1 package C4::HoldsQueue;
3 # Copyright 2011 Catalyst IT
5 # This file is part of Koha.
7 # Koha is free software; you can redistribute it and/or modify it under the
8 # terms of the GNU General Public License as published by the Free Software
9 # Foundation; either version 2 of the License, or (at your option) any later
12 # Koha is distributed in the hope that it will be useful, but WITHOUT ANY
13 # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
14 # A PARTICULAR PURPOSE. See the GNU General Public License for more details.
16 # You should have received a copy of the GNU General Public License along
17 # with Koha; if not, write to the Free Software Foundation, Inc.,
18 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20 # FIXME: expand perldoc, explain intended logic
32 use C4::Dates qw/format_date/;
34 use List::Util qw(shuffle);
37 use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);
47 &UpdateTransportCostMatrix
54 =head2 TransportCostMatrix
56 TransportCostMatrix();
58 Returns Transport Cost Matrix as a hashref <to branch code> => <from branch code> => cost
62 sub TransportCostMatrix {
63 my $dbh = C4::Context->dbh;
64 my $transport_costs = $dbh->selectall_arrayref("SELECT * FROM transport_cost",{ Slice => {} });
66 my %transport_cost_matrix;
67 foreach (@$transport_costs) {
68 my $from = $_->{frombranch};
69 my $to = $_->{tobranch};
70 my $cost = $_->{cost};
71 my $disabled = $_->{disable_transfer};
72 $transport_cost_matrix{$to}{$from} = { cost => $cost, disable_transfer => $disabled };
74 return \%transport_cost_matrix;
77 =head2 UpdateTransportCostMatrix
79 UpdateTransportCostMatrix($records);
81 Updates full Transport Cost Matrix table. $records is an arrayref of records.
82 Records: { frombranch => <code>, tobranch => <code>, cost => <figure>, disable_transfer => <0,1> }
86 sub UpdateTransportCostMatrix {
88 my $dbh = C4::Context->dbh;
90 my $sth = $dbh->prepare("INSERT INTO transport_cost (frombranch, tobranch, cost, disable_transfer) VALUES (?, ?, ?, ?)");
92 $dbh->do("TRUNCATE TABLE transport_cost");
94 my $cost = $_->{cost};
95 my $from = $_->{frombranch};
96 my $to = $_->{tobranch};
97 if ($_->{disable_transfer}) {
100 elsif ( !defined ($cost) || ($cost !~ m/(0|[1-9][0-9]*)(\.[0-9]*)?/o) ) {
101 warn "Invalid $from -> $to cost $cost - must be a number >= 0, disablig";
103 $_->{disable_transfer} = 1;
105 $sth->execute( $from, $to, $cost, $_->{disable_transfer} ? 1 : 0 );
109 =head2 GetHoldsQueueItems
111 GetHoldsQueueItems($branch);
113 Returns hold queue for a holding branch. If branch is omitted, then whole queue is returned
117 sub GetHoldsQueueItems {
118 my ($branchlimit) = @_;
119 my $dbh = C4::Context->dbh;
121 my @bind_params = ();
122 my $query = q/SELECT tmp_holdsqueue.*, biblio.author, items.ccode, items.location, items.enumchron, items.cn_sort, biblioitems.publishercode,biblio.copyrightdate,biblioitems.publicationyear,biblioitems.pages,biblioitems.size,biblioitems.publicationyear,biblioitems.isbn,items.copynumber
124 JOIN biblio USING (biblionumber)
125 LEFT JOIN biblioitems USING (biblionumber)
126 LEFT JOIN items USING ( itemnumber)
129 $query .=" WHERE tmp_holdsqueue.holdingbranch = ?";
130 push @bind_params, $branchlimit;
132 $query .= " ORDER BY ccode, location, cn_sort, author, title, pickbranch, reservedate";
133 my $sth = $dbh->prepare($query);
134 $sth->execute(@bind_params);
136 while ( my $row = $sth->fetchrow_hashref ){
137 $row->{reservedate} = format_date($row->{reservedate});
138 my $record = GetMarcBiblio($row->{biblionumber});
140 $row->{subtitle} = GetRecordValue('subtitle',$record,'')->[0]->{subfield};
141 $row->{parts} = GetRecordValue('parts',$record,'')->[0]->{subfield};
142 $row->{numbers} = GetRecordValue('numbers',$record,'')->[0]->{subfield};
153 Top level function that turns reserves into tmp_holdsqueue and hold_fill_targets.
158 my $dbh = C4::Context->dbh;
160 $dbh->do("DELETE FROM tmp_holdsqueue"); # clear the old table for new info
161 $dbh->do("DELETE FROM hold_fill_targets");
164 my $total_requests = 0;
165 my $total_available_items = 0;
166 my $num_items_mapped = 0;
169 my $transport_cost_matrix;
170 my $use_transport_cost_matrix = C4::Context->preference("UseTransportCostMatrix");
171 if ($use_transport_cost_matrix) {
172 $transport_cost_matrix = TransportCostMatrix();
173 unless (keys %$transport_cost_matrix) {
174 warn "UseTransportCostMatrix set to yes, but matrix not populated";
175 undef $transport_cost_matrix;
178 unless ($transport_cost_matrix) {
179 $branches_to_use = load_branches_to_pull_from();
182 my $bibs_with_pending_requests = GetBibsWithPendingHoldRequests();
184 foreach my $biblionumber (@$bibs_with_pending_requests) {
186 my $hold_requests = GetPendingHoldRequestsForBib($biblionumber);
187 my $available_items = GetItemsAvailableToFillHoldRequestsForBib($biblionumber, $branches_to_use);
188 $total_requests += scalar(@$hold_requests);
189 $total_available_items += scalar(@$available_items);
191 my $item_map = MapItemsToHoldRequests($hold_requests, $available_items, $branches_to_use, $transport_cost_matrix);
193 my $item_map_size = scalar(keys %$item_map)
196 $num_items_mapped += $item_map_size;
197 CreatePicklistFromItemMap($item_map);
198 AddToHoldTargetMap($item_map);
199 if (($item_map_size < scalar(@$hold_requests )) and
200 ($item_map_size < scalar(@$available_items))) {
201 # DOUBLE CHECK, but this is probably OK - unfilled item-level requests
203 #warn "unfilled requests for $biblionumber";
204 #warn Dumper($hold_requests), Dumper($available_items), Dumper($item_map);
209 =head2 GetBibsWithPendingHoldRequests
211 my $biblionumber_aref = GetBibsWithPendingHoldRequests();
213 Return an arrayref of the biblionumbers of all bibs
214 that have one or more unfilled hold requests.
218 sub GetBibsWithPendingHoldRequests {
219 my $dbh = C4::Context->dbh;
221 my $bib_query = "SELECT DISTINCT biblionumber
225 AND reservedate <= CURRENT_DATE()
228 my $sth = $dbh->prepare($bib_query);
231 my $biblionumbers = $sth->fetchall_arrayref();
233 return [ map { $_->[0] } @$biblionumbers ];
236 =head2 GetPendingHoldRequestsForBib
238 my $requests = GetPendingHoldRequestsForBib($biblionumber);
240 Returns an arrayref of hashrefs to pending, unfilled hold requests
241 on the bib identified by $biblionumber. The following keys
242 are present in each hashref:
253 The arrayref is sorted in order of increasing priority.
257 sub GetPendingHoldRequestsForBib {
258 my $biblionumber = shift;
260 my $dbh = C4::Context->dbh;
262 my $request_query = "SELECT biblionumber, borrowernumber, itemnumber, priority, reserves.branchcode,
263 reservedate, reservenotes, borrowers.branchcode AS borrowerbranch
265 JOIN borrowers USING (borrowernumber)
266 WHERE biblionumber = ?
269 AND reservedate <= CURRENT_DATE()
272 my $sth = $dbh->prepare($request_query);
273 $sth->execute($biblionumber);
275 my $requests = $sth->fetchall_arrayref({});
280 =head2 GetItemsAvailableToFillHoldRequestsForBib
282 my $available_items = GetItemsAvailableToFillHoldRequestsForBib($biblionumber, $branches_ar);
284 Returns an arrayref of items available to fill hold requests
285 for the bib identified by C<$biblionumber>. An item is available
286 to fill a hold request if and only if:
289 * it is not withdrawn
290 * it is not marked notforloan
291 * it is not currently in transit
293 * it is not sitting on the hold shelf
297 sub GetItemsAvailableToFillHoldRequestsForBib {
298 my ($biblionumber, $branches_to_use) = @_;
300 my $dbh = C4::Context->dbh;
301 my $items_query = "SELECT itemnumber, homebranch, holdingbranch, itemtypes.itemtype AS itype
304 if (C4::Context->preference('item-level_itypes')) {
305 $items_query .= "LEFT JOIN itemtypes ON (itemtypes.itemtype = items.itype) ";
307 $items_query .= "JOIN biblioitems USING (biblioitemnumber)
308 LEFT JOIN itemtypes USING (itemtype) ";
310 $items_query .= "WHERE items.notforloan = 0
311 AND holdingbranch IS NOT NULL
314 $items_query .= " AND damaged = 0" unless C4::Context->preference('AllowHoldsOnDamagedItems');
315 $items_query .= " AND items.onloan IS NULL
316 AND (itemtypes.notforloan IS NULL OR itemtypes.notforloan = 0)
317 AND itemnumber NOT IN (
320 WHERE biblionumber = ?
321 AND itemnumber IS NOT NULL
322 AND (found IS NOT NULL OR priority = 0)
324 AND items.biblionumber = ?";
325 $items_query .= " AND damaged = 0 "
326 unless C4::Context->preference('AllowHoldsOnDamagedItems');
328 my @params = ($biblionumber, $biblionumber);
329 if ($branches_to_use && @$branches_to_use) {
330 $items_query .= " AND holdingbranch IN (" . join (",", map { "?" } @$branches_to_use) . ")";
331 push @params, @$branches_to_use;
333 my $sth = $dbh->prepare($items_query);
334 $sth->execute(@params);
336 my $itm = $sth->fetchall_arrayref({});
337 my @items = grep { ! scalar GetTransfers($_->{itemnumber}) } @$itm;
339 my $rule = GetBranchItemRule($_->{homebranch}, $_->{itype});
340 $_->{holdallowed} = $rule->{holdallowed} != 0
344 =head2 MapItemsToHoldRequests
346 MapItemsToHoldRequests($hold_requests, $available_items, $branches, $transport_cost_matrix)
350 sub MapItemsToHoldRequests {
351 my ($hold_requests, $available_items, $branches_to_use, $transport_cost_matrix) = @_;
353 # handle trival cases
354 return unless scalar(@$hold_requests) > 0;
355 return unless scalar(@$available_items) > 0;
357 my $automatic_return = C4::Context->preference("AutomaticItemReturn");
359 # identify item-level requests
360 my %specific_items_requested = map { $_->{itemnumber} => 1 }
361 grep { defined($_->{itemnumber}) }
364 # group available items by itemnumber
365 my %items_by_itemnumber = map { $_->{itemnumber} => $_ } @$available_items;
367 # items already allocated
368 my %allocated_items = ();
370 # map of items to hold requests
373 # figure out which item-level requests can be filled
374 my $num_items_remaining = scalar(@$available_items);
375 foreach my $request (@$hold_requests) {
376 last if $num_items_remaining == 0;
378 # is this an item-level request?
379 if (defined($request->{itemnumber})) {
380 # fill it if possible; if not skip it
381 if (exists $items_by_itemnumber{$request->{itemnumber}} and
382 not exists $allocated_items{$request->{itemnumber}}) {
383 $item_map{$request->{itemnumber}} = {
384 borrowernumber => $request->{borrowernumber},
385 biblionumber => $request->{biblionumber},
386 holdingbranch => $items_by_itemnumber{$request->{itemnumber}}->{holdingbranch},
387 pickup_branch => $request->{branchcode} || $request->{borrowerbranch},
389 reservedate => $request->{reservedate},
390 reservenotes => $request->{reservenotes},
392 $allocated_items{$request->{itemnumber}}++;
393 $num_items_remaining--;
396 # it's title-level request that will take up one item
397 $num_items_remaining--;
401 # group available items by branch
402 my %items_by_branch = ();
403 foreach my $item (@$available_items) {
404 next unless $item->{holdallowed};
406 push @{ $items_by_branch{ $item->{holdingbranch} } }, $item
407 unless exists $allocated_items{ $item->{itemnumber} };
409 return unless keys %items_by_branch;
411 # now handle the title-level requests
412 $num_items_remaining = scalar(@$available_items) - scalar(keys %allocated_items);
414 foreach my $request (@$hold_requests) {
415 last if $num_items_remaining == 0;
416 next if defined($request->{itemnumber}); # already handled these
418 # look for local match first
419 my $pickup_branch = $request->{branchcode} || $request->{borrowerbranch};
420 my ($itemnumber, $holdingbranch);
422 my $holding_branch_items = $automatic_return ? undef : $items_by_branch{$pickup_branch};
423 if ( $holding_branch_items ) {
424 foreach my $item (@$holding_branch_items) {
425 if ( $request->{borrowerbranch} eq $item->{homebranch} ) {
426 $itemnumber = $item->{itemnumber};
430 $holdingbranch = $pickup_branch;
431 $itemnumber ||= $holding_branch_items->[0]->{itemnumber};
433 elsif ($transport_cost_matrix) {
434 $pull_branches = [keys %items_by_branch];
435 $holdingbranch = least_cost_branch( $pickup_branch, $pull_branches, $transport_cost_matrix );
436 if ( $holdingbranch ) {
438 my $holding_branch_items = $items_by_branch{$holdingbranch};
439 foreach my $item (@$holding_branch_items) {
440 next if $request->{borrowerbranch} ne $item->{homebranch};
442 $itemnumber = $item->{itemnumber};
445 $itemnumber ||= $holding_branch_items->[0]->{itemnumber};
448 warn "No transport costs for $pickup_branch";
452 unless ($itemnumber) {
453 # not found yet, fall back to basics
454 if ($branches_to_use) {
455 $pull_branches = $branches_to_use;
457 $pull_branches = [keys %items_by_branch];
460 foreach my $branch (@$pull_branches) {
461 my $holding_branch_items = $items_by_branch{$branch}
464 $holdingbranch ||= $branch;
465 foreach my $item (@$holding_branch_items) {
466 next if $pickup_branch ne $item->{homebranch};
468 $itemnumber = $item->{itemnumber};
469 $holdingbranch = $branch;
473 $itemnumber ||= $items_by_branch{$holdingbranch}->[0]->{itemnumber}
478 my $holding_branch_items = $items_by_branch{$holdingbranch}
479 or die "Have $itemnumber, $holdingbranch, but no items!";
480 @$holding_branch_items = grep { $_->{itemnumber} != $itemnumber } @$holding_branch_items;
481 delete $items_by_branch{$holdingbranch} unless @$holding_branch_items;
483 $item_map{$itemnumber} = {
484 borrowernumber => $request->{borrowernumber},
485 biblionumber => $request->{biblionumber},
486 holdingbranch => $holdingbranch,
487 pickup_branch => $pickup_branch,
489 reservedate => $request->{reservedate},
490 reservenotes => $request->{reservenotes},
492 $num_items_remaining--;
498 =head2 CreatePickListFromItemMap
502 sub CreatePicklistFromItemMap {
503 my $item_map = shift;
505 my $dbh = C4::Context->dbh;
507 my $sth_load=$dbh->prepare("
508 INSERT INTO tmp_holdsqueue (biblionumber,itemnumber,barcode,surname,firstname,phone,borrowernumber,
509 cardnumber,reservedate,title, itemcallnumber,
510 holdingbranch,pickbranch,notes, item_level_request)
511 VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
514 foreach my $itemnumber (sort keys %$item_map) {
515 my $mapped_item = $item_map->{$itemnumber};
516 my $biblionumber = $mapped_item->{biblionumber};
517 my $borrowernumber = $mapped_item->{borrowernumber};
518 my $pickbranch = $mapped_item->{pickup_branch};
519 my $holdingbranch = $mapped_item->{holdingbranch};
520 my $reservedate = $mapped_item->{reservedate};
521 my $reservenotes = $mapped_item->{reservenotes};
522 my $item_level = $mapped_item->{item_level};
524 my $item = GetItem($itemnumber);
525 my $barcode = $item->{barcode};
526 my $itemcallnumber = $item->{itemcallnumber};
528 my $borrower = GetMember('borrowernumber'=>$borrowernumber);
529 my $cardnumber = $borrower->{'cardnumber'};
530 my $surname = $borrower->{'surname'};
531 my $firstname = $borrower->{'firstname'};
532 my $phone = $borrower->{'phone'};
534 my $bib = GetBiblioData($biblionumber);
535 my $title = $bib->{title};
537 $sth_load->execute($biblionumber, $itemnumber, $barcode, $surname, $firstname, $phone, $borrowernumber,
538 $cardnumber, $reservedate, $title, $itemcallnumber,
539 $holdingbranch, $pickbranch, $reservenotes, $item_level);
543 =head2 AddToHoldTargetMap
547 sub AddToHoldTargetMap {
548 my $item_map = shift;
550 my $dbh = C4::Context->dbh;
553 INSERT INTO hold_fill_targets (borrowernumber, biblionumber, itemnumber, source_branchcode, item_level_request)
554 VALUES (?, ?, ?, ?, ?)
556 my $sth_insert = $dbh->prepare($insert_sql);
558 foreach my $itemnumber (keys %$item_map) {
559 my $mapped_item = $item_map->{$itemnumber};
560 $sth_insert->execute($mapped_item->{borrowernumber}, $mapped_item->{biblionumber}, $itemnumber,
561 $mapped_item->{holdingbranch}, $mapped_item->{item_level});
565 # Helper functions, not part of any interface
568 return $_[0] unless $_[0];
574 sub load_branches_to_pull_from {
575 my $static_branch_list = C4::Context->preference("StaticHoldsQueueWeight")
578 my @branches_to_use = map _trim($_), split /,/, $static_branch_list;
580 @branches_to_use = shuffle(@branches_to_use) if C4::Context->preference("RandomizeHoldsQueueWeight");
582 return \@branches_to_use;
585 sub least_cost_branch {
588 my ($to, $from, $transport_cost_matrix) = @_;
590 # Nothing really spectacular: supply to branch, a list of potential from branches
591 # and find the minimum from - to value from the transport_cost_matrix
592 return $from->[0] if @$from == 1;
594 my ($least_cost, @branch);
596 my $cell = $transport_cost_matrix->{$to}{$_};
597 next if $cell->{disable_transfer};
599 my $cost = $cell->{cost};
600 next unless defined $cost; # XXX should this be reported?
602 unless (defined $least_cost) {
608 next if $cost > $least_cost;
610 if ($cost == $least_cost) {
621 # XXX return a random @branch with minimum cost instead of the first one;
622 # return $branch[0] if @branch == 1;