Bug 152443 Support boolean type in data set
Support boolean type in data set. It'll cause some data transform issue with absence of boolean type.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/odaconsumer/ResultSet.java
*/
	public IResultObject fetch( ) throws DataException
	{
		if ( m_resultSet == null )
			return null;
	    final String methodName = "fetch";
		try
		{
			if( ! m_resultSet.next( ) )
				return null;
		}
		catch( OdaException ex )
		{
		    sm_logger.logp( Level.SEVERE, sm_className, methodName,
		            		"Cannot fetch next row.", ex );
			throw new DataException( ResourceConstants.CANNOT_FETCH_NEXT_ROW, ex );
		}
		catch( UnsupportedOperationException ex )
		{
		    sm_logger.logp( Level.SEVERE, sm_className, methodName,
		            		"Cannot fetch next row.", ex );
			throw new DataException( ResourceConstants.CANNOT_FETCH_NEXT_ROW, ex );
		}
		int columnCount = m_resultClass.getFieldCount();
		int[] driverPositions = 
			( (ResultClass) m_resultClass ).getFieldDriverPositions();
		assert( columnCount == driverPositions.length );
		
		Object[] fields = new Object[ columnCount ];