ABAP Based extractor allows you to use ABAP code as a data source.
Use the following procedure:
- In Extractor Workbench, right-click on ABAP to Storage and choose Create Extractor
2. Fill in following entries:
- Result Structure - SAP table/structure that represents source structure of data
- Target Table HIVE - target GLUE table
- Input Structure - SAP table/structure, that will serve as a filter for class, that is providing data - similar to select-options
- Class Name - SAP class, that implements interface /DVD/GL_EXT_IF_ABAP
Please note: that Target Structure section is automatically generated and its content depends on the defined Input Structure.
3. Save & Activate
4. The next step is to create a Variant.
Technical details
To use a Class as a Data provider, the class must implement interface /DVD/GL_EXT_IF_ABAP.
The interface contains 3 methods:
- INIT - serves for initialization of required information for extraction process; input parameter is select-options from variant
- HAS_DATA - signalizes extraction process, if there are still some data to extract
- GET_NEXT_PACKAGE - provides data that will be replicated to HADOOP