Search suggestions for long searches can take too long to calculate

[Mike Rylander]

Evergreen version: 3.11+

The suggestion efficacy testing done for "did you mean" suggestions requested against long user searches can take a very long time. It's also probably not useful to the user to look for many spelling-corrected suggestions on 20 word searches.

The next planned enhancement to the Did You Mean functionality will focus partly on making suggestion calculation smarter internally rather than effectively generating suggestions for each word separately and then testing and combining them all at the end. But, as an intermediate stop-gap, we can limit size of the user searches for which we will offer suggestions.

Branch forthcoming...

[Mike Rylander (mrylander)]

Here's a branch that adds a Global Flag to control the search length cap for spelling-based suggestions:

https://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/user/miker/lp-2059974-restrict-dym-search-length

[Elizabeth Davis (elidavis)]

I have tested this code and consent to signing off on it with my name, elizabeth davis and my email address, <email address hidden>

[Blake GH (bmagic)]

Thanks everyone! I confirmed that the DB script runs on a new install as well as an upgrade. I also confirmed that with the patch, the sym spell doesn't get invoked when there are more than 3 words in the search string.

I've pushed to 3.11, 3.12, 3.13 and main