| /* |
| * 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.io.sstable; |
| |
| import java.io.IOException; |
| |
| import org.apache.cassandra.cache.IMeasurableMemory; |
| import org.apache.cassandra.db.DeletionTime; |
| import org.apache.cassandra.io.sstable.format.SSTableFormat; |
| import org.apache.cassandra.io.util.DataOutputPlus; |
| |
| /** |
| * The base RowIndexEntry is not stored on disk, only specifies a position in the data file |
| */ |
| public abstract class AbstractRowIndexEntry implements IMeasurableMemory |
| { |
| public final long position; |
| |
| public AbstractRowIndexEntry(long position) |
| { |
| this.position = position; |
| } |
| |
| /** |
| * Row position in a data file |
| */ |
| public long getPosition() |
| { |
| return position; |
| } |
| |
| /** |
| * @return true if this index entry contains the row-level tombstone and column summary. Otherwise, |
| * caller should fetch these from the row header. |
| */ |
| public boolean isIndexed() |
| { |
| return blockCount() > 1; |
| } |
| |
| public DeletionTime deletionTime() |
| { |
| throw new UnsupportedOperationException(); |
| } |
| |
| public int blockCount() |
| { |
| return 0; |
| } |
| |
| public abstract SSTableFormat<?, ?> getSSTableFormat(); |
| |
| /** |
| * Serialize this entry for key cache |
| * |
| * @param out the output stream for serialized entry |
| */ |
| public abstract void serializeForCache(DataOutputPlus out) throws IOException; |
| } |