| /* |
| * 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.cache; |
| |
| import java.nio.ByteBuffer; |
| import java.util.Arrays; |
| import java.util.UUID; |
| |
| import org.apache.cassandra.config.Schema; |
| import org.apache.cassandra.db.DecoratedKey; |
| import org.apache.cassandra.utils.ByteBufferUtil; |
| import org.apache.cassandra.utils.FBUtilities; |
| import org.apache.cassandra.utils.ObjectSizes; |
| import org.apache.cassandra.utils.Pair; |
| |
| public class RowCacheKey implements CacheKey, Comparable<RowCacheKey> |
| { |
| public final UUID cfId; |
| public final byte[] key; |
| |
| public RowCacheKey(UUID cfId, DecoratedKey key) |
| { |
| this(cfId, key.key); |
| } |
| |
| public RowCacheKey(UUID cfId, ByteBuffer key) |
| { |
| this.cfId = cfId; |
| this.key = ByteBufferUtil.getArray(key); |
| assert this.key != null; |
| } |
| |
| public Pair<String, String> getPathInfo() |
| { |
| return Schema.instance.getCF(cfId); |
| } |
| |
| public long memorySize() |
| { |
| return ObjectSizes.getFieldSize(// cfId |
| ObjectSizes.getReferenceSize() + |
| // key |
| ObjectSizes.getReferenceSize()) |
| + ObjectSizes.getArraySize(key); |
| } |
| |
| @Override |
| public boolean equals(Object o) |
| { |
| if (this == o) return true; |
| if (o == null || getClass() != o.getClass()) return false; |
| |
| RowCacheKey that = (RowCacheKey) o; |
| |
| return cfId.equals(that.cfId) && Arrays.equals(key, that.key); |
| } |
| |
| @Override |
| public int hashCode() |
| { |
| int result = cfId.hashCode(); |
| result = 31 * result + (key != null ? Arrays.hashCode(key) : 0); |
| return result; |
| } |
| |
| public int compareTo(RowCacheKey otherKey) |
| { |
| return (cfId.compareTo(otherKey.cfId) < 0) ? -1 : ((cfId.equals(otherKey.cfId)) ? FBUtilities.compareUnsigned(key, otherKey.key, 0, 0, key.length, otherKey.key.length) : 1); |
| } |
| |
| @Override |
| public String toString() |
| { |
| return String.format("RowCacheKey(cfId:%s, key:%s)", cfId, Arrays.toString(key)); |
| } |
| } |