Class DocIdSet

A DocIdSet contains a set of doc ids. Implementing classes must only implement Iterator() to provide access to the set.

System.Object

DocIdSet

public abstract class DocIdSet : object

Name	Description
EMPTY_DOCIDSET	An empty DocIdSet instance for easy use, e.g. in Filters that hit no documents.

Name	Description
IsCacheable	This method is a hint for CachingWrapperFilter, if this `DocIdSet` should be cached without copying it into a BitSet. The default is to return `false`. If you have an own `DocIdSet` implementation that does its iteration very effective and fast without doing disk I/O, override this method and return true.

Name	Description
Iterator()	Provides a DocIdSetIterator to access the set. This implementation can return `null` or `EMPTY_DOCIDSET.Iterator()` if there are no docs that match.