金蝶handler中 collection 代码片段理解

1 SelectorItemCollection selectors = new SelectorItemCollection();
2         //自定义集合SelectorItemCollection的定义
3         selectors.add(new SelectorItemInfo("id"));        //集合selectors中添加id
4         selectors.add(new SelectorItemInfo("name"));    //集合selectors中添加name
5         viewInfo.setSelector(selectors);                //给viewInfo设置属性
6         viewInfo.setFilter(temFilterInfo);                //给viewInfo设置过滤条件