Re: Problem with Range

[Michael Caughey]

Correct but actually it would be  ( DATE:[null - 20020101])  with spaces
around the -.


- Original Message -
From: Clemens Marschner [EMAIL PROTECTED]
To: Lucene Users List [EMAIL PROTECTED]
Sent: Saturday, November 23, 2002 12:18 PM
Subject: Re: Problem with Range


 This probably does not answer your question, but may be a side effect:

if(start!=null || end!=null){
  buff.append( ( DATE:[);
  buff.append(start);
  buff.append( - );
  buff.append(end);
  buff.append(] ) );
  fieldList.add(DATE);

 This implies that start OR end can be null, producing something like (
 DATE:[null-20020101])




 --
 To unsubscribe, e-mail:
mailto:[EMAIL PROTECTED]
 For additional commands, e-mail:
mailto:[EMAIL PROTECTED]



--
To unsubscribe, e-mail:   mailto:[EMAIL PROTECTED]
For additional commands, e-mail: mailto:[EMAIL PROTECTED]

Date Range - I've searched FAQs and mail list archive..... no help..... Really

[Michael Caughey]

Part of my problem seems to be that the Range Query Object isn't acting as it should 
as per the FAQ and other mail list entries.
I'm using Lucene 1.2

I have a field in my index called DATE.  I'd like to do a date range search on it. I 
am using Strings in the format of MMdd.

I have the following dates in my Index:
20021105
20021126
20021113
20021115
20021103
20021125


When I use the follwing code to search, I get an exception:
*NOTE: I'm using the MultiFieldQueryParser becuase In some cases I check other field, 
I've simplified this one to demonstrate (and run my tests isolated from other factors)

   IndexSearcher search = new IndexSearcher(myindex);
   SimpleAnalyzer analyzer = new SimpleAnalyzer();
   String[] fields = new String[1];
   fields[0] = DATE

  String buff = ( DATE:[20021101 - 20021131] );
  Query query = MultiFieldQueryParser.parse(buff, fields, analyzer);
  searcher.search(query);

I get the following error:
java.lang.IllegalArgumentException: At least one term must be non-null

if buff = ( DATE:20021101 - 20021131 );
as well as
if buff = ( DATE:(20021101 - 20021131 ));
I simply get no results.

I have added the date to the document by both
Field.Text(DATE, dateStr);
and
Field.Keyword(DATE, dateStr);

I have also tried to build the queries up creating Objects.  One of the things I 
notice is that if I use the RangeQuery Object there are no spaces on either side of 
the -.

The documents which I created have the following Fields:
TITLE, DESCRIPTION and DATE.
If I search on TITLE or DESCRIPTION or a combination of both I get results just fine.

Am I doing something stupid, or is this a bug?  Seems to based on what I read that the 
example above where String buff = ( DATE:[20021101 - 20021131] ); is correct and 
should work.

I published the complete source in an earlier posting called Problem with Range.  It 
also contains a stack trace of the error.

Thanks in advance,
Michael