org.hibernate.search.query.fieldcache.impl

Class DoubleFieldLoadingStrategy

java.lang.Object

org.hibernate.search.query.fieldcache.impl.DoubleFieldLoadingStrategy

All Implemented Interfaces:

FieldLoadingStrategy

public final class DoubleFieldLoadingStrategy
extends Object
implements FieldLoadingStrategy

We need a collection of similar implementations, one per each FieldCache.DEFAULT.accessmethod to be able to deal with arrays of primitive values without autoboxing all of them.

Author:

Sanne Grinovero (C) 2011 Red Hat Inc.

See Also:

FieldLoadingStrategy

Constructor Summary

Constructors

Constructor and Description
DoubleFieldLoadingStrategy(String fieldName)

Method Summary

Methods

Modifier and Type	Method and Description
Double	collect(int relativeDocId) The collector wants to pick a specific element from the cache.
void	loadNewCacheValues(org.apache.lucene.index.IndexReader reader) A new IndexReader is opened - implementations usually need this to load the next array of cached data.

Methods inherited from class java.lang.Object

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

Constructor Detail

DoubleFieldLoadingStrategy

public DoubleFieldLoadingStrategy(String fieldName)

Method Detail

loadNewCacheValues

public void loadNewCacheValues(org.apache.lucene.index.IndexReader reader)
                        throws IOException

Description copied from interface: FieldLoadingStrategy

A new IndexReader is opened - implementations usually need this to load the next array of cached data.

Specified by:

loadNewCacheValues in interface FieldLoadingStrategy

Parameters:

reader - the IndexReader for which to load the new cache values

Throws:

IOException - in case an error occurs reading the cache values from the index

collect

public Double collect(int relativeDocId)

Description copied from interface: FieldLoadingStrategy

The collector wants to pick a specific element from the cache. Only at this point we convert primitives into an object if needed.

Specified by:

collect in interface FieldLoadingStrategy

Parameters:

relativeDocId - the doc id relative to the current reader

Returns:

the cached field value for the document with the relative id relativeDocId.