On May 10, 2006, at 2:12 PM, [EMAIL PROTECTED] wrote:
Thanks for your reply. Is there any sample code that would demonstrate how to use these classes properly to get the desired effect of what im looking
for?

I am not able to access Lucene's svn at the moment, but here's my local copy of the TestSpanRegexQuery:

public class TestSpanRegexQuery extends TestCase {
  public void testSpanRegex() throws Exception {
    RAMDirectory directory = new RAMDirectory();
IndexWriter writer = new IndexWriter(directory, new SimpleAnalyzer(), true);
    Document doc = new Document();
// doc.add(new Field("field", "the quick brown fox jumps over the lazy dog", Field.Store.NO, Field.Index.TOKENIZED));
//    writer.addDocument(doc);
//    doc = new Document();
doc.add(new Field("field", "auto update", Field.Store.NO, Field.Index.TOKENIZED));
    writer.addDocument(doc);
    doc = new Document();
doc.add(new Field("field", "first auto update", Field.Store.NO, Field.Index.TOKENIZED));
    writer.addDocument(doc);
    writer.optimize();
    writer.close();

    IndexSearcher searcher = new IndexSearcher(directory);
SpanRegexQuery srq = new SpanRegexQuery(new Term("field", "aut.*"));
    SpanFirstQuery sfq = new SpanFirstQuery(srq, 1);
// SpanNearQuery query = new SpanNearQuery(new SpanQuery[] {srq, stq}, 6, true);
    Hits hits = searcher.search(sfq);
    assertEquals(1, hits.length());
  }
}

This is not quite what you're after, but close. You'll use a SpanTermQuery's and SpanRegexQuery's mixed inside a SpanNearQuery. Try out some simple examples like this and see where you get, and post back if you have issues/questions.

        Erik





Thanks

-----Original Message-----
From: Erik Hatcher [mailto:[EMAIL PROTECTED]
Sent: Wednesday, May 10, 2006 11:00 AM
To: java-user@lucene.apache.org
Subject: Re: wildcards in phrase searches


On May 10, 2006, at 1:47 PM, [EMAIL PROTECTED] wrote:

Is it possible to have wildcards in a phrase search? For example, if
my object is indexed with a phrase "benchmark properties", is there a
way to specify a phrase search that uses wildcards, such as "benchmar*
properties"
or "benchmark pro*"? I have tried using WildcardQuery, but it doesnt
seem to work with phrases, only single terms. Using the QueryParser
doesnt seem to work either, and ive tried it with the StandardAnalyzer
and KeywordAnalyzer.
Perhaps there is something simple Im missing here. Has anyone gotten
this to work?

It's a fair bit trickier than using any of the stock core classes like that. But it can be done, using SpanNearQuery nested with SpanRegexQuery's for the wildcarded parts in the contrib code (note, this uses regex syntax, not WildcardQuery syntax), along with SpanTermQuery's for the non- wildcarded
parts.

        Erik


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