org.hibernate.search.indexes.impl
Class DefaultIndexReaderAccessor

java.lang.Object
  org.hibernate.search.indexes.impl.DefaultIndexReaderAccessor

All Implemented Interfaces:

IndexReaderAccessor

public class DefaultIndexReaderAccessor
extends Object
implements IndexReaderAccessor

Provides access to IndexReaders. IndexReaders opened through this service need to be closed using this service.

Author:

Sanne Grinovero (C) 2011 Red Hat Inc.

Constructor Summary

DefaultIndexReaderAccessor(ImmutableSearchFactory immutableSearchFactory)

Method Summary

void	close(org.apache.lucene.index.IndexReader indexReader) Closes IndexReader instances obtained using IndexReaderAccessor.open(Class...)
org.apache.lucene.index.IndexReader	open(Class<?>... entities) Opens an IndexReader on all indexes containing the entities passed as parameter.
org.apache.lucene.index.IndexReader	open(String... indexNames) Opens an IndexReader on all named indexes.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultIndexReaderAccessor

public DefaultIndexReaderAccessor(ImmutableSearchFactory immutableSearchFactory)

Method Detail

close

public void close(org.apache.lucene.index.IndexReader indexReader)

Description copied from interface: IndexReaderAccessor

Closes IndexReader instances obtained using IndexReaderAccessor.open(Class...)

Specified by:

close in interface IndexReaderAccessor

Parameters:

indexReader - the IndexReader to be closed

open

public org.apache.lucene.index.IndexReader open(Class<?>... entities)

Description copied from interface: IndexReaderAccessor

Opens an IndexReader on all indexes containing the entities passed as parameter. In the simplest case passing a single entity will map to a single index; if the entity uses a sharding strategy or if multiple entities using different index names are selected, the single IndexReader will act as a MultiReader on the aggregate of these indexes. This MultiReader is not filtered by Hibernate Search, so it might contain information relevant to different types as well.

The returned IndexReader is read only; writing directly to the index is discouraged. If you need to write to the index use the SearchFactoryIntegrator.getWorker() to queue change operations to the backend.

The IndexReader should not be closed in other ways except being returned to this instance via IndexReaderAccessor.close(IndexReader).

Specified by:

open in interface IndexReaderAccessor

Parameters:

entities - the entity types for which to return a (multi)reader

Returns:

an IndexReader containing at least all listed entities

open

public org.apache.lucene.index.IndexReader open(String... indexNames)

Description copied from interface: IndexReaderAccessor

Opens an IndexReader on all named indexes. A single name can be provided, or multiple. In the case of multiple names it still returns a single IndexReader instance, but this will make it possible to run queries on the combination of each index.

Specified by:

open in interface IndexReaderAccessor

Parameters:

indexNames - At least one IndexManager name.

Returns:

an IndexReader instance.