org.apache.lucene.search.suggest
Class DocumentDictionary.DocumentInputIterator

java.lang.Object
  org.apache.lucene.search.suggest.DocumentDictionary.DocumentInputIterator

All Implemented Interfaces:

InputIterator, BytesRefIterator

Enclosing class:

DocumentDictionary

protected class DocumentDictionary.DocumentInputIterator
extends Object
implements InputIterator

Implements InputIterator from stored fields.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.lucene.search.suggest.InputIterator

InputIterator.InputIteratorWrapper

Field Summary

Fields inherited from interface org.apache.lucene.search.suggest.InputIterator

EMPTY

Constructor Summary

DocumentDictionary.DocumentInputIterator(boolean hasPayloads)
Creates an iterator over term, weight and payload fields from the lucene index.

Method Summary

Comparator<BytesRef>	getComparator()
protected long	getWeight(Document doc, int docId) Returns the value of the weightField for the current document.
boolean	hasPayloads() Returns true if the iterator has payloads
BytesRef	next()
BytesRef	payload() An arbitrary byte[] to record per suggestion.
long	weight() A term's weight, higher numbers mean better suggestions.

Methods inherited from class java.lang.Object

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

Constructor Detail

DocumentDictionary.DocumentInputIterator

public DocumentDictionary.DocumentInputIterator(boolean hasPayloads)
                                         throws IOException

Creates an iterator over term, weight and payload fields from the lucene index. setting withPayload to false, implies an iterator over only term and weight.

Throws:

IOException

Method Detail

weight

public long weight()

Description copied from interface: InputIterator

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

Specified by:

weight in interface InputIterator

getComparator

public Comparator<BytesRef> getComparator()

Specified by:

getComparator in interface BytesRefIterator

next

public BytesRef next()
              throws IOException

Specified by:

next in interface BytesRefIterator

Throws:

IOException

payload

public BytesRef payload()

Description copied from interface: InputIterator

An arbitrary byte[] to record per suggestion. See Lookup.LookupResult.payload to retrieve the payload for each suggestion.

Specified by:

payload in interface InputIterator

hasPayloads

public boolean hasPayloads()

Description copied from interface: InputIterator

Returns true if the iterator has payloads

Specified by:

hasPayloads in interface InputIterator

getWeight

protected long getWeight(Document doc,
                         int docId)

Returns the value of the weightField for the current document. Retrieves the value for the weightField if its stored (using doc) or if its indexed as NumericDocValues (using docId) for the document. If no value is found, then the weight is 0.