package com.github.davidmoten.rx.jdbc.tuple;
   
   /**
    * An explicitly typed tuple.
    * 
    * @param <T1>
    * @param <T2>
    */
   public class Tuple2<T1, T2> {
  
      private final T1 value1;
      private final T2 value2;
  
      /**
       * Constructor.
       * 
       * @param value1
       * @param value2
       */
      public Tuple2(T1 value1, T2 value2) {
          this.value1 = value1;
          this.value2 = value2;
      }
  
      /**
       * Returns a new instance.
       * 
       * @param r
       * @param s
       * @return
       */
      public static <R, S> Tuple2<R, S> create(R r, S s) {
          return new Tuple2<R, S>(r, s);
      }
  
      /**
       * Returns the first memmber of the tuple.
       * 
       * @return
       */
      public T1 value1() {
          return value1;
      }
  
      /**
       * Returns the 2nd member of the tuple.
       * 
       * @return
       */
      public T2 value2() {
          return value2;
      }
  
      @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());
          return result;
      }
  
      @Override
      public boolean equals(Object obj) {
          if (this == obj)
              return true;
          if (obj == null)
              return false;
          if (getClass() != obj.getClass())
              return false;
          Tuple2<?, ?> other = (Tuple2<?, ?>) 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;
          return true;
      }
  
      @Override
      public String toString() {
          return "Tuple2 [value1=" + value1 + ", value2=" + value2 + "]";
      }
  
  }