This is possible, you need to provider a FieldSelector to IndexReader#document(docId, selector). This won't work with Hits though, because Hits does not expose the document number, so you need to roll your own solution using TopDocs or HitCollector, for information see the discussion in this issue: https://issues.apache.org/jira/browse/LUCENE-1290
Kind regards, Daan de Wit -----Original Message----- From: Marcelo Schneider [mailto:[EMAIL PROTECTED] Sent: Wednesday, June 11, 2008 13:29 To: java-user@lucene.apache.org Subject: Is it possible to get only one Field from a Document? I have a environment where we have indexed a DB with about 6mil entries with Lucene, and each row has 25 columns. 20 cols have integer codes used as filters (indexed/unstored), and the other 5 have (very) large texts (also indexed/unstored). Currently the search I'm doing is like this: Hits hits = searcher.search(query); for (int i = 0; i < this.hits.length(); i++) { Document doc = this.hits.doc(i); String s = doc.get("fieldWanted"); // does everything with the result, etc } We are trying to reduce memory usage, however. Is it possible to return a Document object with just the Fields I really need? In the example, each Document have 25 fields, and I just need one... would this theoretically make any difference? -- Marcelo Frantz Schneider SIC - TCO - Tecnologia em Engenharia do Conhecimento DÍGITRO TECNOLOGIA E-mail: [EMAIL PROTECTED] Site: www.digitro.com -- Esta mensagem foi verificada pelo sistema de antivírus da Dígitro e acredita-se estar livre de perigo. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
