HowTo... enable REIS parallel execution

Preconditions

Ensure that all input and out parameters types are defined in SE11 (table types, estructures, ranges....)

• all parameters passed to REIS ABAP Class via CL_RECA_DATA_CONTAINER are related to a type in dictionary.
• resulting list also should be typed as table type in dictionary

If not, serialization/deserialization errors will occur.

Steps

1. Clone this repo via ABAPGit
2. In REIS report add include zreca_reis_parallel
3. Implement subroutine initialization_rep and in there execute PERFORM on_initialization_par.
4. Implement subroutine at_selection_screen_output_rep and in there execute PERFORM on_selection_screen_output_par.
5. Implement subroutine end_of_selection_rep and in there:
6. Pass to CL_RECA_DATA_CONTAINER relevant selection filter with a dictionary based type
7. Provide CL_RECA_DATA_CONTAINER to set_additional_param
8. Execute subroutine PERFORM execute_reis_report CHANGING go_data lo_param. where lo_param is the CL_RECA_DATA_CONTAINER with the relevant selection screen filters. Do not execute go_data-->complete_data( ). directly as it is executed from that subroutine.
9. Create a REIS data class inheriting from CL_REIS_DATA or any of its subclasses and implement interface zif_reca_reis_parallel_task. Assign that REIS_DATA class to your REIS report.
10. Implement method zif_reca_reis_parallel_task~get_filter_by_objectid to return a unique list of ID's that later on will be used to split the process into several Threads
11. Implement method zif_reca_reis_parallel_task~set_filter_by_objectid to retrieve a list of unique ID's that should be taken into account while executing the data selection. This method will be executed per each Tread to ensure that each one only processes what was splitted in advance.
12. Create an ABAP class implementing zcl_reca_reis_task_process
13. Implement mehtod get_reportid to return the ID of the REIS report that is going to be executed in parallel processing.
14. Add following configuration:
15. via SM30 add new entry in v_tivcaimpl with following values:

Interface	Subtype	ImplClass
IF_RECA_TASK	<your_REIS_id>	<your_abap_class_implementing_zcl_reca_reis_task_process>

Example

You will find an example in report zreisdmoparallel, class zcl_reca_reis_demo_paralleltsk and zcl_reca_reis_demo_parallel. To run it just ensure that this REIS report is configured as follows:

1. add new entry via SM30 in V_TIVISREP with following values

ReportID	Report Title	Program name	Structure name	Class Name	Class Name
ZDMOPAR	Info System: Contracts (Demo Parallel)	ZREISDMOPARALLEL	REIS_CN_L	ZCL_RECA_REIS_DEMO_PARALLEL	CL_REIS_VIEW_DEFAULT

2.via SM30 add new entry in v_tivcaimpl with following values:

Interface	Subtype	ImplClass
IF_RECA_TASK	ZDMOPAR	ZCL_RECA_REIS_DEMO_PARALLELTSK