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 com.datastax.dse.driver.internal.core.graph;
  
  import com.datastax.oss.driver.shaded.guava.common.base.Objects;
  import com.datastax.oss.driver.shaded.guava.common.base.Preconditions;
  import java.io.Serializable;
  import net.jcip.annotations.Immutable;
  
  /**
   * A container for a term and maximum edit distance.
   *
   * <p>The context in which this is used determines the semantics of the edit distance. For instance,
   * it might indicate single-character edits if used with fuzzy search queries or whole word
   * movements if used with phrase proximity queries.
   */
  @Immutable
  public class EditDistance implements Serializable {
  
    private static final long serialVersionUID = 1L;
  
    public static final int DEFAULT_EDIT_DISTANCE = 0;
  
    public final String query;
    public final int distance;
  
    public EditDistance(String query) {
      this(query, DEFAULT_EDIT_DISTANCE);
    }
  
    public EditDistance(String query, int distance) {
      Preconditions.checkNotNull(query, "Query cannot be null.");
      Preconditions.checkArgument(distance >= 0, "Edit distance cannot be negative.");
      this.query = query;
      this.distance = distance;
    }
  
    @Override
    public boolean equals(Object o) {
      if (this == o) {
        return true;
      }
      if (!(o instanceof EditDistance)) {
        return false;
      }
      EditDistance that = (EditDistance) o;
      return distance == that.distance && Objects.equal(query, that.query);
    }
  
    @Override
    public int hashCode() {
      return Objects.hashCode(query, distance);
    }
  
    @Override
    public String toString() {
      return "EditDistance{" + "query='" + query + '\'' + ", distance=" + distance + '}';
    }
  }
  