Hi Erik, Thank you very much for your reply.
The problem is I need only the caching without any date or query functionality. Since the only two constructable-without-wrapping Filters are the QueryFilter and DateFilter, I need either to have a dummy filter, or to have a constructor for the CachingWrapperFilter that doesn't wrap (meaning a constructor that doesn't get a filter as a parameter). Am I missing something? Regards, Mickey. -----Original Message----- From: Erik Hatcher [mailto:[EMAIL PROTECTED] Sent: Thursday, May 26, 2005 2:52 PM To: java-user@lucene.apache.org Subject: Re: using the CachingWrapperFilter On May 26, 2005, at 5:02 AM, M. Mokotov wrote: > Can someone please explain me how do I use the CachingWrapperFilter? There is a bit of it demonstrated in Lucene in Action. Here are some snippets that (sort of) describe it: http://www.lucenebook.com/search?query=CachingWrapperFilter You can grab the LIA source code from that site also. > I see that it's built in a decorator way (getting on the > constructor another > filter and decorate it with caching), still I don't see any basic > filter to > be the 'root'. There are two concrete Filters built in to Lucene - QueryFilter and DateFilter. QueryFilter already has built-in caching, but DateFilter does not. CachingWrapperFilter was created to separate caching from the filtering aspects, allowing filters to free themselves from having to cache themselves. > On the tests I saw there is a MockFilter, but I couldn't find it on > the > jars. We don't package up the test code as a JAR file - but if you check out Lucene's code from Subversion you'll find it under src/test > Do I need to create such a filter myself? Does anyone using the > cache needs > to create his own dummy class? This all depends on what you're trying to do. A Filter is used for long standing constraints of the document search space. You would not use a "dummy" class, but rather a real filter such as the ones just mentioned. And whether you use the CachingWrapperFilter depends on which filter you choose or if you create a custom one. The Lucene in Action source code has an example of a custom Filter. Erik --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
