/*
* Copyright 2002-2005 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springmodules.lucene.search.factory;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.MultiSearcher;
import org.apache.lucene.search.Searcher;
import org.apache.lucene.store.Directory;
import org.springmodules.lucene.index.factory.IndexFactory;
/**
* This is the multiple index factory to get searcher instances to search
* informations in several Lucene indexes.
*
* @author Thierry Templier
* @see org.springmodules.lucene.search.factory.SearcherFactory
*/
public class MultipleSearcherFactory extends AbstractMultipleSearcherFactory implements SearcherFactory {
/**
* Construct a new MultipleSearcherFactory for bean usage.
* Note: The Directories have to be set before using the instance.
* This constructor can be used to prepare a MultipleSearcherFactory via a BeanFactory,
* typically setting the Directory via setDirectories.
* @see AbstractMultipleSearcherFactory#setDirectories(List)
*/
public MultipleSearcherFactory() {
}
/**
* Construct a new MultipleSearcherFactory, given Directories to obtain
* a Searcher.
* @param directories Directories to obtain Searcher
*/
public MultipleSearcherFactory(Directory[] directories) {
setDirectories(directories);
}
/**
* Construct a new MultipleSearcherFactory, given IndexFactories to obtain
* a Searcher.
* @param indexFactories IndexFactories to obtain Searcher
*/
public MultipleSearcherFactory(IndexFactory[] indexFactories) {
setIndexFactories(indexFactories);
}
/**
* Construct a new MultipleSearcherFactory, given Directories and
* IndexFactories to obtain a Searcher.
* @param directories Directories to obtain Searcher
* @param indexFactories IndexFactories to obtain Searcher
*/
public MultipleSearcherFactory(Directory[] directories,IndexFactory[] indexFactories) {
setDirectories(directories);
setIndexFactories(indexFactories);
}
/**
* This method creates a new instance of a Searcher on the configured
* indexes.
*
* @return a Searcher instance
* @see org.springmodules.lucene.search.SearcherFactory#getSearcher()
*/
public LuceneSearcher getSearcher() throws IOException {
Searcher[] searchers = createSearchers();
MultiSearcher multiSearcher = new MultiSearcher(searchers);
return new SimpleLuceneSearcher(multiSearcher);
}
}