package org.davidmoten.rx.jdbc.tuple;
   
   /**
    * An explicitly typed tuple.
    * 
    * @param <T1> type of first element
    * @param <T2> type of second element
    * @param <T3> type of third element
    * @param <T4> type of fourth element
   */
  public class Tuple4<T1, T2, T3, T4> {
  
      private final T1 value1;
      private final T2 value2;
      private final T3 value3;
      private final T4 value4;
  
      /**
       * Constructor.
       * 
       * @param value1 first element
       * @param value2 second element
       * @param value3 third element
       * @param value4 fourth element
       */
      public Tuple4(T1 value1, T2 value2, T3 value3, T4 value4) {
          this.value1 = value1;
          this.value2 = value2;
          this.value3 = value3;
          this.value4 = value4;
      }
  
      public static <T1, T2, T3, T4> Tuple4<T1, T2, T3, T4> create(T1 value1, T2 value2, T3 value3, T4 value4) {
          return new Tuple4<T1, T2, T3, T4>(value1, value2, value3, value4);
      }
  
      public T1 value1() {
          return value1;
      }
  
      public T2 value2() {
          return value2;
      }
  
      public T3 value3() {
          return value3;
      }
  
      public T4 value4() {
          return value4;
      }
  
      public T1 _1() {
          return value1;
      }
  
      public T2 _2() {
          return value2;
      }
  
      public T3 _3() {
          return value3;
      }
  
      public T4 _4() {
          return value4;
      }
  
      @Override
      public int hashCode() {
          final int prime = 31;
          int result = 1;
          result = prime * result + ((value1 == null) ? 0 : value1.hashCode());
          result = prime * result + ((value2 == null) ? 0 : value2.hashCode());
          result = prime * result + ((value3 == null) ? 0 : value3.hashCode());
          result = prime * result + ((value4 == null) ? 0 : value4.hashCode());
          return result;
      }
  
      @Override
      public boolean equals(Object obj) {
          if (this == obj)
              return true;
          if (obj == null)
              return false;
          if (getClass() != obj.getClass())
              return false;
          Tuple4<?, ?, ?, ?> other = (Tuple4<?, ?, ?, ?>) obj;
          if (value1 == null) {
              if (other.value1 != null)
                  return false;
          } else if (!value1.equals(other.value1))
              return false;
          if (value2 == null) {
              if (other.value2 != null)
                  return false;
          } else if (!value2.equals(other.value2))
              return false;
          if (value3 == null) {
             if (other.value3 != null)
                 return false;
         } else if (!value3.equals(other.value3))
             return false;
         if (value4 == null) {
             if (other.value4 != null)
                 return false;
         } else if (!value4.equals(other.value4))
             return false;
         return true;
     }
 
     @Override
     public String toString() {
         return "Tuple4 [value1=" + value1 + ", value2=" + value2 + ", value3=" + value3 + ", value4=" + value4 + "]";
     }
 
 }