On 4/5/07, Leon <[EMAIL PROTECTED]> wrote:
I need to index and search real numbers in Lucene. I found NumberUtils class
in Solr project which permits one to encode doubles into string so that
alpha numeric ordering would correctly correspond to the ordering on
numbers. When I use ConstantScoreRangeQuery programmatically everything
works just fine. However when I convert this query to a string, parse it
with QueryParser and use the resulting query – no result are found.
ConstantScoreRangeQuery wquery =
new ConstantScoreRangeQuery("westbc", null,
NumberUtils.double2sortableStr(-110.500000), false, true);
Hits hits = is.search(wquery); //returns expected results
Now if I do
String wqueryString = wquery.toString();
QueryParser queryParser = new QueryParser("westbc", new KeywordAnalyzer());
Query query = queryParser.parse(wqueryString);
Hits hits = is.search(query); // returns nothing
Query.toString() is really for debugging only, and I don't believe
current implementations try to escape characters that might be interpreted
as something else if reparsed.
Simple example... I think
(new TermQuery(new Term("foo","\"a\""))).toString() would yield
foo:"a"
which if put through the query parser, would be parsed as
foo:a
-Yonik
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