org.apache.lucene.index

Class DocIDMerger<T extends DocIDMerger.Sub>

java.lang.Object

org.apache.lucene.index.DocIDMerger<T>

public class DocIDMerger<T extends DocIDMerger.Sub>
extends Object

Utility class to help merging documents from sub-readers according to either simple concatenated (unsorted) order, or by a specified index-time sort, skipping deleted documents and remapping non-deleted documents.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DocIDMerger.Sub Represents one sub-reader being merged

Constructor Summary

Constructors

Constructor and Description
DocIDMerger(List<T> subs, boolean indexIsSorted) Construct this from the provided subs
DocIDMerger(List<T> subs, int maxCount, boolean indexIsSorted) Construct this from the provided subs, specifying the maximum sub count

Method Summary

Modifier and Type	Method and Description
T	next() Returns null when done
void	reset() Reuse API, currently only used by postings during merge

Methods inherited from class java.lang.Object

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

Constructor Detail

DocIDMerger

public DocIDMerger(List<T> subs,
                   int maxCount,
                   boolean indexIsSorted)

Construct this from the provided subs, specifying the maximum sub count

DocIDMerger

public DocIDMerger(List<T> subs,
                   boolean indexIsSorted)

Construct this from the provided subs

Method Detail

reset

public void reset()

Reuse API, currently only used by postings during merge

next

public T next()

Returns null when done