Bug 207250 Check blank value for datetime type parameter from url.[0002][0705]
Description: Check blank value for datetime type parameter from url. Build number:2.3.0.v20071023 Steps to reproduce: 1. New a datetime parameter mydt,listbox, tick off isRequired. 2. Preview in external browser and add "&dt=" in url, press enter. Expected result: Error message to indicate blank value isn't allowed for this parameter. Actual result: No error message and blank value is accepted. I tried to new a jsp and use <birt:paramDef> to pass the blank value and the blank value is accepted,too. Error log:n/a
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/DataUtil.java
if ( value == null )
			return obj;
		
		
		if ( isLocale )
		{
			obj = validateWithLocale( dataType, format, value, locale );
		}
		else
		{
			
			if ( format == null )
				format = getDefaultDateFormat( dataType );
			
			obj = ParameterValidationUtil.validate( dataType, format, value );
		}
		return obj;
	}
	/**
	 * Convert parameter to Object with locale setting
	 * 
	 * @param dataType
	 * @param format
	 * @param value
	 * @param locale
	 * @return
	 * @throws ValidationValueException
	 */
	public static Object validateWithLocale( String dataType, String format,
			String value, Locale locale ) throws ValidationValueException