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
|
# -*- Mode: perl; indent-tabs-mode: nil -*-
#
# The contents of this file are subject to the Mozilla Public
# License Version 1.1 (the "License"); you may not use this file
# except in compliance with the License. You may obtain a copy of
# the License at http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS
# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
# implied. See the License for the specific language governing
# rights and limitations under the License.
#
# The Original Code is the Bugzilla Bug Tracking System.
#
# The Initial Developer of the Original Code is BugzillaSource, Inc.
# Portions created by the Initial Developer are Copyright (C) 2011 the
# Initial Developer. All Rights Reserved.
#
# Contributor(s):
# Max Kanat-Alexander <mkanat@bugzilla.org>
package Bugzilla::Search::Clause;
use strict;
use Bugzilla::Error;
use Bugzilla::Search::Condition qw(condition);
use Bugzilla::Util qw(trick_taint);
sub new {
my ($class, $joiner) = @_;
if ($joiner and $joiner ne 'OR' and $joiner ne 'AND') {
ThrowCodeError('search_invalid_joiner', { joiner => $joiner });
}
# This will go into SQL directly so needs to be untainted.
trick_taint($joiner) if $joiner;
bless { joiner => $joiner || 'AND' }, $class;
}
sub children {
my ($self) = @_;
$self->{children} ||= [];
return $self->{children};
}
sub joiner { return $_[0]->{joiner} }
sub has_children {
my ($self) = @_;
return scalar(@{ $self->children }) > 0 ? 1 : 0;
}
sub has_valid_conditions {
my ($self) = @_;
my $children = $self->children;
return 1 if grep { $_->isa('Bugzilla::Search::Condition')
&& $_->translated } @$children;
foreach my $child (@$children) {
next if $child->isa('Bugzilla::Search::Condition');
return 1 if $child->has_valid_conditions;
}
return 0;
}
sub add {
my $self = shift;
my $children = $self->children;
if (@_ == 3) {
push(@$children, condition(@_));
return;
}
my ($child) = @_;
return if !defined $child;
$child->isa(__PACKAGE__) || $child->isa('Bugzilla::Search::Condition')
|| die 'child not the right type: ' . $child;
push(@{ $self->children }, $child);
}
sub negate {
my ($self, $value) = @_;
if (@_ == 2) {
$self->{negate} = $value ? 1 : 0;
}
return $self->{negate};
}
sub walk_conditions {
my ($self, $callback) = @_;
foreach my $child (@{ $self->children }) {
if ($child->isa('Bugzilla::Search::Condition')) {
$callback->($child);
}
else {
$child->walk_conditions($callback);
}
}
}
sub as_string {
my ($self) = @_;
my @strings;
foreach my $child (@{ $self->children }) {
next if $child->isa(__PACKAGE__) && !$child->has_valid_conditions;
next if $child->isa('Bugzilla::Search::Condition')
&& !$child->translated;
my $string = $child->as_string;
if ($self->joiner eq 'AND') {
$string = "( $string )" if $string =~ /OR/;
}
else {
$string = "( $string )" if $string =~ /AND/;
}
push(@strings, $string);
}
my $sql = join(' ' . $self->joiner . ' ', @strings);
$sql = "NOT( $sql )" if $sql && $self->negate;
return $sql;
}
1;
|
