How about using MultiFieldQueryParser. Here is a short main I wrote:
Directory dir = new RAMDirectory();
Analyzer analyzer = new StandardAnalyzer();
IndexWriter writer = new IndexWriter(dir, analyzer);
Document doc = new Document();
doc.add(new Field("field1", "green tree", Store.NO, Index.TOKENIZED
));
writer.addDocument(doc);
doc = new Document();
doc.add(new Field("field2", "green tree", Store.NO, Index.TOKENIZED
));
writer.addDocument(doc);
writer.close();
IndexSearcher searcher = new IndexSearcher(dir);
MultiFieldQueryParser qp = new MultiFieldQueryParser(new String[] {
"field1", "field2" }, analyzer);
Query q = qp.parse("\"green tree\"");
if (q instanceof BooleanQuery /* Basically this should almost always
be true */) {
BooleanClause[] clauses = ((BooleanQuery) q).getClauses();
for (int i = 0; i < clauses.length; i++) {
clauses[i].setOccur(Occur.SHOULD); /* This is their setting
by default though */
}
}
Hits hits = searcher.search(q);
System.out.println(hits.length()); /* Should print 2. */
searcher.close();
On Nov 22, 2007 3:26 PM, Erick Erickson <[EMAIL PROTECTED]> wrote:
> The semantics of the phrase query you're constructing probably aren't
> what you think. As best I can infer, you are trying to do something
> like
>
> "green tree" in field1
> or
> "green tree" in field 2
>
> but that's not even close to what you're constructing.
>
> It would help a show what the query you want is in some form
> like that above before trying to code it, because the actual
> query you're making is something like asking for the phrase
> "word1 in field1 word1 in field2 word2 in field1 word2 in field2"
>
> Actually, I can't render the semantics of what you're doing int English.
> And Lucene can't parse it either.
>
> I suspect you want something like
> PhraseQuery pq1
> PhraseQuery pq2
> for (String word : words) {
> pq1.add(...);
> pq2.add(...)
> }
> BooleanQuery bq().
> bq.add(p1, .... SHOULD);
> bq.add(p2, ... SHOULD);
>
> Index.search(bq);
>
> Best
> Erick
>
> On Nov 22, 2007 7:17 AM, Rapthor <[EMAIL PROTECTED]> wrote:
>
> >
> > There is no option to provide an Occur.SHOULD to the PhraseQuery. So
> where
> > does it go? I changed the source to look like this:
> >
> > PhraseQuery pq = new PhraseQuery();
> > for (String word : words) {
> > for (String field : fields) {
> > pq.add(new Term(field, word));
> > }
> > }
> > Hits hits = indexSearcher.search(pq);
> >
> > However, I get an exception:
> > java.lang.IllegalArgumentException: All phrase terms must be in the same
> > field: description:green tree
> >
> > I don't understand how to a) search for combinations of words like
> "green
> > tree", b) search in multiple fields (description, text, ...) and c)
> search
> > by a SHOULD restriction.
> > --
> > View this message in context:
> > http://www.nabble.com/AND-query-in-SHOULD-tf4855719.html#a13895700
> > Sent from the Lucene - Java Users mailing list archive at Nabble.com.
> >
> >
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> >
> >
>
--
Regards,
Shai Erera
