use strict;
use warnings;
-use base qw/Class::Data::Inheritable Class::Accessor DBIx::Class::SQL/;
+use DBIx::Class::Cursor;
-__PACKAGE__->mk_classdata('_columns' => {});
+use base qw/Class::Data::Inheritable/;
-__PACKAGE__->mk_classdata('_primaries' => {});
+__PACKAGE__->mk_classdata('_columns' => {});
__PACKAGE__->mk_classdata('_table_name');
+__PACKAGE__->mk_classdata('table_alias'); # FIXME: Doesn't actually do anything yet!
+
+__PACKAGE__->mk_classdata('_cursor_class' => 'DBIx::Class::Cursor');
+
+sub iterator_class { shift->_cursor_class(@_) }
+
+=head1 NAME
+
+DBIx::Class::Table - Basic table methods
+
+=head1 SYNOPSIS
+
+=head1 DESCRIPTION
+
+This class is responsible for defining and doing basic operations on
+L<DBIx::Class> objects.
+
+=head1 METHODS
+
+=over 4
+
+=cut
+
sub new {
my ($class, $attrs) = @_;
$class = ref $class if ref $class;
my $new = bless({ _column_data => { } }, $class);
if ($attrs) {
- die "Attrs must be a hashref" unless ref($attrs) eq 'HASH';
+ $new->throw("attrs must be a hashref" ) unless ref($attrs) eq 'HASH';
while (my ($k, $v) = each %{$attrs}) {
- $new->set_column($k => $v);
+ $new->store_column($k => $v);
}
}
+ return $new;
}
sub insert {
my ($self) = @_;
- return if $self->{_in_database};
+ return if $self->in_database;
+ #use Data::Dumper; warn Dumper($self);
my $sth = $self->_get_sth('insert', [ keys %{$self->{_column_data}} ],
$self->_table_name, undef);
$sth->execute(values %{$self->{_column_data}});
- $self->{_in_database} = 1;
+ $self->in_database(1);
+ $self->{_dirty_columns} = {};
return $self;
}
+sub in_database {
+ my ($self, $val) = @_;
+ $self->{_in_database} = $val if @_ > 1;
+ return $self->{_in_database};
+}
+
sub create {
my ($class, $attrs) = @_;
+ $class->throw( "create needs a hashref" ) unless ref $attrs eq 'HASH';
return $class->new($attrs)->insert;
}
sub update {
my ($self) = @_;
- die "Not in database" unless $self->{_in_database};
+ $self->throw( "Not in database" ) unless $self->in_database;
my @to_update = keys %{$self->{_dirty_columns} || {}};
+ return -1 unless @to_update;
my $sth = $self->_get_sth('update', \@to_update,
$self->_table_name, $self->_ident_cond);
- $sth->execute( (map { $self->{_column_data}{$_} } @to_update),
+ my $rows = $sth->execute( (map { $self->{_column_data}{$_} } @to_update),
$self->_ident_values );
+ if ($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 $self;
}
sub delete {
- my ($self) = @_;
- my $sth = $self->_get_sth('delete', undef,
- $self->_table_name, $self->_ident_cond);
- $sth->execute($self->_ident_values);
- delete $self->{_in_database};
+ my $self = shift;
+ if (ref $self) {
+ $self->throw( "Not in database" ) unless $self->in_database;
+ #warn $self->_ident_cond.' '.join(', ', $self->_ident_values);
+ my $sth = $self->_get_sth('delete', undef,
+ $self->_table_name, $self->_ident_cond);
+ $sth->execute($self->_ident_values);
+ $self->in_database(undef);
+ } else {
+ my $attrs = { };
+ if (@_ > 1 && ref $_[$#_] eq 'HASH') {
+ $attrs = { %{ pop(@_) } };
+ }
+ my $query = (ref $_[0] eq 'HASH' ? $_[0] : {@_});
+ my ($cond, @param) = $self->_cond_resolve($query, $attrs);
+ my $sth = $self->_get_sth('delete', undef, $self->_table_name, $cond);
+ $sth->execute(@param);
+ }
return $self;
}
-sub get {
+sub get_column {
my ($self, $column) = @_;
- die "No such column '${column}'" unless $self->_columns->{$column};
- return $self->{_column_data}{$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;
}
-sub set {
- my ($self, $column, $value) = @_;
- die "No such column '${column}'" unless $self->_columns->{$column};
- die "set_column called for ${column} without value" if @_ < 3;
- $self->{_dirty_columns}{$column} = 1;
- return $self->{_column_data}{$column} = $value;
+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 $ret;
}
-sub _ident_cond {
- my ($class) = @_;
- return join(" AND ", map { "$_ = ?" } keys %{$class->_primaries});
-}
-
-sub _ident_values {
- my ($self) = @_;
- return (map { $self->{_column_data}{$_} } keys %{$self->_primaries});
+sub store_column {
+ my ($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} = $value;
}
sub _register_columns {
sub _mk_column_accessors {
my ($class, @cols) = @_;
- $class->mk_accessors(@cols);
+ $class->mk_group_accessors('column' => @cols);
+}
+
+sub add_columns {
+ my ($class, @cols) = @_;
+ $class->_register_columns(@cols);
+ $class->_mk_column_accessors(@cols);
+}
+
+sub retrieve_from_sql {
+ my ($class, $cond, @vals) = @_;
+ $cond =~ s/^\s*WHERE//i;
+ my $attrs = (ref $vals[$#vals] eq 'HASH' ? pop(@vals) : {});
+ my @cols = $class->_select_columns($attrs);
+ my $sth = $class->_get_sth( 'select', \@cols, $class->_table_name, $cond);
+ #warn "$cond @vals";
+ return $class->sth_to_objects($sth, \@vals, \@cols, { where => $cond });
+}
+
+sub count_from_sql {
+ my ($class, $cond, @vals) = @_;
+ $cond =~ s/^\s*WHERE//i;
+ my $attrs = (ref $vals[$#vals] eq 'HASH' ? pop(@vals) : {});
+ my @cols = 'COUNT(*)';
+ my $sth = $class->_get_sth( 'select', \@cols, $class->_table_name, $cond);
+ #warn "$cond @vals";
+ $sth->execute(@vals);
+ my ($count) = $sth->fetchrow_array;
+ return $count;
+}
+
+sub count {
+ my $class = shift;
+ my $attrs = { };
+ if (@_ > 1 && ref $_[$#_] eq 'HASH') {
+ $attrs = { %{ pop(@_) } };
+ }
+ my $query = ref $_[0] eq "HASH" ? shift: {@_};
+ my ($cond, @param) = $class->_cond_resolve($query, $attrs);
+ return $class->count_from_sql($cond, @param, $attrs);
+}
+
+sub sth_to_objects {
+ my ($class, $sth, $args, $cols, $attrs) = @_;
+ my @cols = ((ref $cols eq 'ARRAY') ? @$cols : @{$sth->{NAME_lc}} );
+ my @args = map { ref $_ ? ''.$_ : $_ } @$args; # Stringify objects
+ my $cursor_class = $class->_cursor_class;
+ eval "use $cursor_class;";
+ my $cursor = $cursor_class->new($class, $sth, \@args, \@cols, $attrs);
+ return (wantarray ? $cursor->all : $cursor);
+}
+
+sub _row_to_object { # WARNING: Destructive to @$row
+ my ($class, $cols, $row) = @_;
+ my $new = $class->new;
+ $new->store_column($_, shift @$row) for @$cols;
+ $new->in_database(1);
+ return $new;
+}
+
+sub search {
+ my $class = shift;
+ my $attrs = { };
+ if (@_ > 1 && ref $_[$#_] eq 'HASH') {
+ $attrs = { %{ pop(@_) } };
+ }
+ my $query = ref $_[0] eq "HASH" ? shift: {@_};
+ my ($cond, @param) = $class->_cond_resolve($query, $attrs);
+ return $class->retrieve_from_sql($cond, @param, $attrs);
+}
+
+sub search_like {
+ my $class = shift;
+ my $attrs = { };
+ if (@_ > 1 && ref $_[$#_] eq 'HASH') {
+ $attrs = pop(@_);
+ }
+ return $class->search(@_, { %$attrs, cmp => 'LIKE' });
+}
+
+sub _select_columns {
+ return keys %{$_[0]->_columns};
+}
+
+sub copy {
+ my ($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);
+}
+
+sub table {
+ shift->_table_name(@_);
+}
+
+sub find_or_create {
+ my $class = shift;
+ my $hash = ref $_[0] eq "HASH" ? shift: {@_};
+ my ($exists) = $class->search($hash);
+ return defined($exists) ? $exists : $class->create($hash);
+}
+
+sub insert_or_update {
+ my $self = shift;
+ return ($self->in_database ? $self->update : $self->insert);
+}
+
+sub retrieve_all {
+ my ($class) = @_;
+ return $class->retrieve_from_sql( '1' );
+}
+
+sub is_changed {
+ return keys %{shift->{_dirty_columns} || {}};
}
1;
+
+=back
+
+=head1 AUTHORS
+
+Matt S. Trout <perl-stuff@trout.me.uk>
+
+=head1 LICENSE
+
+You may distribute this code under the same terms as Perl itself.
+
+=cut
+
projects / dbsrgits/DBIx-Class.git / blobdiff