search for: isbookavail

...ation about documents - slow changing and fast changing properties. We index documents by slow changing properties (content) using Ferret directly, and it works rather well. But now we would like to filter the searches by a fast-changing property, that is calculated separately, e.g. "isBookAvailable". The idea is to put this property in another Ferret index (which gets rebuilt very frequently really fast), together with unique document id (we have external unique id for each document) and then somehow "join" the original index with this index to provide final results...