Erick wrote: > Well, I *suppose* you could get the bitset from the pre-existing filter, > copy it to the bitset for your new filter, and play with the bits at the > end. I'm not sure how you get rid of your original filter if you use > CachingWrapperFilter though.........
Ok, I'm hearing it's a doubtful option. ;-) > But.... As "the guys" have pointed out in other contexts, be really sure > your doc IDs don't change out from under you. You can only count on this if > you never, Never, NEVER delete anything from the index and then add > something else between the times you build the first filter and the time you > modify it (at least I think I have this right). In general, the above scenario is exactly what would happen. Ie. filter gets built, sometime later a doc might be deleted (or not), then sometime later a doc will be added (and added to the existing filter). As it stands in the API, if I build a filter, and a document which happens to be in it gets deleted from the index, does it automatically get removed from the filter? > That said, I wouldn't go down this route unless you have an actual, > real-live performance issue to deal with. Premature optimization being the > root of many, many, many evils. It'd be evil to debug if you mess up your > filter copying/modification..... Right - I'll make sure it's broken before diving in there and fixing it... ;-) Cheers, Paul. >> I was wondering if there was a nice way to add documents to a cached filter >> 'manually' as it were. >> The reason would be to avoid a complete refresh of the filter, if you >> already knew the docids of the extra documents to add. >> An example would be if I had a filter based on datetime, which contained >> all documents since a recent fixed timestamp. Then as each new document >> arrived, and was indexed it could be simply added to the filter quickly, >> instead of having to rebuild it from scratch each time. >> Cheers, >> Paul. -- "The overhead kick could have gone anywhere, but it didn't." MARK BRIGHT, BBC1 --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
