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dineshbang
 Post subject: FullTextQuery result size problem
PostPosted: Thu Jul 09, 2009 5:36 am 
Newbie

Joined: Tue May 19, 2009 4:49 am
Posts: 14
Hello ,

There is a strange response I am getting randomly while using FullTextQuery.

session = sessionFactory.openSession();
fullTextSession = Search.getFullTextSession(session);
SearchFactory searchFactory = fullTextSession.getSearchFactory();
Analyzer phoneticAnalyzer = searchFactory.getAnalyzer(PartyDO.class);
org.apache.lucene.queryParser.QueryParser parser = new QueryParser("partyID",phoneticAnalyzer);
// searchQuery is a simple query string , on a single field
org.apache.lucene.search.Query luceneQuery = parser.parse(searchQuery);
FullTextQuery fullTextQuery = fullTextSession.createFullTextQuery(luceneQuery, PartyDO.class);
int resultSize = fullTextQuery.getResultSize();
System.out.println("Search Result Size >>>>>>>>>>>>"+ resultSize);
query = fullTextQuery.list();
System.out.println("Search List Size >>>>>>>>>>>>"+ query.size());


Now I expect the fullTextQuery.getResultSize(); & query.size()); to return the same value. But randomly , at times when the result size is quite big (300-300 rows) I find that the query response list comes empty.

Any idea , what could be the reason ?

Hibernate version : 3.1.0.GA
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hardy.ferentschik
 Post subject: Re: FullTextQuery result size problem
PostPosted: Thu Jul 09, 2009 8:41 am 
Hibernate Team
Hibernate Team

Joined: Thu Apr 05, 2007 5:52 am
Posts: 1689
Location: Sweden
Hi,

Is there anything in the logs? For example it could help to turn on SQL debug trace and see which queries get executed. Or is there even a stack trace?

Also, could you provide some more information about your environment. Which Hibernate version, which environment are you running in - standalone app vs in container?

The best would be of course to give us some sort of a test case we can use to try to reproduce the issue.

--Hardy
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dineshbang
 Post subject: Re: FullTextQuery result size problem
PostPosted: Fri Jul 10, 2009 8:34 am 
Newbie

Joined: Tue May 19, 2009 4:49 am
Posts: 14
Hey Hardy,
Sorry for late response.
See the log below, we dont get any queries in logs , in Hibernate Search isnt? I have turned on the SQL debug trace , but could not find any query. Anyways log trace below :
Code:
DEBUG [WebContainer : 1] (org.hibernate.search.reader.SharingBufferReaderProvider:openReader:115)  - Opening IndexReader for directoryProviders: 1
[WebContainer : 1] DEBUG org.hibernate.search.reader.SharingBufferReaderProvider  - Opening IndexReader for directoryProviders: 1
DEBUG [WebContainer : 1] (org.hibernate.search.reader.SharingBufferReaderProvider:closeReader:58)  - Closing MultiReader: org.hibernate.search.reader.CacheableMultiReader@37bb37bb
[WebContainer : 1] DEBUG org.hibernate.search.reader.SharingBufferReaderProvider  - Closing MultiReader: org.hibernate.search.reader.CacheableMultiReader@37bb37bb
[7/10/09 17:55:44:953 IST] 0000002f SystemOut     O Search Result Size >>>>>>>>>>>>22
[7/10/09 17:55:44:953 IST] 0000002f SystemOut     O Search Query >>>>>>>>>>>>LastName:JOHNSON~0.3
[WebContainer : 1] (org.hibernate.search.reader.SharingBufferReaderProvider:openReader:115)  - Opening IndexReader for directoryProviders: 1
734714 [WebContainer : 1] DEBUG org.hibernate.search.reader.SharingBufferReaderProvider  - Opening IndexReader for directoryProviders: 1
DEBUG [WebContainer : 1] (org.hibernate.search.reader.SharingBufferReaderProvider:closeReader:58)  - Closing MultiReader: org.hibernate.search.reader.CacheableMultiReader@37bb37bb
[WebContainer : 1] DEBUG org.hibernate.search.reader.SharingBufferReaderProvider  - Closing MultiReader: org.hibernate.search.reader.CacheableMultiReader@37bb37bb
[7/10/09 17:55:44:953 IST] 0000002f SystemOut     O Search List Size >>>>>>>>>>>>0


I usually get this error when I make a query with Approx search with very low approximation (~0.1 - ~0.3) , above that i.e. (~0.5-~0.8) works good or when I try fetching the results using pagination.
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hardy.ferentschik
 Post subject: Re: FullTextQuery result size problem
PostPosted: Fri Jul 10, 2009 9:06 am 
Hibernate Team
Hibernate Team

Joined: Thu Apr 05, 2007 5:52 am
Posts: 1689
Location: Sweden
What do we see in the log? Two consecutive searches? There shoud be some SQL, however? Did you set hibernate.show_sql to true in your configuration?

Maybe you could provide a full example, including annotated classes, indexing and search code.

--Hardy
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