new($class, @_);
}
=item search_like
return keys %{$_[0]->_columns};
}
-=item copy
-
- my $copy = $orig->copy({ change => $to, ... });
-
-=cut
-
-sub copy {
- my ($self, $changes) = @_;
- my $new = bless({ _column_data => { %{$self->{_column_data}}} }, ref $self);
- $new->set_column($_ => $changes->{$_}) for keys %$changes;
- return $new->insert;
-}
-
-#sub _cond_resolve {
-# my ($self, $query, $attrs) = @_;
-# return '1 = 1' unless keys %$query;
-# my $op = $attrs->{'cmp'} || '=';
-# my $cond = join(' AND ',
-# map { (defined $query->{$_}
-# ? "$_ $op ?"
-# : (do { delete $query->{$_}; "$_ IS NULL"; }));
-# } keys %$query);
-# return ($cond, values %$query);
-#}
-
=item table
__PACKAGE__->table('tbl_name');
return defined($exists) ? $exists : $class->create($hash);
}
-=item insert_or_update
-
- $obj->insert_or_update
-
-Updates the object if it's already in the db, else inserts it
-
-=cut
-
-sub insert_or_update {
- my $self = shift;
- return ($self->in_database ? $self->update : $self->insert);
-}
-
-=item is_changed
-
- my @changed_col_names = $obj->is_changed
-
-=cut
-
-sub is_changed {
- return keys %{shift->{_dirty_columns} || {}};
-}
-
sub columns { return keys %{shift->_columns}; }
1;
=head1 AUTHORS
-Matt S. Trout <perl-stuff@trout.me.uk>
+Matt S. Trout <mst@shadowcatsystems.co.uk>
=head1 LICENSE
projects / dbsrgits/DBIx-Class.git / blobdiff