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#!/usr/bin/perl
# Copyright 2000-2002 Katipo Communications
#
# This file is part of Koha.
#
# Koha is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# Koha is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Koha; if not, see <http://www.gnu.org/licenses>.
use CGI qw ( -utf8 );
use Modern::Perl;
use C4::Auth;
use C4::Output;
use C4::Biblio;
use C4::Items;
use C4::Circulation;
use C4::Context;
use C4::Koha;
use C4::BackgroundJob;
use C4::ClassSource;
use C4::Debug;
use C4::Members;
use MARC::File::XML;
use List::MoreUtils qw/uniq/;
use Koha::Biblios;
use Koha::DateUtils;
use Koha::Items;
use Koha::ItemTypes;
use Koha::Patrons;
my $input = new CGI;
my $dbh = C4::Context->dbh;
my $error = $input->param('error');
my @itemnumbers = $input->multi_param('itemnumber');
my $biblionumber = $input->param('biblionumber');
my $op = $input->param('op');
my $del = $input->param('del');
my $del_records = $input->param('del_records');
my $completedJobID = $input->param('completedJobID');
my $runinbackground = $input->param('runinbackground');
my $src = $input->param('src');
my $use_default_values = $input->param('use_default_values');
my $template_name;
my $template_flag;
if (!defined $op) {
$template_name = "tools/batchMod.tt";
$template_flag = { tools => '*' };
$op = q{};
} else {
$template_name = ($del) ? "tools/batchMod-del.tt" : "tools/batchMod-edit.tt";
$template_flag = ($del) ? { tools => 'items_batchdel' } : { tools => 'items_batchmod' };
}
my ($template, $loggedinuser, $cookie)
= get_template_and_user({template_name => $template_name,
query => $input,
type => "intranet",
authnotrequired => 0,
flagsrequired => $template_flag,
});
# Does the user have a restricted item edition permission?
my $uid = $loggedinuser ? Koha::Patrons->find( $loggedinuser )->userid : undef;
my $restrictededition = $uid ? haspermission($uid, {'tools' => 'items_batchmod_restricted'}) : undef;
# In case user is a superlibrarian, edition is not restricted
$restrictededition = 0 if ($restrictededition != 0 && C4::Context->IsSuperLibrarian());
$template->param(del => $del);
my $itemrecord;
my $nextop="";
my @errors; # store errors found while checking data BEFORE saving item.
my $items_display_hashref;
our $tagslib = &GetMarcStructure(1);
my $deleted_items = 0; # Number of deleted items
my $deleted_records = 0; # Number of deleted records ( with no items attached )
my $not_deleted_items = 0; # Number of items that could not be deleted
my @not_deleted; # List of the itemnumbers that could not be deleted
my $modified_items = 0; # Numbers of modified items
my $modified_fields = 0; # Numbers of modified fields
my %cookies = parse CGI::Cookie($cookie);
my $sessionID = $cookies{'CGISESSID'}->value;
#--- ----------------------------------------------------------------------------
if ($op eq "action") {
#-------------------------------------------------------------------------------
my @tags = $input->multi_param('tag');
my @subfields = $input->multi_param('subfield');
my @values = $input->multi_param('field_value');
my @disabled = $input->multi_param('disable_input');
# build indicator hash.
my @ind_tag = $input->multi_param('ind_tag');
my @indicator = $input->multi_param('indicator');
# Is there something to modify ?
# TODO : We shall use this var to warn the user in case no modification was done to the items
my $values_to_modify = scalar(grep {!/^$/} @values);
my $values_to_blank = scalar(@disabled);
my $marcitem;
# Once the job is done
if ($completedJobID) {
# If we have a reasonable amount of items, we display them
if (scalar(@itemnumbers) <= ( C4::Context->preference("MaxItemsToDisplayForBatchDel") // 1000 ) ) {
$items_display_hashref=BuildItemsData(@itemnumbers);
} else {
# Else, we only display the barcode
my @simple_items_display = map {
my $itemnumber = $_;
my $item = Koha::Items->find($itemnumber);
{
itemnumber => $itemnumber,
barcode => $item ? ( $item->barcode // q{} ) : q{},
biblionumber => $item ? $item->biblio->biblionumber : q{},
};
} @itemnumbers;
$template->param("simple_items_display" => \@simple_items_display);
}
# Setting the job as done
my $job = C4::BackgroundJob->fetch($sessionID, $completedJobID);
# Calling the template
add_saved_job_results_to_template($template, $completedJobID);
} else {
# While the job is getting done
# Job size is the number of items we have to process
my $job_size = scalar(@itemnumbers);
my $job = undef;
# If we asked for background processing
if ($runinbackground) {
$job = put_in_background($job_size);
}
#initializing values for updates
my ( $itemtagfield, $itemtagsubfield) = &GetMarcFromKohaField("items.itemnumber", "");
if ($values_to_modify){
my $xml = TransformHtmlToXml(\@tags,\@subfields,\@values,\@indicator,\@ind_tag, 'ITEM');
$marcitem = MARC::Record::new_from_xml($xml, 'UTF-8');
}
if ($values_to_blank){
foreach my $disabledsubf (@disabled){
if ($marcitem && $marcitem->field($itemtagfield)){
$marcitem->field($itemtagfield)->update( $disabledsubf => "" );
}
else {
$marcitem = MARC::Record->new();
$marcitem->append_fields( MARC::Field->new( $itemtagfield, '', '', $disabledsubf => "" ) );
}
}
}
# For each item
my $i = 1;
foreach my $itemnumber(@itemnumbers){
$job->progress($i) if $runinbackground;
my $itemdata = GetItem($itemnumber);
if ( $del ){
my $return = DelItemCheck( $itemdata->{'biblionumber'}, $itemdata->{'itemnumber'});
if ($return == 1) {
$deleted_items++;
} else {
$not_deleted_items++;
push @not_deleted,
{ biblionumber => $itemdata->{'biblionumber'},
itemnumber => $itemdata->{'itemnumber'},
barcode => $itemdata->{'barcode'},
title => $itemdata->{'title'},
$return => 1
};
}
# If there are no items left, delete the biblio
if ( $del_records ) {
my $itemscount = Koha::Biblios->find( $itemdata->{'biblionumber'} )->items->count;
if ( $itemscount == 0 ) {
my $error = DelBiblio($itemdata->{'biblionumber'});
$deleted_records++ unless ( $error );
}
}
} else {
if ($values_to_modify || $values_to_blank) {
my $localmarcitem = Item2Marc($itemdata);
my $modified = UpdateMarcWith( $marcitem, $localmarcitem );
if ( $modified ) {
eval {
if ( my $item = ModItemFromMarc( $localmarcitem, $itemdata->{biblionumber}, $itemnumber ) ) {
LostItem($itemnumber, 'batchmod') if $item->{itemlost} and not $itemdata->{itemlost};
}
};
}
if ( $runinbackground ) {
$modified_items++ if $modified;
$modified_fields += $modified;
$job->set({
modified_items => $modified_items,
modified_fields => $modified_fields,
});
}
}
}
$i++;
}
}
}
#
#-------------------------------------------------------------------------------
# build screen with existing items. and "new" one
#-------------------------------------------------------------------------------
if ($op eq "show"){
my $filefh = $input->upload('uploadfile');
my $filecontent = $input->param('filecontent');
my ( @notfoundbarcodes, @notfounditemnumbers);
my @contentlist;
if ($filefh){
binmode $filefh, ':encoding(UTF-8)';
while (my $content=<$filefh>){
$content =~ s/[\r\n]*$//;
push @contentlist, $content if $content;
}
@contentlist = uniq @contentlist;
if ($filecontent eq 'barcode_file') {
my $existing_items = Koha::Items->search({ itemnumber => \@contentlist });
@itemnumbers = $existing_items->get_column('itemnumber');
my %exists = map {$_=>1} @{$existing_items->get_column('barcode')};
@notfoundbarcodes = grep { !$exists{$_} } @contentlist;
}
elsif ( $filecontent eq 'itemid_file') {
@itemnumbers = Koha::Items->search({ itemnumber => \@contentlist })->get_column('itemnumber');
my %exists = map {$_=>1} @itemnumbers;
@notfounditemnumbers = grep { !$exists{$_} } @contentlist;
}
} else {
if (defined $biblionumber){
my @all_items = GetItemsInfo( $biblionumber );
foreach my $itm (@all_items) {
push @itemnumbers, $itm->{itemnumber};
}
}
if ( my $list=$input->param('barcodelist')){
push my @barcodelist, uniq( split(/\s\n/, $list) );
my $existing_items = Koha::Items->search({ barcode => \@barcodelist });
@itemnumbers = $existing_items->get_column('itemnumber');
my %exists = map {$_=>1} @{$existing_items->get_column('barcode')};
@notfoundbarcodes = grep { !$exists{$_} } @barcodelist;
}
}
# Flag to tell the template there are valid results, hidden or not
if(scalar(@itemnumbers) > 0){ $template->param("itemresults" => 1); }
# Only display the items if there are no more than pref MaxItemsToProcessForBatchMod or MaxItemsToDisplayForBatchDel
my $max_items = $del
? C4::Context->preference("MaxItemsToDisplayForBatchDel")
: C4::Context->preference("MaxItemsToProcessForBatchMod");
if (scalar(@itemnumbers) <= ( $max_items // 1000 ) ) {
$items_display_hashref=BuildItemsData(@itemnumbers);
} else {
$template->param("too_many_items" => scalar(@itemnumbers));
# Even if we do not display the items, we need the itemnumbers
$template->param(itemnumbers_array => \@itemnumbers);
}
# now, build the item form for entering a new item
my @loop_data =();
my $i=0;
my $branch_limit = C4::Context->userenv ? C4::Context->userenv->{"branch"} : "";
my $query = qq{SELECT authorised_value, lib FROM authorised_values};
$query .= qq{ LEFT JOIN authorised_values_branches ON ( id = av_id ) } if $branch_limit;
$query .= qq{ WHERE category = ?};
$query .= qq{ AND ( branchcode = ? OR branchcode IS NULL ) } if $branch_limit;
$query .= qq{ GROUP BY lib ORDER BY lib, lib_opac};
my $authorised_values_sth = $dbh->prepare( $query );
my $libraries = Koha::Libraries->search({}, { order_by => ['branchname'] })->unblessed;# build once ahead of time, instead of multiple times later.
# Adding a default choice, in case the user does not want to modify the branch
my $nochange_branch = { branchname => '', value => '', selected => 1 };
unshift (@$libraries, $nochange_branch);
my $pref_itemcallnumber = C4::Context->preference('itemcallnumber');
# Getting list of subfields to keep when restricted batchmod edit is enabled
my $subfieldsToAllowForBatchmod = C4::Context->preference('SubfieldsToAllowForRestrictedBatchmod');
my $allowAllSubfields = (
not defined $subfieldsToAllowForBatchmod
or $subfieldsToAllowForBatchmod eq q||
) ? 1 : 0;
my @subfieldsToAllow = split(/ /, $subfieldsToAllowForBatchmod);
foreach my $tag (sort keys %{$tagslib}) {
# loop through each subfield
foreach my $subfield (sort keys %{$tagslib->{$tag}}) {
next if IsMarcStructureInternal( $tagslib->{$tag}{$subfield} );
next if (not $allowAllSubfields and $restrictededition && !grep { $tag . '$' . $subfield eq $_ } @subfieldsToAllow );
next if ($tagslib->{$tag}->{$subfield}->{'tab'} ne "10");
# barcode and stocknumber are not meant to be batch-modified
next if $tagslib->{$tag}->{$subfield}->{'kohafield'} eq 'items.barcode';
next if $tagslib->{$tag}->{$subfield}->{'kohafield'} eq 'items.stocknumber';
my %subfield_data;
my $index_subfield = int(rand(1000000));
if ($subfield eq '@'){
$subfield_data{id} = "tag_".$tag."_subfield_00_".$index_subfield;
} else {
$subfield_data{id} = "tag_".$tag."_subfield_".$subfield."_".$index_subfield;
}
$subfield_data{tag} = $tag;
$subfield_data{subfield} = $subfield;
$subfield_data{marc_lib} ="<span id=\"error$i\" title=\"".$tagslib->{$tag}->{$subfield}->{lib}."\">".$tagslib->{$tag}->{$subfield}->{lib}."</span>";
$subfield_data{mandatory} = $tagslib->{$tag}->{$subfield}->{mandatory};
$subfield_data{repeatable} = $tagslib->{$tag}->{$subfield}->{repeatable};
my ($x,$value);
$value =~ s/"/&quot;/g;
if ( !$value && $use_default_values) {
$value = $tagslib->{$tag}->{$subfield}->{defaultvalue};
# get today date & replace YYYY, MM, DD if provided in the default value
my $today = dt_from_string;
my $year = $today->year;
my $month = $today->month;
my $day = $today->day;
$value =~ s/YYYY/$year/g;
$value =~ s/MM/$month/g;
$value =~ s/DD/$day/g;
}
$subfield_data{visibility} = "display:none;" if (($tagslib->{$tag}->{$subfield}->{hidden} > 4) || ($tagslib->{$tag}->{$subfield}->{hidden} < -4));
# testing branch value if IndependentBranches.
if ( $tagslib->{$tag}->{$subfield}->{authorised_value} ) {
my @authorised_values;
my %authorised_lib;
# builds list, depending on authorised value...
if ( $tagslib->{$tag}->{$subfield}->{authorised_value} eq "branches" ) {
foreach my $library (@$libraries) {
push @authorised_values, $library->{branchcode};
$authorised_lib{$library->{branchcode}} = $library->{branchname};
}
$value = "";
}
elsif ( $tagslib->{$tag}->{$subfield}->{authorised_value} eq "itemtypes" ) {
push @authorised_values, "";
my $itemtypes = Koha::ItemTypes->search_with_localization;
while ( my $itemtype = $itemtypes->next ) {
push @authorised_values, $itemtype->itemtype;
$authorised_lib{$itemtype->itemtype} = $itemtype->translated_description;
}
$value = "";
#---- class_sources
}
elsif ( $tagslib->{$tag}->{$subfield}->{authorised_value} eq "cn_source" ) {
push @authorised_values, "" unless ( $tagslib->{$tag}->{$subfield}->{mandatory} );
my $class_sources = GetClassSources();
my $default_source = C4::Context->preference("DefaultClassificationSource");
foreach my $class_source (sort keys %$class_sources) {
next unless $class_sources->{$class_source}->{'used'} or
($value and $class_source eq $value) or
($class_source eq $default_source);
push @authorised_values, $class_source;
$authorised_lib{$class_source} = $class_sources->{$class_source}->{'description'};
}
$value = '';
#---- "true" authorised value
}
else {
push @authorised_values, ""; # unless ( $tagslib->{$tag}->{$subfield}->{mandatory} );
$authorised_values_sth->execute( $tagslib->{$tag}->{$subfield}->{authorised_value}, $branch_limit ? $branch_limit : () );
while ( my ( $value, $lib ) = $authorised_values_sth->fetchrow_array ) {
push @authorised_values, $value;
$authorised_lib{$value} = $lib;
}
$value="";
}
$subfield_data{marc_value} = {
type => 'select',
id => "tag_".$tag."_subfield_".$subfield."_".$index_subfield,
name => "field_value",
values => \@authorised_values,
labels => \%authorised_lib,
default => $value,
};
# it's a thesaurus / authority field
}
elsif ( $tagslib->{$tag}->{$subfield}->{authtypecode} ) {
$subfield_data{marc_value} = {
type => 'text1',
id => $subfield_data{id},
value => $value,
authtypecode => $tagslib->{$tag}->{$subfield}->{authtypecode},
}
}
elsif ( $tagslib->{$tag}->{$subfield}->{value_builder} ) { # plugin
require Koha::FrameworkPlugin;
my $plugin = Koha::FrameworkPlugin->new( {
name => $tagslib->{$tag}->{$subfield}->{'value_builder'},
item_style => 1,
});
my $temp;
my $pars= { dbh => $dbh, record => $temp, tagslib => $tagslib,
id => $subfield_data{id}, tabloop => \@loop_data };
$plugin->build( $pars );
if( !$plugin->errstr ) {
$subfield_data{marc_value} = {
type => 'text2',
id => $subfield_data{id},
value => $value,
javascript => $plugin->javascript,
noclick => $plugin->noclick,
};
} else {
warn $plugin->errstr;
$subfield_data{marc_value} = { # supply default input form
type => 'text',
id => $subfield_data{id},
value => $value,
};
}
}
elsif ( $tag eq '' ) { # it's an hidden field
$subfield_data{marc_value} = {
type => 'hidden',
id => $subfield_data{id},
value => $value,
};
}
elsif ( $tagslib->{$tag}->{$subfield}->{'hidden'} ) { # FIXME: shouldn't input type be "hidden" ?
$subfield_data{marc_value} = {
type => 'text',
id => $subfield_data{id},
value => $value,
};
}
elsif ( length($value) > 100
or (C4::Context->preference("marcflavour") eq "UNIMARC" and
300 <= $tag && $tag < 400 && $subfield eq 'a' )
or (C4::Context->preference("marcflavour") eq "MARC21" and
500 <= $tag && $tag < 600 )
) {
# oversize field (textarea)
$subfield_data{marc_value} = {
type => 'textarea',
id => $subfield_data{id},
value => $value,
};
} else {
# it's a standard field
$subfield_data{marc_value} = {
type => 'text',
id => $subfield_data{id},
value => $value,
};
}
# $subfield_data{marc_value}="<input type=\"text\" name=\"field_value\">";
push (@loop_data, \%subfield_data);
$i++
}
} # -- End foreach tag
$authorised_values_sth->finish;
# what's the next op ? it's what we are not in : an add if we're editing, otherwise, and edit.
$template->param(
item => \@loop_data,
notfoundbarcodes => \@notfoundbarcodes,
notfounditemnumbers => \@notfounditemnumbers
);
$nextop="action"
} # -- End action="show"
$template->param(%$items_display_hashref) if $items_display_hashref;
$template->param(
op => $nextop,
);
$template->param( $op => 1 ) if $op;
if ($op eq "action") {
#my @not_deleted_loop = map{{itemnumber=>$_}}@not_deleted;
$template->param(
not_deleted_items => $not_deleted_items,
deleted_items => $deleted_items,
delete_records => $del_records,
deleted_records => $deleted_records,
not_deleted_loop => \@not_deleted
);
}
foreach my $error (@errors) {
$template->param($error => 1) if $error;
}
$template->param(src => $src);
$template->param(biblionumber => $biblionumber);
output_html_with_http_headers $input, $cookie, $template->output;
exit;
# ---------------- Functions
sub BuildItemsData{
my @itemnumbers=@_;
# now, build existiing item list
my %witness; #---- stores the list of subfields used at least once, with the "meaning" of the code
my @big_array;
#---- finds where items.itemnumber is stored
my ( $itemtagfield, $itemtagsubfield) = &GetMarcFromKohaField("items.itemnumber", "");
my ($branchtagfield, $branchtagsubfield) = &GetMarcFromKohaField("items.homebranch", "");
foreach my $itemnumber (@itemnumbers){
my $itemdata=GetItem($itemnumber);
my $itemmarc=Item2Marc($itemdata);
my %this_row;
foreach my $field (grep {$_->tag() eq $itemtagfield} $itemmarc->fields()) {
# loop through each subfield
my $itembranchcode=$field->subfield($branchtagsubfield);
if ($itembranchcode && C4::Context->preference("IndependentBranches")) {
#verifying rights
my $userenv = C4::Context->userenv();
unless (C4::Context->IsSuperLibrarian() or (($userenv->{'branch'} eq $itembranchcode))){
$this_row{'nomod'}=1;
}
}
my $tag=$field->tag();
foreach my $subfield ($field->subfields) {
my ($subfcode,$subfvalue)=@$subfield;
next if ($tagslib->{$tag}->{$subfcode}->{tab} ne 10
&& $tag ne $itemtagfield
&& $subfcode ne $itemtagsubfield);
$witness{$subfcode} = $tagslib->{$tag}->{$subfcode}->{lib} if ($tagslib->{$tag}->{$subfcode}->{tab} eq 10);
if ($tagslib->{$tag}->{$subfcode}->{tab} eq 10) {
$this_row{$subfcode}=GetAuthorisedValueDesc( $tag,
$subfcode, $subfvalue, '', $tagslib)
|| $subfvalue;
}
$this_row{itemnumber} = $subfvalue if ($tag eq $itemtagfield && $subfcode eq $itemtagsubfield);
}
}
# grab title, author, and ISBN to identify bib that the item
# belongs to in the display
my $biblio = Koha::Biblios->find( $itemdata->{biblionumber} );
$this_row{title} = $biblio->title;
$this_row{author} = $biblio->author;
$this_row{isbn} = $biblio->biblioitem->isbn;
$this_row{biblionumber} = $biblio->biblionumber;
if (%this_row) {
push(@big_array, \%this_row);
}
}
@big_array = sort {$a->{0} cmp $b->{0}} @big_array;
# now, construct template !
# First, the existing items for display
my @item_value_loop;
my @witnesscodessorted=sort keys %witness;
for my $row ( @big_array ) {
my %row_data;
my @item_fields = map +{ field => $_ || '' }, @$row{ @witnesscodessorted };
$row_data{item_value} = [ @item_fields ];
$row_data{itemnumber} = $row->{itemnumber};
#reporting this_row values
$row_data{'nomod'} = $row->{'nomod'};
$row_data{bibinfo} = $row->{bibinfo};
$row_data{author} = $row->{author};
$row_data{title} = $row->{title};
$row_data{isbn} = $row->{isbn};
$row_data{biblionumber} = $row->{biblionumber};
my $is_on_loan = C4::Circulation::IsItemIssued( $row->{itemnumber} );
$row_data{onloan} = $is_on_loan ? 1 : 0;
push(@item_value_loop,\%row_data);
}
my @header_loop=map { { header_value=> $witness{$_}} } @witnesscodessorted;
return { item_loop => \@item_value_loop, item_header_loop => \@header_loop };
}
#BE WARN : it is not the general case
# This function can be OK in the item marc record special case
# Where subfield is not repeated
# And where we are sure that field should correspond
# And $tag>10
sub UpdateMarcWith {
my ($marcfrom,$marcto)=@_;
my ( $itemtag, $itemtagsubfield) = &GetMarcFromKohaField("items.itemnumber", "");
my $fieldfrom=$marcfrom->field($itemtag);
my @fields_to=$marcto->field($itemtag);
my $modified = 0;
foreach my $subfield ( $fieldfrom->subfields() ) {
foreach my $field_to_update ( @fields_to ) {
if ( $subfield->[1] ) {
unless ( $field_to_update->subfield($subfield->[0]) eq $subfield->[1] ) {
$modified++;
$field_to_update->update( $subfield->[0] => $subfield->[1] );
}
}
else {
$modified++;
$field_to_update->delete_subfield( code => $subfield->[0] );
}
}
}
return $modified;
}
sub find_value {
my ($tagfield,$insubfield,$record) = @_;
my $result;
my $indicator;
foreach my $field ($record->field($tagfield)) {
my @subfields = $field->subfields();
foreach my $subfield (@subfields) {
if (@$subfield[0] eq $insubfield) {
$result .= @$subfield[1];
$indicator = $field->indicator(1).$field->indicator(2);
}
}
}
return($indicator,$result);
}
# ----------------------------
# Background functions
sub add_results_to_template {
my $template = shift;
my $results = shift;
$template->param(map { $_ => $results->{$_} } keys %{ $results });
}
sub add_saved_job_results_to_template {
my $template = shift;
my $completedJobID = shift;
my $job = C4::BackgroundJob->fetch($sessionID, $completedJobID);
my $results = $job->results();
add_results_to_template($template, $results);
my $fields = $job->get("modified_fields");
my $items = $job->get("modified_items");
$template->param(
modified_items => $items,
modified_fields => $fields,
);
}
sub put_in_background {
my $job_size = shift;
my $job = C4::BackgroundJob->new($sessionID, "test", '/cgi-bin/koha/tools/batchMod.pl', $job_size);
my $jobID = $job->id();
# fork off
if (my $pid = fork) {
# parent
# return job ID as JSON
# prevent parent exiting from
# destroying the kid's database handle
# FIXME: according to DBI doc, this may not work for Oracle
$dbh->{InactiveDestroy} = 1;
my $reply = CGI->new("");
print $reply->header(-type => 'text/html');
print '{"jobID":"' . $jobID . '"}';
exit 0;
} elsif (defined $pid) {
# child
# close STDOUT to signal to Apache that
# we're now running in the background
close STDOUT;
close STDERR;
} else {
# fork failed, so exit immediately
warn "fork failed while attempting to run tools/batchMod.pl as a background job";
exit 0;
}
return $job;
}