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From "Erick Erickson (Updated) (JIRA)" <>
Subject [jira] [Updated] (SOLR-2438) Case Insensitive Search for Wildcard Queries
Date Tue, 15 Nov 2011 01:46:51 GMT


Erick Erickson updated SOLR-2438:

    Attachment: SOLR-2438.patch

This is not at all ready for prime-time but I'm inviting comments on the approach. It turns
out that all the hard work has already been done, see QueryParserBase. The attached patch
is almost all tests... 

But I greatly fear that I'm grossly misusing 
QueryParserBase.lowercaseExpandedTerms, which looks like it's for parameters on the query
line? Where did *that* come from anyway? Or what the heck is it supposed to be used for, anyone

A couple of thing make me nervous about this approach. It depends in a pretty hard-coded way
on detecting LowerCaseFilterFactory and LowerCaseTokenizerFactory, if anyone adds anything
else in there it'll have to be re-coded. Is there a better way? It almost seems like a flag
on the <field> definition as Peter suggested is a more robust way of going about things.

Anyway, I'm getting way past the point of diminishing returns tonight, so I thought I'd at
least throw this out for comment.

Ignore everything with the ASCIIFoldingFilterFactory, I detect it but don't do anything with
it yet.

And I can't seem to make the reversed test work, even without the casing switch. Which means
I should put it down for the evening, I'm obviously fried. Anybody feeling kind can uncomment
the line that starts:

// make me work

and get the test class to work. It's probably trivial but I'm not seeing it.
> Case Insensitive Search for Wildcard Queries
> --------------------------------------------
>                 Key: SOLR-2438
>                 URL:
>             Project: Solr
>          Issue Type: Improvement
>            Reporter: Peter Sturge
>            Assignee: Erick Erickson
>         Attachments: SOLR-2438.patch, SOLR-2438.patch
> This patch adds support to allow case-insensitive queries on wildcard searches for configured
TextField field types.
> This patch extends the excellent work done Yonik and Michael in SOLR-219.
> The approach here is different enough (imho) to warrant a separate JIRA issue.

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