org.apache.lucene.codecs.lucene40

Class Lucene40DocValuesProducer

java.lang.Object

org.apache.lucene.codecs.PerDocProducer

org.apache.lucene.codecs.PerDocProducerBase

org.apache.lucene.codecs.lucene40.Lucene40DocValuesProducer

All Implemented Interfaces:

Closeable

Direct Known Subclasses:

Lucene40NormsFormat.Lucene40NormsDocValuesProducer

public class Lucene40DocValuesProducer
extends PerDocProducerBase

Lucene 4.0 PerDocProducer implementation that uses compound file.

See Also:

Lucene40DocValuesFormat

WARNING: This API is experimental and might change in incompatible ways in the next release.

Field Summary

Fields

Modifier and Type	Field and Description
protected TreeMap<String,DocValues>	docValues Maps field name to DocValues instance.

Constructor Summary

Constructors

Constructor and Description
Lucene40DocValuesProducer(SegmentReadState state, String segmentSuffix) Creates a new Lucene40DocValuesProducer instance and loads all DocValues instances for this segment and codec.

Method Summary

Methods

Modifier and Type	Method and Description
protected void	closeInternal(Collection<? extends Closeable> closeables) Closes provided Closables.
protected Map<String,DocValues>	docValues() Returns a map, mapping field names to doc values.
protected DocValues	loadDocValues(int docCount, Directory dir, String id, DocValues.Type type, IOContext context) Loads a DocValues instance depending on the given DocValues.Type.

Methods inherited from class org.apache.lucene.codecs.PerDocProducerBase

anyDocValuesFields, canLoad, close, docValues, docValuesId, getComparator, getDocValuesType, load

Methods inherited from class java.lang.Object

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

Field Detail

docValues

protected final TreeMap<String,DocValues> docValues

Maps field name to DocValues instance.

Constructor Detail

Lucene40DocValuesProducer

public Lucene40DocValuesProducer(SegmentReadState state,
                         String segmentSuffix)
                          throws IOException

Creates a new Lucene40DocValuesProducer instance and loads all DocValues instances for this segment and codec.

Throws:

IOException

Method Detail

docValues

protected Map<String,DocValues> docValues()

Description copied from class: PerDocProducerBase

Returns a map, mapping field names to doc values.

Specified by:

docValues in class PerDocProducerBase

closeInternal

protected void closeInternal(Collection<? extends Closeable> closeables)
                      throws IOException

Description copied from class: PerDocProducerBase

Closes provided Closables.

Specified by:

closeInternal in class PerDocProducerBase

Throws:

IOException

loadDocValues

protected DocValues loadDocValues(int docCount,
                      Directory dir,
                      String id,
                      DocValues.Type type,
                      IOContext context)
                           throws IOException

Description copied from class: PerDocProducerBase

Loads a DocValues instance depending on the given DocValues.Type. Codecs that use different implementations for a certain DocValues.Type can simply override this method and return their custom implementations.

Specified by:

loadDocValues in class PerDocProducerBase

Parameters:

docCount - number of documents in the segment

dir - the Directory to load the DocValues from

id - the unique file ID within the segment

type - the type to load

Returns:

a DocValues instance for the given type

Throws:

IOException - if an IOException occurs