/*
    * Copyright (C) 2011, Red Hat, Inc.
    * Written by Darryl L. Pierce <dpierce@redhat.com>.
    *
    * 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.ext.mssql;
  
  import java.sql.PreparedStatement;
  import java.sql.ResultSet;
  import java.sql.SQLException;
  import java.sql.Types;
  import java.util.UUID;
  
  import org.dbunit.dataset.datatype.AbstractDataType;
  import org.dbunit.dataset.datatype.TypeCastException;
  
  /**
   * <code>UniqueIdentifierType</code> provides support for the "uniqueidentifier" column in Microsoft SQLServer
   * databases. It users the {@link UUID}
   *
   * @Author Darryl L. Pierce <dpierce@redhat.com>
   * @Since 02 February 2011
   * @version $Revision$
   */
  public class UniqueIdentifierType extends AbstractDataType {
      static final String UNIQUE_IDENTIFIER_TYPE = "uniqueidentifier";
  
      public UniqueIdentifierType() {
          super(UNIQUE_IDENTIFIER_TYPE, Types.CHAR, UUID.class, false);
      }
  
      @Override
      public Object typeCast(Object value) throws TypeCastException {
          return value.toString();
      }
  
      @Override
      public Object getSqlValue(int column, ResultSet resultSet) throws SQLException, TypeCastException {
          String value = resultSet.getString(column);
  
          try {
              return value != null && value.length() > 0 ? UUID.fromString(value)
                      : null;
          } catch (IllegalArgumentException error) {
              throw new TypeCastException("Invalid UUID: " + value, error);
          }
      }
  
      @Override
      public void setSqlValue(Object value, int column, PreparedStatement statement) throws SQLException,
      TypeCastException {
          if (value == null)
          {
              statement.setObject(column, null);
          } else
          {
              statement.setObject(column, value.toString());
          }
      }
  }