That's a perfectly reasonable request. But, WDF doesn't have such a feature.
Maybe what is needed is a distinct "ampersand filter" that runs before WDF
and detects ampersands that are likely shorthands for "and" and expands
them. It would also need to be able to detect "AT&T" (capital letter before
the &) and not expand it (and you can set up a character type table for WDF
that treats "&" as a letter. A single "&" could also be expanded to "and" -
that could also be done with the synonym filter, but that would not help you
with the embedded "&" of "Apples&Oranges".
Maybe a simple character filter that always expands "&" to " and " would be
good enough for a lot of common cases, as a rough approximation.
Maybe solr.PatternReplaceCharFilterFactory could be used to accomplish that.
Match "&" and replace with " and ".
-- Jack Krupansky
-----Original Message-----
From: Stephen Lacy
Sent: Wednesday, July 04, 2012 8:16 AM
To: solr-user@lucene.apache.org
Subject: WordDelimiterFilter removes ampersands
If a user writes a query "Apples & Oranges" the word delimiter filter
factory will change this into "Apples Oranges"
Which isn't very useful for me as I'd prefer especially when the phrase is
wrapped in quotes that the original is preserved.
However I still want to be able to separate Apples&Oranges into Apples &
Oranges so preserveOriginal isn't really useful.
What I really would like to be able to do is tell WordDelimeterFilter to
treat it like it's neither alpha nor numeric, however
that doesn't mean that you remove it completely.
Thanks for your help
Stephen
