Passing the List of primitive type objects as datasource for subreport

Question

I need to pass to my subreport a dataSource with help of master report\'s List parameter. I don\'t know what is

Answer 1

You have to specify what field you're using in your sub report. You are passing $F{} and as you are passing a List as a DataSource you should put $F{_THIS}. Of course you have to add a field with that name too, only doing that you can use the expression $F{somefield}.