What does it do? The attribute map can be used to specify a list of mapping rules for tt:value, tt:write, and tt:read. This is done to map a list of explicitly specified values to exactly one value when serializing or deserializing. A mapping list consists of a single mapping rule or a comma-separated list of multiple mapping rules. The following mapping rules are possible:
val(a1, a2, ...) > xml(x) This mapping rule is evaluated in serializations. If the value of the current data node matches one of the specified values a1, a2 , ... it is transformed to the value x.
xml(x1, x2, ...) > val(a) This mapping rule is evaluated in deserializations. If the value of the current node matches one of the specified values x1, x2, ... it is transformed to the ABAP value a.
val(a) = xml(x) and xml(x) = val(a) These mapping rules both mean the same thing and are evaluated in both serializations and deserializations. If the value of the current node corresponds to the specified value a, it is converted into value x, and vice versa. The values a, a1, a2, ... must be specified in accordance with the representation of ABAP values. The XML values x, x1, x2, ... must be enclosed in quotation marks.
Latest notes: If mapping rules with more than one argument are used, transformation is usually no longer symmetrical. NON_V5_HINTS ABAP_HINT_END
ABAP_EXAMPLE_VX5 Serialization of ABAP data using a mapping list with transformation DEMO_ST_MAPPING_LIST: TRNS DEMO_ST_MAPPING_LIST The transformation is not symmetrical. In the following ABAP program, field1 and field2 contain the value Person after deserialization. ABEXA 01708 ABAP_EXAMPLE_END
