Bug 155478 [regression]Numbers in cascading group displays incorrectly
Description: Numbers in cascading group displays incorrectly. Steps to reproduce: 1. New sample data source and dataset from table ORDERS. 2. New a cascading group with two sub parameters, the first is from STATUS and the second is from ORDERNUMBER. 3. Preview 4. Select a status value in poped up parameter dialog, see ordernumber list Expected result: See 10100, 10101, such kind of format. Actual result: I saw 10.100, 10.167..., I just listed out the numbers as example
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/util/ParameterValidationUtil.java
{
			NumberFormatter formatter = new NumberFormatter( locale );
			formatter.applyPattern( format );
			return formatter.format( ( (BigDecimal) value ) );
		}
		else if ( DesignChoiceConstants.PARAM_TYPE_INTEGER
				.equalsIgnoreCase( dataType )
				|| value instanceof Integer || value instanceof Long )
		{
			NumberFormatter formatter = new NumberFormatter( locale );
			formatter.applyPattern( format );
			return formatter.format( ( (Number) value ).longValue( ) );
		}
		else if ( DesignChoiceConstants.PARAM_TYPE_BOOLEAN
				.equalsIgnoreCase( dataType )
				|| value instanceof Boolean )
		{
			if ( ( (Boolean) value ).booleanValue( ) )
			{
				return getMessage( locale,
						BooleanPropertyType.BOOLEAN_TRUE_RESOURCE_KEY );
			}
			return getMessage( locale,
					BooleanPropertyType.BOOLEAN_FALSE_RESOURCE_KEY );
		}
		else if ( DesignChoiceConstants.PARAM_TYPE_STRING
				.equalsIgnoreCase( dataType )
				|| value instanceof String )
		{
			StringFormatter formatter = new StringFormatter( locale );