Commit | Line | Data |
89c0a5a2 |
1 | package DBIx::Class::ResultSet; |
2 | |
3 | use strict; |
4 | use warnings; |
5 | use overload |
6 | '0+' => 'count', |
7 | fallback => 1; |
8 | |
9 | sub new { |
7624b19f |
10 | my ($it_class, $db_class, $attrs) = @_; |
89c0a5a2 |
11 | #use Data::Dumper; warn Dumper(@_); |
12 | $it_class = ref $it_class if ref $it_class; |
13 | $attrs = { %{ $attrs || {} } }; |
7624b19f |
14 | my $cols = [ $db_class->_select_columns ]; |
89c0a5a2 |
15 | my $new = { |
16 | class => $db_class, |
89c0a5a2 |
17 | cols => $cols, |
89c0a5a2 |
18 | cond => $attrs->{where}, |
19 | attrs => $attrs }; |
20 | return bless ($new, $it_class); |
21 | } |
22 | |
73f58123 |
23 | sub cursor { |
24 | my ($self) = @_; |
25 | my ($db_class, $attrs) = @{$self}{qw/class attrs/}; |
26 | return $self->{cursor} |
27 | ||= $db_class->storage->select($db_class->_table_name, $self->{cols}, |
28 | $attrs->{where},$attrs); |
29 | } |
30 | |
89c0a5a2 |
31 | sub slice { |
32 | my ($self, $min, $max) = @_; |
33 | my $attrs = { %{ $self->{attrs} || {} } }; |
34 | $self->{class}->throw("Can't slice without where") unless $attrs->{where}; |
35 | $attrs->{offset} = $min; |
36 | $attrs->{rows} = ($max ? ($max - $min + 1) : 1); |
7624b19f |
37 | my $slice = $self->new($self->{class}, $attrs); |
89c0a5a2 |
38 | return (wantarray ? $slice->all : $slice); |
39 | } |
40 | |
41 | sub next { |
42 | my ($self) = @_; |
73f58123 |
43 | my @row = $self->cursor->next; |
89c0a5a2 |
44 | return unless (@row); |
45 | return $self->{class}->_row_to_object($self->{cols}, \@row); |
46 | } |
47 | |
48 | sub count { |
49 | my ($self) = @_; |
7624b19f |
50 | my $db_class = $self->{class}; |
59f8e584 |
51 | |
52 | # offset breaks COUNT(*), so remove it |
53 | my $attrs = { %{ $self->{attrs} } }; |
54 | delete $attrs->{offset}; |
55 | |
7624b19f |
56 | my @cols = 'COUNT(*)'; |
1a14aa3f |
57 | my ($c) = $db_class->storage->select_single($db_class->_table_name, \@cols, |
59f8e584 |
58 | $self->{cond}, $attrs); |
59 | return 0 unless $c; |
60 | return ( $attrs->{rows} && $attrs->{rows} < $c ) |
61 | ? $attrs->{rows} |
62 | : $c; |
89c0a5a2 |
63 | } |
64 | |
65 | sub all { |
66 | my ($self) = @_; |
1a14aa3f |
67 | return map { $self->{class}->_row_to_object($self->{cols}, $_); } |
73f58123 |
68 | $self->cursor->all; |
89c0a5a2 |
69 | } |
70 | |
71 | sub reset { |
72 | my ($self) = @_; |
73f58123 |
73 | $self->cursor->reset; |
89c0a5a2 |
74 | return $self; |
75 | } |
76 | |
77 | sub first { |
78 | return $_[0]->reset->next; |
79 | } |
80 | |
28927b50 |
81 | sub delete { |
89c0a5a2 |
82 | my ($self) = @_; |
83 | $_->delete for $self->all; |
84 | return 1; |
85 | } |
86 | |
28927b50 |
87 | *delete_all = \&delete; # Yeah, yeah, yeah ... |
88 | |
89c0a5a2 |
89 | 1; |