On Friday 10 December 2004 07:10, Steve Skillcorn wrote: > Hi; > > I'm currently using Lucene (which I am extremely impressed with BTW) to > index a knowledge base of documents. One issue I have is that only certain > documents are available to certain users (or groups). The number of > documents is large, into the 100,000s, and the number of uses can be into > the 1000s. Obviously, the users permissioned to see certain documents can > change regularly, so storing the user id's in the Lucene document is > undesirable, as a permission change could mean a delete and re-add to > potentially 100s of documents. > > Does anyone have any guidance as to how I should approach this?
A typical solution would be to use a Filter for each user group. Each Filter would be built from categories indexed with the documents. The moment to build a group Filter could be the first time a user from a group queries an index after it is opened. Filters can be cached, see the recent discussion on CachingWrappingFilter and friends. Regards, Paul Elschot --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
