org.apache.lucene.search

Class FieldComparator.NumericComparator<T extends Number>

java.lang.Object

org.apache.lucene.search.FieldComparator<T>

org.apache.lucene.search.SimpleFieldComparator<T>

org.apache.lucene.search.FieldComparator.NumericComparator<T>

All Implemented Interfaces:

LeafFieldComparator

Direct Known Subclasses:

FieldComparator.DoubleComparator, FieldComparator.FloatComparator, FieldComparator.IntComparator, FieldComparator.LongComparator

Enclosing class:

FieldComparator<T>

public abstract static class FieldComparator.NumericComparator<T extends Number>
extends SimpleFieldComparator<T>

Base FieldComparator class for numeric types

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.lucene.search.FieldComparator

FieldComparator.DocComparator, FieldComparator.DoubleComparator, FieldComparator.FloatComparator, FieldComparator.IntComparator, FieldComparator.LongComparator, FieldComparator.NumericComparator<T extends Number>, FieldComparator.RelevanceComparator, FieldComparator.TermOrdValComparator, FieldComparator.TermValComparator

Field Summary

Fields

Modifier and Type	Field and Description
protected NumericDocValues	currentReaderValues
protected Bits	docsWithField
protected String	field
protected T	missingValue

Constructor Summary

Constructors

Constructor and Description
NumericComparator(String field, T missingValue)

Method Summary

Modifier and Type	Method and Description
protected void	doSetNextReader(LeafReaderContext context) This method is called before collecting context.
protected Bits	getDocsWithValue(LeafReaderContext context, String field) Retrieves a Bits instance representing documents that have a value in this segment.
protected NumericDocValues	getNumericDocValues(LeafReaderContext context, String field) Retrieves the NumericDocValues for the field in this segment

Methods inherited from class org.apache.lucene.search.SimpleFieldComparator

getLeafComparator, setScorer

Methods inherited from class org.apache.lucene.search.FieldComparator

compare, compareValues, setTopValue, value

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.lucene.search.LeafFieldComparator

compareBottom, compareTop, copy, setBottom

Field Detail

missingValue

protected final T extends Number missingValue

field

protected final String field

docsWithField

protected Bits docsWithField

currentReaderValues

protected NumericDocValues currentReaderValues

Constructor Detail

NumericComparator

public NumericComparator(String field,
                         T missingValue)

Method Detail

doSetNextReader

protected void doSetNextReader(LeafReaderContext context)
                        throws IOException

Description copied from class: SimpleFieldComparator

This method is called before collecting context.

Specified by:

doSetNextReader in class SimpleFieldComparator<T extends Number>

Throws:

IOException

getNumericDocValues

protected NumericDocValues getNumericDocValues(LeafReaderContext context,
                                               String field)
                                        throws IOException

Retrieves the NumericDocValues for the field in this segment

Throws:

IOException

getDocsWithValue

protected Bits getDocsWithValue(LeafReaderContext context,
                                String field)
                         throws IOException

Retrieves a Bits instance representing documents that have a value in this segment.

Throws:

IOException