How to use multifieldquery and filters in Lucene.net

filter, lucene.net

Solution

I think I now have a solution. I have discarded the use of the QueryFilter and am using a boolean query to constrain the results before the MultiFieldQuery. So the code will look something like this:

MultiFieldQueryParser parser = new MultiFieldQueryParser(new string[]{"title", "summary", "description"}, analyzer); 
parser.SetDefaultOperator(QueryParser.Operator.AND); 
Query query = parser.Parse(text); 

BooleanQuery bq = new BooleanQuery(); 
TermQuery tq = new TermQuery(new Term("distribution", distribution)); 
bq.Add(tq, BooleanClause.Occur.MUST); 
bq.Add(query, BooleanClause.Occur.MUST)

Hits hits = searcher.Search(bq);

Problem

I want to perform a multi field search on a lucene.net index but filter the results based on one of the fields. Here's what I'm currently doing: To index the fields the definitions are: ``` doc.Add(new Field("id", id.ToString(), Field.Store.YES, Field.Index.UN_TOKENIZED)); doc.Add(new Field("title", title, Field.Store.NO, Field.Index.TOKENIZED)); doc.Add(new Field("summary", summary, Field.Store.NO, Field.Index.TOKENIZED, Field.TermVector.YES)); doc.Add(new Field("description", description, Field.Store.NO, Field.Index.TOKENIZED, Field.TermVector.YES)); doc.Add(new Field("distribution", distribution, Field.Store.NO, Field.Index.UN_TOKENIZED)); ``` When I perform the search I do the following: ``` MultiFieldQueryParser parser = new MultiFieldQueryParser(new string[]{"title", "summary", "description"}, analyzer); parser.SetDefaultOperator(QueryParser.Operator.AND); Query query = parser.Parse(text); BooleanQuery bq = new BooleanQuery(); TermQuery tq = new TermQuery(new Term("distribution", distribution)); bq.Add(tq, BooleanClause.Occur.MUST); Filter filter = new QueryFilter(bq); Hits hits = searcher.Search(query, filter); ``` However, the result is always 0 hits. What am I doing wrong?

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