1 TPAC Discoverability Enhancements
2 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
4 A number of discoverability enhancements have been made to the catalog
5 to better support search engines:
7 * Titles of catalog pages now follow a "Page title - Library name" pattern
8 to provide more specific titles in search results, bookmarks, and browser
10 * The OpenSearch title now specifies the library name instead of the generic
11 "Evergreen OpenSearch" at every scope.
12 * Subject headings are now exposed as http://schema.org/about[schema:about]
13 properties instead of http://schema.org/keyword[schema:keyword].
14 * Electronic resources are now assigned a http://schema.org/url[schema:url]
15 property, and any notes or link text are assigned a
16 http://schema.org/description[schema:description] property.
17 * Given a Library of Congress relator code for 1xx and 7xx fields, we now
18 surface the URL for that relator code along with
19 the http://schema.org/contributor[schema:contributor] property to give
20 machines a better chance of understanding how the person or organization
21 actually contributed to this work.
22 * Linking out to related records:
23 ** Given an LCCN (010 field), we link to the corresponding Library of Congress
24 record using http://schema.org/sameAs[schema:sameAs].
25 ** Given an OCLC number (035 field, subfield `a` beginning with `(OCoLC)`), we
26 link to the corresponding WorldCat record using
27 http://schema.org/sameAs[schema:sameAs].
28 ** Given a URI (024 field, subfield 2 = `'uri'`), we link to the
29 corresponding OCLC Work Entity record using
30 http://schema.org/exampleOfWork[schema:exampleOfWork].
31 * The sitemap generator script now includes located URIs as well as copies
32 listed in the `asset.opac_visible_copies` materialized view, and checks
33 the children or ancestors of the requested libraries for holdings as well.
34 * Links that robots should not crawl, such as search result links, are now
35 marked with the https://support.google.com/webmasters/answer/96569?hl=en[@rel="nofollow"]
37 * Catalog pages for record details and for library descriptions now express
38 a https://support.google.com/webmasters/answer/139066?hl=en[@rel="canonical"]
39 link to simplify the number of variations of page URLs that could otherwise
40 have been derived from different search parameters.
41 * Catalog pages that do not exist now return a proper 404 "HTTP_NOT_FOUND"
42 HTTP status code, and record detail pages for records that have been deleted
43 now return a proper 410 "HTTP_GONE" HTTP status code, instead of returning a
44 misleading 200 "OK" HTTP status code.
45 * Record detail and library pages now include http://ogp.me/[Open Graph Protocol]