I don't think that there are good-and-simple solutions for these kind of problems [first make a search on indexA, then using the results, make a second search on indexB].
1- If the first search returns more than "max-term" results, then second search will throw an exception. 2- To avoid the exception, setting max-term ,for ex, to MaxInt would mean storing all results(not only top n results) of the first search(which can be very huge) in memory, and also degrading the performance of the second search.(using "Hits" object can also be a nightmare in this situation. See http://wiki.apache.org/lucene-java/ImproveSearchingSpeed ) 3- Depending on the nature of the data, choosing the right index to perform the first search can be very tricky, and starting the search with the wrong index can VERY-badly effect the overall search performance. DIGY -----Original Message----- From: Michael Garski [mailto:[EMAIL PROTECTED] Sent: Tuesday, May 06, 2008 8:44 PM To: lucene-net-user@incubator.apache.org Subject: RE: How to perform search within Search Results recursively Michael, This sort of association between to indexes can be done, but is not natively supported in Lucene. One solution that comes to mind would be to only have one index, adding the [content] field to Index_2 and omitting the [key] field all together. This would result in duplication of indexed data, but I don't think of an index as being normalized like a database. If you wanted to stay with the 2 index format, you would need to run two separate queries: 1) find [key] associated with [content] in Index_1 that contains the term 'blah' 2) query Index_2 with the following boolean clauses: +[who] is in range of 'David' to 'Guess' +[accessed] in range '1/1/1900' to '1/1/2010' +[key] found in querying Index_1 Michael -----Original Message----- From: Michael Siu [mailto:[EMAIL PROTECTED] Sent: Tuesday, May 06, 2008 8:37 AM To: lucene-net-user@incubator.apache.org Subject: RE: How to perform search within Search Results recursively Thanks for the reply. On the other hand, how to do a query for the following situation: - 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. -----Original Message----- From: Digy [mailto:[EMAIL PROTECTED] Sent: Monday, May 05, 2008 11:53 AM To: lucene-net-user@incubator.apache.org Subject: RE: How to perform search within Search Results recursively It can be done with "ANDing the new query with the previous one" (like google does). DIGY -----Original Message----- From: Michael Siu [mailto:[EMAIL PROTECTED] Sent: Monday, May 05, 2008 9:43 PM To: lucene-net-user@incubator.apache.org Subject: How to perform search within Search Results recursively Hi, I am a newbie to Lucene and Lucene.net. I am wondering if it is possible to perform search within search results recursively. That means if I initially perform a search on all fields in a query string. Then I want to perform another query string on the search results from the previous search and so on. This is similar to search within results in Google. How is it possible to perform search like this with Lucene or Lucene.net? Thanks in advance. -m
