content: /*
   * 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.Objects;
  
  import com.google.common.annotations.VisibleForTesting;
  
  import org.apache.cassandra.db.DecoratedKey;
  import org.apache.cassandra.schema.Schema;
  import org.apache.cassandra.schema.TableId;
  import org.apache.cassandra.schema.TableMetadata;
  import org.apache.cassandra.schema.TableMetadataRef;
  import org.apache.cassandra.utils.ByteBufferUtil;
  import org.apache.cassandra.utils.ObjectSizes;
  
  public final class RowCacheKey extends CacheKey
  {
      public final byte[] key;
  
      private static final long EMPTY_SIZE = ObjectSizes.measure(new RowCacheKey(null, null, new byte[0]));
  
      public RowCacheKey(TableId tableId, String indexName, byte[] key)
      {
          super(tableId, indexName);
          this.key = key;
      }
  
      public RowCacheKey(TableMetadata metadata, DecoratedKey key)
      {
          super(metadata);
          this.key = ByteBufferUtil.getArray(key.getKey());
          assert this.key != null;
      }
  
      @VisibleForTesting
      public RowCacheKey(TableId tableId, String indexName, ByteBuffer key)
      {
          super(tableId, indexName);
          this.key = ByteBufferUtil.getArray(key);
          assert this.key != null;
      }
  
      public long unsharedHeapSize()
      {
          return EMPTY_SIZE + ObjectSizes.sizeOfArray(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 tableId.equals(that.tableId)
                 && Objects.equals(indexName, that.indexName)
                 && Arrays.equals(key, that.key);
      }
  
      @Override
      public int hashCode()
      {
          int result = tableId.hashCode();
          result = 31 * result + Objects.hashCode(indexName);
          result = 31 * result + (key != null ? Arrays.hashCode(key) : 0);
          return result;
      }
  
      @Override
      public String toString()
      {
          TableMetadataRef tableRef = Schema.instance.getTableMetadataRef(tableId);
          return String.format("RowCacheKey(%s, %s, key:%s)", tableRef, indexName, Arrays.toString(key));
      }
  }
  