232 lines
6.2 KiB
Text
232 lines
6.2 KiB
Text
=head1 NAME
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ILS::Item - Portable Item status object class for SIP
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=head1 SYNOPSIS
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use ILS;
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use ILS::Item;
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# Look up item based on item_id
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my $item = new ILS::Item $item_id;
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# Basic object access methods
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$item_id = $item->id;
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$title = $item->title_id;
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$media_type = $item->sip_media_type;
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$bool = $item->magnetic;
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$locn = $item->permanent_location;
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$locn = $item->current_location;
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$props = $item->sip_item_props;
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$owner = $item->owner;
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$str = $item->sip_circulation_status;
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$bool = $item->available;
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@hold_queue = $item->hold_queue;
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$pos = $item->hold_queue_position($patron_id);
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$due = $item->due_date;
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$pickup = $item->hold_pickup_date;
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$recall = $item->recall_date;
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$fee = $item->fee;
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$currency = $item->fee_currency;
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$type = $item->sip_fee_type;
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$mark = $item->sip_security_marker;
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$msg = $item->screen_msg;
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$msg = $item->print_line;
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# Operations on items
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$status = $item->status_update($item_props);
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=head1 DESCRIPTION
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An C<ILS::Item> object holds the information necessary to
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circulate an item in the library's collection. It does not need
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to be a complete bibliographic description of the item; merely
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basic human-appropriate identifying information is necessary
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(that is, not the barcode, but just a title, and maybe author).
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For the most part, C<ILS::Item>s are not operated on directly,
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but are passed to C<ILS> methods as part of a transaction. That
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is, rather than having an item check itself in:
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$item->checkin;
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the code tells the ILS that the item has returned:
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$ils->checkin($item_id);
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Similarly, patron's don't check things out (a la,
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C<$patron-E<gt>checkout($item)>), but the ILS checks items out to
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patrons. This means that the methods that are defined for items
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are, almost exclusively, methods to retrieve information about
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the state of the item.
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=over
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=item C<$item_id = $item-E<gt>id>
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Return the item ID, or barcode, of C<$item>.
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=item C<$title = $item-E<gt>title_id>
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Return the title, or some other human-relevant description, of
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the item.
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=item C<$media_type = $item-E<gt>media_type>
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Return the SIP-defined media type of the item. The specification
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provides the following definitions:
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000 Other
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001 Book
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002 Magazine
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003 Bound journal
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004 Audio tape
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005 Video tape
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006 CD/CDROM
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007 Diskette
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008 Book with diskette
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009 Book with CD
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010 Book with audio tape
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The SIP server does not use the media type code to alter its
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behavior at all; it merely passes it through to the self-service
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terminal. In particular, it does not set indicators related to
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whether an item is magnetic, or whether it should be
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desensitized, based on this return type. The
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C<$item-E<gt>magnetic> method will be used for that purpose.
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=item C<magnetic>
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Is the item some form of magnetic media (eg, a video or a book
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with an accompanying floppy)? This method will not be called
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unless
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$ils->supports('magnetic media')
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returns C<true>.
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If this method is defined, it is assumed to return either C<true>
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or C<false> for every item. If the magnetic media indication is
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not supported by the ILS, then the SIP server will indicate that
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all items are 'Unknown'.
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=item C<$locn = $item-E<gt>permanent_location>
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Where does this item normally reside? The protocol specification
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is not clear on whether this is the item's "home branch", or a
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location code within the branch, merely stating that it is, "The
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location where an item is normally stored after being checked
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in."
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=item C<$locn = $item-E<gt>current_location>
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According to the protocol, "[T]he current location of the item.
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[A checkin terminal] could set this field to the ... system
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terminal location on a Checkin message."
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=item C<$props = $item-E<gt>sip_item_props>
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Returns "item properties" associated with the item. This is an
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(optional) opaque string that is passed between the self-service
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terminals and the ILS. It can be set by the terminal, and should
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be stored in the ILS if it is.
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=item C<$owner = $item-E<gt>owner>
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The spec says, "This field might contain the name of the
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institution or library that owns the item."
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=item C<$str = $item-E<gt>sip_circulation_status>
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Returns a two-character string describing the circulation status
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of the item, as defined in the specification:
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01 Other
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02 On order
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03 Available
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04 Charged
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05 Charged; not to be recalled until earliest recall date
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06 In process
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07 Recalled
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08 Waiting on hold shelf
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09 Waiting to be re-shelved
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10 In transit between library locations
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11 Claimed returned
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12 Lost
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13 Missing
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=item C<$bool = $item-E<gt>available>
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Is the item available? That is, not checked out, and not on the
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hold shelf?
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=item C<@hold_queue = $item-E<gt>hold_queue>
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Returns a list of the C<$patron_id>s of the patrons that have
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outstanding holds on the item.
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=item C<$pos = $item-E<gt>hold_queue_position($patron_id)>
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Returns the location of C<$patron_id> in the hold queue for the
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item, with '1' indicating the next person to receive the item. A
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return status of '0' indicates that C<$patron_id> does not have a
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hold on the item.
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=item C<$date = $item-E<gt>recall_date>
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=item C<$date = $item-E<gt>hold_pickup_date>
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These functions all return the corresponding date as a standard
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SIP-format timestamp:
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YYYYMMDDZZZZHHMMSS
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Where the C<'Z'> characters indicate spaces.
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=item C<$date = $item-E<gt>due_date>
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Returns the date the item is due. The format for this timestamp
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is not defined by the specification, but it should be something
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simple for a human reader to understand.
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=item C<$fee = $item-E<gt>fee>
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The amount of the fee associated with borrowing this item.
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=item C<$currency = $item-E<gt>fee_currency>
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The currency in which the fee type above is denominated. This
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field is the ISO standard 4217 three-character currency code. It
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is highly unlikely that many systems will denominate fees in more
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than one currency, however.
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=item C<$type = $item-E<gt>sip_fee_type>
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The type of fee being charged, as defined by the SIP protocol
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specification:
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01 Other/unknown
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02 Administrative
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03 Damage
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04 Overdue
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05 Processing
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06 Rental
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07 Replacement
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08 Computer access charge
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09 Hold fee
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=item C<$mark = $item-E<gt>sip_security_marker>
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The type of security system with which the item is tagged:
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00 Other
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01 None
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02 3M Tattle-tape
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03 3M Whisper tape
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=item C<$msg = $item-E<gt>screen_msg>
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=item C<$msg = $item-E<gt>print_line>
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The usual suspects.
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=back
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