Class FilterDirectoryReader.DelegatingCacheHelper

  • All Implemented Interfaces:
    IndexReader.CacheHelper
    Enclosing class:
    FilterDirectoryReader

    protected static class FilterDirectoryReader.DelegatingCacheHelper
    extends Object
    implements IndexReader.CacheHelper
    A DelegatingCacheHelper is a CacheHelper specialization for implementing long-lived caching behaviour for FilterDirectoryReader subclasses. It uses a unique CacheKey for the purpose of implementing the onClose listener delegation for the reader.