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This MR adds a new feature for defining custom query expressions for readonly fields. This operation allows parsing custom query expressions and include them in data model's view adapter.
e.g. A business process needs customer's email address
customer.email
to be an attribute of anOrder
even if it would be retrieved by expandingcustomer
.Define a readonly attribute
orderEmail
where
orderEmail
has a custom query with two stages:Person
collection based oncustomer
attribute of an order.customer.email
as part of an orderThe result will be a new extra field based on an SQL statement equivalent to the following one: