Bug 147819 Dynamic parameter, if value column datas include null datas, preview, system throws exception
Dynamic parameter, if value column datas include null datas, preview, system throws exception Step: data source: sample DB data set: select * from CLASSICMODELS.CUSTOMERS 1.Create a dynamic parameter 2.Display type select List Box, value columm select "State"; display text select "CUSTOMERNAME"; 3.Preview in html Actual Results: 1.System throws Http status 500 exception
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/util/ParameterValidationUtil.java
* @param value
	 *            the value to validate
	 * @param locale
	 *            the locale information
	 * @return the double value if validation is successful
	 * @throws ValidationValueException
	 *             if the value is invalid
	 */
	static final Number doValidateNumber( String dataType, String value,
			ULocale locale ) throws ValidationValueException
	{
		assert DesignChoiceConstants.PARAM_TYPE_FLOAT
				.equalsIgnoreCase( dataType )
				|| DesignChoiceConstants.PARAM_TYPE_DECIMAL
						.equalsIgnoreCase( dataType );
		value = StringUtil.trimString( value );
		if ( value == null )
			return null;
		NumberFormat localeFormatter = NumberFormat.getNumberInstance( locale );
		try
		{
			
			
			return localeFormatter.parse( value );
		}
		catch ( ParseException e )
		{
			throw new ValidationValueException( value,
					PropertyValueException.DESIGN_EXCEPTION_INVALID_VALUE,
					dataType );