Package org.apache.lucene.index
Class MultiFields
java.lang.Object
org.apache.lucene.index.Fields
org.apache.lucene.index.MultiFields
Provides a single
Fields term index view over an IndexReader. This is useful when
you're interacting with an IndexReader implementation that consists of sequential
sub-readers (eg DirectoryReader or MultiReader) and you must treat it as a LeafReader.
NOTE: for composite readers, you'll get better performance by gathering the sub readers
using IndexReader.getContext() to get the atomic leaves and then operate per-LeafReader,
instead of using this class.
- NOTE: This API is for internal purposes only and might change in incompatible ways in the next release.
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Field Summary
Fields inherited from class org.apache.lucene.index.Fields
EMPTY_ARRAY -
Constructor Summary
Constructors -
Method Summary
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitMethods inherited from interface java.lang.Iterable
forEach, spliterator
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Constructor Details
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MultiFields
Sole constructor.
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Method Details
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iterator
Description copied from class:FieldsReturns an iterator that will step through all fields names. This will not return null. -
terms
Description copied from class:FieldsGet theTermsfor this field. This will return null if the field does not exist.- Specified by:
termsin classFields- Throws:
IOException
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size
public int size()Description copied from class:FieldsReturns 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.
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