org.hibernate.search.filter.impl

Class CachingWrapperQuery

java.lang.Object

org.apache.lucene.search.Query

org.hibernate.search.filter.impl.CachingWrapperQuery

All Implemented Interfaces:

Cloneable

public class CachingWrapperQuery
extends org.apache.lucene.search.Query
implements Cloneable

A slightly different version of Lucene's original CachingWrapperQuery which uses SoftReferences instead of WeakReferences in order to cache the filter DocIdSet.

Author:

Hardy Ferentschik, Sanne Grinovero

See Also:

CachingWrapperQuery, HSEARCH-174

Field Summary

Fields

Modifier and Type	Field and Description
static int	DEFAULT_SIZE

Constructor Summary

Constructors

Constructor and Description
CachingWrapperQuery(org.apache.lucene.search.Query query)
CachingWrapperQuery(org.apache.lucene.search.Query query, int size)

Method Summary

Modifier and Type	Method and Description
protected org.apache.lucene.search.DocIdSet	cacheImpl(org.apache.lucene.search.DocIdSetIterator iterator, org.apache.lucene.index.LeafReader reader) Default cache implementation: uses RoaringDocIdSet.
org.apache.lucene.search.Weight	createWeight(org.apache.lucene.search.IndexSearcher searcher, boolean needsScores)
boolean	equals(Object o)
org.apache.lucene.search.Query	getQuery() Gets the contained query.
int	hashCode()
org.apache.lucene.search.Query	rewrite(org.apache.lucene.index.IndexReader reader)
String	toString(String field)

Methods inherited from class org.apache.lucene.search.Query

clone, getBoost, setBoost, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

DEFAULT_SIZE

public static final int DEFAULT_SIZE

See Also:

Constant Field Values

Constructor Detail

CachingWrapperQuery

public CachingWrapperQuery(org.apache.lucene.search.Query query)

Parameters:

query - Query to cache results of

CachingWrapperQuery

public CachingWrapperQuery(org.apache.lucene.search.Query query,
                           int size)

Parameters:

query - Query to cache results of

size - soft reference size (gets multiplied by HARD_TO_SOFT_RATIO.

Method Detail

getQuery

public org.apache.lucene.search.Query getQuery()

Gets the contained query.

Returns:

the contained query.

cacheImpl

protected org.apache.lucene.search.DocIdSet cacheImpl(org.apache.lucene.search.DocIdSetIterator iterator,
                                                      org.apache.lucene.index.LeafReader reader)
                                               throws IOException

Default cache implementation: uses RoaringDocIdSet.

Throws:

IOException

rewrite

public org.apache.lucene.search.Query rewrite(org.apache.lucene.index.IndexReader reader)
                                       throws IOException

Overrides:

rewrite in class org.apache.lucene.search.Query

Throws:

IOException

createWeight

public org.apache.lucene.search.Weight createWeight(org.apache.lucene.search.IndexSearcher searcher,
                                                    boolean needsScores)
                                             throws IOException

Overrides:

createWeight in class org.apache.lucene.search.Query

Throws:

IOException

toString

public String toString(String field)

Specified by:

toString in class org.apache.lucene.search.Query

equals

public boolean equals(Object o)

Overrides:

equals in class org.apache.lucene.search.Query

hashCode

public int hashCode()

Overrides:

hashCode in class org.apache.lucene.search.Query