How to make Lucene match all words in query?

Question

I am using Lucene to allow a user to search for words in a large number of documents. Lucene seems to default to returning all documents containing any of the words entered.

Is it possible to change this behaviour? I know that '+' can be use to force a term to be included but I would like to make that the default action.

Ideally I would like functionality similar to Google's: '-' to exclude words and "abc xyz" to group words.

Just to clarify I also thought of inserting '+' into all spaces in the query. I just wanted to avoid detecting grouped terms (brackets, quotes etc) and potentially breaking the query. Is there another approach?

Answer 1

This looks similar to the Lucene Sentence Search question. If you're interested, this is how I answered that question:

String defaultField = ...;
Analyzer analyzer = ...;
QueryParser queryParser = new QueryParser(defaultField, analyzer);

queryParser.setDefaultOperator(QueryParser.Operator.AND);

Query query = queryParser.parse("Searching is fun");

Answer 2

Like Adam said, there's no need to do anything to the query string. QueryParser's setDefaultOperator does exactly what you're asking for.