/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* JBoss, Home of Professional Open Source
* Copyright 2011 Red Hat Inc. and/or its affiliates and other contributors
* as indicated by the @authors tag. All rights reserved.
* See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License, v. 2.1.
* This program is distributed in the hope that it will be useful, but WITHOUT A
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public License,
* v.2.1 along with this distribution; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
package org.hibernate.search.indexes.impl;
import java.util.HashMap;
import java.util.TreeSet;
import org.apache.lucene.index.IndexReader;
import org.hibernate.search.engine.spi.EntityIndexBinder;
import org.hibernate.search.impl.ImmutableSearchFactory;
import org.hibernate.search.indexes.IndexReaderAccessor;
import org.hibernate.search.indexes.spi.IndexManager;
import org.hibernate.search.reader.impl.MultiReaderFactory;
import org.hibernate.search.util.logging.impl.Log;
import org.hibernate.search.util.logging.impl.LoggerFactory;
/**
* Provides access to IndexReaders.
* IndexReaders opened through this service need to be closed using this service.
*
* @author Sanne Grinovero <sanne@hibernate.org> (C) 2011 Red Hat Inc.
*/
public class DefaultIndexReaderAccessor implements IndexReaderAccessor {
private static final Log log = LoggerFactory.make();
private final ImmutableSearchFactory searchFactory;
public DefaultIndexReaderAccessor(ImmutableSearchFactory immutableSearchFactory) {
this.searchFactory = immutableSearchFactory;
}
@Override
public void close(IndexReader indexReader) {
MultiReaderFactory.closeReader( indexReader );
}
@Override
public IndexReader open(Class<?>... entities) {
if(entities.length == 0) {
throw log.needAtLeastOneIndexedEntityType();
}
HashMap<String, IndexManager> indexManagers = new HashMap<String, IndexManager>();
for ( Class<?> type : entities ) {
EntityIndexBinder entityIndexBinding = searchFactory.getSafeIndexBindingForEntity( type );
IndexManager[] indexManagersForAllShards = entityIndexBinding.getSelectionStrategy()
.getIndexManagersForAllShards();
for ( IndexManager im : indexManagersForAllShards ) {
indexManagers.put( im.getIndexName(), im );
}
}
IndexManager[] uniqueIndexManagers = indexManagers.values().toArray( new IndexManager[indexManagers.size()] );
return MultiReaderFactory.openReader( uniqueIndexManagers );
}
@Override
public IndexReader open(String... indexNames) {
TreeSet<String> names = new TreeSet<String>();
for ( String name : indexNames ) {
if ( name != null ) {
names.add( name );
}
}
final int size = names.size();
if ( size == 0 ) {
throw log.needAtLeastOneIndexName();
}
String[] indexManagerNames = names.toArray( new String[size] );
IndexManagerHolder managerSource = searchFactory.getAllIndexesManager();
IndexManager[] managers = new IndexManager[size];
for ( int i = 0; i < size; i++ ) {
String indexName = indexManagerNames[i];
managers[i] = managerSource.getIndexManager( indexName );
if ( managers[i] == null ) {
throw log.requestedIndexNotDefined( indexName );
}
}
return MultiReaderFactory.openReader( managers );
}
}