Xml conversion of data refs with dynamic type

Question

Hi Colleagues,
I have to create an XML from a TYPE REF TO DATA, where this data is created using a dynamic internal table. By dynamic internal table i mean that the internal table is created dynamically using the class method cl_alv_table_create=>create_dynamic_table.
Now the problem that i face is when i use the statement:
CALL TRANSFORMATION id
      SOURCE jsag_data = im_context_b64
      RESULT XML lv_xml
      OPTIONS data_refs = 'embedded'
              value_handling = 'move'.
to generate the XML i get a dump of type CX_XSLT_SERIALIZATION_ERROR saying "The ABAP data cannot be serialized."
I found a solution to avoid the dump by adding the additional option " TECHNICAL_TYPES = 'ignore' " to the  CALL TRANSFORMATION statement, like
CALL TRANSFORMATION id
      SOURCE jsag_data = im_context_b64
      RESULT XML lv_xml
      OPTIONS data_refs = 'embedded'
              value_handling = 'move'
              TECHNICAL_TYPES = 'ignore'.
But, using this addition the dynamic type ref to data part is totally ignored from the XML generation.
If I use a specific DDIC table type to create the data, we do not face this issue and the XML is generated as desired
Does anyone have a solution to this problem as it has become a sort of blockade for our development?
Thanks and Cheers,
Gaurav.

Answer 1

Hello,
I reached same problem with dynamic data references, the only solution I got is to used global DDIC types (also for table types !!) when creating data which needs to be serialized.
The options technical_types = 'ignore' doesn't solve the problem - it just instructs the parser to skip data references without global ddic type. The options value_handling = 'move' is very helpful as XML serialization is very picky about values beeing serialized.
Here is summary of my observations:
- Global DDIC type has to be associated with data reference, otherwise only technical type is there and this is not supported (you can use OPTIONS TECHNICAL_TYPES = u2018IGNOREu2019 but this will just skip the data to be serialized to XML) u2026
- The above means that if you are serializing data reference to table then you have to have also global DDIC type for the table-type !! Unfortunatelly there is no default table type available for transparent tables u2026. They are treated as structures not as table-types u2026 thus:
- CREATE DATA lr_data TYPE <global_ddic_structure> - can be serialized
- CREATE DATA lr_data TYPE STANDARD TABLE OF <global_ddic_structure> - cannot be serialized
- CREATE DATA lr_data TYPE <global_ddic_table_type> - can be serialized
- !! Unfortunatelly !! CREATE DATA lr_data TYPE <type_pool_ddic_structure/ type_pool_table_type> - also cannot be serialized u2013 this is pitty u2026 this should be supported u2026.