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.locator;
  
  import org.apache.cassandra.utils.Sortable;
  
  import java.util.Comparator;
  
  public interface NodeProximity
  {
      /**
       * returns a new <tt>List</tt> sorted by proximity to the given endpoint
       */
      public <C extends ReplicaCollection<? extends C>> C sortedByProximity(final InetAddressAndPort address, C addresses);
  
      /**
       * compares two endpoints in relation to the target endpoint, returning as Comparator.compare would
       */
      public int compareEndpoints(InetAddressAndPort target, Replica r1, Replica r2);
  
      /**
       * Returns whether for a range query doing a query against merged is likely
       * to be faster than 2 sequential queries, one against l1 followed by one against l2.
       */
      public boolean isWorthMergingForRangeQuery(ReplicaCollection<?> merged, ReplicaCollection<?> l1, ReplicaCollection<?> l2);
  
      default boolean supportCompareByEndpoint()
      {
          return false;
      }
  
      default <C extends Sortable<? extends Endpoint, ? extends C>> Comparator<Endpoint> endpointComparator(InetAddressAndPort address, C addresses)
      {
          throw new UnsupportedOperationException();
      }
  }
  