added objectindex tests for search and add
[dbsrgits/DBIx-Class-Historic.git] / lib / DBIx / Class / Relationship.pm
CommitLineData
b8e1e21f 1package DBIx::Class::Relationship;
2
3use strict;
4use warnings;
5
6use base qw/Class::Data::Inheritable/;
7
8__PACKAGE__->mk_classdata('_relationships', { } );
9
10sub add_relationship {
11 my ($class, $rel, $f_class, $cond, $attrs) = @_;
12 my %rels = %{ $class->_relationships };
13 $rels{$rel} = { class => $f_class,
14 cond => $cond,
15 attrs => $attrs };
16 $class->_relationships(\%rels);
17}
18
19sub _cond_key {
20 my ($self, $attrs, $key) = @_;
21 my $action = $attrs->{_action} || '';
22 if ($action eq 'convert') {
23 unless ($key =~ s/^foreign\.//) {
24 die "Unable to convert relationship to WHERE clause: invalid key ${key}";
25 }
26 return $key;
27 } elsif ($action eq 'join') {
28 my ($type, $field) = split(/\./, $key);
29 if ($attrs->{_aliases}{$type}) {
30 return join('.', $attrs->{_aliases}{$type}, $field);
31 } else {
32 die "Unable to resolve type ${type}: only have aliases for ".
33 join(', ', keys %{$attrs->{_aliases}{$type} || {}});
34 }
35 }
36 return $self->NEXT::ACTUAL::_cond_key($attrs, $key);
37}
38
39sub _cond_value {
40 my ($self, $attrs, $key, $value) = @_;
41 my $action = $attrs->{_action} || '';
42 if ($action eq 'convert') {
43 unless ($value =~ s/^self\.//) {
44 die "Unable to convert relationship to WHERE clause: invalid value ${value}";
45 }
c687b87e 46 unless ($self->_columns->{$value}) {
b8e1e21f 47 die "Unable to convert relationship to WHERE clause: no such accessor ${value}";
48 }
49 push(@{$attrs->{bind}}, $self->get_column($value));
50 return '?';
51 } elsif ($action eq 'join') {
52 my ($type, $field) = split(/\./, $value);
53 if ($attrs->{_aliases}{$type}) {
54 return join('.', $attrs->{_aliases}{$type}, $field);
55 } else {
56 die "Unable to resolve type ${type}: only have aliases for ".
57 join(', ', keys %{$attrs->{_aliases}{$type} || {}});
58 }
59 }
60
61 return $self->NEXT::ACTUAL::_cond_value($attrs, $key, $value)
62}
63
64sub search_related {
65 my $self = shift;
66 my $rel = shift;
67 my $attrs = { };
68 if (@_ > 1 && ref $_[$#_] eq 'HASH') {
69 $attrs = { %{ pop(@_) } };
70 }
71 my $rel_obj = $self->_relationships->{$rel};
72 die "No such relationship ${rel}" unless $rel;
9b6e0845 73 $attrs = { %{$rel_obj->{attrs} || {}}, %{$attrs || {}} };
b8e1e21f 74 my $s_cond;
75 if (@_) {
76 die "Invalid query: @_" if (@_ > 1 && (@_ % 2 == 1));
77 my $query = ((@_ > 1) ? {@_} : shift);
78 $s_cond = $self->_cond_resolve($query, $attrs);
79 }
80 $attrs->{_action} = 'convert';
81 my ($cond) = $self->_cond_resolve($rel_obj->{cond}, $attrs);
82 $cond = "${s_cond} AND ${cond}" if $s_cond;
c687b87e 83 return $rel_obj->{class}->retrieve_from_sql($cond, @{$attrs->{bind} || []},
84 $attrs);
b8e1e21f 85}
86
87sub create_related {
88 my ($self, $rel, $values, $attrs) = @_;
89 die "Can't call create_related as class method" unless ref $self;
90 die "create_related needs a hash" unless (ref $values eq 'HASH');
91 my $rel_obj = $self->_relationships->{$rel};
92 die "No such relationship ${rel}" unless $rel;
93 die "Can't abstract implicit create for ${rel}, condition not a hash"
94 unless ref $rel_obj->{cond} eq 'HASH';
95 $attrs = { %{$rel_obj->{attrs}}, %{$attrs || {}}, _action => 'convert' };
96 my %fields = %$values;
97 while (my ($k, $v) = each %{$rel_obj->{cond}}) {
98 $self->_cond_value($attrs, $k => $v);
99 $fields{$self->_cond_key($attrs, $k)} = (@{delete $attrs->{bind}})[0];
100 }
101 return $rel_obj->{class}->create(\%fields);
102}
103
1041;