Hello!
Here is a solution I come up with. Heavy code, has limitations, but works for
my case.
// parsing query
QueryParser parser = new QueryParser(LUCENE_VERSION, CONTENTS_FIELD, analyzer);
Query q = parser.parse("\"" + QueryParser.escape(phraseText) + "\"");
q = q.rewrite(searcher.getIndexReader());
// getting terms (using LinkedHashSet to preserve the order)
Set<Term> qTerms = new LinkedHashSet<Term>();
q.extractTerms(qTerms);
if (qTerms.isEmpty()) {
// empty query
return ret;
}
// putting each term except for the last one to multi-phrase query
MultiPhraseQuery mq = new MultiPhraseQuery();
Iterator<Term> it = qTerms.iterator();
Term lastTerm = it.next();
while (it.hasNext()) {
mq.add(lastTerm);
lastTerm = it.next();
}
// searching for terms which start with the last term
termEnum = searcher.getIndexReader().terms(lastTerm);
List<Term> qTail = new ArrayList<Term>();
do {
Term t = termEnum.term();
if (!t.text().startsWith(lastTerm.text())) {
// no need to go further because of terms sorting
break;
}
if (t.field().equals(CONTENTS_FIELD)) {
qTail.add(t);
}
} while (termEnum.next());
// adding last term variations
mq.add(qTail.toArray(new Term[] {}));
// mq is now the query you need
Best regards,
Dmitry.
----- Original Message -----
From: "Ralf Heyde" <[email protected]>
To: [email protected]
Sent: Thursday, October 13, 2011 5:07:20 PM
Subject: Is it possible to combine Wildcard and Phrasequery for the Queryparser
Hello,
i'm trying to search the following phase:
I'm searching all occurrences of:
. "The Right Way"
. "The Right Ways"
Possible solutions could be something like this - combining a phrase &
wildcard search:
. title:"The Right Way*"
. title:"The Right Way"*
But these approaches don't work using the QueryParser - a ParseException is
thrown.
Does anybody have an idea how to face this problem?
Is there a general (another) solution for that problem?
Regards
Ralf
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