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
ParameterHelper[] parameterHelpers, ChoiceListCache cache,
			Object[] parameterValueAhead )
	{
		int parameterIndex = parameterValueAhead.length;
		int parameterCount = parameters.getCount( );
		ScalarParameterHandle parameter = (ScalarParameterHandle) parameters
				.get( parameterIndex );
		Collection choices = getChoicesFromParameterQuery( parameter );
		Iterator iterator = choices.iterator( );
		Collection result = null;
		while ( iterator.hasNext( ) )
		{
			Object[] values = new Object[parameterIndex + 1];
			for ( int i = 0; i < parameterValueAhead.length; i++ )
			{
				values[i] = parameterValueAhead[i];
			}
			IParameterSelectionChoice choice = (IParameterSelectionChoice) iterator
					.next( );
			Object value = choice.getValue( );
			values[parameterIndex] = value;
			Collection children = null;
			if ( parameterIndex == parameterCount - 1 )
			{
				children = Collections.EMPTY_LIST;
			}
			else if ( cache.containsChildren( values, parameterIndex ) )
			{
				children = cache.getChildren( values, parameterIndex );
			}