Bug 198172 Crosstab - cannot cast from BigDecimal to Double
data/org.eclipse.birt.report.data.adapter/src/org/eclipse/birt/report/data/adapter/impl/DataSetIterator.java
{
		public Object process( Object d ) throws AdapterException;
	}
	
	private class DummyDataProcessor implements IDataProcessor
	{
		public Object process( Object d )
		{
			return d;
		}
	}
	
	/**
	 * For all Time level, there is by default an "DateTime" attribute which contains the corresponding
	 * DateTime value of that time level.
	 */
	private class DateTimeAttributeProcessor implements IDataProcessor