use vars qw($VERSION @ISA @EXPORT @EXPORT_OK);
BEGIN {
- $VERSION = 3.02;
+ $VERSION = 3.07.00.049;
require Exporter;
@ISA = qw(Exporter);
@EXPORT = qw(
$nearby = GetNearbyItems($itemnumber, [$num_each_side]);
- @next = @{ $nearby->{next} };
- @prev = @{ $nearby->{prev} };
+ @items = @{ $nearby->{items} };
- foreach (@next) {
+ foreach (@items) {
# These won't format well like this, but here are the fields
print $_->{title};
print $_->{biblionumber};
# This is the information required to scroll the browser to the next left
# or right set. Can be derived from next/prev, but it's here for convenience.
- print $nearby->{prev_itemnumber};
- print $nearby->{next_itemnumber};
- print $nearby->{prev_biblionumber};
- print $nearby->{next_biblionumber};
+ print $nearby->{prev_item}{itemnumber};
+ print $nearby->{next_item}{itemnumber};
+ print $nearby->{prev_item}{biblionumber};
+ print $nearby->{next_item}{biblionumber};
# These will be undef if the values are not used to calculate the
# nearby items.
print $nearby->{starting_ccode}->{code};
print $nearby->{starting_ccode}->{description};
- print $nearby->{starting_itemnumber};
-
This finds the items that are nearby to the supplied item, and supplies
those previous and next, along with the other useful information for displaying
the shelf browser.
=cut
sub GetNearbyItems {
- my ($itemnumber, $num_each_side) = @_;
- $num_each_side ||= 3;
+ my ( $itemnumber, $num_each_side, $gap) = @_;
+ $num_each_side ||= 3;
+ $gap ||= 7; # Should be > $num_each_side
+ die "BAD CALL in C4::ShelfBrowser::GetNearbyItems, gap should be > num_each_side"
+ if $gap <= $num_each_side;
my $dbh = C4::Context->dbh;
- my $marcflavour = C4::Context->preference("marcflavour");
my $branches = GetBranches();
my $sth_get_item_details = $dbh->prepare("SELECT cn_sort,homebranch,location,ccode from items where itemnumber=?");
# Build the query for previous and next items
my $prev_query ='
- SELECT *
+ SELECT itemnumber, biblionumber, cn_sort, itemcallnumber
FROM items
WHERE
((cn_sort = ? AND itemnumber < ?) OR cn_sort < ?) ';
my $next_query ='
- SELECT *
+ SELECT itemnumber, biblionumber, cn_sort, itemcallnumber
FROM items
WHERE
((cn_sort = ? AND itemnumber >= ?) OR cn_sort > ?) ';
push @params, $start_ccode->{code};
}
- my $sth_prev_items = $dbh->prepare($prev_query . $query_cond . ' ORDER BY cn_sort DESC, itemnumber LIMIT ?');
- my $sth_next_items = $dbh->prepare($next_query . $query_cond . ' ORDER BY cn_sort, itemnumber LIMIT ?');
- push @params, $num_each_side;
- $sth_prev_items->execute(@params);
- $sth_next_items->execute(@params);
-
- # Now we have the query run, suck out the data like marrow
- my @prev_items = reverse GetShelfInfo($sth_prev_items, $marcflavour);
- my @next_items = GetShelfInfo($sth_next_items, $marcflavour);
-
- my $next_itemnumber = $next_items[-1]->{itemnumber} if @next_items;
- my $next_biblionumber = $next_items[-1]->{biblionumber} if @next_items;
-
- my $prev_itemnumber = $prev_items[0]->{itemnumber} if @prev_items;
- my $prev_biblionumber = $prev_items[0]->{biblionumber} if @prev_items;
-
- my %result = (
- next => \@next_items,
- prev => \@prev_items,
- next_itemnumber => $next_itemnumber,
- next_biblionumber => $next_biblionumber,
- prev_itemnumber => $prev_itemnumber,
- prev_biblionumber => $prev_biblionumber,
- starting_itemnumber => $itemnumber,
- );
- $result{starting_homebranch} = $start_homebranch if $start_homebranch;
- $result{starting_location} = $start_location if $start_location;
- $result{starting_ccode} = $start_ccode if $start_ccode;
- return \%result;
+ my @prev_items = @{
+ $dbh->selectall_arrayref(
+ $prev_query . $query_cond . ' ORDER BY cn_sort DESC, itemnumber DESC LIMIT ?',
+ { Slice => {} },
+ ( @params, $gap )
+ )
+ };
+ my @next_items = @{
+ $dbh->selectall_arrayref(
+ $next_query . $query_cond . ' ORDER BY cn_sort, itemnumber LIMIT ?',
+ { Slice => {} },
+ ( @params, $gap + 1 )
+ )
+ };
+
+ my $prev_item = $prev_items[-1];
+ my $next_item = $next_items[-1];
+ @next_items = splice( @next_items, 0, $num_each_side + 1 );
+ @prev_items = reverse splice( @prev_items, 0, $num_each_side );
+ my @items = ( @prev_items, @next_items );
+
+ $next_item = undef
+ if not $next_item
+ or ( $next_item->{itemnumber} == $items[-1]->{itemnumber}
+ and ( @prev_items or @next_items <= 1 )
+ );
+ $prev_item = undef
+ if not $prev_item
+ or ( $prev_item->{itemnumber} == $items[0]->{itemnumber}
+ and ( @next_items or @prev_items <= 1 )
+ );
+
+ # populate the items
+ @items = GetShelfInfo( @items );
+
+ return {
+ items => \@items,
+ next_item => $next_item,
+ prev_item => $prev_item,
+ starting_homebranch => $start_homebranch,
+ starting_location => $start_location,
+ starting_ccode => $start_ccode,
+ };
}
-# This runs through a statement handle and pulls out all the items in it, fills
-# them up with additional info that shelves want, and returns those as a list.
+# populate an item list with its title and upc, oclc and isbn normalized.
# Not really intended to be exported.
sub GetShelfInfo {
- my ($sth, $marcflavour) = @_;
-
- my @items;
- while (my $this_item = $sth->fetchrow_hashref()) {
- my $this_biblio = GetBibData($this_item->{biblionumber});
- next if (!defined($this_biblio));
- $this_item->{'title'} = $this_biblio->{'title'};
+ my @items = @_;
+ my $marcflavour = C4::Context->preference("marcflavour");
+ my @valid_items;
+ for my $item ( @items ) {
+ my $this_biblio = GetBibData($item->{biblionumber});
+ next unless defined $this_biblio;
+ $item->{'title'} = $this_biblio->{'title'};
my $this_record = GetMarcBiblio($this_biblio->{'biblionumber'});
- $this_item->{'browser_normalized_upc'} = GetNormalizedUPC($this_record,$marcflavour);
- $this_item->{'browser_normalized_oclc'} = GetNormalizedOCLCNumber($this_record,$marcflavour);
- $this_item->{'browser_normalized_isbn'} = GetNormalizedISBN(undef,$this_record,$marcflavour);
- push @items, $this_item;
+ $item->{'browser_normalized_upc'} = GetNormalizedUPC($this_record,$marcflavour);
+ $item->{'browser_normalized_oclc'} = GetNormalizedOCLCNumber($this_record,$marcflavour);
+ $item->{'browser_normalized_isbn'} = GetNormalizedISBN(undef,$this_record,$marcflavour);
+ push @valid_items, $item;
}
- return @items;
+ return @valid_items;
}
# Fetches some basic biblio data needed by the shelf stuff
projects / koha.git / blobdiff