code: /**
   * Copyright (C) 2015-2016, BMW Car IT GmbH and BMW AG
   * Author: Stefan Holder (stefan.holder@bmw.de)
   *
   * Licensed 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.bmw.hmm;
  
  import java.util.Objects;
  
  /**
   * Represents the transition between two consecutive candidates.
   *
   * @param <S> the state type
   */
  public class Transition<S> {
      public final S fromCandidate;
      public final S toCandidate;
  
      public Transition(S fromCandidate, S toCandidate) {
          this.fromCandidate = fromCandidate;
          this.toCandidate = toCandidate;
      }
  
      @Override
      public int hashCode() {
          return Objects.hash(fromCandidate, toCandidate);
      }
  
      @Override
      public boolean equals(Object obj) {
          if (this == obj)
              return true;
          if (obj == null)
              return false;
          if (getClass() != obj.getClass())
              return false;
          @SuppressWarnings("unchecked")
          Transition<S> other = (Transition<S>) obj;
          return Objects.equals(fromCandidate, other.fromCandidate) && Objects.equals(toCandidate,
                  other.toCandidate);
      }
  
      @Override
      public String toString() {
          return "Transition [fromCandidate=" + fromCandidate + ", toCandidate="
                  + toCandidate + "]";
      }
  
  
  }
  