package org.apidesign.apifest08.currency;

 import java.util.Date;

 public final class DateRange

 {

     private final Date from;

     private final Date till;

     DateRange(final Date f,

               final Date t)

     {

         if(f == null && t != null)

         {

             throw new IllegalArgumentException("f was null but t was not");

         }

         if(f != null && t == null)

         {

             throw new IllegalArgumentException("f was null but t was not");

         }

         from = f;

         till = t;

     }

     public Date getFrom()

     {

         return (from);

     }

     public Date getTill()

     {

         return (from);

     }

     public boolean isInRange(final Date date)

     {

         final boolean retVal;

         if(date.equals(from) || date.equals(till))

         {

             retVal = true;

         }

         else if(date.after(from) && date.before(till))

         {

             retVal = true;

         }

         else

         {

             retVal = false;

         }

         return (retVal);

     }

     @Override

     public boolean equals(Object obj) {

         if (obj == null) {

             return false;

         }

         if (getClass() != obj.getClass()) {

             return false;

         }

         final DateRange other = (DateRange) obj;

         if (this.from != other.from && (this.from == null || !this.from.equals(other.from))) {

             return false;

         }

         if (this.till != other.till && (this.till == null || !this.till.equals(other.till))) {

             return false;

         }

         return true;

     }

     @Override

     public int hashCode() {

         int hash = 7;

         hash = 89 * hash + (this.from != null ? this.from.hashCode() : 0);

         hash = 89 * hash + (this.till != null ? this.till.hashCode() : 0);

         return hash;

     }

     @Override

     public String toString()

     {

         return (from + " until " + till);

     }

 }