[SHARE-925][Feature] Allow case insensitive keyword search

[laurenbarker]

Purpose

Allow case insensitive search for sources.

Changes

Add a normalizer for keywords.

Side effects

Need to re-index everything.

[aaxelb]

Does using a normalizer like this mean the sources facet/donut will be all lower case?

[laurenbarker]

Ew. Yes it does.

[aaxelb]

Maybe we should add a sources.exact field for aggregations/filtering? Then once preprints/dashboard/whoever have switched over, sources could be text, which would be nicer for typed queries.

[laurenbarker]

That would probably make the most sense.

[laurenbarker]

@chrisseto would you be okay with splitting the case insensitive search stuff into two releases? One for adding an exact field for sources and another for making the sources field a text field. It would probably be easier than coordinating a release with preprints and the dashboard.

[chrisseto]

Would it make more sense to use an analyzer/tokenizer given that they are officially supported?

[laurenbarker]

@chrisseto, analyzer/tokenizer can't be used on a keyword field

Keyword fields are only searchable by their exact value.

So are you saying your on board with switching to a text field or am I missing something?

[chrisseto]

@laurenbarker Do you remember what the final decision on this was?

[laurenbarker]

@chrisseto, we still haven't heard back from product on this one. I would say move it out of the sprint and close the PR until a decision is made.

[chrisseto]

@laurenbarker alright, thank you!