summaryrefslogtreecommitdiffstats
path: root/Bugzilla/Search.pm
blob: f30fe733b0e8453a022e1d16d1918563fcb4c89c (plain)
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
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
# -*- 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 Netscape Communications
# Corporation. Portions created by Netscape are
# Copyright (C) 1998 Netscape Communications Corporation. All
# Rights Reserved.
#
# Contributor(s): Gervase Markham <gerv@gerv.net>
#                 Terry Weissman <terry@mozilla.org>
#                 Dan Mosedale <dmose@mozilla.org>
#                 Stephan Niemz <st.n@gmx.net>
#                 Andreas Franke <afranke@mathweb.org>
#                 Myk Melez <myk@mozilla.org>
#                 Michael Schindler <michael@compressconsult.com>
#                 Max Kanat-Alexander <mkanat@bugzilla.org>
#                 Joel Peshkin <bugreport@peshkin.net>

use strict;

# The caller MUST require globals.pl before using this module.

use vars qw($userid);

package Bugzilla::Search;
use base qw(Exporter);
@Bugzilla::Search::EXPORT = qw(IsValidQueryType);

use Bugzilla::Config;
use Bugzilla::Error;
use Bugzilla::Util;
use Bugzilla::Constants;
use Bugzilla::Group;
use Bugzilla::User;

use Date::Format;
use Date::Parse;

# Some fields are not sorted on themselves, but on other fields. 
# We need to have a list of these fields and what they map to.
# Each field points to an array that contains the fields mapped 
# to, in order.
our %specialorder = (
    'bugs.target_milestone' => [ 'ms_order.sortkey','ms_order.value' ],
    'bugs.bug_status' => [ 'bug_status.sortkey','bug_status.value' ],
    'bugs.rep_platform' => [ 'rep_platform.sortkey','rep_platform.value' ],
    'bugs.priority' => [ 'priority.sortkey','priority.value' ],
    'bugs.op_sys' => [ 'op_sys.sortkey','op_sys.value' ],
    'bugs.resolution' => [ 'resolution.sortkey', 'resolution.value' ],
    'bugs.bug_severity' => [ 'bug_severity.sortkey','bug_severity.value' ]
);

# When we add certain fields to the ORDER BY, we need to then add a
# table join to the FROM statement. This hash maps input fields to 
# the join statements that ned to be added.
our %specialorderjoin = (
    'bugs.target_milestone' => 'LEFT JOIN milestones AS ms_order ON ms_order.value = bugs.target_milestone AND ms_order.product_id = bugs.product_id',
    'bugs.bug_status' => 'LEFT JOIN bug_status ON bug_status.value = bugs.bug_status',
    'bugs.rep_platform' => 'LEFT JOIN rep_platform ON rep_platform.value = bugs.rep_platform',
    'bugs.priority' => 'LEFT JOIN priority ON priority.value = bugs.priority',
    'bugs.op_sys' => 'LEFT JOIN op_sys ON op_sys.value = bugs.op_sys',
    'bugs.resolution' => 'LEFT JOIN resolution ON resolution.value = bugs.resolution',
    'bugs.bug_severity' => 'LEFT JOIN bug_severity ON bug_severity.value = bugs.bug_severity'
);

# Create a new Search
# Note that the param argument may be modified by Bugzilla::Search
sub new {
    my $invocant = shift;
    my $class = ref($invocant) || $invocant;
  
    my $self = { @_ };
    bless($self, $class);

    $self->init();
 
    return $self;
}

sub init {
    my $self = shift;
    my $fieldsref = $self->{'fields'};
    my $params = $self->{'params'};
    my $user = $self->{'user'} || Bugzilla->user;

    my $orderref = $self->{'order'} || 0;
    my @inputorder;
    @inputorder = @$orderref if $orderref;
    my @orderby;

    my $debug = 0;

    my @fields;
    my @supptables;
    my @wherepart;
    my @having;
    my @groupby;
    @fields = @$fieldsref if $fieldsref;
    my @specialchart;
    my @andlist;
    my %chartfields;

    my $dbh = Bugzilla->dbh;

    &::GetVersionTable();
    
    # First, deal with all the old hard-coded non-chart-based poop.
    if (grep(/map_assigned_to/, @$fieldsref)) {
        push @supptables, "INNER JOIN profiles AS map_assigned_to " .
                          "ON bugs.assigned_to = map_assigned_to.userid";
    }

    if (grep(/map_reporter/, @$fieldsref)) {
        push @supptables, "INNER JOIN profiles AS map_reporter " .
                          "ON bugs.reporter = map_reporter.userid";
    }

    if (grep(/map_qa_contact/, @$fieldsref)) {
        push @supptables, "LEFT JOIN profiles AS map_qa_contact " .
                          "ON bugs.qa_contact = map_qa_contact.userid";
    }

    if (lsearch($fieldsref, 'map_products.name') >= 0) {
        push @supptables, "INNER JOIN products AS map_products " .
                          "ON bugs.product_id = map_products.id";
    }

    if (lsearch($fieldsref, 'map_classifications.name') >= 0) {
        push @supptables,
                "INNER JOIN classifications AS map_classifications " .
                "ON map_products.classification_id = map_classifications.id";
        push @supptables, "INNER JOIN products AS map_products " .
                          "ON bugs.product_id = map_products.id";
    }

    if (lsearch($fieldsref, 'map_components.name') >= 0) {
        push @supptables, "INNER JOIN components AS map_components " .
                          "ON bugs.component_id = map_components.id";
    }
    
    if (grep($_ =~/AS (actual_time|percentage_complete)$/, @$fieldsref)) {
        push(@supptables, "INNER JOIN longdescs AS ldtime " .
                          "ON ldtime.bug_id = bugs.bug_id");
    }

    my $minvotes;
    if (defined $params->param('votes')) {
        my $c = trim($params->param('votes'));
        if ($c ne "") {
            if ($c !~ /^[0-9]*$/) {
                ThrowUserError("illegal_at_least_x_votes",
                                  { value => $c });
            }
            push(@specialchart, ["votes", "greaterthan", $c - 1]);
        }
    }

    if ($params->param('bug_id')) {
        my $type = "anyexact";
        if ($params->param('bugidtype') && $params->param('bugidtype') eq 'exclude') {
            $type = "nowords";
        }
        push(@specialchart, ["bug_id", $type, join(',', $params->param('bug_id'))]);
    }

    # If the user has selected all of either status or resolution, change to
    # selecting none. This is functionally equivalent, but quite a lot faster.
    # Also, if the status is __open__ or __closed__, translate those
    # into their equivalent lists of open and closed statuses.
    if ($params->param('bug_status')) {
        my @bug_statuses = $params->param('bug_status');
        if (scalar(@bug_statuses) == scalar(@::legal_bug_status) 
            || $bug_statuses[0] eq "__all__")
        {
            $params->delete('bug_status');
        }
        elsif ($bug_statuses[0] eq '__open__') {
            $params->param('bug_status', map(&::IsOpenedState($_) ? $_ : undef, 
                                             @::legal_bug_status));
        }
        elsif ($bug_statuses[0] eq "__closed__") {
            $params->param('bug_status', map(&::IsOpenedState($_) ? undef : $_, 
                                             @::legal_bug_status));
        }
    }
    
    if ($params->param('resolution')) {
        my @resolutions = $params->param('resolution');
        
        if (scalar(@resolutions) == scalar(@::legal_resolution)) {
            $params->delete('resolution');
        }
    }
    
    my @legal_fields = ("product", "version", "rep_platform", "op_sys",
                        "bug_status", "resolution", "priority", "bug_severity",
                        "assigned_to", "reporter", "component", "classification",
                        "target_milestone", "bug_group");

    foreach my $field ($params->param()) {
        if (lsearch(\@legal_fields, $field) != -1) {
            push(@specialchart, [$field, "anyexact",
                                 join(',', $params->param($field))]);
        }
    }

    if ($params->param('keywords')) {
        my $t = $params->param('keywords_type');
        if (!$t || $t eq "or") {
            $t = "anywords";
        }
        push(@specialchart, ["keywords", $t, $params->param('keywords')]);
    }

    foreach my $id ("1", "2") {
        if (!defined ($params->param("email$id"))) {
            next;
        }
        my $email = trim($params->param("email$id"));
        if ($email eq "") {
            next;
        }
        my $type = $params->param("emailtype$id");
        if ($type eq "exact") {
            $type = "anyexact";
            foreach my $name (split(',', $email)) {
                $name = trim($name);
                if ($name) {
                    &::DBNameToIdAndCheck($name);
                }
            }
        }

        my @clist;
        foreach my $field ("assigned_to", "reporter", "cc", "qa_contact") {
            if ($params->param("email$field$id")) {
                push(@clist, $field, $type, $email);
            }
        }
        if ($params->param("emaillongdesc$id")) {
                push(@clist, "commenter", $type, $email);
        }
        if (@clist) {
            push(@specialchart, \@clist);
        } else {
            ThrowUserError("missing_email_type",
                           { email => $email });
        }
    }

    my $chfieldfrom = trim(lc($params->param('chfieldfrom'))) || '';
    my $chfieldto = trim(lc($params->param('chfieldto'))) || '';
    $chfieldfrom = '' if ($chfieldfrom eq 'now');
    $chfieldto = '' if ($chfieldto eq 'now');
    my @chfield = $params->param('chfield');
    my $chvalue = trim($params->param('chfieldvalue')) || '';

    # 2003-05-20: The 'changedin' field is no longer in the UI, but we continue
    # to process it because it will appear in stored queries and bookmarks.
    my $changedin = trim($params->param('changedin')) || '';
    if ($changedin) {
        if ($changedin !~ /^[0-9]*$/) {
            ThrowUserError("illegal_changed_in_last_x_days",
                              { value => $changedin });
        }

        if (!$chfieldfrom
            && !$chfieldto
            && scalar(@chfield) == 1
            && $chfield[0] eq "[Bug creation]")
        {
            # Deal with the special case where the query is using changedin
            # to get bugs created in the last n days by converting the value
            # into its equivalent for the chfieldfrom parameter.
            $chfieldfrom = "-" . ($changedin - 1) . "d";
        }
        else {
            # Oh boy, the general case.  Who knows why the user included
            # the changedin parameter, but do our best to comply.
            push(@specialchart, ["changedin", "lessthan", $changedin + 1]);
        }
    }

    if ($chfieldfrom ne '' || $chfieldto ne '') {
        my $sql_chfrom = $chfieldfrom ? &::SqlQuote(SqlifyDate($chfieldfrom)):'';
        my $sql_chto   = $chfieldto   ? &::SqlQuote(SqlifyDate($chfieldto))  :'';
        my $sql_chvalue = $chvalue ne '' ? &::SqlQuote($chvalue) : '';
        if(!@chfield) {
            push(@wherepart, "bugs.delta_ts >= $sql_chfrom") if ($sql_chfrom);
            push(@wherepart, "bugs.delta_ts <= $sql_chto") if ($sql_chto);
        } else {
            my $bug_creation_clause;
            my @list;
            foreach my $f (@chfield) {
                if ($f eq "[Bug creation]") {
                    # Treat [Bug creation] differently because we need to look
                    # at bugs.creation_ts rather than the bugs_activity table.
                    my @l;
                    push(@l, "bugs.creation_ts >= $sql_chfrom") if($sql_chfrom);
                    push(@l, "bugs.creation_ts <= $sql_chto") if($sql_chto);
                    $bug_creation_clause = "(" . join(' AND ', @l) . ")";
                } else {
                    push(@list, "\nactcheck.fieldid = " . &::GetFieldID($f));
                }
            }

            # @list won't have any elements if the only field being searched
            # is [Bug creation] (in which case we don't need bugs_activity).
            if(@list) {
                my $extra = "";
                if($sql_chfrom) {
                    $extra .= " AND actcheck.bug_when >= $sql_chfrom";
                }
                if($sql_chto) {
                    $extra .= " AND actcheck.bug_when <= $sql_chto";
                }
                if($sql_chvalue) {
                    $extra .= " AND actcheck.added = $sql_chvalue";
                }
                push(@supptables, "INNER JOIN bugs_activity AS actcheck " .
                                   "ON actcheck.bug_id = bugs.bug_id $extra");
            }

            # Now that we're done using @list to determine if there are any
            # regular fields to search (and thus we need bugs_activity),
            # add the [Bug creation] criterion to the list so we can OR it
            # together with the others.
            push(@list, $bug_creation_clause) if $bug_creation_clause;

            push(@wherepart, "(" . join(" OR ", @list) . ")");
        }
    }

    my $sql_deadlinefrom;
    my $sql_deadlineto;
    if (Bugzilla->user->in_group(Param('timetrackinggroup'))){
      my $deadlinefrom;
      my $deadlineto;
            
      if ($params->param('deadlinefrom')){
        $deadlinefrom = $params->param('deadlinefrom');
        validate_date($deadlinefrom)
          || ThrowUserError('illegal_date', {date => $deadlinefrom,
                                             format => 'YYYY-MM-DD'});
        $sql_deadlinefrom = &::SqlQuote($deadlinefrom);
        push(@wherepart, "bugs.deadline >= $sql_deadlinefrom");
      }
      
      if ($params->param('deadlineto')){
        $deadlineto = $params->param('deadlineto');
        validate_date($deadlineto)
          || ThrowUserError('illegal_date', {date => $deadlineto,
                                             format => 'YYYY-MM-DD'});
        $sql_deadlineto = &::SqlQuote($deadlineto);
        push(@wherepart, "bugs.deadline <= $sql_deadlineto");
      }
    }  

    foreach my $f ("short_desc", "long_desc", "bug_file_loc",
                   "status_whiteboard") {
        if (defined $params->param($f)) {
            my $s = trim($params->param($f));
            if ($s ne "") {
                my $n = $f;
                my $q = &::SqlQuote($s);
                my $type = $params->param($f . "_type");
                push(@specialchart, [$f, $type, $s]);
            }
        }
    }

    if (defined $params->param('content')) {
        # Append a new chart implementing content quicksearch
        my $chart;
        for ($chart = 0 ; $params->param("field$chart-0-0") ; $chart++) {};
        $params->param("field$chart-0-0", 'content');
        $params->param("type$chart-0-0", 'matches');
        $params->param("value$chart-0-0", $params->param('content'));
        $params->param("field$chart-0-1", 'short_desc');
        $params->param("type$chart-0-1", 'allwords');
        $params->param("value$chart-0-1", $params->param('content'));
    }

    my $chartid;
    my $sequence = 0;
    # $type_id is used by the code that queries for attachment flags.
    my $type_id = 0;
    my $f;
    my $ff;
    my $t;
    my $q;
    my $v;
    my $term;
    my %funcsbykey;
    my @funcdefs =
        (
         "^(?:assigned_to|reporter|qa_contact),(?:notequals|equals|anyexact),%group\\.(\\w+)%" => sub {
             my $group = $1;
             my $groupid = Bugzilla::Group::ValidateGroupName( $group, ($user));
             $groupid || ThrowUserError('invalid_group_name',{name => $group});
             my @childgroups = @{$user->flatten_group_membership($groupid)};
             my $table = "user_group_map_$chartid";
             push (@supptables, "LEFT JOIN user_group_map AS $table " .
                                "ON $table.user_id = bugs.$f " .
                                "AND $table.group_id IN(" .
                                join(',', @childgroups) . ") " .
                                "AND $table.isbless = 0 " .
                                "AND $table.grant_type IN(" .
                                GRANT_DIRECT . "," . GRANT_REGEXP . ")"
                  );
             if ($t =~ /^not/) {
                 $term = "$table.group_id IS NULL";
             } else {
                 $term = "$table.group_id IS NOT NULL";
             }
          },
         "^(?:assigned_to|reporter|qa_contact),(?:equals|anyexact),(%\\w+%)" => sub {
             $term = "bugs.$f = " . pronoun($1, $user);
          },
         "^(?:assigned_to|reporter|qa_contact),(?:notequals),(%\\w+%)" => sub {
             $term = "bugs.$f <> " . pronoun($1, $user);
          },
         "^(assigned_to|reporter),(?!changed)" => sub {
             my $list = $self->ListIDsForEmail($t, $v);
             if ($list) {
                 $term = "bugs.$f IN ($list)"; 
             } else {
                 push(@supptables, "INNER JOIN profiles AS map_$f " .
                                   "ON bugs.$f = map_$f.userid");
                 $f = "map_$f.login_name";
             }
         },
         "^qa_contact,(?!changed)" => sub {
             push(@supptables, "LEFT JOIN profiles AS map_qa_contact " .
                               "ON bugs.qa_contact = map_qa_contact.userid");
             $f = "COALESCE(map_$f.login_name,'')";
         },

         "^(?:cc),(?:notequals|equals|anyexact),%group\\.(\\w+)%" => sub {
             my $group = $1;
             my $groupid = Bugzilla::Group::ValidateGroupName( $group, ($user));
             $groupid || ThrowUserError('invalid_group_name',{name => $group});
             my @childgroups = @{$user->flatten_group_membership($groupid)};
             my $chartseq = $chartid;
             if ($chartid eq "") {
                 $chartseq = "CC$sequence";
                 $sequence++;
             }
             my $table = "user_group_map_$chartseq";
             push(@supptables, "LEFT JOIN cc AS cc_$chartseq " .
                               "ON bugs.bug_id = cc_$chartseq.bug_id");
             push(@supptables, "LEFT JOIN user_group_map AS $table " .
                                "ON $table.user_id = cc_$chartseq.who " .
                                "AND $table.group_id IN(" .
                                join(',', @childgroups) . ") " .
                                "AND $table.isbless = 0 " .
                                "AND $table.grant_type IN(" .
                                GRANT_DIRECT . "," . GRANT_REGEXP . ")"
                  );
             if ($t =~ /^not/) {
                 $term = "$table.group_id IS NULL";
             } else {
                 $term = "$table.group_id IS NOT NULL";
             }
          },

         "^cc,(?:equals|anyexact),(%\\w+%)" => sub {
             my $match = pronoun($1, $user);
             my $chartseq = $chartid;
             if ($chartid eq "") {
                 $chartseq = "CC$sequence";
                 $sequence++;
             }
             push(@supptables, "LEFT JOIN cc AS cc_$chartseq " .
                               "ON bugs.bug_id = cc_$chartseq.bug_id " .
                               "AND cc_$chartseq.who = $match");
             $term = "cc_$chartseq.who IS NOT NULL";
         },
         "^cc,(?:notequals),(%\\w+%)" => sub {
             my $match = pronoun($1, $user);
             my $chartseq = $chartid;
             if ($chartid eq "") {
                 $chartseq = "CC$sequence";
                 $sequence++;
             }
             push(@supptables, "LEFT JOIN cc AS cc_$chartseq " .
                               "ON bugs.bug_id = cc_$chartseq.bug_id " .
                               "AND cc_$chartseq.who = $match");
             $term = "cc_$chartseq.who IS NULL";
         },
         "^cc,(anyexact|substring|regexp)" => sub {
             my $list;
             $list = $self->ListIDsForEmail($t, $v);
             my $chartseq = $chartid;
             if ($chartid eq "") {
                 $chartseq = "CC$sequence";
                 $sequence++;
             }
             if ($list) {
                 push(@supptables, "LEFT JOIN cc AS cc_$chartseq " .
                                   "ON bugs.bug_id = cc_$chartseq.bug_id " .
                                   "AND cc_$chartseq.who IN($list)");
                 $term = "cc_$chartseq.who IS NOT NULL";
             } else {
                 push(@supptables, "LEFT JOIN cc AS cc_$chartseq " .
                                   "ON bugs.bug_id = cc_$chartseq.bug_id");
                 push(@supptables,
                            "LEFT JOIN profiles AS map_cc_$chartseq " .
                            "ON cc_$chartseq.who = map_cc_$chartseq.userid");

                 $ff = $f = "map_cc_$chartseq.login_name";
                 my $ref = $funcsbykey{",$t"};
                 &$ref;
             }
         },
         "^cc,(?!changed)" => sub {
             my $chartseq = $chartid;
             if ($chartid eq "") {
                 $chartseq = "CC$sequence";
                 $sequence++;
             }
            push(@supptables, "LEFT JOIN cc AS cc_$chartseq " .
                              "ON bugs.bug_id = cc_$chartseq.bug_id");

            $ff = $f = "map_cc_$chartseq.login_name";
            my $ref = $funcsbykey{",$t"};
            &$ref;
            push(@supptables, 
                        "LEFT JOIN profiles AS map_cc_$chartseq " .
                        "ON (cc_$chartseq.who = map_cc_$chartseq.userid " .
                        "AND ($term))"
                );
            $term = "$f IS NOT NULL";
         },

         "^long_?desc,changedby" => sub {
             my $table = "longdescs_$chartid";
             push(@supptables, "INNER JOIN longdescs AS $table " .
                               "ON $table.bug_id = bugs.bug_id");
             my $id = &::DBNameToIdAndCheck($v);
             $term = "$table.who = $id";
         },
         "^long_?desc,changedbefore" => sub {
             my $table = "longdescs_$chartid";
             push(@supptables, "INNER JOIN longdescs AS $table " .
                               "ON $table.bug_id = bugs.bug_id");
             $term = "$table.bug_when < " . &::SqlQuote(SqlifyDate($v));
         },
         "^long_?desc,changedafter" => sub {
             my $table = "longdescs_$chartid";
             push(@supptables, "INNER JOIN longdescs AS $table " .
                               "ON $table.bug_id = bugs.bug_id");
             $term = "$table.bug_when > " . &::SqlQuote(SqlifyDate($v));
         },
         "^content,matches" => sub {
             # "content" is an alias for columns containing text for which we
             # can search a full-text index and retrieve results by relevance, 
             # currently just bug comments (and summaries to some degree).
             # There's only one way to search a full-text index, so we only
             # accept the "matches" operator, which is specific to full-text
             # index searches.

             # Add the longdescs table to the query so we can search comments.
             my $table = "longdescs_$chartid";
             my $extra = "";
             if (Param("insidergroup") 
                 && !UserInGroup(Param("insidergroup")))
             {
                 $extra = "AND $table.isprivate < 1";
             }
             push(@supptables, "INNER JOIN longdescs AS $table " .
                               "ON bugs.bug_id = $table.bug_id $extra");

             # Create search terms to add to the SELECT and WHERE clauses.
             # $term1 searches comments.
             # $term2 searches summaries, which contributes to the relevance
             # ranking in SELECT but doesn't limit which bugs get retrieved.
             my $term1 = $dbh->sql_fulltext_search("${table}.thetext", $v);
             my $term2 = $dbh->sql_fulltext_search("bugs.short_desc", $v);

             # The term to use in the WHERE clause.
             $term = "$term1 > 0";

             # In order to sort by relevance (in case the user requests it),
             # we SELECT the relevance value and give it an alias so we can
             # add it to the SORT BY clause when we build it in buglist.cgi.
             #
             # Note: MySQL calculates relevance for each comment separately,
             # so we need to do some additional calculations to get an overall
             # relevance value, which we do by calculating the average (mean)
             # comment relevance and then adding the summary relevance, if any.
             # This weights summary relevance heavily, which makes sense
             # since summaries are short and thus highly significant.
             #
             # Note: We should be calculating the average relevance of all
             # comments for a bug, not just matching comments, but that's hard
             # (see http://bugzilla.mozilla.org/show_bug.cgi?id=145588#c35).
             my $select_term =
               "(SUM($term1)/COUNT($term1) + $term2) AS relevance";

             # add the column not used in aggregate function explicitly
             push(@groupby, 'bugs.short_desc');

             # Users can specify to display the relevance field, in which case
             # it'll show up in the list of fields being selected, and we need
             # to replace that occurrence with our select term.  Otherwise
             # we can just add the term to the list of fields being selected.
             if (grep($_ eq "relevance", @fields)) {
                 @fields = map($_ eq "relevance" ? $select_term : $_ , @fields);
             }
             else {
                 push(@fields, $select_term);
             }
         },
         "^content," => sub {
             ThrowUserError("search_content_without_matches");
         },
         "^deadline,(?:lessthan|greaterthan|equals|notequals),(-|\\+)?(\\d+)([dDwWmMyY])\$" => sub {
             $v = SqlifyDate($v);
             $q = &::SqlQuote($v);
        },
         "^commenter,(?:equals|anyexact),(%\\w+%)" => sub {
             my $match = pronoun($1, $user);
             my $chartseq = $chartid;
             if ($chartid eq "") {
                 $chartseq = "LD$sequence";
                 $sequence++;
             }
             my $table = "longdescs_$chartseq";
             my $extra = "";
             if (Param("insidergroup") && !UserInGroup(Param("insidergroup"))) {
                 $extra = "AND $table.isprivate < 1";
             }
             push(@supptables, "LEFT JOIN longdescs AS $table " .
                               "ON $table.bug_id = bugs.bug_id $extra " .
                               "AND $table.who IN ($match)");
             $term = "$table.who IS NOT NULL";
         },
         "^commenter," => sub {
             my $chartseq = $chartid;
             my $list;
             $list = $self->ListIDsForEmail($t, $v);
             if ($chartid eq "") {
                 $chartseq = "LD$sequence";
                 $sequence++;
             }
             my $table = "longdescs_$chartseq";
             my $extra = "";
             if (Param("insidergroup") && !UserInGroup(Param("insidergroup"))) {
                 $extra = "AND $table.isprivate < 1";
             }
             if ($list) {
                 push(@supptables, "LEFT JOIN longdescs AS $table " .
                                   "ON $table.bug_id = bugs.bug_id $extra " .
                                   "AND $table.who IN ($list)");
                 $term = "$table.who IS NOT NULL";
             } else {
                 push(@supptables, "LEFT JOIN longdescs AS $table " .
                                   "ON $table.bug_id = bugs.bug_id $extra");
                 push(@supptables, "LEFT JOIN profiles AS map_$table " .
                                   "ON $table.who = map_$table.userid");
                 $ff = $f = "map_$table.login_name";
                 my $ref = $funcsbykey{",$t"};
                 &$ref;
             }
         },
         "^long_?desc," => sub {
             my $table = "longdescs_$chartid";
             my $extra = "";
             if (Param("insidergroup") && !UserInGroup(Param("insidergroup"))) {
                 $extra = "AND $table.isprivate < 1";
             }
             push(@supptables, "INNER JOIN longdescs AS $table " .
                               "ON $table.bug_id = bugs.bug_id $extra");
             $f = "$table.thetext";
         },
         "^work_time,changedby" => sub {
             my $table = "longdescs_$chartid";
             push(@supptables, "INNER JOIN longdescs AS $table " .
                               "ON $table.bug_id = bugs.bug_id");
             my $id = &::DBNameToIdAndCheck($v);
             $term = "(($table.who = $id";
             $term .= ") AND ($table.work_time <> 0))";
         },
         "^work_time,changedbefore" => sub {
             my $table = "longdescs_$chartid";
             push(@supptables, "INNER JOIN longdescs AS $table " .
                               "ON $table.bug_id = bugs.bug_id");
             $term = "(($table.bug_when < " . &::SqlQuote(SqlifyDate($v));
             $term .= ") AND ($table.work_time <> 0))";
         },
         "^work_time,changedafter" => sub {
             my $table = "longdescs_$chartid";
             push(@supptables, "INNER JOIN longdescs AS $table " .
                               "ON $table.bug_id = bugs.bug_id");
             $term = "(($table.bug_when > " . &::SqlQuote(SqlifyDate($v));
             $term .= ") AND ($table.work_time <> 0))";
         },
         "^work_time," => sub {
             my $table = "longdescs_$chartid";
             push(@supptables, "INNER JOIN longdescs AS $table " .
                               "ON $table.bug_id = bugs.bug_id");
             $f = "$table.work_time";
         },
         "^percentage_complete," => sub {
             my $oper;
             if ($t eq "equals") {
                 $oper = "=";
             } elsif ($t eq "greaterthan") {
                 $oper = ">";
             } elsif ($t eq "lessthan") {
                 $oper = "<";
             } elsif ($t eq "notequal") {
                 $oper = "<>";
             } elsif ($t eq "regexp") {
                 $oper = $dbh->sql_regexp();
             } elsif ($t eq "notregexp") {
                 $oper = $dbh->sql_not_regexp();
             } else {
                 $oper = "noop";
             }
             if ($oper ne "noop") {
                 my $table = "longdescs_$chartid";
                 push(@supptables, "INNER JOIN longdescs AS $table " .
                                   "ON $table.bug_id = bugs.bug_id");
                 my $expression = "(100 * ((SUM($table.work_time) *
                                             COUNT(DISTINCT $table.bug_when) /
                                             COUNT(bugs.bug_id)) /
                                            ((SUM($table.work_time) *
                                              COUNT(DISTINCT $table.bug_when) /
                                              COUNT(bugs.bug_id)) +
                                             bugs.remaining_time)))";
                 push(@having, "$expression $oper " . &::SqlQuote($v));
                 push(@groupby, "bugs.remaining_time");
             }
             $term = "0=0";
         },
         "^bug_group,(?!changed)" => sub {
            push(@supptables,
                    "LEFT JOIN bug_group_map AS bug_group_map_$chartid " .
                    "ON bugs.bug_id = bug_group_map_$chartid.bug_id");

            push(@supptables,
                    "LEFT JOIN groups AS groups_$chartid " .
                    "ON groups_$chartid.id = bug_group_map_$chartid.group_id");
            $f = "groups_$chartid.name";
         },
         "^attachments\..*," => sub {
             my $table = "attachments_$chartid";
             my $extra = "";
             if (Param("insidergroup") && !UserInGroup(Param("insidergroup"))) {
                 $extra = "AND $table.isprivate = 0";
             }
             push(@supptables, "INNER JOIN attachments AS $table " .
                               "ON bugs.bug_id = $table.bug_id $extra");
             $f =~ m/^attachments\.(.*)$/;
             my $field = $1;
             if ($t eq "changedby") {
                 $v = &::DBNameToIdAndCheck($v);
                 $q = &::SqlQuote($v);
                 $field = "submitter_id";
                 $t = "equals";
             } elsif ($t eq "changedbefore") {
                 $v = SqlifyDate($v);
                 $q = &::SqlQuote($v);
                 $field = "creation_ts";
                 $t = "lessthan";
             } elsif ($t eq "changedafter") {
                 $v = SqlifyDate($v);
                 $q = &::SqlQuote($v);
                 $field = "creation_ts";
                 $t = "greaterthan";
             }
             if ($field eq "ispatch" && $v ne "0" && $v ne "1") {
                 ThrowUserError("illegal_attachment_is_patch");
             }
             if ($field eq "isobsolete" && $v ne "0" && $v ne "1") {
                 ThrowUserError("illegal_is_obsolete");
             }
             $f = "$table.$field";
         },
         "^flagtypes.name," => sub {
             # Matches bugs by flag name/status.
             # Note that--for the purposes of querying--a flag comprises
             # its name plus its status (i.e. a flag named "review" 
             # with a status of "+" can be found by searching for "review+").
             
             # Don't do anything if this condition is about changes to flags,
             # as the generic change condition processors can handle those.
             return if ($t =~ m/^changed/);
             
             # Add the flags and flagtypes tables to the query.  We do 
             # a left join here so bugs without any flags still match 
             # negative conditions (f.e. "flag isn't review+").
             my $flags = "flags_$chartid";
             push(@supptables, "LEFT JOIN flags AS $flags " . 
                               "ON bugs.bug_id = $flags.bug_id " .
                               "AND $flags.is_active = 1");
             my $flagtypes = "flagtypes_$chartid";
             push(@supptables, "LEFT JOIN flagtypes AS $flagtypes " . 
                               "ON $flags.type_id = $flagtypes.id");
             
             # Generate the condition by running the operator-specific
             # function. Afterwards the condition resides in the global $term
             # variable.
             $ff = $dbh->sql_string_concat("${flagtypes}.name",
                                           "$flags.status");
             &{$funcsbykey{",$t"}};
             
             # If this is a negative condition (f.e. flag isn't "review+"),
             # we only want bugs where all flags match the condition, not 
             # those where any flag matches, which needs special magic.
             # Instead of adding the condition to the WHERE clause, we select
             # the number of flags matching the condition and the total number
             # of flags on each bug, then compare them in a HAVING clause.
             # If the numbers are the same, all flags match the condition,
             # so this bug should be included.
             if ($t =~ m/not/) {
                push(@having,
                     "SUM(CASE WHEN $ff IS NOT NULL THEN 1 ELSE 0 END) = " .
                     "SUM(CASE WHEN $term THEN 1 ELSE 0 END)");
                $term = "0=0";
             }
         },
         "^requestees.login_name," => sub {
             my $flags = "flags_$chartid";
             push(@supptables, "LEFT JOIN flags AS $flags " .
                               "ON bugs.bug_id = $flags.bug_id " .
                               "AND $flags.is_active = 1");
             push(@supptables, "LEFT JOIN profiles AS requestees_$chartid " .
                               "ON $flags.requestee_id = requestees_$chartid.userid");
             $f = "requestees_$chartid.login_name";
         },
         "^setters.login_name," => sub {
             my $flags = "flags_$chartid";
             push(@supptables, "LEFT JOIN flags AS $flags " .
                               "ON bugs.bug_id = $flags.bug_id " .
                               "AND $flags.is_active = 1");
             push(@supptables, "LEFT JOIN profiles AS setters_$chartid " .
                               "ON $flags.setter_id = setters_$chartid.userid");
             $f = "setters_$chartid.login_name";
         },
         
         "^changedin," => sub {
             $f = "(" . $dbh->sql_to_days('NOW()') . " - " .
                        $dbh->sql_to_days('bugs.delta_ts') . ")";
         },

         "^component,(?!changed)" => sub {
             $f = $ff = "components.name";
             $funcsbykey{",$t"}->();
             $term = build_subselect("bugs.component_id",
                                     "components.id",
                                     "components",
                                     $term);
         },

         "^product,(?!changed)" => sub {
             # Generate the restriction condition
             $f = $ff = "products.name";
             $funcsbykey{",$t"}->();
             $term = build_subselect("bugs.product_id",
                                     "products.id",
                                     "products",
                                     $term);
         },

         "^classification,(?!changed)" => sub {
             # Generate the restriction condition
             push @supptables, "INNER JOIN products AS map_products " .
                               "ON bugs.product_id = map_products.id";
             $f = $ff = "classifications.name";
             $funcsbykey{",$t"}->();
             $term = build_subselect("map_products.classification_id",
                                     "classifications.id",
                                     "classifications",
                                     $term);
         },

         "^keywords,(?!changed)" => sub {
             &::GetVersionTable();
             my @list;
             my $table = "keywords_$chartid";
             foreach my $value (split(/[\s,]+/, $v)) {
                 if ($value eq '') {
                     next;
                 }
                 my $id = &::GetKeywordIdFromName($value);
                 if ($id) {
                     push(@list, "$table.keywordid = $id");
                 }
                 else {
                     ThrowUserError("unknown_keyword",
                                    { keyword => $v });
                 }
             }
             my $haveawordterm;
             if (@list) {
                 $haveawordterm = "(" . join(' OR ', @list) . ")";
                 if ($t eq "anywords") {
                     $term = $haveawordterm;
                 } elsif ($t eq "allwords") {
                     my $ref = $funcsbykey{",$t"};
                     &$ref;
                     if ($term && $haveawordterm) {
                         $term = "(($term) AND $haveawordterm)";
                     }
                 }
             }
             if ($term) {
                 push(@supptables, "LEFT JOIN keywords AS $table " .
                                   "ON $table.bug_id = bugs.bug_id");
             }
         },

         "^dependson,(?!changed)" => sub {
                my $table = "dependson_" . $chartid;
                $ff = "$table.$f";
                my $ref = $funcsbykey{",$t"};
                &$ref;
                push(@supptables, "LEFT JOIN dependencies AS $table " .
                                  "ON $table.blocked = bugs.bug_id " .
                                  "AND ($term)");
                $term = "$ff IS NOT NULL";
         },

         "^blocked,(?!changed)" => sub {
                my $table = "blocked_" . $chartid;
                $ff = "$table.$f";
                my $ref = $funcsbykey{",$t"};
                &$ref;
                push(@supptables, "LEFT JOIN dependencies AS $table " .
                                  "ON $table.dependson = bugs.bug_id " .
                                  "AND ($term)");
                $term = "$ff IS NOT NULL";
         },

         "^alias,(?!changed)" => sub {
             $ff = "COALESCE(bugs.alias, '')";
             my $ref = $funcsbykey{",$t"};
             &$ref;
         },

         "^owner_idle_time,(greaterthan|lessthan)" => sub {
                my $table = "idle_" . $chartid;
                $v =~ /^(\d+)\s*([hHdDwWmMyY])?$/;
                my $quantity = $1;
                my $unit = lc $2;
                my $unitinterval = 'DAY';
                if ($unit eq 'h') {
                    $unitinterval = 'HOUR';
                } elsif ($unit eq 'w') {
                    $unitinterval = ' * 7 DAY';
                } elsif ($unit eq 'm') {
                    $unitinterval = 'MONTH';
                } elsif ($unit eq 'y') {
                    $unitinterval = 'YEAR';
                }
                my $cutoff = "NOW() - " .
                             $dbh->sql_interval("$quantity $unitinterval");
                my $assigned_fieldid = &::GetFieldID('assigned_to');
                push(@supptables, "LEFT JOIN longdescs AS comment_$table " .
                                  "ON comment_$table.who = bugs.assigned_to " .
                                  "AND comment_$table.bug_id = bugs.bug_id " .
                                  "AND comment_$table.bug_when > $cutoff");
                push(@supptables, "LEFT JOIN bugs_activity AS activity_$table " .
                                  "ON (activity_$table.who = bugs.assigned_to " .
                                  "OR activity_$table.fieldid = $assigned_fieldid) " .
                                  "AND activity_$table.bug_id = bugs.bug_id " .
                                  "AND activity_$table.bug_when > $cutoff");
                if ($t =~ /greater/) {
                    push(@wherepart, "(comment_$table.who IS NULL " .
                                     "AND activity_$table.who IS NULL)");
                } else {
                    push(@wherepart, "(comment_$table.who IS NOT NULL " .
                                     "OR activity_$table.who IS NOT NULL)");
                }
                $term = "0=0";
         },

         ",equals" => sub {
             $term = "$ff = $q";
         },
         ",notequals" => sub {
             $term = "$ff != $q";
         },
         ",casesubstring" => sub {
             $term = $dbh->sql_position($q, $ff) . " > 0";
         },
         ",substring" => sub {
             $term = $dbh->sql_position(lc($q), "LOWER($ff)") . " > 0";
         },
         ",substr" => sub {
             $funcsbykey{",substring"}->();
         },
         ",notsubstring" => sub {
             $term = $dbh->sql_position(lc($q), "LOWER($ff)") . " = 0";
         },
         ",regexp" => sub {
             $term = "$ff " . $dbh->sql_regexp() . " $q";
         },
         ",notregexp" => sub {
             $term = "$ff " . $dbh->sql_not_regexp() . " $q";
         },
         ",lessthan" => sub {
             $term = "$ff < $q";
         },
         ",matches" => sub {
             ThrowUserError("search_content_without_matches");
         },
         ",greaterthan" => sub {
             $term = "$ff > $q";
         },
         ",anyexact" => sub {
             my @list;
             foreach my $w (split(/,/, $v)) {
                 if ($w eq "---" && $f !~ /milestone/) {
                     $w = "";
                 }
                 push(@list, &::SqlQuote($w));
             }
             if (@list) {
                 $term = "$ff IN (" . join (',', @list) . ")";
             }
         },
         ",anywordssubstr" => sub {
             $term = join(" OR ", @{GetByWordListSubstr($ff, $v)});
         },
         ",allwordssubstr" => sub {
             $term = join(" AND ", @{GetByWordListSubstr($ff, $v)});
         },
         ",nowordssubstr" => sub {
             my @list = @{GetByWordListSubstr($ff, $v)};
             if (@list) {
                 $term = "NOT (" . join(" OR ", @list) . ")";
             }
         },
         ",anywords" => sub {
             $term = join(" OR ", @{GetByWordList($ff, $v)});
         },
         ",allwords" => sub {
             $term = join(" AND ", @{GetByWordList($ff, $v)});
         },
         ",nowords" => sub {
             my @list = @{GetByWordList($ff, $v)};
             if (@list) {
                 $term = "NOT (" . join(" OR ", @list) . ")";
             }
         },
         ",(changedbefore|changedafter)" => sub {
             my $operator = ($t =~ /before/) ? '<' : '>';
             my $table = "act_$chartid";
             my $fieldid = $chartfields{$f};
             if (!$fieldid) {
                 ThrowCodeError("invalid_field_name", {field => $f});
             }
             push(@supptables, "LEFT JOIN bugs_activity AS $table " .
                               "ON $table.bug_id = bugs.bug_id " .
                               "AND $table.fieldid = $fieldid " .
                               "AND $table.bug_when $operator " . 
                               &::SqlQuote(SqlifyDate($v)) );
             $term = "($table.bug_when IS NOT NULL)";
         },
         ",(changedfrom|changedto)" => sub {
             my $operator = ($t =~ /from/) ? 'removed' : 'added';
             my $table = "act_$chartid";
             my $fieldid = $chartfields{$f};
             if (!$fieldid) {
                 ThrowCodeError("invalid_field_name", {field => $f});
             }
             push(@supptables, "LEFT JOIN bugs_activity AS $table " .
                               "ON $table.bug_id = bugs.bug_id " .
                               "AND $table.fieldid = $fieldid " .
                               "AND $table.$operator = $q");
             $term = "($table.bug_when IS NOT NULL)";
         },
         ",changedby" => sub {
             my $table = "act_$chartid";
             my $fieldid = $chartfields{$f};
             if (!$fieldid) {
                 ThrowCodeError("invalid_field_name", {field => $f});
             }
             my $id = &::DBNameToIdAndCheck($v);
             push(@supptables, "LEFT JOIN bugs_activity AS $table " .
                               "ON $table.bug_id = bugs.bug_id " .
                               "AND $table.fieldid = $fieldid " .
                               "AND $table.who = $id");
             $term = "($table.bug_when IS NOT NULL)";
         },
         );
    my @funcnames;
    while (@funcdefs) {
        my $key = shift(@funcdefs);
        my $value = shift(@funcdefs);
        if ($key =~ /^[^,]*$/) {
            die "All defs in %funcs must have a comma in their name: $key";
        }
        if (exists $funcsbykey{$key}) {
            die "Duplicate key in %funcs: $key";
        }
        $funcsbykey{$key} = $value;
        push(@funcnames, $key);
    }

    # first we delete any sign of "Chart #-1" from the HTML form hash
    # since we want to guarantee the user didn't hide something here
    my @badcharts = grep /^(field|type|value)-1-/, $params->param();
    foreach my $field (@badcharts) {
        $params->delete($field);
    }

    # now we take our special chart and stuff it into the form hash
    my $chart = -1;
    my $row = 0;
    foreach my $ref (@specialchart) {
        my $col = 0;
        while (@$ref) {
            $params->param("field$chart-$row-$col", shift(@$ref));
            $params->param("type$chart-$row-$col", shift(@$ref));
            $params->param("value$chart-$row-$col", shift(@$ref));
            if ($debug) {
                print qq{<p>$params->param("field$chart-$row-$col") | $params->param("type$chart-$row-$col") | $params->param("value$chart-$row-$col")*</p>\n};
            }
            $col++;

        }
        $row++;
    }


# A boolean chart is a way of representing the terms in a logical
# expression.  Bugzilla builds SQL queries depending on how you enter
# terms into the boolean chart. Boolean charts are represented in
# urls as tree-tuples of (chart id, row, column). The query form
# (query.cgi) may contain an arbitrary number of boolean charts where
# each chart represents a clause in a SQL query.
#
# The query form starts out with one boolean chart containing one
# row and one column.  Extra rows can be created by pressing the
# AND button at the bottom of the chart.  Extra columns are created
# by pressing the OR button at the right end of the chart. Extra
# charts are created by pressing "Add another boolean chart".
#
# Each chart consists of an arbitrary number of rows and columns.
# The terms within a row are ORed together. The expressions represented
# by each row are ANDed together. The expressions represented by each
# chart are ANDed together.
#
#        ----------------------
#        | col2 | col2 | col3 |
# --------------|------|------|
# | row1 |  a1  |  a2  |      |
# |------|------|------|------|  => ((a1 OR a2) AND (b1 OR b2 OR b3) AND (c1))
# | row2 |  b1  |  b2  |  b3  |
# |------|------|------|------|
# | row3 |  c1  |      |      |
# -----------------------------
#
#        --------
#        | col2 |
# --------------|
# | row1 |  d1  | => (d1)
# ---------------
#
# Together, these two charts represent a SQL expression like this
# SELECT blah FROM blah WHERE ( (a1 OR a2)AND(b1 OR b2 OR b3)AND(c1)) AND (d1)
#
# The terms within a single row of a boolean chart are all constraints
# on a single piece of data.  If you're looking for a bug that has two
# different people cc'd on it, then you need to use two boolean charts.
# This will find bugs with one CC matching 'foo@blah.org' and and another
# CC matching 'bar@blah.org'.
#
# --------------------------------------------------------------
# CC    | equal to
# foo@blah.org
# --------------------------------------------------------------
# CC    | equal to
# bar@blah.org
#
# If you try to do this query by pressing the AND button in the
# original boolean chart then what you'll get is an expression that
# looks for a single CC where the login name is both "foo@blah.org",
# and "bar@blah.org". This is impossible.
#
# --------------------------------------------------------------
# CC    | equal to
# foo@blah.org
# AND
# CC    | equal to
# bar@blah.org
# --------------------------------------------------------------

# $chartid is the number of the current chart whose SQL we're constructing
# $row is the current row of the current chart

# names for table aliases are constructed using $chartid and $row
#   SELECT blah  FROM $table "$table_$chartid_$row" WHERE ....

# $f  = field of table in bug db (e.g. bug_id, reporter, etc)
# $ff = qualified field name (field name prefixed by table)
#       e.g. bugs_activity.bug_id
# $t  = type of query. e.g. "equal to", "changed after", case sensitive substr"
# $v  = value - value the user typed in to the form
# $q  = sanitized version of user input (SqlQuote($v))
# @supptables = Tables and/or table aliases used in query
# %suppseen   = A hash used to store all the tables in supptables to weed
#               out duplicates.
# @supplist   = A list used to accumulate all the JOIN clauses for each
#               chart to merge the ON sections of each.
# $suppstring = String which is pasted into query containing all table names

    # get a list of field names to verify the user-submitted chart fields against
    &::SendSQL("SELECT name, fieldid FROM fielddefs");
    while (&::MoreSQLData()) {
        my ($name, $id) = &::FetchSQLData();
        $chartfields{$name} = $id;
    }

    $row = 0;
    for ($chart=-1 ;
         $chart < 0 || $params->param("field$chart-0-0") ;
         $chart++) {
        $chartid = $chart >= 0 ? $chart : "";
        my @chartandlist = ();
        for ($row = 0 ;
             $params->param("field$chart-$row-0") ;
             $row++) {
            my @orlist;
            for (my $col = 0 ;
                 $params->param("field$chart-$row-$col") ;
                 $col++) {
                $f = $params->param("field$chart-$row-$col") || "noop";
                $t = $params->param("type$chart-$row-$col") || "noop";
                $v = $params->param("value$chart-$row-$col");
                $v = "" if !defined $v;
                $v = trim($v);
                if ($f eq "noop" || $t eq "noop" || $v eq "") {
                    next;
                }
                # chart -1 is generated by other code above, not from the user-
                # submitted form, so we'll blindly accept any values in chart -1
                if ((!$chartfields{$f}) && ($chart != -1)) {
                    ThrowCodeError("invalid_field_name", {field => $f});
                }

                # This is either from the internal chart (in which case we
                # already know about it), or it was in %chartfields, so it is
                # a valid field name, which means that it's ok.
                trick_taint($f);
                $q = &::SqlQuote($v);
                my $rhs = $v;
                $rhs =~ tr/,//;
                my $func;
                $term = undef;
                foreach my $key (@funcnames) {
                    if ("$f,$t,$rhs" =~ m/$key/) {
                        my $ref = $funcsbykey{$key};
                        if ($debug) {
                            print "<p>$key ($f , $t , $rhs ) => ";
                        }
                        $ff = $f;
                        if ($f !~ /\./) {
                            $ff = "bugs.$f";
                        }
                        &$ref;
                        if ($debug) {
                            print "$f , $t , $v , $term</p>";
                        }
                        if ($term) {
                            last;
                        }
                    }
                }
                if ($term) {
                    push(@orlist, $term);
                }
                else {
                    # This field and this type don't work together.
                    ThrowCodeError("field_type_mismatch",
                                   { field => $params->param("field$chart-$row-$col"),
                                     type => $params->param("type$chart-$row-$col"),
                                   });
                }
            }
            if (@orlist) {
                @orlist = map("($_)", @orlist) if (scalar(@orlist) > 1);
                push(@chartandlist, "(" . join(" OR ", @orlist) . ")");
            }
        }
        if (@chartandlist) {
            if ($params->param("negate$chart")) {
                push(@andlist, "NOT(" . join(" AND ", @chartandlist) . ")");
            } else {
                push(@andlist, "(" . join(" AND ", @chartandlist) . ")");
            }
        }
    }

    # The ORDER BY clause goes last, but can require modifications
    # to other parts of the query, so we want to create it before we
    # write the FROM clause.
    foreach my $orderitem (@inputorder) {
        # Some fields have 'AS' aliases. The aliases go in the ORDER BY,
        # not the whole fields.
        # XXX - Ideally, we would get just the aliases in @inputorder,
        # and we'd never have to deal with this.
        if ($orderitem =~ /\s+AS\s+(.+)$/i) {
            $orderitem = $1;
        }
        BuildOrderBy($orderitem, \@orderby);
    }
    # Now JOIN the correct tables in the FROM clause.
    # This is done separately from the above because it's
    # cleaner to do it this way.
    foreach my $orderitem (@inputorder) {
        # Grab the part without ASC or DESC.
        my @splitfield = split(/\s+/, $orderitem);
        if ($specialorderjoin{$splitfield[0]}) {
            push(@supptables, $specialorderjoin{$splitfield[0]});
        }
    }

    my %suppseen = ("bugs" => 1);
    my $suppstring = "bugs";
    my @supplist = (" ");
    foreach my $str (@supptables) {
        if (!$suppseen{$str}) {
            if ($str =~ /^(LEFT|INNER|RIGHT)\s+JOIN/i) {
                $str =~ /^(.*?)\s+ON\s+(.*)$/i;
                my ($leftside, $rightside) = ($1, $2);
                if ($suppseen{$leftside}) {
                    $supplist[$suppseen{$leftside}] .= " AND ($rightside)";
                } else {
                    $suppseen{$leftside} = scalar @supplist;
                    push @supplist, " $leftside ON ($rightside)";
                }
            } else {
                # Do not accept implicit joins using comma operator
                # as they are not DB agnostic
                ThrowCodeError("comma_operator_deprecated");
            }
        }
    }
    $suppstring .= join('', @supplist);
    
    # Make sure we create a legal SQL query.
    @andlist = ("1 = 1") if !@andlist;

    my $query = "SELECT " . join(', ', @fields) .
                " FROM $suppstring" .
                " LEFT JOIN bug_group_map " .
                " ON bug_group_map.bug_id = bugs.bug_id ";

    if ($user->id) {
        if (%{$user->groups}) {
            $query .= " AND bug_group_map.group_id NOT IN (" . join(',', values(%{$user->groups})) . ") ";
        }

        $query .= " LEFT JOIN cc ON cc.bug_id = bugs.bug_id AND cc.who = " . $user->id;
    }

    $query .= " WHERE " . join(' AND ', (@wherepart, @andlist)) .
              " AND bugs.creation_ts IS NOT NULL AND ((bug_group_map.group_id IS NULL)";

    if ($user->id) {
        my $userid = $user->id;
        $query .= "    OR (bugs.reporter_accessible = 1 AND bugs.reporter = $userid) " .
              "    OR (bugs.cclist_accessible = 1 AND cc.who IS NOT NULL) " .
              "    OR (bugs.assigned_to = $userid) ";
        if (Param('useqacontact')) {
            $query .= "OR (bugs.qa_contact = $userid) ";
        }
    }

    foreach my $field (@fields, @orderby) {
        next if ($field =~ /(AVG|SUM|COUNT|MAX|MIN|VARIANCE)\s*\(/i ||
                 $field =~ /^\d+$/ || $field eq "bugs.bug_id" ||
                 $field =~ /^relevance/);
        if ($field =~ /.*AS\s+(\w+)$/i) {
            push(@groupby, $1) if !grep($_ eq $1, @groupby);
        } else {
            push(@groupby, $field) if !grep($_ eq $field, @groupby);
        }
    }
    $query .= ") " . $dbh->sql_group_by("bugs.bug_id", join(', ', @groupby));


    if (@having) {
        $query .= " HAVING " . join(" AND ", @having);
    }

    if (@orderby) {
        $query .= " ORDER BY " . join(',', @orderby);
    }

    if ($debug) {
        print "<p><code>" . value_quote($query) . "</code></p>\n";
        exit;
    }
    
    $self->{'sql'} = $query;
}

###############################################################################
# Helper functions for the init() method.
###############################################################################
sub SqlifyDate {
    my ($str) = @_;
    $str = "" if !defined $str;
    if ($str eq "") {
        my ($sec, $min, $hour, $mday, $month, $year, $wday) = localtime(time());
        return sprintf("%4d-%02d-%02d 00:00:00", $year+1900, $month+1, $mday);
    }


    if ($str =~ /^(-|\+)?(\d+)([hHdDwWmMyY])$/) {   # relative date
        my ($sign, $amount, $unit, $date) = ($1, $2, lc $3, time);
        my ($sec, $min, $hour, $mday, $month, $year, $wday)  = localtime($date);
        if ($sign && $sign eq '+') { $amount = -$amount; }
        if ($unit eq 'w') {                  # convert weeks to days
            $amount = 7*$amount + $wday;
            $unit = 'd';
        }
        if ($unit eq 'd') {
            $date -= $sec + 60*$min + 3600*$hour + 24*3600*$amount;
            return time2str("%Y-%m-%d %H:%M:%S", $date);
        }
        elsif ($unit eq 'y') {
            return sprintf("%4d-01-01 00:00:00", $year+1900-$amount);
        }
        elsif ($unit eq 'm') {
            $month -= $amount;
            while ($month<0) { $year--; $month += 12; }
            return sprintf("%4d-%02d-01 00:00:00", $year+1900, $month+1);
        }
        elsif ($unit eq 'h') {
            # Special case 0h for 'beginning of this hour'
            if ($amount == 0) {
                $date -= $sec + 60*$min;
            } else {
                $date -= 3600*$amount;
            }
            return time2str("%Y-%m-%d %H:%M:%S", $date);
        }
        return undef;                      # should not happen due to regexp at top
    }
    my $date = str2time($str);
    if (!defined($date)) {
        ThrowUserError("illegal_date", { date => $str });
    }
    return time2str("%Y-%m-%d %H:%M:%S", $date);
}

# ListIDsForEmail returns a string with a comma-joined list
# of userids matching email addresses
# according to the type specified.
# Currently, this only supports regexp, exact, anyexact, and substring matches.
# Matches will return up to 50 matching userids
# If a match type is unsupported or returns too many matches,
# ListIDsForEmail returns an undef.
sub ListIDsForEmail {
    my ($self, $type, $email) = (@_);
    my $old = $self->{"emailcache"}{"$type,$email"};
    return undef if ($old && $old eq "---");
    return $old if $old;
    
    my $dbh = Bugzilla->dbh;
    my @list = ();
    my $list = "---";
    if ($type eq 'anyexact') {
        foreach my $w (split(/,/, $email)) {
            $w = trim($w);
            my $id = login_to_id($w);
            if ($id > 0) {
                push(@list,$id)
            }
        }
        $list = join(',', @list);
    } elsif ($type eq 'substring') {
        &::SendSQL("SELECT userid FROM profiles WHERE " .
            $dbh->sql_position(lc(::SqlQuote($email)), "LOWER(login_name)") .
            " > 0 " . $dbh->sql_limit(51));
        while (&::MoreSQLData()) {
            my ($id) = &::FetchSQLData();
            push(@list, $id);
        }
        if (scalar(@list) < 50) {
            $list = join(',', @list);
        }
    } elsif ($type eq 'regexp') {
        &::SendSQL("SELECT userid FROM profiles WHERE " .
            "login_name " . $dbh->sql_regexp() . ::SqlQuote($email) .
            " " . $dbh->sql_limit(51));
        while (&::MoreSQLData()) {
            my ($id) = &::FetchSQLData();
            push(@list, $id);
        }
        if (scalar(@list) < 50) {
            $list = join(',', @list);
        }
    }
    $self->{"emailcache"}{"$type,$email"} = $list;
    return undef if ($list eq "---");
    return $list;
}

sub build_subselect {
    my ($outer, $inner, $table, $cond) = @_;
    my $q = "SELECT $inner FROM $table WHERE $cond";
    #return "$outer IN ($q)";
    &::SendSQL($q);
    my @list;
    while (&::MoreSQLData()) {
        push (@list, &::FetchOneColumn());
    }
    return "1=2" unless @list; # Could use boolean type on dbs which support it
    return "$outer IN (" . join(',', @list) . ")";
}

sub GetByWordList {
    my ($field, $strs) = (@_);
    my @list;
    my $dbh = Bugzilla->dbh;

    foreach my $w (split(/[\s,]+/, $strs)) {
        my $word = $w;
        if ($word ne "") {
            $word =~ tr/A-Z/a-z/;
            $word = &::SqlQuote(quotemeta($word));
            $word =~ s/^'//;
            $word =~ s/'$//;
            $word = '(^|[^a-z0-9])' . $word . '($|[^a-z0-9])';
            push(@list, "$field " . $dbh->sql_regexp() . " '$word'");
        }
    }

    return \@list;
}

# Support for "any/all/nowordssubstr" comparison type ("words as substrings")
sub GetByWordListSubstr {
    my ($field, $strs) = (@_);
    my @list;
    my $dbh = Bugzilla->dbh;

    foreach my $word (split(/[\s,]+/, $strs)) {
        if ($word ne "") {
            push(@list, $dbh->sql_position(lc(::SqlQuote($word)),
                                           "LOWER($field)") . " > 0");
        }
    }

    return \@list;
}

sub getSQL {
    my $self = shift;
    return $self->{'sql'};
}

sub pronoun {
    my ($noun, $user) = (@_);
    if ($noun eq "%user%") {
        if ($user->id) {
            return $user->id;
        } else {
            ThrowUserError('login_required_for_pronoun');
        }
    }
    if ($noun eq "%reporter%") {
        return "bugs.reporter";
    }
    if ($noun eq "%assignee%") {
        return "bugs.assigned_to";
    }
    if ($noun eq "%qacontact%") {
        return "bugs.qa_contact";
    }
    return 0;
}

# Validate that the query type is one we can deal with
sub IsValidQueryType
{
    my ($queryType) = @_;
    if (grep { $_ eq $queryType } qw(specific advanced)) {
        return 1;
    }
    return 0;
}

# BuildOrderBy - Private Subroutine
# This function converts the input order to an "output" order,
# suitable for concatenation to form an ORDER BY clause. Basically,
# it just handles fields that have non-standard sort orders from
# %specialorder.
# Arguments:
#  $orderitem - A string. The next value to append to the ORDER BY clause,
#      in the format of an item in the 'order' parameter to
#      Bugzilla::Search.
#  $stringlist - A reference to the list of strings that will be join()'ed
#      to make ORDER BY. This is what the subroutine modifies.
#  $reverseorder - (Optional) A boolean. TRUE if we should reverse the order
#      of the field that we are given (from ASC to DESC or vice-versa).
#
# Explanation of $reverseorder
# ----------------------------
# The role of $reverseorder is to handle things like sorting by
# "target_milestone DESC".
# Let's say that we had a field "A" that normally translates to a sort 
# order of "B ASC, C DESC". If we sort by "A DESC", what we really then
# mean is "B DESC, C ASC". So $reverseorder is only used if we call 
# BuildOrderBy recursively, to let it know that we're "reversing" the 
# order. That is, that we wanted "A DESC", not "A".
sub BuildOrderBy {
    my ($orderitem, $stringlist, $reverseorder) = (@_);

    my @twopart = split(/\s+/, $orderitem);
    my $orderfield = $twopart[0];
    my $orderdirection = $twopart[1] || "";

    if ($reverseorder) {
        # If orderdirection is empty or ASC...
        if (!$orderdirection || $orderdirection =~ m/asc/i) {
            $orderdirection = "DESC";
        } else {
            # This has the minor side-effect of making any reversed invalid
            # direction into ASC.
            $orderdirection = "ASC";
        }
    }

    # Handle fields that have non-standard sort orders, from $specialorder.
    if ($specialorder{$orderfield}) {
        foreach my $subitem (@{$specialorder{$orderfield}}) {
            # DESC on a field with non-standard sort order means
            # "reverse the normal order for each field that we map to."
            BuildOrderBy($subitem, $stringlist, $orderdirection =~ m/desc/i);
        }
        return;
    }

    push(@$stringlist, $orderfield . ' ' . $orderdirection);
}
1;