src/java/org/apache/cassandra/db/compaction/ICompactionScanner.java

/**
 * 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.db.compaction;

import org.apache.cassandra.db.columniterator.OnDiskAtomIterator;
import org.apache.cassandra.utils.CloseableIterator;

/**
 * An ICompactionScanner is an abstraction allowing multiple SSTableScanners to be
 * chained together under the hood.  See LeveledCompactionStrategy.getScanners.
 */
public interface ICompactionScanner extends CloseableIterator<OnDiskAtomIterator>
{
    public long getLengthInBytes();
    public long getCurrentPosition();
    public String getBackingFiles();
}