[EMAIL PROTECTED] wrote:
I am using Lucene 2.0 and trying to use the MultiFieldQueryParser
in my search.
I want to limit my search to documents which have "silly"
in "field1" ...within that subset of documents, I want documents which
have
"example" in "field2" OR "field3"
The code fragment below is my attempt at this ...code blows
on the : Query query = qp.parse(...
statement ...
Besides blowing, I believe that the MUST / MUST for field2 and field3
is inappropriate ...I really want to say ..if field1 has "silly"
return documents with "example" in field2 OR field3.
Any suggestions for accomplishing this ?
Someone suggested BooleanQuery but I was not sure how to merge
that concept in with the MultiFieldQueryParser ..
I can think of two ways to do what you want, one with a parsed query and one
without. With a parsed query:
Query q = QueryParser.parse("+field1:silly +(field2:example field3:example)",
"field1", new StopAnalyzer());
If you already know the exact structure of the query, then you can just build
it up yourself, i.e. without the QueryParser, like so:
TermQuery t1 = new TermQuery(new Term("field1", "silly"));
TermQuery t2 = new TermQuery(new Term("field2", "example"));
TermQuery t3 = new TermQuery(new Term("field3", "example"));
Query subq = new BooleanQuery();
subq.add(t2, BooleanClause.Occur.Should);
subq.add(t3, BooleanClause.Occur.Should);
Query q = new BooleanQuery();
q.add(t1, BooleanClause.Occur.MUST);
q.add(subq, BooleanClause.Occur.MUST);
Good luck!
--MDC
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