Bug 314631 Cann't get correct default values for parameters that with non-constant default value expressions
Steps to reproduce: 1. create a report with a scalar parameter that has non-constant default value expression such as BirtDateTime.today() 2. setup a project to get the default values of the parameter in BIRT runtime Eg. IReportEngine engine = createReportEngine( ); IRunnable runnable = engine.openReportDesign( REPORT_DESIGN ); IGetParamaterDefinitionTask task = engine.createGetParameterDefinitionTask( runnable ); HashMap result = task.getDefaultValues(); Expect result: The result map contains a parameter name and default value pair in which the default value is a Date instance of today. Actural result: The default value is null.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/api/impl/GetParameterDefinitionTask.java
}
	private Collection getCascadingParameterList( AbstractScalarParameterHandle parameter )
	{
		Object[] parameterValuesAhead =  getParameterValuesAhead( parameter );
		return getChoicesFromParameterGroup ( parameter, parameterValuesAhead );
	}
	private Collection populateToList( IResultIterator iterator,
			AbstractScalarParameterHandle parameter, SelectionFilter filter )
	{
		ParameterHelper parameterHelper = new ParameterHelper( parameter,
				ulocale, timeZone );
		Collection choices = parameterHelper.createSelectionCollection( );
		int limit = parameter.getListlimit( );
		try
		{
			while ( iterator.next( )
					&& ( limit <= 0 || choices.size( ) < limit ) )
			{
				
				if ( filter != null && !filter.accept( iterator ) )
				{
					continue;
				}
				String label = parameterHelper.getLabel( iterator );
				Object value = parameterHelper.getValue( iterator );
				choices.add( new SelectionChoice( label, value ) );
			}
		}
		catch ( BirtException ex )
		{