绑定 Set 集合中的对象 [英] Bind objects in a Set collection

问题描述

我有一个表单来填充集合的一些对象.我用 List 实现了集合(一切正常)，但现在我想使用 Set.我注册了一个属性编辑器来创建对象.问题是我不知道我必须使用什么语法来填充 Set 的对象.

I have a form which fills some objects of a Collection. I had the collection implemented with a List (an everything worked good), but now I want to use a Set. I have a property editor registered to create the objects. The problem is that I don't know what is the syntax I must use to populate the objects of the Set.

public class MyObject(){
    Set<OtherObject> otherObjects = new HashSet();
}

我尝试过使用表单标签中的语法，比如列表中的语法:

I have tried with the syntax in the form tags, like the syntax a list:

name="otherObjects['${status.index}']"

和地图的语法一样:

name="otherObjects['${id}']"

但两者都出现错误，因为在索引属性路径'otherObjects[0]'中引用的属性既不是数组也不是列表也不是映射"

but both come to an error because "Property referenced in indexed property path 'otherObjects[0]' is neither an array nor a List nor a Map"

我也试过

name="otherObjects"

但这不会填充对象.谁能告诉我如何将数据绑定到 Set 中的对象.

but this doesn't fill the objects. Can anyone tell me how to bind the data to the objects in a Set.

谢谢

推荐答案

根据关于数据绑定的文档，您只能使用括号表示法绑定到自然有序集合"中的嵌套对象.一组不合格.

According to the documentation on data binding, you can only user the bracket notation to bind to nested objects in a "naturally ordered collection". A set doesn't qualify.

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