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
else
			{
				executionContext.setParameter( parameter.getName( ), value,
						choice.getLabel( ) );
				children = getSelectionTree( parameters, parameterHelpers, cache, values );
			}
			result = cache.getParent( values, parameterIndex );
			CascadingParameterSelectionChoice groupChoice = parameterHelpers[parameterIndex]
					.createCascadingParameterSelectionChoice( choice );
			result.add( groupChoice );
			groupChoice.setChildren( children );
		}
		return result;
	}
	private void close( IResultIterator resultIterator )
	{
		try
		{
			resultIterator.close( );
		}
		catch ( BirtException e )
		{
			log.log( Level.WARNING, "close results" );
		}
	}
	private Collection populateToSelectionTree( IResultIterator iterator,
			CascadingParameterGroupHandle parameterGroup )
	{
		assert iterator != null;
		ParameterHelper[] parameterHelpers = getParameterHelpers( parameterGroup );