Bug 148611 The edit parameter dialog hang up in my case.
Reproduce: The attachment include a library and a report. 1. Put the library file under the resource folder, "D:/Actuate/BIRTs/200606260630/eclipse/plugins/org.eclipse.birt.report.designer.ui_2.1.0.N20060624-0630/resources/" in my application. 2. Open the report, preview in the embedded viewer. 3. The Edit parameter dialog hang up. (Notice: it is the extened "dynamic" parameter that cause the problem. My CPU reaches 100% ocuppation when rendering the dialog, while when I end up closing the dummy dialog, CPU doesn't seem to be released, still 100%. )
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/service/BirtViewerReportService.java
Object o = it.next( );
			if ( o instanceof IScalarParameterDefn )
			{
				IScalarParameterDefn engineParam = (IScalarParameterDefn) o;
				ParameterGroupDefinition group = null;
				ParameterDefinition param = convertScalarParameter(
						engineParam, group, task );
				ret.add( param );
			}
			else if ( o instanceof IParameterGroupDefn )
			{
				IParameterGroupDefn engineParam = (IParameterGroupDefn) o;
				ParameterGroupDefinition paramGroup = convertParameterGroup(
						engineParam, task );
				ret.add( paramGroup );
			}
		}
		if ( includeGroups )
			return ret;
		
		return flattenGroups( ret );
	}
	
	private static List flattenGroups( List params )
	{
		if ( params == null || params.size( ) == 0 )
			return Collections.EMPTY_LIST;
		List ret = new ArrayList( );
		for ( Iterator it = params.iterator( ); it.hasNext( ); )
		{