My problem is: the [content] value can be huge. Duplicating it in more than one index document waste disk space (and search time?). In additions, when new documents are added to the second index, it will be faster to just index the linked [content] once (in first index file) and any subsequent reference to the same [content] will not need to re-index.
In fact, I do not really need to physically separate the indices into 2 files because Lucene supports Heterogeneous documents in an index file. I have no idea of how that work in a search. Does anyone know? Thanks in advance. -----Original Message----- From: Erick Erickson [mailto:[EMAIL PROTECTED] Sent: Tuesday, May 06, 2008 9:36 AM To: java-user@lucene.apache.org Subject: Re: How to make a query that associates 2 index files You don't. You really have to roll your own solution here, there's no "inter-index" awareness that I know of in Lucene. Typically, people either do a half-half solution (that is, put the text search in Lucene and leave the DB parts in the DB) or de-normalize the data in a Lucene index so you don't have to even try to do things cross-index. And then there's Marcelo Ochoa (I may have the spelling wrong) who's put together some way to embed Lucene in an Oracle database, but that's magic to me. Why do you want to arrange your index this way in the first place? Perhaps there's a more specific answer waiting out there... Best Erick On Tue, May 6, 2008 at 12:14 PM, Michael Siu <[EMAIL PROTECTED]> wrote: > Hi, > > > > I am a newbie to Lucene. I have a question for making a query that > associate > 2 index files: > > > > - One index has the content index for a list of documents and a key to the > document. That means the Lucene document of this index contains 2 fields: > > the 'content' and the 'key'. > > - another index has the some data indexed associated with the 'key' in the > previous index. The Lucene document of this index contains several fields: > > the 'who' that contains some data and the 'key' that _points_ to the > document in the first index. > > > > Sample data: > > Index_1: [key] [content] > > Abc "blah blah 123 ..." > > Xyz "123 321 a nice day ..." > > > > Index_2: [who] [accessed] [key] > > David 1/1/2007 Abc > > Someone 1/2/2005 Abc > > Guess 12/1/2000 Xyz > > Harry 1/1/2008 Abc > > Sandra 1/1/2003 Xyz > > > > As shown, the [key] field in Index_2 has repeated value that _points_ to > the > [key] values in Index_1. How do I make a query for the following: > > > > Find out all documents in Index_2: > > - [who] is in range of 'David' to 'Guess' and > > - [accessed] in range '1/1/1900' to '1/1/2010' and > > - [key] associated [content] in Index_1 that contains the term 'blah' > > > > I know this is more SQL like query. Is Lucene capable of doing this type > of > query that needs associations among index files? > > > > Thanks in advance. > > > > - m > > > > > > > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
