off the top of my head, if you have in hand all the doc IDs that were returned so far, you can do this: 1) Build a Filter which will return any doc ID that is not in that list. For example, pass it the list of doc IDs and every time next() or skipTo is called, it will skip over the given doc IDs. 2) Execute a MatchAllDocsQuery, together w/ the above filter. 3) The result will be the list of doc IDs the filter accepted, namely those that were not returned so far. 4) Delete each doc ID.
This will make sure you attempt to delete only docs that are not deleted yet. Another approach you can take is iterate from 0 to reader.maxDoc() and delete only the docs that were not retrieved so far. with this, you may attempt to delete an already deleted document. If you want to avoid it, call reader.isDeleted(id) and delete it only if it returns false. Hope this helps, Shai On Thu, Jul 23, 2009 at 5:58 AM, Anuj Bhatt <anuj.bh...@gmail.com> wrote: > Hi, > > I'm relatively new to Lucene. I have the following case: I have > indexed a bunch of documents. I then, query the index using > IndexSearcher and retrieve the documents using Hits (I do know this is > deprecated -- I'm using v 2.4.1). So, I do this for a set of queries > and maintain which documents are returned to each one. In the end of > it all, I have a list of documents maintained (more specifically, the > hits.id(some_iterator_int) associated with the doc). Now, I wish to > delete the documents which have not been returned for any query, from > the index. How can I do this? > > My initial assumption was that I could retrieve all the doc ids from > IndexReader and just traverse the list that I have maintained, if it > is in the list, I don't delete it otherwise I do. Looking around > didn't yield anything, and hence the mail. > > > Any suggestions? > > > Regards, > Anuj > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > >
