Editing a product and its attributes in Spring

[Gilbert johnson]

Guys,
I'm kind of stuck here - and my mind is drawing complete blank - it seems like a pretty simple issue - but for some reason I'm not getting it.

I have 2 tables - Product and ProductAttributes. In the product pojo- I have a OneToMany relationship with productAttributes as shown below:

@OneToMany(cascade = CascadeType.ALL, mappedBy = "product", fetch = FetchType.EAGER)
private Set<ProductAttributeValue> attributeValues = new HashSet<ProductAttributeValue>(0);   

Now when I need to display - the product and its values - I would simply load the product and pass it to the JSP page where I'll display the attributes as shown below:

<c:forEach items="${product.attributeValues}" var="a">
<tr>
   <td>${a.attribute.name}:</td>
   <td>${a.value}</td>
</tr>
</c:forEach>

Each product has its own set of attributes. Now I need to create a form where the user can edit the product information like attributes etc.

So I have a product form which contains a set of product attributes. Now how do I display these attribute values in the jsp page so that they are editable.

Basically I'm getting confused on the syntax for path. If my command name is product, what do I put for the path value for attributes:

<c:forEach items="${product.attributeValues}" var="a" varStatus="i">
<tr>
   <td>${a.attribute.name}:</td>
   <td><s:input path="a[${i.index}]" size="12"/>" size="12"/></td>
</tr>
</c:forEach>
 
I dont know what to specify for the input path.
Any help will be appreciated
Thanks