/*
 * 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.cassandra.spark.data;

import java.io.IOException;
import java.util.Set;

import org.apache.cassandra.spark.reader.SparkSSTableReader;

public abstract class SSTablesSupplier
{
    /**
     * Interface that opens a given SSTable and returns an SparkSSTableReader
     *
     * @param <T> SparkSSTableReader
     */
    public interface ReaderOpener<T extends SparkSSTableReader>
    {
        T openReader(SSTable ssTable, boolean isRepairPrimary) throws IOException;
    }

    /**
     * Open an SparkSSTableReader for each SSTable
     *
     * @param readerOpener open SparkSSTableReader for a given SSTable
     * @return set of open SparkSSTableReaders to pass into CompactionIterator
     */
    public abstract <T extends SparkSSTableReader> Set<T> openAll(ReaderOpener<T> readerOpener);
}
