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package com.hfg.units;

//------------------------------------------------------------------------------

import com.hfg.util.StringUtil;

/**
 Quantity of time.
 
 @author J. Alex Taylor, hairyfatguy.com
 
 */
//------------------------------------------------------------------------------
// com.hfg Library
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//
// J. Alex Taylor, President, Founder, CEO, COO, CFO, OOPS hairyfatguy.com
// [email protected]
//------------------------------------------------------------------------------

public class TimeSpan extends Quantity
{

   //###########################################################################
   // CONSTRUCTORS
   //###########################################################################

   //---------------------------------------------------------------------------
   /**
    Convenience constructor that will call TimeUnit.valueOf() on the specified unit string.
    * @param inValue the numeric amount as a float
    * @param inUnit the time unit of the specified amount
    */
   public TimeSpan(Float inValue, String inUnit)
   {
      this(inValue, TimeUnit.valueOf(inUnit));

      if (null == getUnit())
      {
         throw new UnitParseException("The string " + StringUtil.singleQuote(inUnit) + " couldn't be parsed into a TimeUnit!");
      }
   }

   //---------------------------------------------------------------------------
   /**
    Convenience constructor that will call TimeUnit.valueOf() on the specified unit string.
    * @param inValue the numeric amount as an integer
    * @param inUnit the time unit of the specified amount
    */
   public TimeSpan(Integer inValue, String inUnit)
   {
      this(inValue, TimeUnit.valueOf(inUnit));

      if (null == getUnit())
      {
         throw new UnitParseException("The string " + StringUtil.singleQuote(inUnit) + " couldn't be parsed into a TimeUnit!");
      }
   }

   //---------------------------------------------------------------------------
   public TimeSpan(Double inValue, TimeUnit inUnit)
   {
      super(inValue, inUnit);
   }

   //---------------------------------------------------------------------------
   public TimeSpan(Float inValue, TimeUnit inUnit)
   {
      super(inValue, inUnit);
   }

   //---------------------------------------------------------------------------
   public TimeSpan(Integer inValue, TimeUnit inUnit)
   {
      super(inValue, inUnit);
   }

   //---------------------------------------------------------------------------
   /**
    Convenience constructor.
    * @param inValue the string value
    */
   public TimeSpan(String inValue)
   {
      super(inValue);

      if (! getUnit().getQuantityType().equals(QuantityType.TIME))
      {
         throw new UnitParseException("The units in the string " + StringUtil.singleQuote(inValue) + " are not time units!");
      }
   }

   //###########################################################################
   // PUBLIC METHODS
   //###########################################################################

   //---------------------------------------------------------------------------
   @Override
   public TimeUnit getUnit()
   {
      return (TimeUnit) super.getUnit();
   }

   //---------------------------------------------------------------------------
   /**
    Returns the time span's length in milliseconds. Note that the values for MONTH
    and YEAR are approximations.
    @return the length of time in milliseconds that corresponds to this span of time.
    */
   public long getMilliseconds()
   {
      return (intValue() * getUnit().getMilliseconds());
   }

}