Package org.apache.lucene.search.comparators

Class NumericComparator.CompetitiveDISIBuilder

java.lang.Object

org.apache.lucene.search.comparators.NumericComparator.CompetitiveDISIBuilder

Enclosing class:

NumericComparator<T extends Number>

protected abstract class NumericComparator.CompetitiveDISIBuilder
extends Object

Constructs a competitive iterator which can be updated during collection

Field Summary

Fields

Modifier and Type	Field	Description
protected final NumericComparator<T>.NumericLeafComparator	leafComparator	The LeafComparator for the current segment
protected final int	maxDoc	maxDoc of the current segment
protected long	maxValueAsLong	The current maximum value encoded as a long
protected long	minValueAsLong	The current minimum value encoded as a long

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	CompetitiveDISIBuilder(NumericComparator<T>.NumericLeafComparator leafComparator)	Create a new CompetitiveDISIBuilder

Method Summary

Modifier and Type	Method	Description
protected abstract void	doUpdateCompetitiveIterator()	Build a new DocIdSetIterator to use as a competitive iterator, if the new iterator will filter out enough documents.
protected abstract boolean	hasMissingDocs()	Are there documents in this segment with no value for the comparator to use
protected final void	updateCompetitiveIterator(DocIdSetIterator iterator)	Use a new iterator as the competitive iterator for collection

Methods inherited from class java.lang.Object

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

Field Details

maxDoc

protected final int maxDoc

maxDoc of the current segment

leafComparator

protected final NumericComparator<T extends Number>.NumericLeafComparator leafComparator

The LeafComparator for the current segment

minValueAsLong

protected long minValueAsLong

The current minimum value encoded as a long

maxValueAsLong

protected long maxValueAsLong

The current maximum value encoded as a long

Constructor Details

CompetitiveDISIBuilder

protected CompetitiveDISIBuilder(NumericComparator<T>.NumericLeafComparator leafComparator)

Create a new CompetitiveDISIBuilder

Method Details

hasMissingDocs

protected abstract boolean hasMissingDocs()

Are there documents in this segment with no value for the comparator to use

doUpdateCompetitiveIterator

protected abstract void doUpdateCompetitiveIterator()
                                             throws IOException

Build a new DocIdSetIterator to use as a competitive iterator, if the new iterator will filter out enough documents. Implementations should pass their newly built iterators to updateCompetitiveIterator(DocIdSetIterator)

Throws:

IOException

updateCompetitiveIterator

protected final void updateCompetitiveIterator(DocIdSetIterator iterator)

Use a new iterator as the competitive iterator for collection