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.arrow.vector.compare;
  
  import org.apache.arrow.vector.ValueVector;
  
  /**
   * A function to determine if two vectors are equal at specified positions.
   *
   * @param <V> the vector type.
   */
  public interface VectorValueEqualizer<V extends ValueVector> extends Cloneable {
  
    /**
     * Checks if the vectors are equal at the given positions, given that the values at both positions
     * are non-null.
     *
     * @param vector1 the first vector.
     * @param index1 index in the first vector.
     * @param vector2 the second vector.
     * @param index2 index in the second vector.
     * @return true if the two values are considered to be equal, and false otherwise.
     */
    boolean valuesEqual(V vector1, int index1, V vector2, int index2);
  
    /**
     * Creates a equalizer of the same type.
     *
     * @return the newly created equalizer.
     */
    VectorValueEqualizer<V> clone();
  }
  