Best practice to perform batch update

[Madkinder]

My goal is to present a user interface to update several entities at once.

Here's my entity:

@RooJavaBean
@RooSerializable
@RooEntity
public class GoodType {
    @NotNull
    @DecimalMin("0.0")
    @Digits(integer = 4, fraction = 2)
    private Float price;

    @NotNull
    @Size(min = 5, max = 150)
    private String description;
}

The goal is to update prices in bulk. So user needs to see a kind of spreadsheet with some subset of the good types shown. Each row must display the description, current price and a field to put the new price to. Whenever one presses "Save" I need to update the prices in one go. Validation should also be performed and the relevant errors displayed if any.

What is the best approach to achieve that?

I tried to bind directly to List<GoodType> but I didn't manage to design a path expression for <form:input /> tag

[Madkinder]

Don't know how could I miss this post. It addresses almost all the issues I have.