/*
    *
    * The DbUnit Database Testing Framework
    * Copyright (C)2002-2009, DbUnit.org
    *
    * 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
   *
   */
  
  package org.dbunit.dataset.datatype;
  
  import java.math.BigDecimal;
  import java.math.BigInteger;
  import java.sql.PreparedStatement;
  import java.sql.ResultSet;
  import java.sql.SQLException;
  import java.sql.Types;
  
  import org.dbunit.dataset.ITable;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * Inserts and reads {@link BigInteger} values into/from a database.
   *
   * @author gommma (gommma AT users.sourceforge.net)
   * @author Last changed by: $Author$
   * @version $Revision$ $Date$
   * @since 2.4.6
   */
  public class BigIntegerDataType extends AbstractDataType
  {
      private static final Logger logger =
              LoggerFactory.getLogger(BigIntegerDataType.class);
  
      public BigIntegerDataType()
      {
          super("BIGINT", Types.BIGINT, BigInteger.class, true);
      }
  
      // //////////////////////////////////////////////////////////////////////////
      // DataType class
  
      @Override
      public Object typeCast(final Object value) throws TypeCastException
      {
          logger.debug("typeCast(value={}) - start", value);
  
          if (value == null || value == ITable.NO_VALUE)
          {
              return null;
          }
  
          if (value instanceof BigInteger)
          {
              return value;
          } else if (value instanceof BigDecimal)
          {
              return ((BigDecimal) value).toBigInteger();
          } else if (value instanceof Number)
          {
              final long l = ((Number) value).longValue();
              return new BigInteger(String.valueOf(l));
          }
  
          try
          {
              final BigDecimal bd = new BigDecimal(value.toString());
              return bd.toBigInteger();
          } catch (final java.lang.NumberFormatException e)
          {
              throw new TypeCastException(value, this, e);
          }
      }
  
      @Override
      public Object getSqlValue(final int column, final ResultSet resultSet)
              throws SQLException, TypeCastException
      {
          logger.debug("getSqlValue(column={}, resultSet={}) - start", column,
                  resultSet);
          final BigDecimal rawValue = resultSet.getBigDecimal(column);
          final BigInteger value =
                  resultSet.wasNull() ? null : rawValue.toBigInteger();
          logger.debug("getSqlValue: column={}, value={}", column, value);
          return value;
      }
 
     @Override
     public void setSqlValue(final Object value, final int column,
             final PreparedStatement statement)
             throws SQLException, TypeCastException
     {
         logger.debug("setSqlValue(value={}, column={}, statement={}) - start",
                 value, column, statement);
 
         final BigInteger val = (BigInteger) typeCast(value);
         final BigDecimal valueBigDecimal =
                 (val == null) ? null : new BigDecimal(val);
         statement.setBigDecimal(column, valueBigDecimal);
     }
 }