Returns a BitSet with true for documents which should be permitted in search results, and false for those that should not.

Expert: Resets the counting of unique terms. Do this before executing the filter.

Allows an Object to attempt to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection.

Returns a DocIdSet with documents that should be permitted in search results.

Expert: Return the number of unique terms visited during execution of the filter. If there are many of them, you may consider using another filter type or optimize your total term count in index.

This method is not thread safe, be sure to only call it when no filter is running! If you re-use the same filter instance for another search, be sure to first reset the term counter with {@link #clearTotalNumberOfTerms}.

Gets the Type of the current instance.

Creates a shallow copy of the current Object.

Prints a user-readable version of this query.