org.apache.lucene.index

Class FilterAtomicReader.FilterFields

java.lang.Object

org.apache.lucene.index.Fields

org.apache.lucene.index.FilterAtomicReader.FilterFields

All Implemented Interfaces:

Iterable<String>

Enclosing class:

FilterAtomicReader

public static class FilterAtomicReader.FilterFields
extends Fields

Base class for filtering Fields implementations.

Field Summary

Fields inherited from class org.apache.lucene.index.Fields

EMPTY_ARRAY

Constructor Summary

Constructors

Constructor and Description
FilterFields(Fields in) Creates a new FilterFields.

Method Summary

Modifier and Type	Method and Description
Iterator<String>	iterator() Returns an iterator that will step through all fields names.
int	size() Returns the number of fields or -1 if the number of distinct field names is unknown.
Terms	terms(String field) Get the Terms for this field.

Methods inherited from class org.apache.lucene.index.Fields

getUniqueTermCount

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

FilterFields

public FilterFields(Fields in)

Creates a new FilterFields.

Parameters:

in - the underlying Fields instance.

Method Detail

iterator

public Iterator<String> iterator()

Description copied from class: Fields

Returns an iterator that will step through all fields names. This will not return null.

Specified by:

iterator in interface Iterable<String>

Specified by:

iterator in class Fields

terms

public Terms terms(String field)
            throws IOException

Description copied from class: Fields

Get the Terms for this field. This will return null if the field does not exist.

Specified by:

terms in class Fields

Throws:

IOException

size

public int size()

Description copied from class: Fields

Returns the number of fields or -1 if the number of distinct field names is unknown. If >= 0, Fields.iterator() will return as many field names.

Specified by:

size in class Fields