Calculating Lists

You can also write path expressions that calculate List values that are not stored in the object. For example:

accounts[*].name

When an asterisk is found as an index expression, it implies an iteration over each element of the list. The result of the expression is a list that contains the results of applying the remaining path expression to each element of the list. In the previous example, the result would be a list of String objects. The strings would be taken from the name attribute of each object in the accounts list.

Path expressions with * (asterisk) are used with the FieldLoop construct in forms to replicate a collection of fields.