| /* |
| * 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; |
| |
| import java.nio.ByteBuffer; |
| |
| import org.apache.cassandra.utils.ObjectSizes; |
| |
| public abstract class AbstractBufferClusteringPrefix extends AbstractClusteringPrefix |
| { |
| public static final ByteBuffer[] EMPTY_VALUES_ARRAY = new ByteBuffer[0]; |
| private static final long EMPTY_SIZE = ObjectSizes.measure(Clustering.make(EMPTY_VALUES_ARRAY)); |
| |
| protected final Kind kind; |
| protected final ByteBuffer[] values; |
| |
| protected AbstractBufferClusteringPrefix(Kind kind, ByteBuffer[] values) |
| { |
| this.kind = kind; |
| this.values = values; |
| } |
| |
| public Kind kind() |
| { |
| return kind; |
| } |
| |
| public ClusteringPrefix clustering() |
| { |
| return this; |
| } |
| |
| public int size() |
| { |
| return values.length; |
| } |
| |
| public ByteBuffer get(int i) |
| { |
| return values[i]; |
| } |
| |
| public ByteBuffer[] getRawValues() |
| { |
| return values; |
| } |
| |
| public long unsharedHeapSize() |
| { |
| return EMPTY_SIZE + ObjectSizes.sizeOnHeapOf(values); |
| } |
| |
| public long unsharedHeapSizeExcludingData() |
| { |
| return EMPTY_SIZE + ObjectSizes.sizeOnHeapExcludingData(values); |
| } |
| } |