org.apache.lucene.index
Class DocValues.SourceCache.DirectSourceCache

java.lang.Object
  org.apache.lucene.index.DocValues.SourceCache
      org.apache.lucene.index.DocValues.SourceCache.DirectSourceCache

Enclosing class:

DocValues.SourceCache

public static final class DocValues.SourceCache.DirectSourceCache
extends DocValues.SourceCache

Simple per DocValues instance cache implementation that holds a DocValues.Source a member variable.

If a DocValues.SourceCache.DirectSourceCache instance is closed or invalidated the cached reference are simply set to null

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.lucene.index.DocValues.SourceCache

DocValues.SourceCache.DirectSourceCache

Constructor Summary

DocValues.SourceCache.DirectSourceCache()
Sole constructor.

Method Summary

void	invalidate(DocValues values) Atomically invalidates the cached DocValues.Source instances if any and empties the cache.
DocValues.Source	load(DocValues values) Atomically loads a DocValues.Source into the cache from the given DocValues and returns it iff no other DocValues.Source has already been cached.

Methods inherited from class org.apache.lucene.index.DocValues.SourceCache

close

Methods inherited from class java.lang.Object

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

Constructor Detail

DocValues.SourceCache.DirectSourceCache

public DocValues.SourceCache.DirectSourceCache()

Sole constructor.

Method Detail

load

public DocValues.Source load(DocValues values)
                      throws IOException

Description copied from class: DocValues.SourceCache

Atomically loads a DocValues.Source into the cache from the given DocValues and returns it iff no other DocValues.Source has already been cached. Otherwise the cached source is returned.

This method will not return null

Specified by:

load in class DocValues.SourceCache

Throws:

IOException

invalidate

public void invalidate(DocValues values)

Description copied from class: DocValues.SourceCache

Atomically invalidates the cached DocValues.Source instances if any and empties the cache.

Specified by:

invalidate in class DocValues.SourceCache