Openlibrary: Subtitle excluded from title search

[seabelis]

Description

Searching for a work using only its subtitle produces no results.

Evidence / Screenshot (if possible)

Relevant url?

https://openlibrary.org/search?q=title%3A+%22Le+Grand+Livre+des+cr%C3%A9atures%22&mode=everything should include https://openlibrary.org/works/OL17605693W/Harry_Potter in results.

Expectation

Sometimes the subtitle is the most important part of the title. This should be searchable when title field is specified for search.

Details

• Logged in (Y/N)? Y
• Browser type/version? Chrome Version 76.0.3809.100 (Official Build) (64-bit)
• Operating system? macOS Mojave 10.14.6

Proposal & Constraints

Stakeholders

[tfmorris]

The five title related fields are:

• title
• subtitle
• alternative_title
• alternative_subtitle
• title_suggest (a copy of title with different indexing)

The first four should probably all be included in title searches.

[seabelis]

The last three are not accessible via the form? I did not realise these existed.

[cdrini]

The fields stored on solr are slightly different from the fields accessible from the form; the fields available from the form aren't publicly defined anywhere (I don't think).

[tfmorris]

There would still only be a single user visible form field for entry (ie "Title"), but internally it would search all four relevant fields for matches.

[seabelis]

So can each edition title be an alternative title at the work level?

[seabelis]

Or better yet [edition_title: edition_subtitle].

[cdrini]

I think that's what the field was created for, but whether it does that is an open question :P

[seabelis]

I think it doesn't since search by title only sees the work's title.

[xayhewalo]

~Making this a sub-task of #789. Assigning @cdrini per slack discussions~

edit: removed the link to #789

[tfmorris]

This doesn't appear to have anything to do with #789, but is related to #889. The given search string is an edition subtitle, not the subtitle of the work. The work isn't found for the same reason that title searches on any edition title, subtitle, etc don't work.