Bug 157948 Default value of datetime parameter doesn't take effect
Default value of datetime parameter doesn't take effect Steps to reproduce: 1.new a report and new a parameter 2.set the parameter data type"DateTime",display type"Radio Button" and new two parameters,the display text and value of the first are "this year" and "09/05/2006 the second is "last year" and "09/05/2006" 3.preview in html Expected result: the default value takes effects Actual result: the default value doesn't take effects
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/DataUtil.java
* @throws ValidationValueException
	 */
	public static Object validate( String dataType, String format,
			String value, Locale locale ) throws ValidationValueException
	{
		Object obj = null;
		try
		{
			
			obj = ParameterValidationUtil.validate( dataType, format, value,
					locale );
		}
		catch ( ValidationValueException e1 )
		{
			
			format = null;
			if ( DesignChoiceConstants.PARAM_TYPE_DATETIME
					.equalsIgnoreCase( dataType ) )
			{
				format = ParameterValidationUtil.DEFAULT_DATETIME_FORMAT;
			}
			obj = ParameterValidationUtil.validate( dataType, format, value );
		}
		return obj;
	}
	/**
	 * Gets the display string for the value with default locale and default
	 * format, The value must be the valid data type. That is:
	 * 
	 * <ul>