Package com.yahoo.search.predicate.index

Class CachedPostingListCounter

java.lang.Object

com.yahoo.search.predicate.index.CachedPostingListCounter

public class CachedPostingListCounter
extends Object

Counts the number of posting lists per document id. Caches the most expensive posting list in a bit vector.

Author:

bjorncs

Constructor Summary

Constructors

Constructor	Description
CachedPostingListCounter(int nDocuments)

Method Summary

Modifier and Type	Method	Description
void	countPostingListsPerDocument(List<PostingList> postingLists, byte[] nPostingListsForDocument)
CachedPostingListCounter	rebuildCache()
void	registerUsage(List<PostingList> postingLists)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CachedPostingListCounter

public CachedPostingListCounter(int nDocuments)

Method Detail

registerUsage

public void registerUsage(List<PostingList> postingLists)

countPostingListsPerDocument

public void countPostingListsPerDocument(List<PostingList> postingLists,
                                         byte[] nPostingListsForDocument)

rebuildCache

public CachedPostingListCounter rebuildCache()