1 package DBIx::Class::Table;
6 use base qw/Class::Data::Inheritable DBIx::Class::SQL/;
8 __PACKAGE__->mk_classdata('_columns' => {});
10 __PACKAGE__->mk_classdata('_table_name');
12 __PACKAGE__->mk_classdata('table_alias'); # FIXME: Doesn't actually do anything yet!
16 DBIx::Class::Table - Basic table methods
22 This class is responsible for defining and doing basic operations on
23 L<DBIx::Class> objects.
32 my ($class, $attrs) = @_;
33 $class = ref $class if ref $class;
34 my $new = bless({ _column_data => { } }, $class);
36 die "attrs must be a hashref" unless ref($attrs) eq 'HASH';
37 while (my ($k, $v) = each %{$attrs}) {
38 $new->store_column($k => $v);
46 return if $self->in_database;
47 #use Data::Dumper; warn Dumper($self);
48 my $sth = $self->_get_sth('insert', [ keys %{$self->{_column_data}} ],
49 $self->_table_name, undef);
50 $sth->execute(values %{$self->{_column_data}});
52 $self->in_database(1);
53 $self->{_dirty_columns} = {};
58 my ($self, $val) = @_;
59 $self->{_in_database} = $val if @_ > 1;
60 return $self->{_in_database};
64 my ($class, $attrs) = @_;
65 die "create needs a hashref" unless ref $attrs eq 'HASH';
66 return $class->new($attrs)->insert;
71 die "Not in database" unless $self->in_database;
72 my @to_update = keys %{$self->{_dirty_columns} || {}};
73 return -1 unless @to_update;
74 my $sth = $self->_get_sth('update', \@to_update,
75 $self->_table_name, $self->_ident_cond);
76 my $rows = $sth->execute( (map { $self->{_column_data}{$_} } @to_update),
77 $self->_ident_values );
80 die "Can't update $self: row not found";
82 die "Can't update $self: updated more than one row";
84 $self->{_dirty_columns} = {};
91 die "Not in database" unless $self->in_database;
92 #warn $self->_ident_cond.' '.join(', ', $self->_ident_values);
93 my $sth = $self->_get_sth('delete', undef,
94 $self->_table_name, $self->_ident_cond);
95 $sth->execute($self->_ident_values);
97 $self->in_database(undef);
100 if (@_ > 1 && ref $_[$#_] eq 'HASH') {
101 $attrs = { %{ pop(@_) } };
103 my $query = (ref $_[0] eq 'HASH' ? $_[0] : {@_});
104 my ($cond, @param) = $self->_cond_resolve($query, $attrs);
105 my $sth = $self->_get_sth('delete', undef, $self->_table_name, $cond);
106 $sth->execute(@param);
113 my ($self, $column) = @_;
114 die "Can't fetch data as class method" unless ref $self;
115 die "No such column '${column}'" unless $self->_columns->{$column};
116 return $self->{_column_data}{$column}
117 if exists $self->{_column_data}{$column};
124 my $ret = $self->store_column(@_);
125 $self->{_dirty_columns}{$column} = 1;
130 my ($self, $column, $value) = @_;
131 die "No such column '${column}'" unless $self->_columns->{$column};
132 die "set_column called for ${column} without value" if @_ < 3;
133 return $self->{_column_data}{$column} = $value;
136 sub _register_columns {
137 my ($class, @cols) = @_;
138 my $names = { %{$class->_columns} };
139 $names->{$_} ||= {} for @cols;
140 $class->_columns($names);
143 sub _mk_column_accessors {
144 my ($class, @cols) = @_;
145 $class->mk_group_accessors('column' => @cols);
149 my ($class, @cols) = @_;
150 $class->_register_columns(@cols);
151 $class->_mk_column_accessors(@cols);
154 sub retrieve_from_sql {
155 my ($class, $cond, @vals) = @_;
156 $cond =~ s/^\s*WHERE//i;
157 my $attrs = (ref $vals[$#vals] eq 'HASH' ? pop(@vals) : {});
158 my @cols = $class->_select_columns($attrs);
159 my $sth = $class->_get_sth( 'select', \@cols, $class->_table_name, $cond);
161 return $class->sth_to_objects($sth, \@vals, \@cols);
165 my ($class, $sth, $args, $cols) = @_;
166 my @cols = ((ref $cols eq 'ARRAY') ? @$cols : @{$sth->{NAME_lc}} );
167 $sth->execute(@$args);
169 while (my @row = $sth->fetchrow_array) {
170 push(@found, $class->_row_to_object(\@cols, \@row));
176 sub _row_to_object { # WARNING: Destructive to @$row
177 my ($class, $cols, $row) = @_;
178 my $new = $class->new;
179 $new->store_column($_, shift @$row) for @$cols;
180 $new->in_database(1);
187 if (@_ > 1 && ref $_[$#_] eq 'HASH') {
188 $attrs = { %{ pop(@_) } };
190 my $query = ref $_[0] eq "HASH" ? shift: {@_};
191 my ($cond, @param) = $class->_cond_resolve($query, $attrs);
192 return $class->retrieve_from_sql($cond, @param, $attrs);
198 if (@_ > 1 && ref $_[$#_] eq 'HASH') {
201 return $class->search(@_, { %$attrs, cmp => 'LIKE' });
204 sub _select_columns {
205 return keys %{$_[0]->_columns};
209 my ($self, $changes) = @_;
210 my $new = bless({ _column_data => { %{$self->{_column_data}}} }, ref $self);
211 $new->set_column($_ => $changes->{$_}) for keys %$changes;
216 my ($self, $query, $attrs) = @_;
217 return '1 = 1' unless keys %$query;
218 my $op = $attrs->{'cmp'} || '=';
219 my $cond = join(' AND ',
220 map { (defined $query->{$_}
222 : (do { delete $query->{$_}; "$_ IS NULL"; }));
224 return ($cond, values %$query);
228 shift->_table_name(@_);
237 Matt S. Trout <perl-stuff@trout.me.uk>
241 You may distribute this code under the same terms as Perl itself.