I am saving the following title to index
doc.add(new TextField(TITLE, "Button",Field.Store.YES ));
Then when I search for it with say "butto", nothing returns. I must search for "button" to get anything back. What do I have to do so that any substring of button gives a result? I am using
StandardAnalyzer analyzer = new StandardAnalyzer();
The StandardAnalyzer creates just the token button for the input text and so, only a query for button matches the document.
To search for any substring of button, you have two options.
At search-time, you can use a different query, e.g. a PrefixQuery or a WildcardQuery. If you use the query parser, you can use butto? or butto*.
At index-time, you can use a different analyzer, that emits substrings as tokens, for example the EdgeNGramTokenizer which would emit [bu, but, butt, butto, button] based on the configuration; or the NGramTokenizer, which would emit [bu, ut, tt, to, on] and so on for the configured size(s).
