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
{
		/**
		 * report design handle
		 */
		protected ModuleHandle handle;
		
		/**
		 * current report element created by visitor
		 */
		protected Object currentElement;
		
		ParameterIRVisitor( ModuleHandle handle )
		{
			super( );
			this.handle = handle;
		}
		
		public void visitParameterGroup( ParameterGroupHandle handle )
		{
			ParameterGroupDefn paramGroup = new ParameterGroupDefn( );
			paramGroup.setHandle( handle );
			paramGroup.setParameterType( IParameterDefnBase.PARAMETER_GROUP );
			paramGroup.setName( handle.getName( ) );
			paramGroup.setDisplayName( handle.getDisplayName( ) );
			paramGroup.setDisplayNameKey( handle.getDisplayNameKey( ) );
			paramGroup.setHelpText( handle.getHelpText( ) );
			paramGroup.setHelpTextKey( handle.getHelpTextKey( ) );
			paramGroup.setPromptText( handle.getPromptText( ) );