RangeQuery is for Term ranges, not phrase ranges. With your data,
you would be able to do a RangeQuery of [Auburn TO UAH], but "Auburn
University" gets split into two terms by StandardAnalyzer. If you
set the fields to be untokenized (but still indexed) you'd be able to
do a RangeQuery with "Auburn University" as the beginning term,
though that might not work for your other searching needs.
Erik
On Jun 28, 2005, at 2:49 PM, Andrew Boyd wrote:
Hi All,
When I try to do a Range Query with Phrase as one of the end
points I'm not getting the results I would expect.
Here is a JUnit that shows what I'm trying to do. It fails on the
last assertEquals
public void testRangeBug(){
try{
RAMDirectory ramDir = new RAMDirectory();
Analyzer stdAnalyzer = new StandardAnalyzer();
QueryParser queryParser = new QueryParser("title",
stdAnalyzer);
org.apache.lucene.document.Document auburnDoc = new
org.apache.lucene.document.Document();
Field auburnTitle = new Field("title", "Auburn
University",
Field.Store.YES,
Field.Index.TOKENIZED,
Field.TermVector.WITH_POSITIONS_OFFSETS);
org.apache.lucene.document.Document bamaDoc = new
org.apache.lucene.document.Document();
Field bamaTitle = new Field("title", "BAMA",
Field.Store.YES,
Field.Index.TOKENIZED,
Field.TermVector.WITH_POSITIONS_OFFSETS);
org.apache.lucene.document.Document uahDoc = new
org.apache.lucene.document.Document();
Field uahTitle = new Field("title", "UAH",
Field.Store.YES,
Field.Index.TOKENIZED,
Field.TermVector.WITH_POSITIONS_OFFSETS);
IndexWriter writer = new IndexWriter(ramDir,
stdAnalyzer, true);
auburnDoc.add(auburnTitle);
bamaDoc.add(bamaTitle);
uahDoc.add(uahTitle);
writer.addDocument(auburnDoc);
writer.addDocument(bamaDoc);
writer.addDocument(uahDoc);
writer.close();
IndexSearcher searcher = new IndexSearcher(ramDir);
Hits hits = searcher.search(queryParser.parse("\"Auburn
University\""));
assertEquals("Should get one hit back ", 1, hits.length
());
// Exclusive
hits = searcher.search(queryParser.parse("{\"Auburn
University\" TO UAH}"));
assertEquals("Should get one hit back ", 1, hits.length
());
// Inclusive
hits = searcher.search(queryParser.parse("[\"Auburn
University\" TO UAH]"));
assertEquals("Should get all three back ", 3,
hits.length()); // <<<<< only returning 2
} catch(Throwable e){
e.printStackTrace();
}
}
Andrew
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