I would suggest starting with: http://wiki.apache.org/lucene-java/
LuceneFAQ#head-3558e5121806fb4fce80fc022d889484a9248b71 especially
the part on Luke.
Luke will let you try out the various queries and show you what they
look like before being submitted.
Cheers,
Grant
On Aug 23, 2007, at 3:04 PM, Spencer Tickner wrote:
Hi List,
Thanks in advance for the help. I'm creating a simple searching test
based on Query Parser and from what I've read it should have no
problems with a Phrase Search. However I can't seem to get any results
back.
I'm doing a simple index using the StandardAnalyzer. Output from the
indexing gives:
.......
stored/uncompressed,indexed,tokenized<title:Auditor General Act>
......
I then have a simpleSearch class:
public class SimpleSearch {
public Hits doSearch(String term, String field) throws IOException,
CorruptIndexException, ParseException {
FSDirectory directory =
FSDirectory.getDirectory("<path_to_index>");
IndexSearcher searcher = new IndexSearcher(directory);
IndexReader reader;
reader = IndexReader.open(directory);
QueryParser parser = new QueryParser(field, new
StandardAnalyzer());
Query query =parser.parse(term);
// Just a couple of tests to see if I can figure out what's
going on
System.out.println(query.toString() + "\n");
System.out.println(query.rewrite(reader).toString() + "\n");
return searcher.search(query);
}
public static void main(String[] args) {
SimpleSearch obj = new SimpleSearch();
String strQuery = "Auditor General";
Hits hits;
try {
hits = obj.doSearch(strQuery, "title");
} catch (Exception e) {
System.out.println("Error1: " + e.getMessage());
return;
}
Document doc;
for (int i = 0; i < hits.length(); i++) {
try {
doc = hits.doc(i);
} catch (Exception e) {
System.out.println("Error2: " + e.getMessage());
return;
}
System.out.println(doc.get("title"));
}
}
}
When strQuery = "Auditor General" I get hits back as expected. However
when I change this to strQuery = "\"Auditor General\"" I get no
hits,,, and am confused. Anyone have any thoughts?
Thanks,
Spencer
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Grant Ingersoll
http://lucene.grantingersoll.com
Lucene Helpful Hints:
http://wiki.apache.org/lucene-java/BasicsOfPerformance
http://wiki.apache.org/lucene-java/LuceneFAQ
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