Class CachingWrapperFilter

Wraps another Filter's result and caches it. The purpose is to allow filters to simply filter, and then wrap with this class to add caching.

Inheritance
System.Object
Filter
CachingWrapperFilter
Inherited Members
Assembly: DistributedLucene.Net.dll
Syntax
public class CachingWrapperFilter : Filter

Constructors

Name Description
CachingWrapperFilter(Filter)

Wraps another filter's result and caches it.

Fields

Name Description
EMPTY_DOCIDSET

An empty DocIdSet instance

Properties

Name Description
Filter

Gets the contained filter.

Methods

Name Description
CacheImpl(DocIdSetIterator, AtomicReader)

Default cache implementation: uses WAH8DocIdSet.
DocIdSetToCache(DocIdSet, AtomicReader)

Provide the DocIdSet to be cached, using the DocIdSet provided by the wrapped Filter.

This implementation returns the given DocIdSet, if IsCacheable returns true, else it calls CacheImpl(DocIdSetIterator, AtomicReader)

Note: this method returns EMPTY_DOCIDSET if the given docIdSet is null or if GetIterator() return null. The empty instance is use as a placeholder in the cache instead of the null value.
Equals(Object)
GetDocIdSet(AtomicReaderContext, IBits)
GetHashCode()
GetSizeInBytes()

Returns total byte size used by cached filters.

ToString()

Extension Methods