/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.servicemix.jbi.audit.lucene;

import java.io.IOException;

import org.apache.lucene.search.IndexSearcher;

/**
 * Lucene Callback Interface. Used on searching to be executed on synchronized
 * blocks.
 * 
 * @author George Gastaldi
 * @since 2.1
 * @version $Revision: 550578 $
 */
public interface LuceneCallback {

    /**
     * Called by the LuceneIndexer
     * 
     * @param is
     *            IndexSearcher provided by the indexer
     * @return an object from the query
     * @throws IOException
     *             if an error occurs during opening/searching of the index
     */
    Object doCallback(IndexSearcher is) throws IOException;
}
