C4/Items.pm

   1 package C4::Items;
   2
   3 # Copyright 2007 LibLime, Inc.
   4 #
   5 # This file is part of Koha.
   6 #
   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
  10 # version.
  11 #
  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.
  15 #
  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.
  19
  20 use strict;
  21 #use warnings; FIXME - Bug 2505
  22
  23 use Carp;
  24 use C4::Context;
  25 use C4::Koha;
  26 use C4::Biblio;
  27 use C4::Dates qw/format_date format_date_in_iso/;
  28 use MARC::Record;
  29 use C4::ClassSource;
  30 use C4::Log;
  31 use C4::Branch;
  32 require C4::Reserves;
  33 use C4::Charset;
  34 use C4::Acquisition;
  35
  36 use vars qw($VERSION @ISA @EXPORT);
  37
  38 BEGIN {
  39     $VERSION = 3.01;
  40
  41         require Exporter;
  42     @ISA = qw( Exporter );
  43
  44     # function exports
  45     @EXPORT = qw(
  46         GetItem
  47         AddItemFromMarc
  48         AddItem
  49         AddItemBatchFromMarc
  50         ModItemFromMarc
  51                 Item2Marc
  52         ModItem
  53         ModDateLastSeen
  54         ModItemTransfer
  55         DelItem
  56
  57         CheckItemPreSave
  58
  59         GetItemStatus
  60         GetItemLocation
  61         GetLostItems
  62         GetItemsForInventory
  63         GetItemsCount
  64         GetItemInfosOf
  65         GetItemsByBiblioitemnumber
  66         GetItemsInfo
  67         get_itemnumbers_of
  68         GetItemnumberFromBarcode
  69         GetBarcodeFromItemnumber
  70
  71                 DelItemCheck
  72                 MoveItemFromBiblio
  73                 GetLatestAcquisitions
  74         CartToShelf
  75     );
  76 }
  77
  78 =head1 NAME
  79
  80 C4::Items - item management functions
  81
  82 =head1 DESCRIPTION
  83
  84 This module contains an API for manipulating item
  85 records in Koha, and is used by cataloguing, circulation,
  86 acquisitions, and serials management.
  87
  88 A Koha item record is stored in two places: the
  89 items table and embedded in a MARC tag in the XML
  90 version of the associated bib record in C<biblioitems.marcxml>.
  91 This is done to allow the item information to be readily
  92 indexed (e.g., by Zebra), but means that each item
  93 modification transaction must keep the items table
  94 and the MARC XML in sync at all times.
  95
  96 Consequently, all code that creates, modifies, or deletes
  97 item records B<must> use an appropriate function from
  98 C<C4::Items>.  If no existing function is suitable, it is
  99 better to add one to C<C4::Items> than to use add
 100 one-off SQL statements to add or modify items.
 101
 102 The items table will be considered authoritative.  In other
 103 words, if there is ever a discrepancy between the items
 104 table and the MARC XML, the items table should be considered
 105 accurate.
 106
 107 =head1 HISTORICAL NOTE
 108
 109 Most of the functions in C<C4::Items> were originally in
 110 the C<C4::Biblio> module.
 111
 112 =head1 CORE EXPORTED FUNCTIONS
 113
 114 The following functions are meant for use by users
 115 of C<C4::Items>
 116
 117 =cut
 118
 119 =head2 GetItem
 120
 121   $item = GetItem($itemnumber,$barcode,$serial);
 122
 123 Return item information, for a given itemnumber or barcode.
 124 The return value is a hashref mapping item column
 125 names to values.  If C<$serial> is true, include serial publication data.
 126
 127 =cut
 128
 129 sub GetItem {
 130     my ($itemnumber,$barcode, $serial) = @_;
 131     my $dbh = C4::Context->dbh;
 132         my $data;
 133     if ($itemnumber) {
 134         my $sth = $dbh->prepare("
 135             SELECT * FROM items
 136             WHERE itemnumber = ?");
 137         $sth->execute($itemnumber);
 138         $data = $sth->fetchrow_hashref;
 139     } else {
 140         my $sth = $dbh->prepare("
 141             SELECT * FROM items
 142             WHERE barcode = ?"
 143             );
 144         $sth->execute($barcode);
 145         $data = $sth->fetchrow_hashref;
 146     }
 147     if ( $serial) {
 148     my $ssth = $dbh->prepare("SELECT serialseq,publisheddate from serialitems left join serial on serialitems.serialid=serial.serialid where serialitems.itemnumber=?");
 149         $ssth->execute($data->{'itemnumber'}) ;
 150         ($data->{'serialseq'} , $data->{'publisheddate'}) = $ssth->fetchrow_array();
 151     }
 152         #if we don't have an items.itype, use biblioitems.itemtype.
 153         if( ! $data->{'itype'} ) {
 154                 my $sth = $dbh->prepare("SELECT itemtype FROM biblioitems  WHERE biblionumber = ?");
 155                 $sth->execute($data->{'biblionumber'});
 156                 ($data->{'itype'}) = $sth->fetchrow_array;
 157         }
 158     return $data;
 159 }    # sub GetItem
 160
 161 =head2 CartToShelf
 162
 163   CartToShelf($itemnumber);
 164
 165 Set the current shelving location of the item record
 166 to its stored permanent shelving location.  This is
 167 primarily used to indicate when an item whose current
 168 location is a special processing ('PROC') or shelving cart
 169 ('CART') location is back in the stacks.
 170
 171 =cut
 172
 173 sub CartToShelf {
 174     my ( $itemnumber ) = @_;
 175
 176     unless ( $itemnumber ) {
 177         croak "FAILED CartToShelf() - no itemnumber supplied";
 178     }
 179
 180     my $item = GetItem($itemnumber);
 181     $item->{location} = $item->{permanent_location};
 182     ModItem($item, undef, $itemnumber);
 183 }
 184
 185 =head2 AddItemFromMarc
 186
 187   my ($biblionumber, $biblioitemnumber, $itemnumber)
 188       = AddItemFromMarc($source_item_marc, $biblionumber);
 189
 190 Given a MARC::Record object containing an embedded item
 191 record and a biblionumber, create a new item record.
 192
 193 =cut
 194
 195 sub AddItemFromMarc {
 196     my ( $source_item_marc, $biblionumber ) = @_;
 197     my $dbh = C4::Context->dbh;
 198
 199     # parse item hash from MARC
 200     my $frameworkcode = GetFrameworkCode( $biblionumber );
 201         my ($itemtag,$itemsubfield)=GetMarcFromKohaField("items.itemnumber",$frameworkcode);
 202
 203         my $localitemmarc=MARC::Record->new;
 204         $localitemmarc->append_fields($source_item_marc->field($itemtag));
 205     my $item = &TransformMarcToKoha( $dbh, $localitemmarc, $frameworkcode ,'items');
 206     my $unlinked_item_subfields = _get_unlinked_item_subfields($localitemmarc, $frameworkcode);
 207     return AddItem($item, $biblionumber, $dbh, $frameworkcode, $unlinked_item_subfields);
 208 }
 209
 210 =head2 AddItem
 211
 212   my ($biblionumber, $biblioitemnumber, $itemnumber)
 213       = AddItem($item, $biblionumber[, $dbh, $frameworkcode, $unlinked_item_subfields]);
 214
 215 Given a hash containing item column names as keys,
 216 create a new Koha item record.
 217
 218 The first two optional parameters (C<$dbh> and C<$frameworkcode>)
 219 do not need to be supplied for general use; they exist
 220 simply to allow them to be picked up from AddItemFromMarc.
 221
 222 The final optional parameter, C<$unlinked_item_subfields>, contains
 223 an arrayref containing subfields present in the original MARC
 224 representation of the item (e.g., from the item editor) that are
 225 not mapped to C<items> columns directly but should instead
 226 be stored in C<items.more_subfields_xml> and included in
 227 the biblio items tag for display and indexing.
 228
 229 =cut
 230
 231 sub AddItem {
 232     my $item = shift;
 233     my $biblionumber = shift;
 234
 235     my $dbh           = @_ ? shift : C4::Context->dbh;
 236     my $frameworkcode = @_ ? shift : GetFrameworkCode( $biblionumber );
 237     my $unlinked_item_subfields;
 238     if (@_) {
 239         $unlinked_item_subfields = shift
 240     };
 241
 242     # needs old biblionumber and biblioitemnumber
 243     $item->{'biblionumber'} = $biblionumber;
 244     my $sth = $dbh->prepare("SELECT biblioitemnumber FROM biblioitems WHERE biblionumber=?");
 245     $sth->execute( $item->{'biblionumber'} );
 246     ($item->{'biblioitemnumber'}) = $sth->fetchrow;
 247
 248     _set_defaults_for_add($item);
 249     _set_derived_columns_for_add($item);
 250     $item->{'more_subfields_xml'} = _get_unlinked_subfields_xml($unlinked_item_subfields);
 251     # FIXME - checks here
 252     unless ( $item->{itype} ) {  # default to biblioitem.itemtype if no itype
 253         my $itype_sth = $dbh->prepare("SELECT itemtype FROM biblioitems WHERE biblionumber = ?");
 254         $itype_sth->execute( $item->{'biblionumber'} );
 255         ( $item->{'itype'} ) = $itype_sth->fetchrow_array;
 256     }
 257
 258         my ( $itemnumber, $error ) = _koha_new_item( $item, $item->{barcode} );
 259     $item->{'itemnumber'} = $itemnumber;
 260
 261     # create MARC tag representing item and add to bib
 262     my $new_item_marc = _marc_from_item_hash($item, $frameworkcode, $unlinked_item_subfields);
 263     _add_item_field_to_biblio($new_item_marc, $item->{'biblionumber'}, $frameworkcode );
 264
 265     logaction("CATALOGUING", "ADD", $itemnumber, "item") if C4::Context->preference("CataloguingLog");
 266
 267     return ($item->{biblionumber}, $item->{biblioitemnumber}, $itemnumber);
 268 }
 269
 270 =head2 AddItemBatchFromMarc
 271
 272   ($itemnumber_ref, $error_ref) = AddItemBatchFromMarc($record,
 273              $biblionumber, $biblioitemnumber, $frameworkcode);
 274
 275 Efficiently create item records from a MARC biblio record with
 276 embedded item fields.  This routine is suitable for batch jobs.
 277
 278 This API assumes that the bib record has already been
 279 saved to the C<biblio> and C<biblioitems> tables.  It does
 280 not expect that C<biblioitems.marc> and C<biblioitems.marcxml>
 281 are populated, but it will do so via a call to ModBibiloMarc.
 282
 283 The goal of this API is to have a similar effect to using AddBiblio
 284 and AddItems in succession, but without inefficient repeated
 285 parsing of the MARC XML bib record.
 286
 287 This function returns an arrayref of new itemsnumbers and an arrayref of item
 288 errors encountered during the processing.  Each entry in the errors
 289 list is a hashref containing the following keys:
 290
 291 =over
 292
 293 =item item_sequence
 294
 295 Sequence number of original item tag in the MARC record.
 296
 297 =item item_barcode
 298
 299 Item barcode, provide to assist in the construction of
 300 useful error messages.
 301
 302 =item error_condition
 303
 304 Code representing the error condition.  Can be 'duplicate_barcode',
 305 'invalid_homebranch', or 'invalid_holdingbranch'.
 306
 307 =item error_information
 308
 309 Additional information appropriate to the error condition.
 310
 311 =back
 312
 313 =cut
 314
 315 sub AddItemBatchFromMarc {
 316     my ($record, $biblionumber, $biblioitemnumber, $frameworkcode) = @_;
 317     my $error;
 318     my @itemnumbers = ();
 319     my @errors = ();
 320     my $dbh = C4::Context->dbh;
 321
 322     # loop through the item tags and start creating items
 323     my @bad_item_fields = ();
 324     my ($itemtag, $itemsubfield) = &GetMarcFromKohaField("items.itemnumber",'');
 325     my $item_sequence_num = 0;
 326     ITEMFIELD: foreach my $item_field ($record->field($itemtag)) {
 327         $item_sequence_num++;
 328         # we take the item field and stick it into a new
 329         # MARC record -- this is required so far because (FIXME)
 330         # TransformMarcToKoha requires a MARC::Record, not a MARC::Field
 331         # and there is no TransformMarcFieldToKoha
 332         my $temp_item_marc = MARC::Record->new();
 333         $temp_item_marc->append_fields($item_field);
 334
 335         # add biblionumber and biblioitemnumber
 336         my $item = TransformMarcToKoha( $dbh, $temp_item_marc, $frameworkcode, 'items' );
 337         my $unlinked_item_subfields = _get_unlinked_item_subfields($temp_item_marc, $frameworkcode);
 338         $item->{'more_subfields_xml'} = _get_unlinked_subfields_xml($unlinked_item_subfields);
 339         $item->{'biblionumber'} = $biblionumber;
 340         $item->{'biblioitemnumber'} = $biblioitemnumber;
 341
 342         # check for duplicate barcode
 343         my %item_errors = CheckItemPreSave($item);
 344         if (%item_errors) {
 345             push @errors, _repack_item_errors($item_sequence_num, $item, \%item_errors);
 346             push @bad_item_fields, $item_field;
 347             next ITEMFIELD;
 348         }
 349
 350         _set_defaults_for_add($item);
 351         _set_derived_columns_for_add($item);
 352         my ( $itemnumber, $error ) = _koha_new_item( $item, $item->{barcode} );
 353         warn $error if $error;
 354         push @itemnumbers, $itemnumber; # FIXME not checking error
 355         $item->{'itemnumber'} = $itemnumber;
 356
 357         logaction("CATALOGUING", "ADD", $itemnumber, "item") if C4::Context->preference("CataloguingLog");
 358
 359         my $new_item_marc = _marc_from_item_hash($item, $frameworkcode, $unlinked_item_subfields);
 360         $item_field->replace_with($new_item_marc->field($itemtag));
 361     }
 362
 363     # remove any MARC item fields for rejected items
 364     foreach my $item_field (@bad_item_fields) {
 365         $record->delete_field($item_field);
 366     }
 367
 368     # update the MARC biblio
 369     $biblionumber = ModBiblioMarc( $record, $biblionumber, $frameworkcode );
 370
 371     return (\@itemnumbers, \@errors);
 372 }
 373
 374 =head2 ModItemFromMarc
 375
 376   ModItemFromMarc($item_marc, $biblionumber, $itemnumber);
 377
 378 This function updates an item record based on a supplied
 379 C<MARC::Record> object containing an embedded item field.
 380 This API is meant for the use of C<additem.pl>; for
 381 other purposes, C<ModItem> should be used.
 382
 383 This function uses the hash %default_values_for_mod_from_marc,
 384 which contains default values for item fields to
 385 apply when modifying an item.  This is needed beccause
 386 if an item field's value is cleared, TransformMarcToKoha
 387 does not include the column in the
 388 hash that's passed to ModItem, which without
 389 use of this hash makes it impossible to clear
 390 an item field's value.  See bug 2466.
 391
 392 Note that only columns that can be directly
 393 changed from the cataloging and serials
 394 item editors are included in this hash.
 395
 396 =cut
 397
 398 my %default_values_for_mod_from_marc = (
 399     barcode              => undef,
 400     booksellerid         => undef,
 401     ccode                => undef,
 402     'items.cn_source'    => undef,
 403     copynumber           => undef,
 404     damaged              => 0,
 405     dateaccessioned      => undef,
 406     enumchron            => undef,
 407     holdingbranch        => undef,
 408     homebranch           => undef,
 409     itemcallnumber       => undef,
 410     itemlost             => 0,
 411     itemnotes            => undef,
 412     itype                => undef,
 413     location             => undef,
 414     materials            => undef,
 415     notforloan           => 0,
 416     paidfor              => undef,
 417     price                => undef,
 418     replacementprice     => undef,
 419     replacementpricedate => undef,
 420     restricted           => undef,
 421     stack                => undef,
 422     stocknumber          => undef,
 423     uri                  => undef,
 424     wthdrawn             => 0,
 425 );
 426
 427 sub ModItemFromMarc {
 428     my $item_marc = shift;
 429     my $biblionumber = shift;
 430     my $itemnumber = shift;
 431
 432     my $dbh = C4::Context->dbh;
 433     my $frameworkcode = GetFrameworkCode( $biblionumber );
 434         my ($itemtag,$itemsubfield)=GetMarcFromKohaField("items.itemnumber",$frameworkcode);
 435
 436         my $localitemmarc=MARC::Record->new;
 437         $localitemmarc->append_fields($item_marc->field($itemtag));
 438     my $item = &TransformMarcToKoha( $dbh, $localitemmarc, $frameworkcode, 'items');
 439     foreach my $item_field (keys %default_values_for_mod_from_marc) {
 440         $item->{$item_field} = $default_values_for_mod_from_marc{$item_field} unless exists $item->{$item_field};
 441     }
 442     my $unlinked_item_subfields = _get_unlinked_item_subfields($localitemmarc, $frameworkcode);
 443
 444     return ModItem($item, $biblionumber, $itemnumber, $dbh, $frameworkcode, $unlinked_item_subfields);
 445 }
 446
 447 =head2 ModItem
 448
 449   ModItem({ column => $newvalue }, $biblionumber,
 450                   $itemnumber[, $original_item_marc]);
 451
 452 Change one or more columns in an item record and update
 453 the MARC representation of the item.
 454
 455 The first argument is a hashref mapping from item column
 456 names to the new values.  The second and third arguments
 457 are the biblionumber and itemnumber, respectively.
 458
 459 The fourth, optional parameter, C<$unlinked_item_subfields>, contains
 460 an arrayref containing subfields present in the original MARC
 461 representation of the item (e.g., from the item editor) that are
 462 not mapped to C<items> columns directly but should instead
 463 be stored in C<items.more_subfields_xml> and included in
 464 the biblio items tag for display and indexing.
 465
 466 If one of the changed columns is used to calculate
 467 the derived value of a column such as C<items.cn_sort>,
 468 this routine will perform the necessary calculation
 469 and set the value.
 470
 471 =cut
 472
 473 sub ModItem {
 474     my $item = shift;
 475     my $biblionumber = shift;
 476     my $itemnumber = shift;
 477
 478     # if $biblionumber is undefined, get it from the current item
 479     unless (defined $biblionumber) {
 480         $biblionumber = _get_single_item_column('biblionumber', $itemnumber);
 481     }
 482
 483     my $dbh           = @_ ? shift : C4::Context->dbh;
 484     my $frameworkcode = @_ ? shift : GetFrameworkCode( $biblionumber );
 485
 486     my $unlinked_item_subfields;
 487     if (@_) {
 488         $unlinked_item_subfields = shift;
 489         $item->{'more_subfields_xml'} = _get_unlinked_subfields_xml($unlinked_item_subfields);
 490     };
 491
 492     $item->{'itemnumber'} = $itemnumber or return undef;
 493     _set_derived_columns_for_mod($item);
 494     _do_column_fixes_for_mod($item);
 495     # FIXME add checks
 496     # duplicate barcode
 497     # attempt to change itemnumber
 498     # attempt to change biblionumber (if we want
 499     # an API to relink an item to a different bib,
 500     # it should be a separate function)
 501
 502     # update items table
 503     _koha_modify_item($item);
 504
 505     # update biblio MARC XML
 506     my $whole_item = GetItem($itemnumber) or die "FAILED GetItem($itemnumber)";
 507
 508     unless (defined $unlinked_item_subfields) {
 509         $unlinked_item_subfields = _parse_unlinked_item_subfields_from_xml($whole_item->{'more_subfields_xml'});
 510     }
 511     my $new_item_marc = _marc_from_item_hash($whole_item, $frameworkcode, $unlinked_item_subfields)
 512         or die "FAILED _marc_from_item_hash($whole_item, $frameworkcode)";
 513
 514     _replace_item_field_in_biblio($new_item_marc, $biblionumber, $itemnumber, $frameworkcode);
 515         ($new_item_marc       eq '0') and die "$new_item_marc is '0', not hashref";  # logaction line would crash anyway
 516     logaction("CATALOGUING", "MODIFY", $itemnumber, $new_item_marc->as_formatted) if C4::Context->preference("CataloguingLog");
 517 }
 518
 519 =head2 ModItemTransfer
 520
 521   ModItemTransfer($itenumber, $frombranch, $tobranch);
 522
 523 Marks an item as being transferred from one branch
 524 to another.
 525
 526 =cut
 527
 528 sub ModItemTransfer {
 529     my ( $itemnumber, $frombranch, $tobranch ) = @_;
 530
 531     my $dbh = C4::Context->dbh;
 532
 533     #new entry in branchtransfers....
 534     my $sth = $dbh->prepare(
 535         "INSERT INTO branchtransfers (itemnumber, frombranch, datesent, tobranch)
 536         VALUES (?, ?, NOW(), ?)");
 537     $sth->execute($itemnumber, $frombranch, $tobranch);
 538
 539     ModItem({ holdingbranch => $tobranch }, undef, $itemnumber);
 540     ModDateLastSeen($itemnumber);
 541     return;
 542 }
 543
 544 =head2 ModDateLastSeen
 545
 546   ModDateLastSeen($itemnum);
 547
 548 Mark item as seen. Is called when an item is issued, returned or manually marked during inventory/stocktaking.
 549 C<$itemnum> is the item number
 550
 551 =cut
 552
 553 sub ModDateLastSeen {
 554     my ($itemnumber) = @_;
 555
 556     my $today = C4::Dates->new();
 557     ModItem({ itemlost => 0, datelastseen => $today->output("iso") }, undef, $itemnumber);
 558 }
 559
 560 =head2 DelItem
 561
 562   DelItem($dbh, $biblionumber, $itemnumber);
 563
 564 Exported function (core API) for deleting an item record in Koha.
 565
 566 =cut
 567
 568 sub DelItem {
 569     my ( $dbh, $biblionumber, $itemnumber ) = @_;
 570
 571     # FIXME check the item has no current issues
 572
 573     _koha_delete_item( $dbh, $itemnumber );
 574
 575     # get the MARC record
 576     my $record = GetMarcBiblio($biblionumber);
 577     my $frameworkcode = GetFrameworkCode($biblionumber);
 578
 579     # backup the record
 580     my $copy2deleted = $dbh->prepare("UPDATE deleteditems SET marc=? WHERE itemnumber=?");
 581     $copy2deleted->execute( $record->as_usmarc(), $itemnumber );
 582
 583     #search item field code
 584     my ( $itemtag, $itemsubfield ) = GetMarcFromKohaField("items.itemnumber",$frameworkcode);
 585     my @fields = $record->field($itemtag);
 586
 587     # delete the item specified
 588     foreach my $field (@fields) {
 589         if ( $field->subfield($itemsubfield) eq $itemnumber ) {
 590             $record->delete_field($field);
 591         }
 592     }
 593     &ModBiblioMarc( $record, $biblionumber, $frameworkcode );
 594     logaction("CATALOGUING", "DELETE", $itemnumber, "item") if C4::Context->preference("CataloguingLog");
 595 }
 596
 597 =head2 CheckItemPreSave
 598
 599     my $item_ref = TransformMarcToKoha($marc, 'items');
 600     # do stuff
 601     my %errors = CheckItemPreSave($item_ref);
 602     if (exists $errors{'duplicate_barcode'}) {
 603         print "item has duplicate barcode: ", $errors{'duplicate_barcode'}, "\n";
 604     } elsif (exists $errors{'invalid_homebranch'}) {
 605         print "item has invalid home branch: ", $errors{'invalid_homebranch'}, "\n";
 606     } elsif (exists $errors{'invalid_holdingbranch'}) {
 607         print "item has invalid holding branch: ", $errors{'invalid_holdingbranch'}, "\n";
 608     } else {
 609         print "item is OK";
 610     }
 611
 612 Given a hashref containing item fields, determine if it can be
 613 inserted or updated in the database.  Specifically, checks for
 614 database integrity issues, and returns a hash containing any
 615 of the following keys, if applicable.
 616
 617 =over 2
 618
 619 =item duplicate_barcode
 620
 621 Barcode, if it duplicates one already found in the database.
 622
 623 =item invalid_homebranch
 624
 625 Home branch, if not defined in branches table.
 626
 627 =item invalid_holdingbranch
 628
 629 Holding branch, if not defined in branches table.
 630
 631 =back
 632
 633 This function does NOT implement any policy-related checks,
 634 e.g., whether current operator is allowed to save an
 635 item that has a given branch code.
 636
 637 =cut
 638
 639 sub CheckItemPreSave {
 640     my $item_ref = shift;
 641
 642     my %errors = ();
 643
 644     # check for duplicate barcode
 645     if (exists $item_ref->{'barcode'} and defined $item_ref->{'barcode'}) {
 646         my $existing_itemnumber = GetItemnumberFromBarcode($item_ref->{'barcode'});
 647         if ($existing_itemnumber) {
 648             if (!exists $item_ref->{'itemnumber'}                       # new item
 649                 or $item_ref->{'itemnumber'} != $existing_itemnumber) { # existing item
 650                 $errors{'duplicate_barcode'} = $item_ref->{'barcode'};
 651             }
 652         }
 653     }
 654
 655     # check for valid home branch
 656     if (exists $item_ref->{'homebranch'} and defined $item_ref->{'homebranch'}) {
 657         my $branch_name = GetBranchName($item_ref->{'homebranch'});
 658         unless (defined $branch_name) {
 659             # relies on fact that branches.branchname is a non-NULL column,
 660             # so GetBranchName returns undef only if branch does not exist
 661             $errors{'invalid_homebranch'} = $item_ref->{'homebranch'};
 662         }
 663     }
 664
 665     # check for valid holding branch
 666     if (exists $item_ref->{'holdingbranch'} and defined $item_ref->{'holdingbranch'}) {
 667         my $branch_name = GetBranchName($item_ref->{'holdingbranch'});
 668         unless (defined $branch_name) {
 669             # relies on fact that branches.branchname is a non-NULL column,
 670             # so GetBranchName returns undef only if branch does not exist
 671             $errors{'invalid_holdingbranch'} = $item_ref->{'holdingbranch'};
 672         }
 673     }
 674
 675     return %errors;
 676
 677 }
 678
 679 =head1 EXPORTED SPECIAL ACCESSOR FUNCTIONS
 680
 681 The following functions provide various ways of
 682 getting an item record, a set of item records, or
 683 lists of authorized values for certain item fields.
 684
 685 Some of the functions in this group are candidates
 686 for refactoring -- for example, some of the code
 687 in C<GetItemsByBiblioitemnumber> and C<GetItemsInfo>
 688 has copy-and-paste work.
 689
 690 =cut
 691
 692 =head2 GetItemStatus
 693
 694   $itemstatushash = GetItemStatus($fwkcode);
 695
 696 Returns a list of valid values for the
 697 C<items.notforloan> field.
 698
 699 NOTE: does B<not> return an individual item's
 700 status.
 701
 702 Can be MARC dependant.
 703 fwkcode is optional.
 704 But basically could be can be loan or not
 705 Create a status selector with the following code
 706
 707 =head3 in PERL SCRIPT
 708
 709  my $itemstatushash = getitemstatus;
 710  my @itemstatusloop;
 711  foreach my $thisstatus (keys %$itemstatushash) {
 712      my %row =(value => $thisstatus,
 713                  statusname => $itemstatushash->{$thisstatus}->{'statusname'},
 714              );
 715      push @itemstatusloop, \%row;
 716  }
 717  $template->param(statusloop=>\@itemstatusloop);
 718
 719 =head3 in TEMPLATE
 720
 721  <select name="statusloop">
 722      <option value="">Default</option>
 723  <!-- TMPL_LOOP name="statusloop" -->
 724      <option value="<!-- TMPL_VAR name="value" -->" <!-- TMPL_IF name="selected" -->selected<!-- /TMPL_IF -->><!-- TMPL_VAR name="statusname" --></option>
 725  <!-- /TMPL_LOOP -->
 726  </select>
 727
 728 =cut
 729
 730 sub GetItemStatus {
 731
 732     # returns a reference to a hash of references to status...
 733     my ($fwk) = @_;
 734     my %itemstatus;
 735     my $dbh = C4::Context->dbh;
 736     my $sth;
 737     $fwk = '' unless ($fwk);
 738     my ( $tag, $subfield ) =
 739       GetMarcFromKohaField( "items.notforloan", $fwk );
 740     if ( $tag and $subfield ) {
 741         my $sth =
 742           $dbh->prepare(
 743             "SELECT authorised_value
 744             FROM marc_subfield_structure
 745             WHERE tagfield=?
 746                 AND tagsubfield=?
 747                 AND frameworkcode=?
 748             "
 749           );
 750         $sth->execute( $tag, $subfield, $fwk );
 751         if ( my ($authorisedvaluecat) = $sth->fetchrow ) {
 752             my $authvalsth =
 753               $dbh->prepare(
 754                 "SELECT authorised_value,lib
 755                 FROM authorised_values
 756                 WHERE category=?
 757                 ORDER BY lib
 758                 "
 759               );
 760             $authvalsth->execute($authorisedvaluecat);
 761             while ( my ( $authorisedvalue, $lib ) = $authvalsth->fetchrow ) {
 762                 $itemstatus{$authorisedvalue} = $lib;
 763             }
 764             return \%itemstatus;
 765             exit 1;
 766         }
 767         else {
 768
 769             #No authvalue list
 770             # build default
 771         }
 772     }
 773
 774     #No authvalue list
 775     #build default
 776     $itemstatus{"1"} = "Not For Loan";
 777     return \%itemstatus;
 778 }
 779
 780 =head2 GetItemLocation
 781
 782   $itemlochash = GetItemLocation($fwk);
 783
 784 Returns a list of valid values for the
 785 C<items.location> field.
 786
 787 NOTE: does B<not> return an individual item's
 788 location.
 789
 790 where fwk stands for an optional framework code.
 791 Create a location selector with the following code
 792
 793 =head3 in PERL SCRIPT
 794
 795   my $itemlochash = getitemlocation;
 796   my @itemlocloop;
 797   foreach my $thisloc (keys %$itemlochash) {
 798       my $selected = 1 if $thisbranch eq $branch;
 799       my %row =(locval => $thisloc,
 800                   selected => $selected,
 801                   locname => $itemlochash->{$thisloc},
 802                );
 803       push @itemlocloop, \%row;
 804   }
 805   $template->param(itemlocationloop => \@itemlocloop);
 806
 807 =head3 in TEMPLATE
 808
 809   <select name="location">
 810       <option value="">Default</option>
 811   <!-- TMPL_LOOP name="itemlocationloop" -->
 812       <option value="<!-- TMPL_VAR name="locval" -->" <!-- TMPL_IF name="selected" -->selected<!-- /TMPL_IF -->><!-- TMPL_VAR name="locname" --></option>
 813   <!-- /TMPL_LOOP -->
 814   </select>
 815
 816 =cut
 817
 818 sub GetItemLocation {
 819
 820     # returns a reference to a hash of references to location...
 821     my ($fwk) = @_;
 822     my %itemlocation;
 823     my $dbh = C4::Context->dbh;
 824     my $sth;
 825     $fwk = '' unless ($fwk);
 826     my ( $tag, $subfield ) =
 827       GetMarcFromKohaField( "items.location", $fwk );
 828     if ( $tag and $subfield ) {
 829         my $sth =
 830           $dbh->prepare(
 831             "SELECT authorised_value
 832             FROM marc_subfield_structure
 833             WHERE tagfield=?
 834                 AND tagsubfield=?
 835                 AND frameworkcode=?"
 836           );
 837         $sth->execute( $tag, $subfield, $fwk );
 838         if ( my ($authorisedvaluecat) = $sth->fetchrow ) {
 839             my $authvalsth =
 840               $dbh->prepare(
 841                 "SELECT authorised_value,lib
 842                 FROM authorised_values
 843                 WHERE category=?
 844                 ORDER BY lib"
 845               );
 846             $authvalsth->execute($authorisedvaluecat);
 847             while ( my ( $authorisedvalue, $lib ) = $authvalsth->fetchrow ) {
 848                 $itemlocation{$authorisedvalue} = $lib;
 849             }
 850             return \%itemlocation;
 851             exit 1;
 852         }
 853         else {
 854
 855             #No authvalue list
 856             # build default
 857         }
 858     }
 859
 860     #No authvalue list
 861     #build default
 862     $itemlocation{"1"} = "Not For Loan";
 863     return \%itemlocation;
 864 }
 865
 866 =head2 GetLostItems
 867
 868   $items = GetLostItems( $where, $orderby );
 869
 870 This function gets a list of lost items.
 871
 872 =over 2
 873
 874 =item input:
 875
 876 C<$where> is a hashref. it containts a field of the items table as key
 877 and the value to match as value. For example:
 878
 879 { barcode    => 'abc123',
 880   homebranch => 'CPL',    }
 881
 882 C<$orderby> is a field of the items table by which the resultset
 883 should be orderd.
 884
 885 =item return:
 886
 887 C<$items> is a reference to an array full of hashrefs with columns
 888 from the "items" table as keys.
 889
 890 =item usage in the perl script:
 891
 892   my $where = { barcode => '0001548' };
 893   my $items = GetLostItems( $where, "homebranch" );
 894   $template->param( itemsloop => $items );
 895
 896 =back
 897
 898 =cut
 899
 900 sub GetLostItems {
 901     # Getting input args.
 902     my $where   = shift;
 903     my $orderby = shift;
 904     my $dbh     = C4::Context->dbh;
 905
 906     my $query   = "
 907         SELECT *
 908         FROM   items
 909             LEFT JOIN biblio ON (items.biblionumber = biblio.biblionumber)
 910             LEFT JOIN biblioitems ON (items.biblionumber = biblioitems.biblionumber)
 911             LEFT JOIN authorised_values ON (items.itemlost = authorised_values.authorised_value)
 912         WHERE
 913                 authorised_values.category = 'LOST'
 914                 AND itemlost IS NOT NULL
 915                 AND itemlost <> 0
 916     ";
 917     my @query_parameters;
 918     foreach my $key (keys %$where) {
 919         $query .= " AND $key LIKE ?";
 920         push @query_parameters, "%$where->{$key}%";
 921     }
 922     my @ordervalues = qw/title author homebranch itype barcode price replacementprice lib datelastseen location/;
 923
 924     if ( defined $orderby && grep($orderby, @ordervalues)) {
 925         $query .= ' ORDER BY '.$orderby;
 926     }
 927
 928     my $sth = $dbh->prepare($query);
 929     $sth->execute( @query_parameters );
 930     my $items = [];
 931     while ( my $row = $sth->fetchrow_hashref ){
 932         push @$items, $row;
 933     }
 934     return $items;
 935 }
 936
 937 =head2 GetItemsForInventory
 938
 939   $itemlist = GetItemsForInventory($minlocation, $maxlocation,
 940                  $location, $itemtype $datelastseen, $branch,
 941                  $offset, $size, $statushash);
 942
 943 Retrieve a list of title/authors/barcode/callnumber, for biblio inventory.
 944
 945 The sub returns a reference to a list of hashes, each containing
 946 itemnumber, author, title, barcode, item callnumber, and date last
 947 seen. It is ordered by callnumber then title.
 948
 949 The required minlocation & maxlocation parameters are used to specify a range of item callnumbers
 950 the datelastseen can be used to specify that you want to see items not seen since a past date only.
 951 offset & size can be used to retrieve only a part of the whole listing (defaut behaviour)
 952 $statushash requires a hashref that has the authorized values fieldname (intems.notforloan, etc...) as keys, and an arrayref of statuscodes we are searching for as values.
 953
 954 =cut
 955
 956 sub GetItemsForInventory {
 957     my ( $minlocation, $maxlocation,$location, $itemtype, $ignoreissued, $datelastseen, $branch, $offset, $size, $statushash ) = @_;
 958     my $dbh = C4::Context->dbh;
 959     my ( @bind_params, @where_strings );
 960
 961     my $query = <<'END_SQL';
 962 SELECT items.itemnumber, barcode, itemcallnumber, title, author, biblio.biblionumber, datelastseen
 963 FROM items
 964   LEFT JOIN biblio ON items.biblionumber = biblio.biblionumber
 965   LEFT JOIN biblioitems on items.biblionumber = biblioitems.biblionumber
 966 END_SQL
 967     if ($statushash){
 968         for my $authvfield (keys %$statushash){
 969             if ( scalar @{$statushash->{$authvfield}} > 0 ){
 970                 my $joinedvals = join ',', @{$statushash->{$authvfield}};
 971                 push @where_strings, "$authvfield in (" . $joinedvals . ")";
 972             }
 973         }
 974     }
 975
 976     if ($minlocation) {
 977         push @where_strings, 'itemcallnumber >= ?';
 978         push @bind_params, $minlocation;
 979     }
 980
 981     if ($maxlocation) {
 982         push @where_strings, 'itemcallnumber <= ?';
 983         push @bind_params, $maxlocation;
 984     }
 985
 986     if ($datelastseen) {
 987         $datelastseen = format_date_in_iso($datelastseen);
 988         push @where_strings, '(datelastseen < ? OR datelastseen IS NULL)';
 989         push @bind_params, $datelastseen;
 990     }
 991
 992     if ( $location ) {
 993         push @where_strings, 'items.location = ?';
 994         push @bind_params, $location;
 995     }
 996
 997     if ( $branch ) {
 998         push @where_strings, 'items.homebranch = ?';
 999         push @bind_params, $branch;
1000     }
1001
1002     if ( $itemtype ) {
1003         push @where_strings, 'biblioitems.itemtype = ?';
1004         push @bind_params, $itemtype;
1005     }
1006
1007     if ( $ignoreissued) {
1008         $query .= "LEFT JOIN issues ON items.itemnumber = issues.itemnumber ";
1009         push @where_strings, 'issues.date_due IS NULL';
1010     }
1011
1012     if ( @where_strings ) {
1013         $query .= 'WHERE ';
1014         $query .= join ' AND ', @where_strings;
1015     }
1016     $query .= ' ORDER BY items.cn_sort, itemcallnumber, title';
1017     my $sth = $dbh->prepare($query);
1018     $sth->execute( @bind_params );
1019
1020     my @results;
1021     $size--;
1022     while ( my $row = $sth->fetchrow_hashref ) {
1023         $offset-- if ($offset);
1024         $row->{datelastseen}=format_date($row->{datelastseen});
1025         if ( ( !$offset ) && $size ) {
1026             push @results, $row;
1027             $size--;
1028         }
1029     }
1030     return \@results;
1031 }
1032
1033 =head2 GetItemsCount
1034
1035   $count = &GetItemsCount( $biblionumber);
1036
1037 This function return count of item with $biblionumber
1038
1039 =cut
1040
1041 sub GetItemsCount {
1042     my ( $biblionumber ) = @_;
1043     my $dbh = C4::Context->dbh;
1044     my $query = "SELECT count(*)
1045           FROM  items
1046           WHERE biblionumber=?";
1047     my $sth = $dbh->prepare($query);
1048     $sth->execute($biblionumber);
1049     my $count = $sth->fetchrow;
1050     return ($count);
1051 }
1052
1053 =head2 GetItemInfosOf
1054
1055   GetItemInfosOf(@itemnumbers);
1056
1057 =cut
1058
1059 sub GetItemInfosOf {
1060     my @itemnumbers = @_;
1061
1062     my $query = '
1063         SELECT *
1064         FROM items
1065         WHERE itemnumber IN (' . join( ',', @itemnumbers ) . ')
1066     ';
1067     return get_infos_of( $query, 'itemnumber' );
1068 }
1069
1070 =head2 GetItemsByBiblioitemnumber
1071
1072   GetItemsByBiblioitemnumber($biblioitemnumber);
1073
1074 Returns an arrayref of hashrefs suitable for use in a TMPL_LOOP
1075 Called by C<C4::XISBN>
1076
1077 =cut
1078
1079 sub GetItemsByBiblioitemnumber {
1080     my ( $bibitem ) = @_;
1081     my $dbh = C4::Context->dbh;
1082     my $sth = $dbh->prepare("SELECT * FROM items WHERE items.biblioitemnumber = ?") || die $dbh->errstr;
1083     # Get all items attached to a biblioitem
1084     my $i = 0;
1085     my @results;
1086     $sth->execute($bibitem) || die $sth->errstr;
1087     while ( my $data = $sth->fetchrow_hashref ) {
1088         # Foreach item, get circulation information
1089         my $sth2 = $dbh->prepare( "SELECT * FROM issues,borrowers
1090                                    WHERE itemnumber = ?
1091                                    AND issues.borrowernumber = borrowers.borrowernumber"
1092         );
1093         $sth2->execute( $data->{'itemnumber'} );
1094         if ( my $data2 = $sth2->fetchrow_hashref ) {
1095             # if item is out, set the due date and who it is out too
1096             $data->{'date_due'}   = $data2->{'date_due'};
1097             $data->{'cardnumber'} = $data2->{'cardnumber'};
1098             $data->{'borrowernumber'}   = $data2->{'borrowernumber'};
1099         }
1100         else {
1101             # set date_due to blank, so in the template we check itemlost, and wthdrawn
1102             $data->{'date_due'} = '';
1103         }    # else
1104         # Find the last 3 people who borrowed this item.
1105         my $query2 = "SELECT * FROM old_issues, borrowers WHERE itemnumber = ?
1106                       AND old_issues.borrowernumber = borrowers.borrowernumber
1107                       ORDER BY returndate desc,timestamp desc LIMIT 3";
1108         $sth2 = $dbh->prepare($query2) || die $dbh->errstr;
1109         $sth2->execute( $data->{'itemnumber'} ) || die $sth2->errstr;
1110         my $i2 = 0;
1111         while ( my $data2 = $sth2->fetchrow_hashref ) {
1112             $data->{"timestamp$i2"} = $data2->{'timestamp'};
1113             $data->{"card$i2"}      = $data2->{'cardnumber'};
1114             $data->{"borrower$i2"}  = $data2->{'borrowernumber'};
1115             $i2++;
1116         }
1117         push(@results,$data);
1118     }
1119     return (\@results);
1120 }
1121
1122 =head2 GetItemsInfo
1123
1124   @results = GetItemsInfo($biblionumber, $type);
1125
1126 Returns information about books with the given biblionumber.
1127
1128 C<$type> may be either C<intra> or anything else. If it is not set to
1129 C<intra>, then the search will exclude lost, very overdue, and
1130 withdrawn items.
1131
1132 C<GetItemsInfo> returns a list of references-to-hash. Each element
1133 contains a number of keys. Most of them are table items from the
1134 C<biblio>, C<biblioitems>, C<items>, and C<itemtypes> tables in the
1135 Koha database. Other keys include:
1136
1137 =over 2
1138
1139 =item C<$data-E<gt>{branchname}>
1140
1141 The name (not the code) of the branch to which the book belongs.
1142
1143 =item C<$data-E<gt>{datelastseen}>
1144
1145 This is simply C<items.datelastseen>, except that while the date is
1146 stored in YYYY-MM-DD format in the database, here it is converted to
1147 DD/MM/YYYY format. A NULL date is returned as C<//>.
1148
1149 =item C<$data-E<gt>{datedue}>
1150
1151 =item C<$data-E<gt>{class}>
1152
1153 This is the concatenation of C<biblioitems.classification>, the book's
1154 Dewey code, and C<biblioitems.subclass>.
1155
1156 =item C<$data-E<gt>{ocount}>
1157
1158 I think this is the number of copies of the book available.
1159
1160 =item C<$data-E<gt>{order}>
1161
1162 If this is set, it is set to C<One Order>.
1163
1164 =back
1165
1166 =cut
1167
1168 sub GetItemsInfo {
1169     my ( $biblionumber, $type ) = @_;
1170     my $dbh   = C4::Context->dbh;
1171     # note biblioitems.* must be avoided to prevent large marc and marcxml fields from killing performance.
1172     my $query = "
1173     SELECT items.*,
1174            biblio.*,
1175            biblioitems.volume,
1176            biblioitems.number,
1177            biblioitems.itemtype,
1178            biblioitems.isbn,
1179            biblioitems.issn,
1180            biblioitems.publicationyear,
1181            biblioitems.publishercode,
1182            biblioitems.volumedate,
1183            biblioitems.volumedesc,
1184            biblioitems.lccn,
1185            biblioitems.url,
1186            items.notforloan as itemnotforloan,
1187            itemtypes.description,
1188            itemtypes.notforloan as notforloan_per_itemtype,
1189            branchurl
1190      FROM items
1191      LEFT JOIN branches ON items.homebranch = branches.branchcode
1192      LEFT JOIN biblio      ON      biblio.biblionumber     = items.biblionumber
1193      LEFT JOIN biblioitems ON biblioitems.biblioitemnumber = items.biblioitemnumber
1194      LEFT JOIN itemtypes   ON   itemtypes.itemtype         = "
1195      . (C4::Context->preference('item-level_itypes') ? 'items.itype' : 'biblioitems.itemtype');
1196     $query .= " WHERE items.biblionumber = ? ORDER BY branches.branchname,items.dateaccessioned desc" ;
1197     my $sth = $dbh->prepare($query);
1198     $sth->execute($biblionumber);
1199     my $i = 0;
1200     my @results;
1201     my $serial;
1202
1203     my $isth    = $dbh->prepare(
1204         "SELECT issues.*,borrowers.cardnumber,borrowers.surname,borrowers.firstname,borrowers.branchcode as bcode
1205         FROM   issues LEFT JOIN borrowers ON issues.borrowernumber=borrowers.borrowernumber
1206         WHERE  itemnumber = ?"
1207        );
1208         my $ssth = $dbh->prepare("SELECT serialseq,publisheddate from serialitems left join serial on serialitems.serialid=serial.serialid where serialitems.itemnumber=? ");
1209         while ( my $data = $sth->fetchrow_hashref ) {
1210         my $datedue = '';
1211         my $count_reserves;
1212         $isth->execute( $data->{'itemnumber'} );
1213         if ( my $idata = $isth->fetchrow_hashref ) {
1214             $data->{borrowernumber} = $idata->{borrowernumber};
1215             $data->{cardnumber}     = $idata->{cardnumber};
1216             $data->{surname}     = $idata->{surname};
1217             $data->{firstname}     = $idata->{firstname};
1218             $datedue                = $idata->{'date_due'};
1219         if (C4::Context->preference("IndependantBranches")){
1220         my $userenv = C4::Context->userenv;
1221         if ( ($userenv) && ( $userenv->{flags} % 2 != 1 ) ) {
1222             $data->{'NOTSAMEBRANCH'} = 1 if ($idata->{'bcode'} ne $userenv->{branch});
1223         }
1224         }
1225         }
1226                 if ( $data->{'serial'}) {
1227                         $ssth->execute($data->{'itemnumber'}) ;
1228                         ($data->{'serialseq'} , $data->{'publisheddate'}) = $ssth->fetchrow_array();
1229                         $serial = 1;
1230         }
1231                 if ( $datedue eq '' ) {
1232             my ( $restype, $reserves ) =
1233               C4::Reserves::CheckReserves( $data->{'itemnumber'} );
1234 # Previous conditional check with if ($restype) is not needed because a true
1235 # result for one item will result in subsequent items defaulting to this true
1236 # value.
1237             $count_reserves = $restype;
1238         }
1239         #get branch information.....
1240         my $bsth = $dbh->prepare(
1241             "SELECT * FROM branches WHERE branchcode = ?
1242         "
1243         );
1244         $bsth->execute( $data->{'holdingbranch'} );
1245         if ( my $bdata = $bsth->fetchrow_hashref ) {
1246             $data->{'branchname'} = $bdata->{'branchname'};
1247         }
1248         $data->{'datedue'}        = $datedue;
1249         $data->{'count_reserves'} = $count_reserves;
1250
1251         # get notforloan complete status if applicable
1252         my $sthnflstatus = $dbh->prepare(
1253             'SELECT authorised_value
1254             FROM   marc_subfield_structure
1255             WHERE  kohafield="items.notforloan"
1256         '
1257         );
1258
1259         $sthnflstatus->execute;
1260         my ($authorised_valuecode) = $sthnflstatus->fetchrow;
1261         if ($authorised_valuecode) {
1262             $sthnflstatus = $dbh->prepare(
1263                 "SELECT lib FROM authorised_values
1264                  WHERE  category=?
1265                  AND authorised_value=?"
1266             );
1267             $sthnflstatus->execute( $authorised_valuecode,
1268                 $data->{itemnotforloan} );
1269             my ($lib) = $sthnflstatus->fetchrow;
1270             $data->{notforloanvalue} = $lib;
1271         }
1272
1273         # get restricted status and description if applicable
1274         my $restrictedstatus = $dbh->prepare(
1275             'SELECT authorised_value
1276             FROM   marc_subfield_structure
1277             WHERE  kohafield="items.restricted"
1278         '
1279         );
1280
1281         $restrictedstatus->execute;
1282         ($authorised_valuecode) = $restrictedstatus->fetchrow;
1283         if ($authorised_valuecode) {
1284             $restrictedstatus = $dbh->prepare(
1285                 "SELECT lib,lib_opac FROM authorised_values
1286                  WHERE  category=?
1287                  AND authorised_value=?"
1288             );
1289             $restrictedstatus->execute( $authorised_valuecode,
1290                 $data->{restricted} );
1291
1292             if ( my $rstdata = $restrictedstatus->fetchrow_hashref ) {
1293                 $data->{restricted} = $rstdata->{'lib'};
1294                 $data->{restrictedopac} = $rstdata->{'lib_opac'};
1295             }
1296         }
1297
1298         # my stack procedures
1299         my $stackstatus = $dbh->prepare(
1300             'SELECT authorised_value
1301              FROM   marc_subfield_structure
1302              WHERE  kohafield="items.stack"
1303         '
1304         );
1305         $stackstatus->execute;
1306
1307         ($authorised_valuecode) = $stackstatus->fetchrow;
1308         if ($authorised_valuecode) {
1309             $stackstatus = $dbh->prepare(
1310                 "SELECT lib
1311                  FROM   authorised_values
1312                  WHERE  category=?
1313                  AND    authorised_value=?
1314             "
1315             );
1316             $stackstatus->execute( $authorised_valuecode, $data->{stack} );
1317             my ($lib) = $stackstatus->fetchrow;
1318             $data->{stack} = $lib;
1319         }
1320         # Find the last 3 people who borrowed this item.
1321         my $sth2 = $dbh->prepare("SELECT * FROM old_issues,borrowers
1322                                     WHERE itemnumber = ?
1323                                     AND old_issues.borrowernumber = borrowers.borrowernumber
1324                                     ORDER BY returndate DESC
1325                                     LIMIT 3");
1326         $sth2->execute($data->{'itemnumber'});
1327         my $ii = 0;
1328         while (my $data2 = $sth2->fetchrow_hashref()) {
1329             $data->{"timestamp$ii"} = $data2->{'timestamp'} if $data2->{'timestamp'};
1330             $data->{"card$ii"}      = $data2->{'cardnumber'} if $data2->{'cardnumber'};
1331             $data->{"borrower$ii"}  = $data2->{'borrowernumber'} if $data2->{'borrowernumber'};
1332             $ii++;
1333         }
1334
1335         $results[$i] = $data;
1336         $i++;
1337     }
1338         if($serial) {
1339                 return( sort { ($b->{'publisheddate'} || $b->{'enumchron'}) cmp ($a->{'publisheddate'} || $a->{'enumchron'}) } @results );
1340         } else {
1341         return (@results);
1342         }
1343 }
1344
1345 =head2 GetLastAcquisitions
1346
1347   my $lastacq = GetLastAcquisitions({'branches' => ('branch1','branch2'),
1348                                     'itemtypes' => ('BK','BD')}, 10);
1349
1350 =cut
1351
1352 sub  GetLastAcquisitions {
1353         my ($data,$max) = @_;
1354
1355         my $itemtype = C4::Context->preference('item-level_itypes') ? 'itype' : 'itemtype';
1356
1357         my $number_of_branches = @{$data->{branches}};
1358         my $number_of_itemtypes   = @{$data->{itemtypes}};
1359
1360
1361         my @where = ('WHERE 1 ');
1362         $number_of_branches and push @where
1363            , 'AND holdingbranch IN ('
1364            , join(',', ('?') x $number_of_branches )
1365            , ')'
1366          ;
1367
1368         $number_of_itemtypes and push @where
1369            , "AND $itemtype IN ("
1370            , join(',', ('?') x $number_of_itemtypes )
1371            , ')'
1372          ;
1373
1374         my $query = "SELECT biblio.biblionumber as biblionumber, title, dateaccessioned
1375                                  FROM items RIGHT JOIN biblio ON (items.biblionumber=biblio.biblionumber)
1376                                     RIGHT JOIN biblioitems ON (items.biblioitemnumber=biblioitems.biblioitemnumber)
1377                                     @where
1378                                     GROUP BY biblio.biblionumber
1379                                     ORDER BY dateaccessioned DESC LIMIT $max";
1380
1381         my $dbh = C4::Context->dbh;
1382         my $sth = $dbh->prepare($query);
1383
1384     $sth->execute((@{$data->{branches}}, @{$data->{itemtypes}}));
1385
1386         my @results;
1387         while( my $row = $sth->fetchrow_hashref){
1388                 push @results, {date => $row->{dateaccessioned}
1389                                                 , biblionumber => $row->{biblionumber}
1390                                                 , title => $row->{title}};
1391         }
1392
1393         return @results;
1394 }
1395
1396 =head2 get_itemnumbers_of
1397
1398   my @itemnumbers_of = get_itemnumbers_of(@biblionumbers);
1399
1400 Given a list of biblionumbers, return the list of corresponding itemnumbers
1401 for each biblionumber.
1402
1403 Return a reference on a hash where keys are biblionumbers and values are
1404 references on array of itemnumbers.
1405
1406 =cut
1407
1408 sub get_itemnumbers_of {
1409     my @biblionumbers = @_;
1410
1411     my $dbh = C4::Context->dbh;
1412
1413     my $query = '
1414         SELECT itemnumber,
1415             biblionumber
1416         FROM items
1417         WHERE biblionumber IN (?' . ( ',?' x scalar @biblionumbers - 1 ) . ')
1418     ';
1419     my $sth = $dbh->prepare($query);
1420     $sth->execute(@biblionumbers);
1421
1422     my %itemnumbers_of;
1423
1424     while ( my ( $itemnumber, $biblionumber ) = $sth->fetchrow_array ) {
1425         push @{ $itemnumbers_of{$biblionumber} }, $itemnumber;
1426     }
1427
1428     return \%itemnumbers_of;
1429 }
1430
1431 =head2 GetItemnumberFromBarcode
1432
1433   $result = GetItemnumberFromBarcode($barcode);
1434
1435 =cut
1436
1437 sub GetItemnumberFromBarcode {
1438     my ($barcode) = @_;
1439     my $dbh = C4::Context->dbh;
1440
1441     my $rq =
1442       $dbh->prepare("SELECT itemnumber FROM items WHERE items.barcode=?");
1443     $rq->execute($barcode);
1444     my ($result) = $rq->fetchrow;
1445     return ($result);
1446 }
1447
1448 =head2 GetBarcodeFromItemnumber
1449
1450   $result = GetBarcodeFromItemnumber($itemnumber);
1451
1452 =cut
1453
1454 sub GetBarcodeFromItemnumber {
1455     my ($itemnumber) = @_;
1456     my $dbh = C4::Context->dbh;
1457
1458     my $rq =
1459       $dbh->prepare("SELECT barcode FROM items WHERE items.itemnumber=?");
1460     $rq->execute($itemnumber);
1461     my ($result) = $rq->fetchrow;
1462     return ($result);
1463 }
1464
1465 =head3 get_item_authorised_values
1466
1467 find the types and values for all authorised values assigned to this item.
1468
1469 parameters: itemnumber
1470
1471 returns: a hashref malling the authorised value to the value set for this itemnumber
1472
1473     $authorised_values = {
1474              'CCODE'      => undef,
1475              'DAMAGED'    => '0',
1476              'LOC'        => '3',
1477              'LOST'       => '0'
1478              'NOT_LOAN'   => '0',
1479              'RESTRICTED' => undef,
1480              'STACK'      => undef,
1481              'WITHDRAWN'  => '0',
1482              'branches'   => 'CPL',
1483              'cn_source'  => undef,
1484              'itemtypes'  => 'SER',
1485            };
1486
1487 Notes: see C4::Biblio::get_biblio_authorised_values for a similar method at the biblio level.
1488
1489 =cut
1490
1491 sub get_item_authorised_values {
1492     my $itemnumber = shift;
1493
1494     # assume that these entries in the authorised_value table are item level.
1495     my $query = q(SELECT distinct authorised_value, kohafield
1496                     FROM marc_subfield_structure
1497                     WHERE kohafield like 'item%'
1498                       AND authorised_value != '' );
1499
1500     my $itemlevel_authorised_values = C4::Context->dbh->selectall_hashref( $query, 'authorised_value' );
1501     my $iteminfo = GetItem( $itemnumber );
1502     # warn( Data::Dumper->Dump( [ $itemlevel_authorised_values ], [ 'itemlevel_authorised_values' ] ) );
1503     my $return;
1504     foreach my $this_authorised_value ( keys %$itemlevel_authorised_values ) {
1505         my $field = $itemlevel_authorised_values->{ $this_authorised_value }->{'kohafield'};
1506         $field =~ s/^items\.//;
1507         if ( exists $iteminfo->{ $field } ) {
1508             $return->{ $this_authorised_value } = $iteminfo->{ $field };
1509         }
1510     }
1511     # warn( Data::Dumper->Dump( [ $return ], [ 'return' ] ) );
1512     return $return;
1513 }
1514
1515 =head3 get_authorised_value_images
1516
1517 find a list of icons that are appropriate for display based on the
1518 authorised values for a biblio.
1519
1520 parameters: listref of authorised values, such as comes from
1521 get_item_authorised_values or
1522 from C4::Biblio::get_biblio_authorised_values
1523
1524 returns: listref of hashrefs for each image. Each hashref looks like this:
1525
1526       { imageurl => '/intranet-tmpl/prog/img/itemtypeimg/npl/WEB.gif',
1527         label    => '',
1528         category => '',
1529         value    => '', }
1530
1531 Notes: Currently, I put on the full path to the images on the staff
1532 side. This should either be configurable or not done at all. Since I
1533 have to deal with 'intranet' or 'opac' in
1534 get_biblio_authorised_values, perhaps I should be passing it in.
1535
1536 =cut
1537
1538 sub get_authorised_value_images {
1539     my $authorised_values = shift;
1540
1541     my @imagelist;
1542
1543     my $authorised_value_list = GetAuthorisedValues();
1544     # warn ( Data::Dumper->Dump( [ $authorised_value_list ], [ 'authorised_value_list' ] ) );
1545     foreach my $this_authorised_value ( @$authorised_value_list ) {
1546         if ( exists $authorised_values->{ $this_authorised_value->{'category'} }
1547              && $authorised_values->{ $this_authorised_value->{'category'} } eq $this_authorised_value->{'authorised_value'} ) {
1548             # warn ( Data::Dumper->Dump( [ $this_authorised_value ], [ 'this_authorised_value' ] ) );
1549             if ( defined $this_authorised_value->{'imageurl'} ) {
1550                 push @imagelist, { imageurl => C4::Koha::getitemtypeimagelocation( 'intranet', $this_authorised_value->{'imageurl'} ),
1551                                    label    => $this_authorised_value->{'lib'},
1552                                    category => $this_authorised_value->{'category'},
1553                                    value    => $this_authorised_value->{'authorised_value'}, };
1554             }
1555         }
1556     }
1557
1558     # warn ( Data::Dumper->Dump( [ \@imagelist ], [ 'imagelist' ] ) );
1559     return \@imagelist;
1560
1561 }
1562
1563 =head1 LIMITED USE FUNCTIONS
1564
1565 The following functions, while part of the public API,
1566 are not exported.  This is generally because they are
1567 meant to be used by only one script for a specific
1568 purpose, and should not be used in any other context
1569 without careful thought.
1570
1571 =cut
1572
1573 =head2 GetMarcItem
1574
1575   my $item_marc = GetMarcItem($biblionumber, $itemnumber);
1576
1577 Returns MARC::Record of the item passed in parameter.
1578 This function is meant for use only in C<cataloguing/additem.pl>,
1579 where it is needed to support that script's MARC-like
1580 editor.
1581
1582 =cut
1583
1584 sub GetMarcItem {
1585     my ( $biblionumber, $itemnumber ) = @_;
1586
1587     # GetMarcItem has been revised so that it does the following:
1588     #  1. Gets the item information from the items table.
1589     #  2. Converts it to a MARC field for storage in the bib record.
1590     #
1591     # The previous behavior was:
1592     #  1. Get the bib record.
1593     #  2. Return the MARC tag corresponding to the item record.
1594     #
1595     # The difference is that one treats the items row as authoritative,
1596     # while the other treats the MARC representation as authoritative
1597     # under certain circumstances.
1598
1599     my $itemrecord = GetItem($itemnumber);
1600
1601     # Tack on 'items.' prefix to column names so that TransformKohaToMarc will work.
1602     # Also, don't emit a subfield if the underlying field is blank.
1603
1604
1605     return Item2Marc($itemrecord,$biblionumber);
1606
1607 }
1608 sub Item2Marc {
1609         my ($itemrecord,$biblionumber)=@_;
1610     my $mungeditem = {
1611         map {
1612             defined($itemrecord->{$_}) && $itemrecord->{$_} ne '' ? ("items.$_" => $itemrecord->{$_}) : ()
1613         } keys %{ $itemrecord }
1614     };
1615     my $itemmarc = TransformKohaToMarc($mungeditem);
1616     my ( $itemtag, $itemsubfield ) = GetMarcFromKohaField("items.itemnumber",GetFrameworkCode($biblionumber)||'');
1617
1618     my $unlinked_item_subfields = _parse_unlinked_item_subfields_from_xml($mungeditem->{'items.more_subfields_xml'});
1619     if (defined $unlinked_item_subfields and $#$unlinked_item_subfields > -1) {
1620                 foreach my $field ($itemmarc->field($itemtag)){
1621             $field->add_subfields(@$unlinked_item_subfields);
1622         }
1623     }
1624         return $itemmarc;
1625 }
1626
1627 =head1 PRIVATE FUNCTIONS AND VARIABLES
1628
1629 The following functions are not meant to be called
1630 directly, but are documented in order to explain
1631 the inner workings of C<C4::Items>.
1632
1633 =cut
1634
1635 =head2 %derived_columns
1636
1637 This hash keeps track of item columns that
1638 are strictly derived from other columns in
1639 the item record and are not meant to be set
1640 independently.
1641
1642 Each key in the hash should be the name of a
1643 column (as named by TransformMarcToKoha).  Each
1644 value should be hashref whose keys are the
1645 columns on which the derived column depends.  The
1646 hashref should also contain a 'BUILDER' key
1647 that is a reference to a sub that calculates
1648 the derived value.
1649
1650 =cut
1651
1652 my %derived_columns = (
1653     'items.cn_sort' => {
1654         'itemcallnumber' => 1,
1655         'items.cn_source' => 1,
1656         'BUILDER' => \&_calc_items_cn_sort,
1657     }
1658 );
1659
1660 =head2 _set_derived_columns_for_add
1661
1662   _set_derived_column_for_add($item);
1663
1664 Given an item hash representing a new item to be added,
1665 calculate any derived columns.  Currently the only
1666 such column is C<items.cn_sort>.
1667
1668 =cut
1669
1670 sub _set_derived_columns_for_add {
1671     my $item = shift;
1672
1673     foreach my $column (keys %derived_columns) {
1674         my $builder = $derived_columns{$column}->{'BUILDER'};
1675         my $source_values = {};
1676         foreach my $source_column (keys %{ $derived_columns{$column} }) {
1677             next if $source_column eq 'BUILDER';
1678             $source_values->{$source_column} = $item->{$source_column};
1679         }
1680         $builder->($item, $source_values);
1681     }
1682 }
1683
1684 =head2 _set_derived_columns_for_mod
1685
1686   _set_derived_column_for_mod($item);
1687
1688 Given an item hash representing a new item to be modified.
1689 calculate any derived columns.  Currently the only
1690 such column is C<items.cn_sort>.
1691
1692 This routine differs from C<_set_derived_columns_for_add>
1693 in that it needs to handle partial item records.  In other
1694 words, the caller of C<ModItem> may have supplied only one
1695 or two columns to be changed, so this function needs to
1696 determine whether any of the columns to be changed affect
1697 any of the derived columns.  Also, if a derived column
1698 depends on more than one column, but the caller is not
1699 changing all of then, this routine retrieves the unchanged
1700 values from the database in order to ensure a correct
1701 calculation.
1702
1703 =cut
1704
1705 sub _set_derived_columns_for_mod {
1706     my $item = shift;
1707
1708     foreach my $column (keys %derived_columns) {
1709         my $builder = $derived_columns{$column}->{'BUILDER'};
1710         my $source_values = {};
1711         my %missing_sources = ();
1712         my $must_recalc = 0;
1713         foreach my $source_column (keys %{ $derived_columns{$column} }) {
1714             next if $source_column eq 'BUILDER';
1715             if (exists $item->{$source_column}) {
1716                 $must_recalc = 1;
1717                 $source_values->{$source_column} = $item->{$source_column};
1718             } else {
1719                 $missing_sources{$source_column} = 1;
1720             }
1721         }
1722         if ($must_recalc) {
1723             foreach my $source_column (keys %missing_sources) {
1724                 $source_values->{$source_column} = _get_single_item_column($source_column, $item->{'itemnumber'});
1725             }
1726             $builder->($item, $source_values);
1727         }
1728     }
1729 }
1730
1731 =head2 _do_column_fixes_for_mod
1732
1733   _do_column_fixes_for_mod($item);
1734
1735 Given an item hashref containing one or more
1736 columns to modify, fix up certain values.
1737 Specifically, set to 0 any passed value
1738 of C<notforloan>, C<damaged>, C<itemlost>, or
1739 C<wthdrawn> that is either undefined or
1740 contains the empty string.
1741
1742 =cut
1743
1744 sub _do_column_fixes_for_mod {
1745     my $item = shift;
1746
1747     if (exists $item->{'notforloan'} and
1748         (not defined $item->{'notforloan'} or $item->{'notforloan'} eq '')) {
1749         $item->{'notforloan'} = 0;
1750     }
1751     if (exists $item->{'damaged'} and
1752         (not defined $item->{'damaged'} or $item->{'damaged'} eq '')) {
1753         $item->{'damaged'} = 0;
1754     }
1755     if (exists $item->{'itemlost'} and
1756         (not defined $item->{'itemlost'} or $item->{'itemlost'} eq '')) {
1757         $item->{'itemlost'} = 0;
1758     }
1759     if (exists $item->{'wthdrawn'} and
1760         (not defined $item->{'wthdrawn'} or $item->{'wthdrawn'} eq '')) {
1761         $item->{'wthdrawn'} = 0;
1762     }
1763     if (exists $item->{'location'} && !exists $item->{'permanent_location'}) {
1764         $item->{'permanent_location'} = $item->{'location'};
1765     }
1766 }
1767
1768 =head2 _get_single_item_column
1769
1770   _get_single_item_column($column, $itemnumber);
1771
1772 Retrieves the value of a single column from an C<items>
1773 row specified by C<$itemnumber>.
1774
1775 =cut
1776
1777 sub _get_single_item_column {
1778     my $column = shift;
1779     my $itemnumber = shift;
1780
1781     my $dbh = C4::Context->dbh;
1782     my $sth = $dbh->prepare("SELECT $column FROM items WHERE itemnumber = ?");
1783     $sth->execute($itemnumber);
1784     my ($value) = $sth->fetchrow();
1785     return $value;
1786 }
1787
1788 =head2 _calc_items_cn_sort
1789
1790   _calc_items_cn_sort($item, $source_values);
1791
1792 Helper routine to calculate C<items.cn_sort>.
1793
1794 =cut
1795
1796 sub _calc_items_cn_sort {
1797     my $item = shift;
1798     my $source_values = shift;
1799
1800     $item->{'items.cn_sort'} = GetClassSort($source_values->{'items.cn_source'}, $source_values->{'itemcallnumber'}, "");
1801 }
1802
1803 =head2 _set_defaults_for_add
1804
1805   _set_defaults_for_add($item_hash);
1806
1807 Given an item hash representing an item to be added, set
1808 correct default values for columns whose default value
1809 is not handled by the DBMS.  This includes the following
1810 columns:
1811
1812 =over 2
1813
1814 =item *
1815
1816 C<items.dateaccessioned>
1817
1818 =item *
1819
1820 C<items.notforloan>
1821
1822 =item *
1823
1824 C<items.damaged>
1825
1826 =item *
1827
1828 C<items.itemlost>
1829
1830 =item *
1831
1832 C<items.wthdrawn>
1833
1834 =back
1835
1836 =cut
1837
1838 sub _set_defaults_for_add {
1839     my $item = shift;
1840     $item->{dateaccessioned} ||= C4::Dates->new->output('iso');
1841     $item->{$_} ||= 0 for (qw( notforloan damaged itemlost wthdrawn));
1842 }
1843
1844 =head2 _koha_new_item
1845
1846   my ($itemnumber,$error) = _koha_new_item( $item, $barcode );
1847
1848 Perform the actual insert into the C<items> table.
1849
1850 =cut
1851
1852 sub _koha_new_item {
1853     my ( $item, $barcode ) = @_;
1854     my $dbh=C4::Context->dbh;
1855     my $error;
1856     my $query =
1857            "INSERT INTO items SET
1858             biblionumber        = ?,
1859             biblioitemnumber    = ?,
1860             barcode             = ?,
1861             dateaccessioned     = ?,
1862             booksellerid        = ?,
1863             homebranch          = ?,
1864             price               = ?,
1865             replacementprice    = ?,
1866             replacementpricedate = NOW(),
1867             datelastborrowed    = ?,
1868             datelastseen        = NOW(),
1869             stack               = ?,
1870             notforloan          = ?,
1871             damaged             = ?,
1872             itemlost            = ?,
1873             wthdrawn            = ?,
1874             itemcallnumber      = ?,
1875             restricted          = ?,
1876             itemnotes           = ?,
1877             holdingbranch       = ?,
1878             paidfor             = ?,
1879             location            = ?,
1880             onloan              = ?,
1881             issues              = ?,
1882             renewals            = ?,
1883             reserves            = ?,
1884             cn_source           = ?,
1885             cn_sort             = ?,
1886             ccode               = ?,
1887             itype               = ?,
1888             materials           = ?,
1889             uri = ?,
1890             enumchron           = ?,
1891             more_subfields_xml  = ?,
1892             copynumber          = ?
1893           ";
1894     my $sth = $dbh->prepare($query);
1895    $sth->execute(
1896             $item->{'biblionumber'},
1897             $item->{'biblioitemnumber'},
1898             $barcode,
1899             $item->{'dateaccessioned'},
1900             $item->{'booksellerid'},
1901             $item->{'homebranch'},
1902             $item->{'price'},
1903             $item->{'replacementprice'},
1904             $item->{datelastborrowed},
1905             $item->{stack},
1906             $item->{'notforloan'},
1907             $item->{'damaged'},
1908             $item->{'itemlost'},
1909             $item->{'wthdrawn'},
1910             $item->{'itemcallnumber'},
1911             $item->{'restricted'},
1912             $item->{'itemnotes'},
1913             $item->{'holdingbranch'},
1914             $item->{'paidfor'},
1915             $item->{'location'},
1916             $item->{'onloan'},
1917             $item->{'issues'},
1918             $item->{'renewals'},
1919             $item->{'reserves'},
1920             $item->{'items.cn_source'},
1921             $item->{'items.cn_sort'},
1922             $item->{'ccode'},
1923             $item->{'itype'},
1924             $item->{'materials'},
1925             $item->{'uri'},
1926             $item->{'enumchron'},
1927             $item->{'more_subfields_xml'},
1928             $item->{'copynumber'},
1929     );
1930     my $itemnumber = $dbh->{'mysql_insertid'};
1931     if ( defined $sth->errstr ) {
1932         $error.="ERROR in _koha_new_item $query".$sth->errstr;
1933     }
1934     return ( $itemnumber, $error );
1935 }
1936
1937 =head2 MoveItemFromBiblio
1938
1939   MoveItemFromBiblio($itenumber, $frombiblio, $tobiblio);
1940
1941 Moves an item from a biblio to another
1942
1943 Returns undef if the move failed or the biblionumber of the destination record otherwise
1944
1945 =cut
1946
1947 sub MoveItemFromBiblio {
1948     my ($itemnumber, $frombiblio, $tobiblio) = @_;
1949     my $dbh = C4::Context->dbh;
1950     my $sth = $dbh->prepare("SELECT biblioitemnumber FROM biblioitems WHERE biblionumber = ?");
1951     $sth->execute( $tobiblio );
1952     my ( $tobiblioitem ) = $sth->fetchrow();
1953     $sth = $dbh->prepare("UPDATE items SET biblioitemnumber = ?, biblionumber = ? WHERE itemnumber = ? AND biblionumber = ?");
1954     my $return = $sth->execute($tobiblioitem, $tobiblio, $itemnumber, $frombiblio);
1955     if ($return == 1) {
1956
1957         # Getting framework
1958         my $frameworkcode = GetFrameworkCode($frombiblio);
1959
1960         # Getting marc field for itemnumber
1961         my ($itemtag, $itemsubfield) = GetMarcFromKohaField('items.itemnumber', $frameworkcode);
1962
1963         # Getting the record we want to move the item from
1964         my $record = GetMarcBiblio($frombiblio);
1965
1966         # The item we want to move
1967         my $item;
1968
1969         # For each item
1970         foreach my $fielditem ($record->field($itemtag)){
1971                 # If it is the item we want to move
1972                 if ($fielditem->subfield($itemsubfield) == $itemnumber) {
1973                     # We save it
1974                     $item = $fielditem;
1975                     # Then delete it from the record
1976                     $record->delete_field($fielditem)
1977                 }
1978         }
1979
1980         # If we found an item (should always true, except in case of database-marcxml inconsistency)
1981         if ($item) {
1982
1983             # Checking if the item we want to move is in an order
1984             my $order = GetOrderFromItemnumber($itemnumber);
1985             if ($order) {
1986                 # Replacing the biblionumber within the order if necessary
1987                 $order->{'biblionumber'} = $tobiblio;
1988                 ModOrder($order);
1989             }
1990
1991             # Saving the modification
1992             ModBiblioMarc($record, $frombiblio, $frameworkcode);
1993
1994             # Getting the record we want to move the item to
1995             $record = GetMarcBiblio($tobiblio);
1996
1997             # Inserting the previously saved item
1998             $record->insert_fields_ordered($item);
1999
2000             # Saving the modification
2001             ModBiblioMarc($record, $tobiblio, $frameworkcode);
2002
2003         } else {
2004             return undef;
2005         }
2006     } else {
2007         return undef;
2008     }
2009 }
2010
2011 =head2 DelItemCheck
2012
2013    DelItemCheck($dbh, $biblionumber, $itemnumber);
2014
2015 Exported function (core API) for deleting an item record in Koha if there no current issue.
2016
2017 =cut
2018
2019 sub DelItemCheck {
2020     my ( $dbh, $biblionumber, $itemnumber ) = @_;
2021     my $error;
2022
2023     # check that there is no issue on this item before deletion.
2024     my $sth=$dbh->prepare("select * from issues i where i.itemnumber=?");
2025     $sth->execute($itemnumber);
2026
2027     my $onloan=$sth->fetchrow;
2028
2029     if ($onloan){
2030         $error = "book_on_loan"
2031     }else{
2032         # check it doesnt have a waiting reserve
2033         $sth=$dbh->prepare("SELECT * FROM reserves WHERE (found = 'W' or found = 'T') AND itemnumber = ?");
2034         $sth->execute($itemnumber);
2035         my $reserve=$sth->fetchrow;
2036         if ($reserve){
2037             $error = "book_reserved";
2038         }else{
2039             DelItem($dbh, $biblionumber, $itemnumber);
2040             return 1;
2041         }
2042     }
2043     return $error;
2044 }
2045
2046 =head2 _koha_modify_item
2047
2048   my ($itemnumber,$error) =_koha_modify_item( $item );
2049
2050 Perform the actual update of the C<items> row.  Note that this
2051 routine accepts a hashref specifying the columns to update.
2052
2053 =cut
2054
2055 sub _koha_modify_item {
2056     my ( $item ) = @_;
2057     my $dbh=C4::Context->dbh;
2058     my $error;
2059
2060     my $query = "UPDATE items SET ";
2061     my @bind;
2062     for my $key ( keys %$item ) {
2063         $query.="$key=?,";
2064         push @bind, $item->{$key};
2065     }
2066     $query =~ s/,$//;
2067     $query .= " WHERE itemnumber=?";
2068     push @bind, $item->{'itemnumber'};
2069     my $sth = C4::Context->dbh->prepare($query);
2070     $sth->execute(@bind);
2071     if ( C4::Context->dbh->errstr ) {
2072         $error.="ERROR in _koha_modify_item $query".$dbh->errstr;
2073         warn $error;
2074     }
2075     return ($item->{'itemnumber'},$error);
2076 }
2077
2078 =head2 _koha_delete_item
2079
2080   _koha_delete_item( $dbh, $itemnum );
2081
2082 Internal function to delete an item record from the koha tables
2083
2084 =cut
2085
2086 sub _koha_delete_item {
2087     my ( $dbh, $itemnum ) = @_;
2088
2089     # save the deleted item to deleteditems table
2090     my $sth = $dbh->prepare("SELECT * FROM items WHERE itemnumber=?");
2091     $sth->execute($itemnum);
2092     my $data = $sth->fetchrow_hashref();
2093     my $query = "INSERT INTO deleteditems SET ";
2094     my @bind  = ();
2095     foreach my $key ( keys %$data ) {
2096         $query .= "$key = ?,";
2097         push( @bind, $data->{$key} );
2098     }
2099     $query =~ s/\,$//;
2100     $sth = $dbh->prepare($query);
2101     $sth->execute(@bind);
2102
2103     # delete from items table
2104     $sth = $dbh->prepare("DELETE FROM items WHERE itemnumber=?");
2105     $sth->execute($itemnum);
2106     return undef;
2107 }
2108
2109 =head2 _marc_from_item_hash
2110
2111   my $item_marc = _marc_from_item_hash($item, $frameworkcode[, $unlinked_item_subfields]);
2112
2113 Given an item hash representing a complete item record,
2114 create a C<MARC::Record> object containing an embedded
2115 tag representing that item.
2116
2117 The third, optional parameter C<$unlinked_item_subfields> is
2118 an arrayref of subfields (not mapped to C<items> fields per the
2119 framework) to be added to the MARC representation
2120 of the item.
2121
2122 =cut
2123
2124 sub _marc_from_item_hash {
2125     my $item = shift;
2126     my $frameworkcode = shift;
2127     my $unlinked_item_subfields;
2128     if (@_) {
2129         $unlinked_item_subfields = shift;
2130     }
2131
2132     # Tack on 'items.' prefix to column names so lookup from MARC frameworks will work
2133     # Also, don't emit a subfield if the underlying field is blank.
2134     my $mungeditem = { map {  (defined($item->{$_}) and $item->{$_} ne '') ?
2135                                 (/^items\./ ? ($_ => $item->{$_}) : ("items.$_" => $item->{$_}))
2136                                 : ()  } keys %{ $item } };
2137
2138     my $item_marc = MARC::Record->new();
2139     foreach my $item_field (keys %{ $mungeditem }) {
2140         my ($tag, $subfield) = GetMarcFromKohaField($item_field, $frameworkcode);
2141         next unless defined $tag and defined $subfield; # skip if not mapped to MARC field
2142         if (my $field = $item_marc->field($tag)) {
2143             $field->add_subfields($subfield => $mungeditem->{$item_field});
2144         } else {
2145             my $add_subfields = [];
2146             if (defined $unlinked_item_subfields and ref($unlinked_item_subfields) eq 'ARRAY' and $#$unlinked_item_subfields > -1) {
2147                 $add_subfields = $unlinked_item_subfields;
2148             }
2149             $item_marc->add_fields( $tag, " ", " ", $subfield =>  $mungeditem->{$item_field}, @$add_subfields);
2150         }
2151     }
2152
2153     return $item_marc;
2154 }
2155
2156 =head2 _add_item_field_to_biblio
2157
2158   _add_item_field_to_biblio($item_marc, $biblionumber, $frameworkcode);
2159
2160 Adds the fields from a MARC record containing the
2161 representation of a Koha item record to the MARC
2162 biblio record.  The input C<$item_marc> record
2163 is expect to contain just one field, the embedded
2164 item information field.
2165
2166 =cut
2167
2168 sub _add_item_field_to_biblio {
2169     my ($item_marc, $biblionumber, $frameworkcode) = @_;
2170
2171     my $biblio_marc = GetMarcBiblio($biblionumber);
2172     foreach my $field ($item_marc->fields()) {
2173         $biblio_marc->append_fields($field);
2174     }
2175
2176     ModBiblioMarc($biblio_marc, $biblionumber, $frameworkcode);
2177 }
2178
2179 =head2 _replace_item_field_in_biblio
2180
2181   &_replace_item_field_in_biblio($item_marc, $biblionumber, $itemnumber, $frameworkcode)
2182
2183 Given a MARC::Record C<$item_marc> containing one tag with the MARC
2184 representation of the item, examine the biblio MARC
2185 for the corresponding tag for that item and
2186 replace it with the tag from C<$item_marc>.
2187
2188 =cut
2189
2190 sub _replace_item_field_in_biblio {
2191     my ($ItemRecord, $biblionumber, $itemnumber, $frameworkcode) = @_;
2192     my $dbh = C4::Context->dbh;
2193
2194     # get complete MARC record & replace the item field by the new one
2195     my $completeRecord = GetMarcBiblio($biblionumber);
2196     my ($itemtag,$itemsubfield) = GetMarcFromKohaField("items.itemnumber",$frameworkcode);
2197     my $itemField = $ItemRecord->field($itemtag);
2198     my @items = $completeRecord->field($itemtag);
2199     my $found = 0;
2200     foreach (@items) {
2201         if ($_->subfield($itemsubfield) eq $itemnumber) {
2202             $_->replace_with($itemField);
2203             $found = 1;
2204         }
2205     }
2206
2207     unless ($found) {
2208         # If we haven't found the matching field,
2209         # just add it.  However, this means that
2210         # there is likely a bug.
2211         $completeRecord->append_fields($itemField);
2212     }
2213
2214     # save the record
2215     ModBiblioMarc($completeRecord, $biblionumber, $frameworkcode);
2216 }
2217
2218 =head2 _repack_item_errors
2219
2220 Add an error message hash generated by C<CheckItemPreSave>
2221 to a list of errors.
2222
2223 =cut
2224
2225 sub _repack_item_errors {
2226     my $item_sequence_num = shift;
2227     my $item_ref = shift;
2228     my $error_ref = shift;
2229
2230     my @repacked_errors = ();
2231
2232     foreach my $error_code (sort keys %{ $error_ref }) {
2233         my $repacked_error = {};
2234         $repacked_error->{'item_sequence'} = $item_sequence_num;
2235         $repacked_error->{'item_barcode'} = exists($item_ref->{'barcode'}) ? $item_ref->{'barcode'} : '';
2236         $repacked_error->{'error_code'} = $error_code;
2237         $repacked_error->{'error_information'} = $error_ref->{$error_code};
2238         push @repacked_errors, $repacked_error;
2239     }
2240
2241     return @repacked_errors;
2242 }
2243
2244 =head2 _get_unlinked_item_subfields
2245
2246   my $unlinked_item_subfields = _get_unlinked_item_subfields($original_item_marc, $frameworkcode);
2247
2248 =cut
2249
2250 sub _get_unlinked_item_subfields {
2251     my $original_item_marc = shift;
2252     my $frameworkcode = shift;
2253
2254     my $marcstructure = GetMarcStructure(1, $frameworkcode);
2255
2256     # assume that this record has only one field, and that that
2257     # field contains only the item information
2258     my $subfields = [];
2259     my @fields = $original_item_marc->fields();
2260     if ($#fields > -1) {
2261         my $field = $fields[0];
2262             my $tag = $field->tag();
2263         foreach my $subfield ($field->subfields()) {
2264             if (defined $subfield->[1] and
2265                 $subfield->[1] ne '' and
2266                 !$marcstructure->{$tag}->{$subfield->[0]}->{'kohafield'}) {
2267                 push @$subfields, $subfield->[0] => $subfield->[1];
2268             }
2269         }
2270     }
2271     return $subfields;
2272 }
2273
2274 =head2 _get_unlinked_subfields_xml
2275
2276   my $unlinked_subfields_xml = _get_unlinked_subfields_xml($unlinked_item_subfields);
2277
2278 =cut
2279
2280 sub _get_unlinked_subfields_xml {
2281     my $unlinked_item_subfields = shift;
2282
2283     my $xml;
2284     if (defined $unlinked_item_subfields and ref($unlinked_item_subfields) eq 'ARRAY' and $#$unlinked_item_subfields > -1) {
2285         my $marc = MARC::Record->new();
2286         # use of tag 999 is arbitrary, and doesn't need to match the item tag
2287         # used in the framework
2288         $marc->append_fields(MARC::Field->new('999', ' ', ' ', @$unlinked_item_subfields));
2289         $marc->encoding("UTF-8");
2290         $xml = $marc->as_xml("USMARC");
2291     }
2292
2293     return $xml;
2294 }
2295
2296 =head2 _parse_unlinked_item_subfields_from_xml
2297
2298   my $unlinked_item_subfields = _parse_unlinked_item_subfields_from_xml($whole_item->{'more_subfields_xml'}):
2299
2300 =cut
2301
2302 sub  _parse_unlinked_item_subfields_from_xml {
2303     my $xml = shift;
2304
2305     return unless defined $xml and $xml ne "";
2306     my $marc = MARC::Record->new_from_xml(StripNonXmlChars($xml),'UTF-8');
2307     my $unlinked_subfields = [];
2308     my @fields = $marc->fields();
2309     if ($#fields > -1) {
2310         foreach my $subfield ($fields[0]->subfields()) {
2311             push @$unlinked_subfields, $subfield->[0] => $subfield->[1];
2312         }
2313     }
2314     return $unlinked_subfields;
2315 }
2316
2317 1;