org.neo4j.kernel.api.impl.index.collector

Class DocValuesCollector.LongValuesIterator

java.lang.Object

org.neo4j.collection.primitive.PrimitiveLongCollections.PrimitiveLongBaseIterator

org.neo4j.kernel.api.impl.index.collector.ValuesIterator

org.neo4j.kernel.api.impl.index.collector.DocValuesCollector.LongValuesIterator

All Implemented Interfaces:

org.neo4j.collection.primitive.PrimitiveLongIterator, DocValuesAccess

Enclosing class:

DocValuesCollector

public static class DocValuesCollector.LongValuesIterator
extends ValuesIterator

Iterates over all per-segment DocValuesCollector.MatchingDocs. Supports two kinds of lookups. One, iterate over all long values of the given field (constructor argument). Two, lookup a value for the current doc in a sidecar NumericDocValues field. That is, this iterator has a main field, that drives the iteration and allow for lookups in other, secondary fields based on the current document of the main iteration. Lookups from this class are not thread-safe. Races can happen when the segment barrier is crossed; one thread might think it is reading from one segment while another thread has already advanced this Iterator to the next segment, having raced the first thread.

Field Summary

Fields inherited from class org.neo4j.kernel.api.impl.index.collector.ValuesIterator

EMPTY

Constructor Summary

Constructors

Constructor and Description
LongValuesIterator(Iterable<org.neo4j.kernel.api.impl.index.collector.DocValuesCollector.MatchingDocs> allMatchingDocs, int totalHits, String field)

Method Summary

Modifier and Type	Method and Description
long	current()
long	getValue(String field)

Methods inherited from class org.neo4j.kernel.api.impl.index.collector.ValuesIterator

remaining

Methods inherited from class org.neo4j.collection.primitive.PrimitiveLongCollections.PrimitiveLongBaseIterator

hasNext, next

Methods inherited from class java.lang.Object

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

Constructor Detail

LongValuesIterator

public LongValuesIterator(Iterable<org.neo4j.kernel.api.impl.index.collector.DocValuesCollector.MatchingDocs> allMatchingDocs,
                          int totalHits,
                          String field)

Parameters:

allMatchingDocs - all DocValuesCollector.MatchingDocs across all segments

totalHits - the total number of hits across all segments

field - the main field, whose values drive the iteration

Method Detail

current

public long current()

Returns:

the current value of the main field that is driving the values.

getValue

public long getValue(String field)

Returns:

the value of an additional sidecar field.