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Former Member
Sep 05, 2017 at 11:28 AM

Datahub transformation logic

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I have few question relating to datahub and going to st new project with a customer.

I am trying to gain common concepts about datahub.

  1. I saw the following config in default saperpproduct-raw-datahub-extension.xml. In the config i see 2 transformation logic defined. How are these 2 transformation calculated. Is the value calculated from first transformation inserted to second transformation and if this is not the case what is the logic behind 2 transformation ?

                     <transformations>
                         <transformation>
                             <rawSource>RawCLSMAS</rawSource>
                             <expression>E1KLAHM-CLASS</expression>
                         </transformation>
                         <transformation>
                             <rawSource>RawCLFMAS</rawSource>
                             <expression spel="true">#root.getField('E1OCLFM-MAFID')
                                         == 'K' ? #root.getField('E1OCLFM-OBJEK') : null</expression>
                         </transformation>
                     </transformations>
    
    
  2. In the same xml file i see transformation defined as input from 2 different raw types : RawCHRMAS and RawCLSMAS. These 2 raw types might be loading from 2 different idocs. Hows does datahub calculates from which 2 RawCHRMAS and RawCLSMAS to pick up data from ?

                       <transformations>
                         <transformation>
                             <rawSource>RawCHRMAS</rawSource>
                             <expression>E1CABNM-ATNAM</expression>
                         </transformation>
                         <transformation>
                             <rawSource>RawCLSMAS</rawSource>
                             <expression>E1KLAHM-E1KSMLM-ATNAM</expression>
                         </transformation>
                     </transformations>
    
    
    

Thank you in advance.