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.service.accord.txn;
  
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Objects;
  
  import com.google.common.collect.Lists;
  import org.junit.Assert;
  import org.junit.BeforeClass;
  import org.junit.Test;
  
  import accord.primitives.Routable.Domain;
  import accord.primitives.Seekable;
  import org.apache.cassandra.SchemaLoader;
  import org.apache.cassandra.db.DecoratedKey;
  import org.apache.cassandra.dht.ByteOrderedPartitioner;
  import org.apache.cassandra.schema.TableId;
  import org.apache.cassandra.service.accord.api.PartitionKey;
  import org.apache.cassandra.utils.ByteBufferUtil;
  
  public class AbstractKeySortedTest
  {
      private static final TableId TABLE1 = TableId.fromString("00000000-0000-0000-0000-000000000001");
  
      @BeforeClass
      public static void beforeClass() throws Exception
      {
          SchemaLoader.prepareServer();
      }
  
      static class Item
      {
          final PartitionKey key;
          final int value;
  
          public Item(PartitionKey key, int value)
          {
              this.key = key;
              this.value = value;
          }
  
          @Override
          public boolean equals(Object o)
          {
              if (this == o) return true;
              if (o == null || getClass() != o.getClass()) return false;
              Item item = (Item) o;
              return value == item.value && key.equals(item.key);
          }
  
          @Override
          public int hashCode()
          {
              return Objects.hash(key, value);
          }
  
          @Override
          public String toString()
          {
              return "Item{" +
                     "key=" + key +
                     ", value=" + value +
                     '}';
          }
      }
  
      static class SortedItems extends AbstractKeySorted<Item>
      {
          public SortedItems(Item... items)
          {
              super(items, Domain.Key);
          }
  
          public SortedItems(List<Item> items)
          {
              super(items, Domain.Key);
          }
  
          @Override
          int compareNonKeyFields(Item left, Item right)
          {
              return Integer.compare(left.value, right.value);
          }
  
          @Override
          Seekable getKey(Item item)
          {
              return item.key;
          }
  
          @Override
          Item[] newArray(int size)
          {
              return new Item[size];
          }
      }
  
      private static PartitionKey key(int k)
      {
          DecoratedKey dk = ByteOrderedPartitioner.instance.decorateKey(ByteBufferUtil.bytes(k));
          return new PartitionKey(TABLE1, dk);
      }
  
      private static Item item(int k, int v)
      {
          return new Item(key(k), v);
      }
  
      private static List<Item> itemList(Item... items)
      {
          return Lists.newArrayList(items);
      }
  
      @Test
      public void checkInitialSorting()
      {
          List<Item> initial = itemList(item(5, 4), item(3, 3), item(3, 1), item(6, 5));
          SortedItems expected = new SortedItems(item(3, 1), item(3, 3), item(5, 4), item(6, 5));
          expected.validateOrder();
          SortedItems actual = new SortedItems(initial);
          actual.validateOrder();
          Assert.assertEquals(expected, actual);
      }
  
      @Test
      public void checkIterationForKey()
      {
          SortedItems source = new SortedItems(item(1, 5), item(3, 1), item(3, 3), item(5, 4), item(6, 5));
          source.validateOrder();
  
          source.forEachWithKey(key(0), i -> Assert.fail());
          source.forEachWithKey(key(1), i -> Assert.assertEquals(item(1, 5), i));
          source.forEachWithKey(key(2), i -> Assert.fail());
          List<Item> actual = new ArrayList<>();
          source.forEachWithKey(key(3), actual::add);
          Assert.assertEquals(itemList(item(3, 1), item(3, 3)), actual);
          source.forEachWithKey(key(4), i -> Assert.fail());
          source.forEachWithKey(key(5), i -> Assert.assertEquals(item(5, 4), i));
          source.forEachWithKey(key(6), i -> Assert.assertEquals(item(6, 5), i));
          source.forEachWithKey(key(7), i -> Assert.fail());
      }
  }
  