Nearline storage (read 'archive' in look up's)

Question

Hi all,
we need the functionality to read the nearline objects in queries, data loading processes and in look up's. Is there any other customer, who request this functionality?
Regards,
Adrian

Answer 1

Hi Adrian,
At the moment there is no API available for unified access to archived and non-archived data of an InfoProvider (InfoCube or DataStore Object). But there is an API available to access the nearline part of an InfoProvider. The following code example could be used to achieve a unified access to data from the active table of a DataStore Object and its associated nearline part. This example will always return consistent results with only one exception: during the selective deletion phase of an archiving run. In this phase it could happen that a record is retrieved from nearline and from the database table as well.
If you have further questions, please contact the us (the back office) directly.
    Cheers
      SAP NetWeaver 2004s Ramp-Up BI Back Office Team    
TYPE-POOLS:
  rs,
  rsd.
DATA:
  adjprov     TYPE rsadjprov,
  infoprov    TYPE rsinfoprov,
  r_cursor    TYPE REF TO if_rsda_cursor,
  r_dta       TYPE REF TO cl_rsd_dta,
  r_nlprov    TYPE REF TO cl_rsda_nearline_provider,
  r_selset    TYPE REF TO cl_rsmds_set,
  r_universe  TYPE REF TO cl_rsmds_universe,
  t_selfields TYPE if_rsdai_nearline_connection=>t_field_selections,
  t_data      TYPE STANDARD TABLE OF /bic/asbook_d00 WITH DEFAULT KEY,
  wherecond   TYPE string.
infoprov  = 'SBOOK_D'. 
wherecond = '/BIC/CARRID = ''LH'' AND /BIC/FLDATE IN (''19940617'',''19960617'',''19980617'',''20000617'')' .
r_dta = cl_rsd_dta=>factory( infoprov ). "create DTA object for InfoProvider
Check if the DS Object has a nearline archive
IF r_dta->has_adjoint_provider( rsd_c_adjprovtype-nearline ) EQ rs_c_true.
Create an instance of the VirtualProvider associated to the nearline archive of the DS Object
  CALL METHOD cl_rsd_dta=>build_adjprov_from_infoprov
    EXPORTING
      i_infoprov    = infoprov
      i_adjprovtype = rsd_c_adjprovtype-nearline
    IMPORTING
      e_adjprov     = adjprov.
  r_nlprov  ?= cl_rsda_nearline_provider=>factory( adjprov ).
Prepare where condition and selection clause (field list) for the nearline access
  r_universe = r_nlprov->get_universe( ). "This method is available not until SP 8
  r_selset   = r_universe->create_set_from_string( wherecond ).
  CLEAR t_selfields. "request all fields
Create and open a cursor for nearline access
  r_cursor = r_nlprov->open_cursor(
               i_t_selfields = t_selfields
               i_r_selset    = r_selset    ).
  TRY.
    Fetch a data package from the nearline table
      CALL METHOD r_cursor->fetch_next_package
        EXPORTING
          i_package_size = 0                        "fetch all data at once
        IMPORTING
          e_t_data       = t_data.
      r_cursor->close( ).
    CATCH cx_rsda_no_more_data.
  ENDTRY.
ENDIF.
Now select data from the active table and
append selected records (UNION ALL) to the result set table
SELECT * APPENDING TABLE t_data
       FROM /bic/asbook_d00
  WHERE (wherecond).