I've seen this question come up a few times on the list in the past with the potential solutions of:
1. Parsing out the results of the Explain() method 2. Perform a regex on the data post-search to determine which field contained the match 3. Searching each field independently and removing duplicates post-search We've been experimenting with performing multiple searches - one search against all desired fields to find the set of documents that match, then executing a search against each field independently to determine where the match took place. The solution works but has a performance drawback, especially as the number of fields in the original query grows larger. It would be nice to have some sort of search option and an overloaded collector that would collect each hit along with the list of fields the hit matched on, but that sort of functionality is not present at this time. I'm curious if anyone has started any thoughts or work in this area, as we are about to begin determining what would be involved in such a change and are comfortable in making (and by extension submitting to JIRA) the necessary changes to add this feature. Thanks, Michael -----Original Message----- From: Khawaja Shams [mailto:[EMAIL PROTECTED] Sent: Sunday, October 12, 2008 2:50 PM To: java-user@lucene.apache.org Subject: Detecting why a collection of documents matched a query Hello, I noticed that indexSearcher.explain() method is not supposed to be run for a large collection of documents, so I am looking for an alternative that just explains why a document matched without all the scoring information. Basically, I would like to know which field of the document was responsible for getting it included in the results so I can give users some indication of what matched. We present the results 100 documents at a time. I would appreciate any ideas or directions towards implementation. Thanks! --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
