...
- Use the Query's toString() method to see how it actually got parsed.
- Use Luke to browse your index: on the "Documents" tab, navigate to a document, then use the "Reconstruct & Edit" to look at how the fields have been stored ("Stored original" tab) and indexed ("Tokenized" tab)
...
Also be careful with Fields that are not tokenized (like Keywords). During indexation, the Analyzer won't be called for these fields, but for a search, the QueryParser can't know this and will pass all search strings through the selected Analyzer. Usually searches for Keywords are constructed in code, but during development it can be handy to use general purpose tools (e.g. Luke) to examine your index. Those tools won't know which fields are tokenized either. In the contrib/analyzers area there's a KeywordTokenizer with an example KeywordAnalyzer for cases like this.
...