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com.hfg xml, html, svg, and bioinformatics utility library
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package com.hfg.util;


//------------------------------------------------------------------------------
/**
 Simple implementation of the Value interface.
 
 @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 ValueImpl implements Value
{
   private String  mStringValue;
   private Number  mNumberValue;
   private Boolean mBooleanValue;

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

   //---------------------------------------------------------------------------
   public ValueImpl(Object inValue)
   {
      if (inValue != null)
      {
         if (inValue instanceof Number)
         {
            mNumberValue = (Number) inValue;
         }
         else if (inValue instanceof Boolean)
         {
            mBooleanValue = (Boolean) inValue;
         }
         else
         {
            mStringValue = inValue.toString();
         }
      }
   }

   //---------------------------------------------------------------------------
   public ValueImpl(String inValue)
   {
      mStringValue = inValue;
   }

   //---------------------------------------------------------------------------
   public ValueImpl(Number inValue)
   {
      mNumberValue = inValue;
   }

   //---------------------------------------------------------------------------
   public ValueImpl(boolean inValue)
   {
      mBooleanValue = inValue;
   }

   //---------------------------------------------------------------------------
   public ValueImpl(int inValue)
   {
      mNumberValue = inValue;
   }

   //---------------------------------------------------------------------------
   public ValueImpl(long inValue)
   {
      mNumberValue = inValue;
   }

   //---------------------------------------------------------------------------
   public ValueImpl(float inValue)
   {
      mNumberValue = inValue;
   }

   //---------------------------------------------------------------------------
   public ValueImpl(double inValue)
   {
      mNumberValue = inValue;
   }

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

   //---------------------------------------------------------------------------
   @Override
   public boolean isNull()
   {
      return (null == mStringValue
              && null == mNumberValue
              && null == mBooleanValue);
   }

   //---------------------------------------------------------------------------
   @Override
   public String toString()
   {
      return stringValue();
   }

   //---------------------------------------------------------------------------
   @Override
   public String stringValue()
   {
      return (mStringValue != null ? mStringValue : mNumberValue != null ? mNumberValue.toString() : mBooleanValue != null ? mBooleanValue.toString() : null);
   }

   //---------------------------------------------------------------------------
   @Override
   public Boolean booleanValue()
   {
      return (mBooleanValue != null ? mBooleanValue : mNumberValue != null ? BooleanUtil.valueOf(mNumberValue) : mStringValue != null ? BooleanUtil.valueOf(mStringValue) : null);
   }

   //---------------------------------------------------------------------------
   @Override
   public Integer intValue()
   {
      return (mNumberValue != null ? mNumberValue.intValue() : mBooleanValue != null ? (mBooleanValue ? 1 : 0) : null);
   }

   //---------------------------------------------------------------------------
   @Override
   public Long longValue()
   {
      return (mNumberValue != null ? mNumberValue.longValue() : mBooleanValue != null ? (mBooleanValue ? 1 : 0) : null);
   }

   //---------------------------------------------------------------------------
   @Override
   public Float floatValue()
   {
      return (mNumberValue != null ? mNumberValue.floatValue() : mBooleanValue != null ? (mBooleanValue ? 1 : 0) : null);
   }

   //---------------------------------------------------------------------------
   @Override
   public Double doubleValue()
   {
      return (mNumberValue != null ? mNumberValue.doubleValue() : mBooleanValue != null ? (mBooleanValue ? 1 : 0) : null);
   }
}