Package org.terrier.realtime.memory

Provides MemoryIndex structures. Memory indices are wholly stored in memory, are updatable and can (optionally) be written to disk.

Interface Summary

Interface	Description
MemoryPointer	Pointer type for use with MemoryIndex.
MemoryPostingList	A memory posting list interface
MetaIndexMap	An interface defining a meta index structure

Class Summary

Class	Description
MemoryCollectionStatistics	This class provides basic statistics in memory for a collection of documents, such as the average length of documents, or the total number of documents in the collection.
MemoryCompressedMetaIndex	An in-memory version of a Meta-data index.
MemoryDirectIndex	This is a DirectIndex structure that is held fully in memory, it is based upon the MemoryInverted class.
MemoryDirectIterablePosting	Provides iteration capabilities over a Memory Direct Posting
MemoryDocumentIndex	An in-memory version of the Document index.
MemoryDocumentIndexMap	This class is a special variant of the Memory index class where the Document index is backed by a fast mapping structure in memory.
MemoryIndex	An index held in fully memory.
MemoryIndex.Loader
MemoryInvertedIndex	A basic inverted file implementation for use with MemoryIndex structures.
MemoryIterablePosting	A postings list implementation held fully in memory.
MemoryLexicon	The lexicon structure for a MemoryIndex.
MemoryLexiconEntry	A lexicon entry stored in a MemoryLexicon.
MemoryMetaIndex	An in-memory version of a Meta-data index.
MemoryMetaIndexMap	A memory meta index structure that supports fast look-ups via a map.
WTreeMap<K,V>	Wrapper around TreeMap implementing OrderedMap.