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
|
package Alzabo::Runtime::Column;
use strict;
use vars qw($VERSION);
use Alzabo::Runtime;
use Params::Validate qw( :all );
Params::Validate::validation_options( on_fail => sub { Alzabo::Exception::Params->throw( error => join '', @_ ) } );
use base qw(Alzabo::Column);
$VERSION = 2.0;
sub alias_clone
{
my $self = shift;
my %p = validate( @_, { table => { isa => 'Alzabo::Runtime::Table' },
} );
my $clone;
%$clone = %$self;
$clone->{table} = $p{table};
bless $clone, ref $self;
return $clone;
}
sub alias
{
my $self = shift;
my %p = validate( @_, { as => { type => SCALAR } } );
my $clone;
%$clone = %$self;
bless $clone, ref $self;
$clone->{alias_name} = $p{as};
$clone->{real_column} = $self;
return $clone;
}
sub alias_name
{
return $_[0]->{alias_name} || $_[0]->{name};
}
1;
__END__
=head1 NAME
Alzabo::Runtime::Column - Column objects
=head1 SYNOPSIS
use Alzabo::Runtime::Column;
=for pod_merge DESCRIPTION
=head1 INHERITS FROM
C<Alzabo::Column>
=for pod_merge merged
=for pod_merge METHODS
=head2 alias
Takes the following parameters:
=over 4
=item * as => $name
=back
This method returns an object that can be used in calls to the table
and schema C<select()> methods in order to change the name given to
the column if C<next_as_hash()> is called on the
L<C<Alzabo::DriverStatement>|Alzabo::Driver/Alzabo::DriverStatment>
returned by the aforementioned C<select()> method.
=head1 AUTHOR
Dave Rolsky, <autarch@urth.org>
=cut
|
