: Is it possible to get the values from the ValueSource (or from : getFieldCacheCounts) sorted by its natural order (from lowest to : highest values)?
well, an inverted term index is already a data structure listing terms from lowest to highest and the associated documents -- so if you want to iterate from low to high between a range and find matching docs you should just use hte TermEnum -- the whole point of the FieldCache (and FieldCacheSource) is to have a "reverse inverted index" so you can quickly fetch the indexed value if you know the docId. perhaps you should elaborate a little more on what it is you are trying to do so we can help you figure out how to do it more efficinelty ... i know you mentioend computing price ranges in your first message ... but you also didn't post any clear code about that part of your problem, just that the *other* part of your code that iterated over every doc was too slow ... perhaps you shouldn't be iterating over every doc to figure out your ranges .. perhaps you can iterate over the terms themselves? hang on ... rereading your first message i just noticed something i definitely didn't spot before... >> Fairly long: getFieldCacheCounts for the cat field takes ~70 ms >> for the second request, while reading prices takes ~600 ms. ...i clearly missed this, and fixated on your assertion that your reading of field values took longer then the stock methods -- but you're not just comparing the time needed byu different methods, you're also timing different fields. this actually makes a lot of sense since there are probably a lot fewer unique values for the cat field, so there are a lot fewer discrete values to deal with when computing counts. -Hoss
