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Transfer Objects

A Transfer Object is is used for the internal representation of objects. To create a new Transfer Object in scheme, use the (message) procedure.

Properties

:class

The class of the transfer object.

:event

The event on the class of the transfer object.

:version

The version of the request or response contained in the transfer object.

:oid

The object identifier of the contained object.

values

A collection of name, value pairs with the values of the attributes of the class.

Examples

Note that messages are transfer objects.

CODE
(define m (message (: a "A") (: b 2) (: c (message)) (: d (collection (message)))))
(m'a) => "A"
(m'b) => 2
((m'c)'z) => ()
((m'x)'z) => ()
((m'd)'size) => 1
(m'b 3) => 3
(m'b) => 3
(m':contains 'd) => #t
(m':contains "d") => #t
(m':remove 'b) => #t
(m':remove 'b) => #f

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