[sword-devel] indexed search discrepancy

[Matthew Talbert]

>> If by backward compatibility, you mean that old indexes will still
>> work as they always have, then backwards compatibility is being
>> preserved (this is how I would interpret it).
>
> This is what I meant. The analyzer is used to tokenize both the text going
> into the index and the search request. If both are not tokenized the same
> there will be mismatches.
>
> Some examples: old index w/o stopwords and engine that preserves them. In
> the following example IN is a stopword.
>
> Search a phrase w/ a stop word. "in Christ" will look for all soca
> containing both "in" and "Christ" with the first immediatily preceding the
> second.
>
> Search for the same but not as a phrase. The default action is to find all
> verses that contain either word. This will find all verses with Christ and
> none with In. This is the same as searching for IN OR CHRIST
>
> If the default is overridden to mean AND or the search is IN AND CHRIST then
> no verses will be found.

You are correct. I wasn't thinking of the AND scenario (which is
actually default in Xiphos simple search). In these cases, searching
the old index would certainly not return the expected results.

Matthew