org.apache.lucene.search.suggest

Class BufferingTermFreqIteratorWrapper

java.lang.Object

org.apache.lucene.search.suggest.BufferingTermFreqIteratorWrapper

All Implemented Interfaces:

TermFreqIterator, BytesRefIterator

public class BufferingTermFreqIteratorWrapper
extends Object
implements TermFreqIterator

This wrapper buffers incoming elements.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.lucene.search.spell.TermFreqIterator

TermFreqIterator.TermFreqIteratorWrapper

Field Summary

Fields inherited from interface org.apache.lucene.util.BytesRefIterator

EMPTY

Constructor Summary

Constructors

Constructor and Description
BufferingTermFreqIteratorWrapper(TermFreqIterator source) Creates a new iterator, buffering entries from the specified iterator

Method Summary

Modifier and Type	Method and Description
Comparator<BytesRef>	getComparator() Return the BytesRef Comparator used to sort terms provided by the iterator.
BytesRef	next() Increments the iteration to the next BytesRef in the iterator.
long	weight() A term's weight, higher numbers mean better suggestions.

Methods inherited from class java.lang.Object

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

Constructor Detail

BufferingTermFreqIteratorWrapper

public BufferingTermFreqIteratorWrapper(TermFreqIterator source)
                                 throws IOException

Creates a new iterator, buffering entries from the specified iterator

Throws:

IOException

Method Detail

weight

public long weight()

Description copied from interface: TermFreqIterator

A term's weight, higher numbers mean better suggestions.

Specified by:

weight in interface TermFreqIterator

next

public BytesRef next()
              throws IOException

Description copied from interface: BytesRefIterator

Increments the iteration to the next BytesRef in the iterator. Returns the resulting BytesRef or null if the end of the iterator is reached. The returned BytesRef may be re-used across calls to next. After this method returns null, do not call it again: the results are undefined.

Specified by:

next in interface BytesRefIterator

Returns:

the next BytesRef in the iterator or null if the end of the iterator is reached.

Throws:

IOException - If there is a low-level I/O error.

getComparator

public Comparator<BytesRef> getComparator()

Description copied from interface: BytesRefIterator

Return the BytesRef Comparator used to sort terms provided by the iterator. This may return null if there are no items or the iterator is not sorted. Callers may invoke this method many times, so it's best to cache a single instance & reuse it.

Specified by:

getComparator in interface BytesRefIterator