line |
stmt |
bran |
cond |
sub |
pod |
time |
code |
1
|
|
|
|
|
|
|
package Rose::DB::Object::Iterator; |
2
|
|
|
|
|
|
|
|
3
|
61
|
|
|
61
|
|
435
|
use strict; |
|
61
|
|
|
|
|
126
|
|
|
61
|
|
|
|
|
1732
|
|
4
|
|
|
|
|
|
|
|
5
|
61
|
|
|
61
|
|
317
|
use Carp(); |
|
61
|
|
|
|
|
143
|
|
|
61
|
|
|
|
|
904
|
|
6
|
|
|
|
|
|
|
|
7
|
61
|
|
|
61
|
|
732
|
use Rose::Object; |
|
61
|
|
|
|
|
288
|
|
|
61
|
|
|
|
|
4401
|
|
8
|
|
|
|
|
|
|
our @ISA = qw(Rose::Object); |
9
|
|
|
|
|
|
|
|
10
|
|
|
|
|
|
|
our $VERSION = '0.759'; |
11
|
|
|
|
|
|
|
|
12
|
|
|
|
|
|
|
use Rose::Object::MakeMethods::Generic |
13
|
|
|
|
|
|
|
( |
14
|
61
|
|
|
|
|
644
|
scalar => |
15
|
|
|
|
|
|
|
[ |
16
|
|
|
|
|
|
|
'error', |
17
|
|
|
|
|
|
|
'_count', |
18
|
|
|
|
|
|
|
'_next_code', |
19
|
|
|
|
|
|
|
'_finish_code', |
20
|
|
|
|
|
|
|
'_destroy_code', |
21
|
|
|
|
|
|
|
], |
22
|
|
|
|
|
|
|
|
23
|
|
|
|
|
|
|
'boolean' => 'active', |
24
|
61
|
|
|
61
|
|
1043
|
); |
|
61
|
|
|
|
|
9456
|
|
25
|
|
|
|
|
|
|
|
26
|
|
|
|
|
|
|
sub next |
27
|
|
|
|
|
|
|
{ |
28
|
0
|
|
|
0
|
1
|
|
my($self) = shift; |
29
|
0
|
|
|
|
|
|
my $ret = $self->_next_code->($self, @_); |
30
|
0
|
0
|
|
|
|
|
$self->active(0) unless($ret); |
31
|
0
|
|
|
|
|
|
return $ret; |
32
|
|
|
|
|
|
|
} |
33
|
|
|
|
|
|
|
|
34
|
|
|
|
|
|
|
sub finish |
35
|
|
|
|
|
|
|
{ |
36
|
0
|
|
|
0
|
1
|
|
my($self) = shift; |
37
|
0
|
|
|
|
|
|
$self->active(0); |
38
|
0
|
|
|
0
|
|
|
$self->_next_code(sub { 0 }); |
|
0
|
|
|
|
|
|
|
39
|
0
|
|
|
|
|
|
return $self->_finish_code->($self, @_); |
40
|
|
|
|
|
|
|
} |
41
|
|
|
|
|
|
|
|
42
|
|
|
|
|
|
|
sub DESTROY |
43
|
|
|
|
|
|
|
{ |
44
|
0
|
|
|
0
|
|
|
my($self) = shift; |
45
|
|
|
|
|
|
|
|
46
|
0
|
0
|
|
|
|
|
if($self->active) |
|
|
0
|
|
|
|
|
|
47
|
|
|
|
|
|
|
{ |
48
|
0
|
|
|
|
|
|
$self->finish; |
49
|
|
|
|
|
|
|
} |
50
|
|
|
|
|
|
|
elsif(my $code = $self->_destroy_code) |
51
|
|
|
|
|
|
|
{ |
52
|
0
|
|
|
|
|
|
$code->($self); |
53
|
|
|
|
|
|
|
} |
54
|
|
|
|
|
|
|
} |
55
|
|
|
|
|
|
|
|
56
|
0
|
|
|
0
|
1
|
|
sub total { shift->{'_count'} } |
57
|
|
|
|
|
|
|
|
58
|
|
|
|
|
|
|
1; |
59
|
|
|
|
|
|
|
|
60
|
|
|
|
|
|
|
__END__ |
61
|
|
|
|
|
|
|
|
62
|
|
|
|
|
|
|
=head1 NAME |
63
|
|
|
|
|
|
|
|
64
|
|
|
|
|
|
|
Rose::DB::Object::Iterator - Iterate over a series of Rose::DB::Objects. |
65
|
|
|
|
|
|
|
|
66
|
|
|
|
|
|
|
=head1 SYNOPSIS |
67
|
|
|
|
|
|
|
|
68
|
|
|
|
|
|
|
$iterator = Rose::DB::Object::Manager->get_objects_iterator(...); |
69
|
|
|
|
|
|
|
|
70
|
|
|
|
|
|
|
while($object = $iterator->next) |
71
|
|
|
|
|
|
|
{ |
72
|
|
|
|
|
|
|
# do stuff with $object... |
73
|
|
|
|
|
|
|
|
74
|
|
|
|
|
|
|
if(...) # bail out early |
75
|
|
|
|
|
|
|
{ |
76
|
|
|
|
|
|
|
$iterator->finish; |
77
|
|
|
|
|
|
|
last; |
78
|
|
|
|
|
|
|
} |
79
|
|
|
|
|
|
|
} |
80
|
|
|
|
|
|
|
|
81
|
|
|
|
|
|
|
if($iterator->error) |
82
|
|
|
|
|
|
|
{ |
83
|
|
|
|
|
|
|
print "There was an error: ", $iterator->error; |
84
|
|
|
|
|
|
|
} |
85
|
|
|
|
|
|
|
else |
86
|
|
|
|
|
|
|
{ |
87
|
|
|
|
|
|
|
print "Total: ", $iterator->total; |
88
|
|
|
|
|
|
|
} |
89
|
|
|
|
|
|
|
|
90
|
|
|
|
|
|
|
=head1 DESCRIPTION |
91
|
|
|
|
|
|
|
|
92
|
|
|
|
|
|
|
L<Rose::DB::Object::Iterator> is an iterator object that traverses a database query, returning L<Rose::DB::Object>-derived objects for each row. L<Rose::DB::Object::Iterator> objects are created by calls to the L<get_objects_iterator|Rose::DB::Object::Manager/get_objects_iterator> method of L<Rose::DB::Object::Manager> or one of its subclasses. |
93
|
|
|
|
|
|
|
|
94
|
|
|
|
|
|
|
=head1 OBJECT METHODS |
95
|
|
|
|
|
|
|
|
96
|
|
|
|
|
|
|
=over 4 |
97
|
|
|
|
|
|
|
|
98
|
|
|
|
|
|
|
=item B<error> |
99
|
|
|
|
|
|
|
|
100
|
|
|
|
|
|
|
Returns the text message associated with the last error, or false if there was no error. |
101
|
|
|
|
|
|
|
|
102
|
|
|
|
|
|
|
=item B<finish> |
103
|
|
|
|
|
|
|
|
104
|
|
|
|
|
|
|
Prematurely stop the iteration (i.e., before iterating over all of the available objects). |
105
|
|
|
|
|
|
|
|
106
|
|
|
|
|
|
|
=item B<next> |
107
|
|
|
|
|
|
|
|
108
|
|
|
|
|
|
|
Return the next L<Rose::DB::Object>-derived object. Returns false (but defined) if there are no more objects to iterate over, or undef if there was an error. |
109
|
|
|
|
|
|
|
|
110
|
|
|
|
|
|
|
=item B<total> |
111
|
|
|
|
|
|
|
|
112
|
|
|
|
|
|
|
Returns the total number of objects iterated over so far. |
113
|
|
|
|
|
|
|
|
114
|
|
|
|
|
|
|
=back |
115
|
|
|
|
|
|
|
|
116
|
|
|
|
|
|
|
=head1 AUTHOR |
117
|
|
|
|
|
|
|
|
118
|
|
|
|
|
|
|
John C. Siracusa (siracusa@gmail.com) |
119
|
|
|
|
|
|
|
|
120
|
|
|
|
|
|
|
=head1 LICENSE |
121
|
|
|
|
|
|
|
|
122
|
|
|
|
|
|
|
Copyright (c) 2010 by John C. Siracusa. All rights reserved. This program is |
123
|
|
|
|
|
|
|
free software; you can redistribute it and/or modify it under the same terms |
124
|
|
|
|
|
|
|
as Perl itself. |