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
parameterDefns = new ArrayList( );
		while ( iter.hasNext( ) )
		{
			ParameterDefnBase pBase = (ParameterDefnBase) iter.next( );
			try
			{
				parameterDefns.add( pBase.clone( ) );
			}
			catch ( CloneNotSupportedException e ) 
			
			{
				log.log( Level.SEVERE, e.getMessage( ), e );
			}
		}
		if ( parameterDefns != null )
		{
			Locale locale = ulocale.toLocale( );
			iter = parameterDefns.iterator( );
			while ( iter.hasNext( ) )
			{
				IParameterDefnBase pBase = (IParameterDefnBase) iter.next( );
				if ( pBase instanceof ScalarParameterDefn )
				{
					( (ScalarParameterDefn) pBase )
							.setDesign( designHandle );
					( (ScalarParameterDefn) pBase ).setLocale( locale );
					( (ScalarParameterDefn) pBase ).evaluateSelectionList( );
				}
				else if ( pBase instanceof DynamicFilterParameterDefn )