: during several thoughts about how to make scoring in Solr better, a lot of : times I wished that I can use precomputed data to influence score. However, : this data could change whenever there occurs a commit. That's why I can't : work with preprocessing while indexing the documents. I hope to solve this : problem with the help of a function Query that stores computed metadata in a : cache, if it isn't already computed.
I'm not entirely sure i undestand what you're asking, but have you looked at ExternalFileField ? ... what you are describing sounds an awful lot like using it in a FunctionQuery : I will implement a method that instantiates a SolrJ-client to send some : queries to the index. The responsed data is important to compute the needed : metadata for my functionQuery. : Once the metadata is computed, I want to store it in a SolrCache. : : - Here is my first question: I can't find any code-snippet that shows how to : deal with SolrCache - do you know some classes that implement caches which : get renewed after updating (and commiting) the index? : : - Is it possible to create this cache while Solr is starting? If not, I : would think of a cronJob or something like that to warmUp the cache when : Solr starts the first time. I don't really understand wherey you intend SolrJ to fit into this picture, but you can declare any custom instances of a SolrCache that you want in your solrconfig.xml (there is an example commented out in the example solrconfig.xml -- look for "myUserCache") which you can then access in any custom plugin you want using SolrIndexSearcher (getCache, cacheInsert, cacheLookup, etc... any of hte cache methods that take a cacheName) You can also configure a CacheRegenerator with whatever logic you want for populating a new cache instance based on the contents of the old cache instance whenever a newSearcher is warmed -- this is all configured in solrconfig.xml As far as pre-populating the cacce on startup -- you can do that by implementing a SolrEventListener that implements newSearcher and registering in solrconfig.xml it to only recieve "firstSearcher" events (triggered once on startup). I've implemented some custom metadata caches (for driving complex faceting) like this, but i'm afraid i can't share the code examples. -Hoss --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
