Category filtering weird behavior about examine HOT 1 CLOSED

Hi, this all has to do with Lucene analysis. The StandardAnalyzer uses a LowerCase filter which means that anything that goes into the index for the category field (so long as you haven't specified a custom analyzer for that field) will be lowercased when it is analyzed. Analyzers work the opposite way as well, they not only change text on the way into the index, they also change text in your query when it is parsed.

So, for the example that this always works var query = searcher.CreateQuery("content").NativeQuery("sydney"); is because even if you are indexing "cOntent", it will be analyzed as "content" so this query matches.

The reason this CreateQuery("cOntent") will fail is because the query parser is probably not being used for that query under the hood whereas the underlying mechanism for .Field(ExamineFieldNames.CategoryFieldName, "cOntent") is using the query parser - so it will end up like "content".

Essentially, you've found a bug though. The mechanism for searching on category should also probably use the query parser.

from examine.