I am new to Lucene and am having problems with booleanQueries. How do you write Boolean OR and AND
queries?
Is this an OR query
booleanQuery.add(query1, BooleanClause.Occur.SHOULD);
booleanQuery.add(query2, BooleanClause.Occur.SHOULD);
and is this an AND query
booleanQuery.add(query1, BooleanClause.Occur.MUST);
booleanQuery.add(query2, BooleanClause.Occur.MUST);
Is there a problem writing it this way so I can change between the two by setting booleanANDSearch
to true or false
booleanQuery.add(query1,(booleanANDSearch?BooleanClause.Occur.MUST:BooleanClause.Occur.SHOULD));
booleanQuery.add(query2,(booleanANDSearch?BooleanClause.Occur.MUST:BooleanClause.Occur.SHOULD));
Also, when I call booleanQuery.toString(), I am getting this:
(upc:creatine description:creatine content:creatine) (brand:gluten brand:free) (category:alc
category:beer)
It looks like each grouping is a query but how are the queries connected, with
AND, OR or NOT?
--
Thanks,
Warren Bell
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