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1 | package DBIx::Class::Table; |
2 | |
3 | use strict; |
4 | use warnings; |
5 | |
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6 | use base qw/Class::Data::Inheritable DBIx::Class::SQL/; |
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7 | |
8 | __PACKAGE__->mk_classdata('_columns' => {}); |
9 | |
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10 | __PACKAGE__->mk_classdata('_table_name'); |
11 | |
12 | sub new { |
13 | my ($class, $attrs) = @_; |
14 | $class = ref $class if ref $class; |
15 | my $new = bless({ _column_data => { } }, $class); |
16 | if ($attrs) { |
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17 | die "attrs must be a hashref" unless ref($attrs) eq 'HASH'; |
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18 | while (my ($k, $v) = each %{$attrs}) { |
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19 | $new->store_column($k => $v); |
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20 | } |
21 | } |
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22 | return $new; |
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23 | } |
24 | |
25 | sub insert { |
26 | my ($self) = @_; |
27 | return if $self->{_in_database}; |
28 | my $sth = $self->_get_sth('insert', [ keys %{$self->{_column_data}} ], |
29 | $self->_table_name, undef); |
30 | $sth->execute(values %{$self->{_column_data}}); |
31 | $self->{_in_database} = 1; |
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32 | $self->{_dirty_columns} = {}; |
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33 | return $self; |
34 | } |
35 | |
36 | sub create { |
37 | my ($class, $attrs) = @_; |
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38 | die "create needs a hashref" unless ref $attrs eq 'HASH'; |
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39 | return $class->new($attrs)->insert; |
40 | } |
41 | |
42 | sub update { |
43 | my ($self) = @_; |
44 | die "Not in database" unless $self->{_in_database}; |
45 | my @to_update = keys %{$self->{_dirty_columns} || {}}; |
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46 | return -1 unless @to_update; |
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47 | my $sth = $self->_get_sth('update', \@to_update, |
48 | $self->_table_name, $self->_ident_cond); |
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49 | my $rows = $sth->execute( (map { $self->{_column_data}{$_} } @to_update), |
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50 | $self->_ident_values ); |
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51 | if ($rows == 0) { |
52 | die "Can't update $self: row not found"; |
53 | } elsif ($rows > 1) { |
54 | die "Can't update $self: updated more than one row"; |
55 | } |
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56 | $self->{_dirty_columns} = {}; |
57 | return $self; |
58 | } |
59 | |
60 | sub delete { |
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61 | my $self = shift; |
62 | if (ref $self) { |
63 | my $sth = $self->_get_sth('delete', undef, |
64 | $self->_table_name, $self->_ident_cond); |
65 | $sth->execute($self->_ident_values); |
66 | $sth->finish; |
67 | delete $self->{_in_database}; |
68 | } else { |
69 | my $query = (ref $_[0] eq 'HASH' ? $_[0] : {@_}); |
70 | my ($cond, $param) = $self->_where_from_hash($query); |
71 | my $sth = $self->_get_sth('delete', undef, $self->_table_name, $cond); |
72 | $sth->execute(@$param); |
73 | $sth->finish; |
74 | } |
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75 | return $self; |
76 | } |
77 | |
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78 | sub get_column { |
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79 | my ($self, $column) = @_; |
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80 | die "Can't fetch data as class method" unless ref $self; |
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81 | die "No such column '${column}'" unless $self->_columns->{$column}; |
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82 | return $self->{_column_data}{$column} if $self->_columns->{$column}; |
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83 | } |
84 | |
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85 | sub set_column { |
86 | my $self = shift; |
87 | my ($column) = @_; |
88 | my $ret = $self->store_column(@_); |
89 | $self->{_dirty_columns}{$column} = 1; |
90 | return $ret; |
91 | } |
92 | |
93 | sub store_column { |
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94 | my ($self, $column, $value) = @_; |
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95 | die "No such column '${column}'" unless $self->_columns->{$column}; |
96 | die "set_column called for ${column} without value" if @_ < 3; |
97 | return $self->{_column_data}{$column} = $value; |
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98 | } |
99 | |
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100 | sub _register_columns { |
101 | my ($class, @cols) = @_; |
102 | my $names = { %{$class->_columns} }; |
103 | $names->{$_} ||= {} for @cols; |
104 | $class->_columns($names); |
105 | } |
106 | |
107 | sub _mk_column_accessors { |
108 | my ($class, @cols) = @_; |
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109 | $class->mk_group_accessors('column' => @cols); |
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110 | } |
111 | |
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112 | sub add_columns { |
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113 | my ($class, @cols) = @_; |
114 | $class->_register_columns(@cols); |
115 | $class->_mk_column_accessors(@cols); |
116 | } |
117 | |
118 | sub retrieve_from_sql { |
119 | my ($class, $cond, @vals) = @_; |
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120 | $cond =~ s/^\s*WHERE//i; |
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121 | my @cols = $class->_select_columns; |
122 | my $sth = $class->_get_sth( 'select', \@cols, $class->_table_name, $cond); |
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123 | return $class->sth_to_objects($sth, \@vals, \@cols); |
124 | } |
125 | |
126 | sub sth_to_objects { |
127 | my ($class, $sth, $args, $cols) = @_; |
128 | my @cols = ((ref $cols eq 'ARRAY') ? @$cols : @{$sth->{NAME_lc}} ); |
129 | $sth->execute(@$args); |
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130 | my @found; |
131 | while (my @row = $sth->fetchrow_array) { |
132 | my $new = $class->new; |
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133 | $new->store_column($_, shift @row) for @cols; |
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134 | $new->{_in_database} = 1; |
135 | push(@found, $new); |
136 | } |
137 | return @found; |
138 | } |
139 | |
140 | sub search { |
141 | my $class = shift; |
142 | my $where = ref $_[0] eq "HASH" ? shift: {@_}; |
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143 | my ($cond, $param) = $class->_where_from_hash($where); |
144 | return $class->retrieve_from_sql($cond, @{$param}); |
145 | } |
146 | |
147 | sub search_like { |
148 | my $class = shift; |
149 | my $where = ref $_[0] eq "HASH" ? shift: {@_}; |
150 | my ($cond, $param) = $class->_where_from_hash($where, { cmp => 'like' }); |
151 | return $class->retrieve_from_sql($cond, @{$param}); |
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152 | } |
153 | |
154 | sub _select_columns { |
155 | return keys %{$_[0]->_columns}; |
156 | } |
157 | |
158 | sub copy { |
159 | my ($self, $changes) = @_; |
160 | my $new = bless({ _column_data => { %{$self->{_column_data}}} }, ref $self); |
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161 | $new->set_column($_ => $changes->{$_}) for keys %$changes; |
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162 | return $new->insert; |
163 | } |
164 | |
165 | sub _where_from_hash { |
166 | my ($self, $query, $opts) = @_; |
167 | my $op = $opts->{'cmp'} || '='; |
168 | my $cond = join(' AND ', |
169 | map { (defined $query->{$_} |
170 | ? "$_ $op ?" |
171 | : (do { delete $query->{$_}; "$_ IS NULL"; })); |
172 | } keys %$query); |
173 | return ($cond, [ values %$query ]); |
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174 | } |
175 | |
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176 | sub table { |
177 | shift->_table_name(@_); |
178 | } |
179 | |
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180 | 1; |