This file is indexed.

/usr/share/perl5/DBIx/Class/DynamicDefault.pm is in libdbix-class-dynamicdefault-perl 0.03-1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
use strict;
use warnings;

package DBIx::Class::DynamicDefault;

use parent 'DBIx::Class';

our $VERSION = '0.03';

__PACKAGE__->mk_classdata(
    __column_dynamic_default_triggers => {
        on_update => [], on_create => [],
    },
);

=head1 NAME

DBIx::Class::DynamicDefault - Automatically set and update fields

=head1 SYNOPSIS

  package My::Schema::SomeTable;

  __PACKAGE__->load_components(qw/DynamicDefault ... Core/);

  __PACKAGE__->add_columns(
          quux          => { data_type => 'integer' },
          quux_plus_one => { data_type => 'integer',
                             dynamic_default_on_create => \&quux_plus_one_default,
                             dynamic_default_on_update => 'quux_plus_one_default', },
          last_changed  => { data_type => 'integer',
                             dynamic_default_on_create => 'now',
                             dynamic_default_on_update => 'now, },
  );

  sub quux_plus_one_default {
      my ($self) = @_;
      return $self->quux + 1;
  }

  sub now {
      return DateTime->now->epoch;
  }

Now, any update or create actions will set the specified columns to the value
returned by the callback you specified as a method name or code reference.

=head1 DESCRIPTION

Automatically set and update fields with values calculated at runtime.

=cut

sub add_columns {
    my $self = shift;

    $self->next::method(@_);

    my @update_columns;
    my @create_columns;

    for my $column ($self->columns) {
        my $info = $self->column_info($column);

        my $update_trigger = $info->{dynamic_default_on_update};
        push @update_columns, [$column => $update_trigger, $info->{always_update} || 0]
            if $update_trigger;

        my $create_trigger = $info->{dynamic_default_on_create};
        push @create_columns, [$column => $create_trigger]
            if $create_trigger;
    }

    if (@update_columns || @create_columns) {
        $self->__column_dynamic_default_triggers({
            on_update => [sort { $b->[2] <=> $a->[2] } @update_columns],
            on_create => \@create_columns,
        });
    }
}

sub insert {
    my $self = shift;

    my @columns = @{ $self->__column_dynamic_default_triggers->{on_create} };
    for my $column (@columns) {
        my $column_name = $column->[0];
        next if defined $self->get_column($column_name);

        my $meth = $column->[1];
        my $default_value = $self->$meth;

        my $accessor = $self->column_info($column_name)->{accessor} || $column_name;
        $self->$accessor($default_value);
    }

    return $self->next::method(@_);
}

sub update {
    my ($self, $upd) = @_;

    $self->set_inflated_columns($upd) if $upd;
    my %dirty = $self->get_dirty_columns;

    my @columns = @{ $self->__column_dynamic_default_triggers->{on_update} };
    for my $column (@columns) {
        my $column_name = $column->[0];
        next if !%dirty && !$column->[2];
        next if exists $dirty{$column_name};

        my $meth = $column->[1];
        my $default_value = $self->$meth;

        my $accessor = $self->column_info($column_name)->{accessor} || $column_name;
        $self->$accessor($default_value);

        $dirty{$column_name} = 1;
    }

    return $self->next::method;
}

=head1 OPTIONS

=head2 dynamic_default_on_create

  dynamic_default_on_create => sub { ... }

  dynamic_default_on_create => 'method_name'

When inserting a new row all columns with the C<dynamic_default_on_create>
option will be set to the return value of the specified callback unless the
columns value has been explicitly set. The callback, that'll be invoked with
the row object as its only argument, may be a code reference or a method name.

=head2 dynamic_default_on_update

  dynamic_default_on_update => sub { ... }

  dynamic_default_on_update => 'method_name'

When updating a row all columns with the C<dynamic_default_on_update> option
will be set to the return value of the specified callback unless the columns
value has been explicitly set.

Columns will only be altered if other dirty columns exist. See C<always_update>
on how to change this.

=head2 always_update

  always_update => 1

When setting C<always_update> to 1 C<dynamic_default_on_update> callbacks will
always be invoked, even if no other columns are dirty.

=head1 AUTHOR

Florian Ragwitz E<lt>rafl@debian.orgE<gt>

=head1 LICENSE

This software is copyright (c) 2008 by Florian Ragwitz.

This is free software; you can redistribute it and/or modify it under
the same terms as perl itself.

=cut

1;