Display links to parent biblios, show linked items in holdings, allow holds on
linked items. This uses MARC to maintain relationships.
Sponsored by the Mississippi Department of Archives and History and RapidRadio
Solution. Originally developed by Savitra Sirohi and Amit Gupta at OSSLabs, with
UNIMARC support added by Zeno Tajoli. Commits squashed and merge conflicts
resolved by Chris Cormack from Catalyst. Respect for NORMARC and some small
framework portability fixes made by Jared Camins-Esakov of C & P Bibliography
Services.
IMPORTANT NOTE: A bug in the 773 coding for MARC21 was corrected from the
original OSS Labs code. The 773s generated by the pre-release code did not have
the first indicator set to '0', which means that they were not supposed to
display. Going forward, the first indicator will be set correctly, but existing
records created with this code will no longer appear (they appeared before only
due to another bug). To correct this, you could globally (or, to make sure you
only modify records created with the Analytics tool, for records with 773$0)
change the first indicator of the 773 from blank to '0'.
== Background ==
An analytic record for an item is a more detailed, monographic biblio for an
item attached to a serial record . This is often used for special issues of a
journal that are released as books on their own (assigned an ISBN, as well as an
ISSN/volume/issue). It is important for researchers to be able to search for
these items both as issues of the serial, and as monographs. It is equally
important for the library to not have duplicate item records for the item in
question to have to keep synchronized.
== Establishing relationships ==
Analytical records are connected to items belonging to parent or host
bibliographic records. This can be accomplished by:
* From an analytical bibliographic record linking to an host item by providing
the item barcode as input
* From a host item by using option "analyze", this creates a new empty
bibliographic record with field 773 (MARC21) populated
* Running a new CLI script that establishes a relationship between the
analytical record and the host item identified by the barcode in the
analytical record's 773$o (MARC21)
== Connecting Records ==
The relationships are maintained in the MARC records, we have not used database
tables at all.
== MARC Representation ==
In MARC21/NORMARC we have used:
* 773$9 to store the Koha item number of the host item
* 773$0 to store the Koha biblio number of the host bibliographic record
The above fields are used to display the relationships in various screens in the
OPAC and the staff interface. Additionally, when populating field 773 with host
item's details, we have used following MARC 21 mapping:
* 'a' <= 100/110/111 $a (author main)
* 'b' <= 250$a (edition)
* 'd' <= 260$a, 260$b, 260$c (place, publisher, year)
* 'o' <= barcode
* 't' <= 245$a (title)
* 'w' <= (003)001 --> if no 001 is available, we can populate biblionumber
* 'x' <= 022$a (issn)
* 'z' <= 020$a (isbn)
In UNIMARC, this code uses:
* 461$9 to store the Koha item number of the host item
* 461$0 to store the Koha biblio number of the host bibliographic record
When populating field 461 in UNIMARC, the following mapping is used:
* 't' <= 200$a (title)
== Treatment of Holds ==
A key requirement was to allow holds to be placed on host items from the
analytical record. We have accomplished this by allowing holds on specific
copies only. Biblio level holds are not allowed. This ensures that holds are
placed on specific items that are relevant to the analytical record.
== Deleting host items with linked analytical records ==
As we have not used database tables to maintain relationships, we had to use
search to find out if any linked analytical records are present. If 1 or more
analytical are present, we do not allow deletion of items. This is similar to
what we see when we try to delete authority records.
== Importing analytical records ==
Analytical records can be imported using bulkmarcimport or the GUI tools. The
new CLI script can be executed after the import to establish relationships with
host items. The script will establish relationships using the host item's
barcode, the barcode must be present in 773$o of the analytical record.
== What if there are two or more copies of the host item? ==
The current design will require that there be two host (773) fields, one for
each copy.
== What if there is no barcode available for the host item? ==
It is still possible to establish a relationship, by populating 773$9 with the
host's item number. However the CLI script uses barcode in 773$o to establish
relationships so it won't work where barcodes are unavailable. Also from an
analytical record, it is possible to establish a relationship to a host item by
providing the barcode as input, this option will not be available as well.
Commits that added the following features were squashed by Chris Cormack (this
is not a list of every commit):
* Display links to host records from biblio detail screens
* Support for UNIMARC, respecting the system preference 'marcflavor'
* Support holds from the OPAC
* Ability to link to items belong to host records from a analytical record
* Display items belonging to host records in the moredetail page
* Ability to edit items belonging to host records, also ability to delink from
them
* Move get host items code into a C4 routine, also calling the new routine in
related perl scripts
* Move host field population to a C4 routine, all changes in pl files to call
new routine
* Allow only specific copy holds for analytical records plus changes to use new
C4 routines
* Support for holds on items linked via host records
* Storing bibnumber and itemnumber in subfields 0 and 9, plus other mapping
changes
* New command line script that establishes relationships between analytical
records and host items and bibs. The script looks for host field (MARC21 773)
in records, and based on barcode in subfield 'o' populates host bibnumber in
subfield '0' and host itemnumber in subfield '9'. The script can be run after
an import of analytical records, it can also be run in the crontab to maintain
the relationships
* Ability to create analytical records from items, to view linked analytics, and
prevent deletion of items that have linked analytics
* New template for catalogue/detail.pl (NOTE: not a new template file, just a
new way of displaying analytics), template displays linked analytics and
allows creation of analytical records
* New zebra index for item number in host fields. This index will be used to
display links to analytical records from host records
* Display title of host record instead of the phrase host record
* Using detail.tmpl for analytics tab instead of a new template file
* Improved qualification info prepration in Prephostmarcfield
* Check for linked analytics before deleting item
* Display link to host record and more meaningful anchor text for edit item link
* Analytical record: Unimarc index in record.abs and help in
create_analytical_rel.pl
* Adding a sys pref that controls display of options to create analytical
relationships
* Add host entry in XSLT stylesheet in staff item detail
* Added host record support to OPAC detail XSLT
* Adding 773$0 and 773$9 to all frameworks
* Adding 773 subfields 0 and 9 to default marc framework via updatedatabase.pl
* Display create analytics and used in links in catalog detail
* Fixed problem where analytical records not showing in OPAC search results
because GetMarcBiblio now needs a flag to add item records
* Fixed problem where analytics count was set to 1 for all records, not just
those with analytics
* Fixed catalogue detail page not to show analytics counts if count is 0
Conflicts:
installer/data/mysql/updatedatabase.pl
koha-tmpl/intranet-tmpl/prog/en/modules/cataloguing/addbiblio.tt
kohaversion.pl
Co-author: Savitra Sirohi <savitra.sirohi@osslabs.biz>
Co-author: Zeno Tajoli <tajoli@cilea.it>
Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>
Signed-off-by: Ian Walls <ian.walls@bywatersolutions.com>
Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>
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