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
|
use strict;
use warnings;
package Search::GIN::Driver;
BEGIN {
$Search::GIN::Driver::VERSION = '0.08';
}
# ABSTRACT:
use Moose::Role;
use Data::Stream::Bulk::Util qw(bulk nil cat unique);
use namespace::clean -except => [qw(meta)];
requires qw(
insert_entry
remove_ids
fetch_entry
);
sub fetch_entry_streams {
my ( $self, %args ) = @_;
map { $self->fetch_entry($_) } @{ $args{values} };
}
sub fetch_entries {
my ( $self, %args ) = @_;
my $method = "fetch_entries_" . ( $args{method} || "any" );
$self->$method(%args);
}
sub fetch_entries_any {
my ( $self, @args ) = @_;
my @streams = $self->fetch_entry_streams(@args);
return nil unless @streams;
my $res = cat(splice @streams); # splice disposes of @streams ASAP, keeping memory utilization down
if ( $res->loaded ) {
# if all results are already ready, we can uniqify them to avoid
# duplicate calls to ->consistent
return unique($res);
} else {
return $res;
}
}
sub fetch_entries_all {
my ( $self, @args ) = @_;
my @streams = $self->fetch_entry_streams(@args);
return nil unless @streams;
return $streams[0] if @streams == 1;
foreach my $stream ( @streams ) {
return cat(splice @streams) unless $stream->loaded;
}
# if we made it to here then we have a > 1 list of fully realized streams
# we can compute the intersection of the IDs to avoid unnecessary calls to
# ->consistent
# If all streams are known to be sorted this method could be overridden to
# use merge sorting
my $last = shift @streams;
my $n = scalar @streams;
# compute intersection
my %seen;
foreach my $stream ( splice @streams ) {
++$seen{$_} for $stream->all;
}
no warnings 'uninitialized'; # == with undef
return bulk( grep { $seen{$_} == $n } $last->all );
}
1;
=pod
=head1 NAME
Search::GIN::Driver - use Moose::Role;
=head1 VERSION
version 0.08
=head1 SYNOPSIS
use Search::GIN::Driver;
=head1 DESCRIPTION
=head1 AUTHOR
Yuval Kogman <nothingmuch@cpan.org>
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2010 by Yuval Kogman, Infinity Interactive.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut
__END__
|
