Thanks, Mark!
But I suppose it does matter where in the index chain it goes? I would
guess it is applied to the tokens, so I suppose I should put it at the
very end - after WordDelimiter and Lowercase have been applied.
Is that correct?
>> <analyzer type="index">
>> <filter class="solr.WordDelimiterFilterFactory"
>> splitOnCaseChange="1" splitOnNumerics="1"
>> stemEnglishPossessive="1" generateWordParts="1"
>> generateNumberParts="1" catenateAll="1"
>> preserveOriginal="1" />
>> <filter class="solr.LowerCaseFilterFactory" />
<filter class="solr.ReversedWildcardFilterFactory" />
>> </analyzer>
Cheers,
Chantal
Mark Miller schrieb:
> You just put it in the index chain, not the query chain. The
> SolrQueryParser will consult it when building a wildcard search - don't
> put it in the query chain. I know, appears like a bit of magic. That
> Andrzej is a wizard though, so it makes sense ;)
>
> --
> - Mark
>
> http://www.lucidimagination.com
>
>
>
Chantal Ackermann wrote:
Hi all,
I would have two questions about the ReversedWildcardFilterFactory:
a) put it into both chains, index and query, or into index only?
b) where exactly in the/each chain do I have to put it? (Do I have to
respect a certain order - as I have wordDelimiter and lowercase in
there, as well.)
More Details:
I understand it is used to allow queries like "*sport".
My current configuration for the field I want to use it for contains
this setup:
<fieldType name="text_cn" class="solr.TextField">
<analyzer>
<filter class="solr.WordDelimiterFilterFactory"
splitOnCaseChange="1" splitOnNumerics="1"
stemEnglishPossessive="1" generateWordParts="1"
generateNumberParts="1" catenateAll="1"
preserveOriginal="1" />
<filter class="solr.LowerCaseFilterFactory" />
</analyzer>
</fieldType>
The wiki page
http://wiki.apache.org/solr/AnalyzersTokenizersTokenFilters states for
the ReversedWildcardFF:
"Add this filter to the index analyzer, but not the query analyzer."
However, the API for it says it provides functionality at index and
query time (my understanding):
"When this factory is added to an analysis chain, it will be used both
for filtering the tokens during indexing, and to determine the query
processing of this field during search."
Any help is greatly appreciated.
Thanks!
Chantal
