978 lines
34 KiB
ABAP
978 lines
34 KiB
ABAP
"! <p class="shorttext"><strong>ABAP EML in a RAP scenario (managed BO)</strong><br/>ABAP cheat sheet example class</p>
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"!
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"! <p>The example class demonstrates ABAP EML in the context of a RAP demo scenario
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"! (managed RAP BO with external numbering). The class represents a RAP BO consumer.<br/>
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"! Choose F9 in ADT to run the class.</p>
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"!
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"! <h2>Note</h2>
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"! <ul><li>This class is the RAP BO consumer for a RAP demo scenario that
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"! demonstrates various RAP BO standard operations and non-standard
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"! operations using ABAP EML in the context of a managed RAP business
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"! object with RAP external numbering.</li>
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"! <li>Topics covered: RAP BO operations like create (including a
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"! determination on save), update, delete, executing an action, validation,
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"! create-by-association (parent to child), read (root entity),
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"! read-by-association (parent to child), read (child entity),
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"! read-by-association (child to parent)</li>
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"! <li>Underlying data model: Consists of a root entity and one child entity.
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"! The BDEF defines the behavior for these two entities which are connected
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"! via a CDS composition relation. The definitions in the BDEF determine
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"! which methods must be implemented in the ABAP behavior pool (ABP).</li>
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"! <li>ABP for this scenario: {@link zbp_demo_abap_rap_ro_m}.</li>
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"! <li> This simplified example is not a real life scenario and rather
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"! focuses on the technical side by giving an idea how the communication
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"! and data exchange between a RAP BO consumer, which is a class
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"! in this case, and RAP BO provider can work. Additionally, it shows
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"! how the methods for non-standard RAP BO operations might be
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"! self-implemented in an ABP. The example is intentionally kept
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"! short and simple and focuses on specific RAP aspects. For this reason,
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"! the example might not fully meet the requirements of the RAP BO contract.</li>
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"! <li>Find information on <strong>getting started with the example class</strong> and the
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"! <strong>disclaimer</strong> in the ABAP Doc comment of class {@link zcl_demo_abap_aux}.</li>
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"! </ul>
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CLASS zcl_demo_abap_rap_ext_num_m DEFINITION
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PUBLIC
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FINAL
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CREATE PUBLIC .
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PUBLIC SECTION.
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INTERFACES: if_oo_adt_classrun.
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CLASS-METHODS:
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class_constructor.
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PROTECTED SECTION.
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PRIVATE SECTION.
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CLASS-DATA:
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failed TYPE RESPONSE FOR FAILED zdemo_abap_rap_ro_m,
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reported TYPE RESPONSE FOR REPORTED zdemo_abap_rap_ro_m,
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mapped TYPE RESPONSE FOR MAPPED zdemo_abap_rap_ro_m,
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op TYPE string.
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CLASS-METHODS:
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initialize_dbtabs,
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"If there are entries in the response parameters following EML
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"requests, they should be processed for displaying purposes.
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extract_from_reported RETURNING VALUE(messages) TYPE string_table,
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extract_from_failed RETURNING VALUE(errors) TYPE string_table,
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fill_db_tab.
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ENDCLASS.
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CLASS zcl_demo_abap_rap_ext_num_m IMPLEMENTATION.
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METHOD class_constructor.
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initialize_dbtabs( ).
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ENDMETHOD.
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METHOD extract_from_failed.
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CLEAR errors.
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LOOP AT failed-root ASSIGNING FIELD-SYMBOL(<err>).
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CASE if_abap_behv=>mk-on.
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WHEN <err>-%op-%create.
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op = `create operation`.
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WHEN <err>-%op-%update.
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op = `update operation`.
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WHEN <err>-%op-%delete.
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op = `delete operation`.
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WHEN <err>-%op-%assoc-_child.
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op = `operation involving the child entity`.
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WHEN <err>-%op-%action-multiply_by_2.
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op = `executing action multiply_by_2`.
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WHEN OTHERS. op = `operation`.
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ENDCASE.
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APPEND `Error for instance with ` &&
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COND #( WHEN <err>-%cid IS NOT INITIAL THEN `%cid = `
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&& <err>-%cid
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ELSE `key = ` && <err>-key_field ) &&
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`: Fail cause ` && <err>-%fail-cause && ` for ` && op
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&& `.` TO errors.
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ENDLOOP.
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IF failed-child IS NOT INITIAL.
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LOOP AT failed-child ASSIGNING FIELD-SYMBOL(<err_ch>).
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APPEND `Error for child instance with key_field = ` &&
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<err_ch>-key_field && ` and key_ch = ` &&
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<err_ch>-key_ch && `: Fail cause `
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&& <err_ch>-%fail-cause && `.` TO errors.
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ENDLOOP.
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ENDIF.
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ENDMETHOD.
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METHOD extract_from_reported.
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CLEAR messages.
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LOOP AT reported-root ASSIGNING FIELD-SYMBOL(<rep>).
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IF <rep>-%global = if_abap_behv=>mk-on.
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APPEND <rep>-%msg->m_severity &&
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<rep>-%msg->if_t100_dyn_msg~msgv1 TO messages.
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ELSE.
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APPEND `Message for instance with ` &&
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COND #( WHEN <rep>-%cid IS NOT INITIAL
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THEN `%cid = ` && <rep>-%cid
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ELSE `key = ` && <rep>-key_field ) &&
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`: ` && <rep>-%msg->m_severity && ` ` &&
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<rep>-%msg->if_t100_dyn_msg~msgv1 TO messages.
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ENDIF.
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ENDLOOP.
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IF reported-child IS NOT INITIAL.
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LOOP AT reported-child ASSIGNING FIELD-SYMBOL(<rep_ch>).
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APPEND `Message for child instance with key_field = ` &&
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<rep_ch>-key_field && ` and key_ch = `
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&& <rep_ch>-key_ch && `: ` && <rep_ch>-%msg->m_severity &&
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` ` && <rep_ch>-%msg->if_t100_dyn_msg~msgv1 TO messages.
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ENDLOOP.
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ENDIF.
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ENDMETHOD.
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METHOD fill_db_tab.
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MODIFY zdemo_abap_rapt1 FROM TABLE @( VALUE #(
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( key_field = 4
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field1 = 'ggg'
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field2 = 'hhh'
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field3 = 40
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field4 = 41 ) ) ).
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ENDMETHOD.
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METHOD if_oo_adt_classrun~main.
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out->write( |ABAP Cheat Sheet Example: RAP BO Operations Using a Managed RAP BO\n\n| ).
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**********************************************************************
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*
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* Create operation
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*
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**********************************************************************
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out->write( |1) Create operation\n\n| ).
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"Adding an entry to the database table to provoke an error for the
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"EML create request.
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fill_db_tab( ).
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**********************************************************************
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* Notes:
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* - field4 is purposely not included in the FIELDS list
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* - Effect:
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* - %control value for field4 is set to if_abap_behv=>mk-off
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* - Although the derived type (created inline here) includes a
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* value assignment for field4 in an instance, the field value is
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* not saved. The initial value is used.
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* - The instance with key_field = 4 will not be saved since an entry
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* already exists in the database table with the same key.
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* - Response parameters are specified to receive information.
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* - A COMMIT ENTITIES statement triggers the saving of the instances.
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* - The example BDEF includes the definition of a determination on
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* save for create operations. In this case, the determination
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* adds some text to the value in field2.
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**********************************************************************
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MODIFY ENTITIES OF zdemo_abap_rap_ro_m
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ENTITY root
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CREATE FIELDS ( key_field field1 field2 field3 )
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WITH VALUE #( ( %cid = 'cid1'
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key_field = 1
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field1 = 'aaa'
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field2 = 'bbb'
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field3 = 10
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field4 = 11 ) "Value not considered
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( %cid = 'cid2'
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key_field = 2
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field1 = 'ccc'
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field2 = 'ddd'
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field3 = 20 )
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( %cid = 'cid3'
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key_field = 3
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field1 = 'eee'
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field2 = 'fff'
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field3 = 30 )
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( %cid = 'cid4' "Instance to fail
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key_field = 4
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field1 = 'error'
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field2 = 'error'
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field3 = 99 ) )
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MAPPED mapped
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FAILED failed
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REPORTED reported.
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COMMIT ENTITIES.
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IF sy-subrc <> 0.
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out->write( `An issue occurred in the RAP save sequence.` ).
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ENDIF.
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"Retrieving and displaying database content
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SELECT FROM zdemo_abap_rapt1
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FIELDS key_field, field1, field2, field3, field4
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ORDER BY key_field
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INTO TABLE @DATA(tab_root).
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out->write( data = tab_root name = `tab_root` ).
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out->write( |\n| ).
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"Displaying response information
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IF mapped-root IS NOT INITIAL.
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out->write( `Entries in MAPPED response parameter ` &&
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`(root entity)` ).
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out->write( |\n| ).
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out->write( data = mapped-root name = `mapped-root` ).
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out->write( |\n| ).
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ENDIF.
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IF failed IS NOT INITIAL.
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out->write( `Entries in FAILED response parameter` ).
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out->write( |\n| ).
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out->write( data = extract_from_failed( ) name = `extract_from_failed( )` ).
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out->write( |\n| ).
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ENDIF.
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IF reported IS NOT INITIAL.
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out->write( `Entries in REPORTED response parameter` ).
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out->write( |\n| ).
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out->write( data = extract_from_reported( ) name = `extract_from_reported( )` ).
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out->write( |\n| ).
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ENDIF.
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**********************************************************************
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*
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* Update operations
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*
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**********************************************************************
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out->write( zcl_demo_abap_aux=>heading( `2) Update operation` ) ).
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**********************************************************************
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* Notes:
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* - The EML request includes a create and an update request. The
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* create request is included to have a %cid to refer to for demo
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* purposes. This instance has not yet been persisted.
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* - The EML statement for the create operation includes the ABAP
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* FROM ... (instead of FIELDS ( ... ) WITH ...) for demo purposes.
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* Here, the %control values must be set explicitly.
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* - The update request purposely excludes field2 so as not to update
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* the value of this particular field.
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**********************************************************************
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MODIFY ENTITIES OF zdemo_abap_rap_ro_m
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ENTITY root
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CREATE FROM VALUE #(
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%control-key_field = if_abap_behv=>mk-on
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%control-field1 = if_abap_behv=>mk-on
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%control-field2 = if_abap_behv=>mk-on
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%control-field3 = if_abap_behv=>mk-on
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%control-field4 = if_abap_behv=>mk-on
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( %cid = 'cid5'
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key_field = 5
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field1 = 'iii'
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field2 = 'jjj'
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field3 = 50
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field4 = 51 ) )
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UPDATE FIELDS ( field1 field3 field4 )
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WITH VALUE #(
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"Update via cid_ref
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( %cid_ref = 'cid5'
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field1 = 'up_kkk'
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field2 = 'up_lll' "Value not considered
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field3 = 500
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field4 = 501 )
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"Updates via key
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( key_field = 1
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field1 = 'up_mmm'
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field3 = 100
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field4 = 101 )
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( key_field = 2
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field1 = 'up_ooo'
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field3 = 200
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field4 = 201 )
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( key_field = 99 "Instance to fail
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field1 = 'error'
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field3 = 99
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field4 = 99 ) )
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MAPPED mapped
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FAILED failed
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REPORTED reported.
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COMMIT ENTITIES.
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IF sy-subrc <> 0.
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out->write( `An issue occurred in the RAP save sequence.` ).
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ENDIF.
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"Retrieving and displaying database content
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SELECT FROM zdemo_abap_rapt1
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FIELDS key_field, field1, field2, field3, field4
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ORDER BY key_field
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INTO TABLE @tab_root.
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out->write( data = tab_root name = `tab_root` ).
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out->write( |\n| ).
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"Displaying response information
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IF mapped-root IS NOT INITIAL.
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out->write( `Entries in MAPPED response parameter ` &&
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`(root entity)` ).
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out->write( |\n| ).
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out->write( data = mapped-root name = `mapped-root` ).
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out->write( |\n| ).
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ENDIF.
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IF failed IS NOT INITIAL.
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out->write( `Entries in FAILED response parameter` ).
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out->write( |\n| ).
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out->write( data = extract_from_failed( ) name = `extract_from_failed( )` ).
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out->write( |\n| ).
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ENDIF.
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IF reported IS NOT INITIAL.
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out->write( `Entries in REPORTED response parameter` ).
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out->write( |\n| ).
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out->write( data = extract_from_reported( ) name = `extract_from_reported( )` ).
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out->write( |\n| ).
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ENDIF.
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**********************************************************************
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*
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* Delete operation
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*
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**********************************************************************
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out->write( zcl_demo_abap_aux=>heading( `3) Delete operation` ) ).
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**********************************************************************
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* Notes:
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* - The EML request includes a create and an delete request. The
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* create request is included to have a %cid to refer to for demo
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* purposes. This instance has not yet been persisted.
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* - EML statements for delete operations can only be used with the
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* ABAP word FROM ....
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**********************************************************************
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MODIFY ENTITIES OF zdemo_abap_rap_ro_m
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ENTITY root
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CREATE FIELDS ( key_field field1 field2 field3 field4 )
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WITH VALUE #(
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( %cid = 'cid_del'
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key_field = 6
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field1 = 'mmm'
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field2 = 'nnn'
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field3 = 60
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field4 = 61 ) )
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DELETE FROM VALUE #(
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"Deletion via %cid_ref
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( %cid_ref = 'cid_del' )
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"Deletions via key
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( key_field = 4 )
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( key_field = 5 )
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"Instance to fail
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( key_field = 100 ) ) "Key not available
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MAPPED mapped
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FAILED failed
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REPORTED reported.
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COMMIT ENTITIES.
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IF sy-subrc <> 0.
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out->write( `An issue occurred in the RAP save sequence.` ).
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ENDIF.
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"Retrieving and displaying database content
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SELECT FROM zdemo_abap_rapt1
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FIELDS key_field, field1, field2, field3, field4
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ORDER BY key_field
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INTO TABLE @tab_root.
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out->write( data = tab_root name = `tab_root` ).
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out->write( |\n| ).
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"Displaying response information
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IF mapped-root IS NOT INITIAL.
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out->write( `Entries in MAPPED response parameter ` &&
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`(root entity)` ).
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out->write( |\n| ).
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out->write( data = mapped-root name = `mapped-root` ).
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out->write( |\n| ).
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ENDIF.
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IF failed IS NOT INITIAL.
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out->write( `Entries in FAILED response parameter` ).
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out->write( |\n| ).
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out->write( data = extract_from_failed( ) name = `extract_from_failed( )` ).
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out->write( |\n| ).
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ENDIF.
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IF reported IS NOT INITIAL.
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out->write( `Entries in REPORTED response parameter` ).
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out->write( |\n| ).
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out->write( data = extract_from_reported( ) name = `extract_from_reported( )` ).
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out->write( |\n| ).
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ENDIF.
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**********************************************************************
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*
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* Action multiply_by_2
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*
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**********************************************************************
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out->write( zcl_demo_abap_aux=>heading( `4) Action execution: mutliply_by_2` ) ).
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**********************************************************************
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* Notes:
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* - The EML request includes a create request and a request to execute
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* an action. The create request is included to have a %cid to refer
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* to for demo purposes. This instance has not yet been persisted.
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* - EML statements for executing actions can only be used with the
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* ABAP word FROM ....
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* - As the name implies, the action multiplies field
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* values (field3 and field4) by 2 for requested instances.
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**********************************************************************
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MODIFY ENTITIES OF zdemo_abap_rap_ro_m
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ENTITY root
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CREATE FIELDS ( key_field field1 field2 field3 field4 )
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WITH VALUE #(
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( %cid = 'cid_x2'
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key_field = 7
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field1 = 'ooo'
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field2 = 'ppp'
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field3 = 70
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field4 = 71 ) )
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EXECUTE multiply_by_2 FROM VALUE #(
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"Executing action via %cid_ref
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( %cid_ref = 'cid_x2' )
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"Executing action via key
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( key_field = 1 )
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( key_field = 2 )
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( key_field = 1234 ) ) "Instance to fail
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MAPPED mapped
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FAILED failed
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REPORTED reported.
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COMMIT ENTITIES.
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IF sy-subrc <> 0.
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out->write( `An issue occurred in the RAP save sequence.` ).
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ENDIF.
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"Retrieving and displaying database content
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SELECT FROM zdemo_abap_rapt1
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FIELDS key_field, field1, field2, field3, field4
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ORDER BY key_field
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INTO TABLE @tab_root.
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out->write( data = tab_root name = `tab_root` ).
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out->write( |\n| ).
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"Displaying response information
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IF mapped-root IS NOT INITIAL.
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out->write( `Entries in MAPPED response parameter ` &&
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`(root entity)` ).
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out->write( |\n| ).
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out->write( data = mapped-root name = `mapped-root` ).
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out->write( |\n| ).
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ENDIF.
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IF failed IS NOT INITIAL.
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out->write( `Entries in FAILED response parameter` ).
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out->write( |\n| ).
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out->write( data = extract_from_failed( ) name = `extract_from_failed( )` ).
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out->write( |\n| ).
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ENDIF.
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IF reported IS NOT INITIAL.
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out->write( `Entries in REPORTED response parameter` ).
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out->write( |\n| ).
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out->write( data = extract_from_reported( ) name = `extract_from_reported( )` ).
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out->write( |\n| ).
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ENDIF.
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**********************************************************************
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*
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* Create-by-association operation (from root to child entity)
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*
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**********************************************************************
|
|
|
|
out->write( zcl_demo_abap_aux=>heading( `5) Create-by-association operation (from parent to child)` ) ).
|
|
|
|
**********************************************************************
|
|
* Notes:
|
|
* - The EML request includes a create and create-by-association
|
|
* request, i. e. a "deep create". An instance is created for the
|
|
* parent entity and, in the same request and based on this
|
|
* instance, instances are created for the child entity, too.
|
|
**********************************************************************
|
|
|
|
MODIFY ENTITIES OF zdemo_abap_rap_ro_m
|
|
ENTITY root
|
|
CREATE FIELDS ( key_field field1 field2 field3 field4 )
|
|
WITH VALUE #(
|
|
( %cid = 'cid_cba'
|
|
key_field = 9
|
|
field1 = 'qqq'
|
|
field2 = 'rrr'
|
|
field3 = 90
|
|
field4 = 91 ) )
|
|
CREATE BY \_child
|
|
FIELDS ( key_ch field_ch1 field_ch2 ) WITH VALUE #(
|
|
"CBA operation via %cid_ref
|
|
( %cid_ref = 'cid_cba'
|
|
%target = VALUE #( ( %cid = 'cid_ch1'
|
|
key_ch = 9
|
|
field_ch1 = 'aaa_ch'
|
|
field_ch2 = 99 )
|
|
( %cid = 'cid_ch2'
|
|
key_ch = 10
|
|
field_ch1 = 'bbb_ch'
|
|
field_ch2 = 100 ) ) )
|
|
"CBA operation via root key
|
|
( key_field = 1
|
|
%target = VALUE #( ( %cid = 'cid_ch3'
|
|
key_ch = 1
|
|
field_ch1 = 'ccc_ch'
|
|
field_ch2 = 11 )
|
|
( %cid = 'cid_ch4'
|
|
key_ch = 2
|
|
field_ch1 = 'ddd_ch'
|
|
field_ch2 = 22 ) ) )
|
|
( key_field = 2
|
|
%target = VALUE #( ( %cid = 'cid_ch5'
|
|
key_ch = 3
|
|
field_ch1 = 'ccc_ch'
|
|
field_ch2 = 33 )
|
|
( %cid = 'cid_ch6'
|
|
key_ch = 4
|
|
field_ch1 = 'ddd_ch'
|
|
field_ch2 = 44 ) ) )
|
|
"Instance to fail
|
|
( key_field = 123
|
|
%target = VALUE #( ( %cid = 'cid_ch7'
|
|
key_ch = 1
|
|
field_ch1 = 'error'
|
|
field_ch2 = 2 )
|
|
( %cid = 'cid_ch8'
|
|
key_ch = 2
|
|
field_ch1 = 'error'
|
|
field_ch2 = 3 ) ) )
|
|
)
|
|
MAPPED mapped
|
|
FAILED failed
|
|
REPORTED reported.
|
|
|
|
COMMIT ENTITIES.
|
|
|
|
IF sy-subrc <> 0.
|
|
out->write( `An issue occurred in the RAP save sequence.` ).
|
|
ENDIF.
|
|
|
|
"Retrieving and displaying database content
|
|
SELECT FROM zdemo_abap_rapt1
|
|
FIELDS key_field, field1, field2, field3, field4
|
|
ORDER BY key_field
|
|
INTO TABLE @tab_root.
|
|
|
|
SELECT FROM zdemo_abap_rapt2
|
|
FIELDS key_field, key_ch, field_ch1, field_ch2
|
|
ORDER BY key_field, key_ch
|
|
INTO TABLE @DATA(tab_child).
|
|
|
|
out->write( data = tab_root name = `tab_root` ).
|
|
out->write( |\n| ).
|
|
out->write( data = tab_child name = `tab_child` ).
|
|
out->write( |\n| ).
|
|
|
|
"Displaying response information
|
|
IF mapped IS NOT INITIAL.
|
|
out->write( `Entries in MAPPED response parameter ` &&
|
|
`(root and child entity)` ).
|
|
out->write( |\n| ).
|
|
out->write( data = mapped name = `mapped` ).
|
|
out->write( |\n| ).
|
|
ENDIF.
|
|
|
|
IF failed IS NOT INITIAL.
|
|
out->write( `Entries in FAILED response parameter` ).
|
|
out->write( |\n| ).
|
|
out->write( data = extract_from_failed( ) name = `extract_from_failed( )` ).
|
|
out->write( |\n| ).
|
|
ENDIF.
|
|
|
|
IF reported IS NOT INITIAL.
|
|
out->write( `Entries in REPORTED response parameter` ).
|
|
out->write( |\n| ).
|
|
out->write( data = extract_from_reported( ) name = `extract_from_reported( )` ).
|
|
out->write( |\n| ).
|
|
ENDIF.
|
|
|
|
**********************************************************************
|
|
*
|
|
* Validation val
|
|
*
|
|
**********************************************************************
|
|
|
|
out->write( zcl_demo_abap_aux=>heading( `6) Validation val` ) ).
|
|
|
|
**********************************************************************
|
|
* Notes:
|
|
* - The EML request includes a create request. The validation's
|
|
* handler method is implementation in a way that the saving of
|
|
* instances is disabled if a field value is not allowed. In this
|
|
* example, the value of the integer in field3 shall not exceed 1000.
|
|
* Here, the third instance will fail for the validation.
|
|
* Consequently, all instances of this request are not saved to the
|
|
* database. Either all is ok and will be saved or nothing.
|
|
* - Note that the response information for the validation is only
|
|
* available in the response parameters of the COMMIT ENTITIES
|
|
* statement. Here, the BDEF derived type is
|
|
* ... TYPE RESPONSE FOR ... LATE ....
|
|
**********************************************************************
|
|
|
|
MODIFY ENTITIES OF zdemo_abap_rap_ro_m
|
|
ENTITY root
|
|
CREATE FIELDS ( key_field field1 field2 field3 field4 )
|
|
WITH VALUE #(
|
|
( %cid = 'cid_val1'
|
|
key_field = 123
|
|
field1 = 'sss'
|
|
field2 = 'ttt'
|
|
field3 = 1
|
|
field4 = 2 )
|
|
( %cid = 'cid_val2'
|
|
key_field = 456
|
|
field1 = 'uuu'
|
|
field2 = 'vvv'
|
|
field3 = 3
|
|
field4 = 4 )
|
|
( %cid = 'cid_val3'
|
|
key_field = 789
|
|
field1 = 'www'
|
|
field2 = 'xxx'
|
|
field3 = 1001
|
|
field4 = 5 ) )
|
|
MAPPED mapped
|
|
FAILED failed
|
|
REPORTED reported.
|
|
|
|
COMMIT ENTITIES RESPONSES
|
|
FAILED DATA(failed_late)
|
|
REPORTED DATA(reported_late).
|
|
|
|
IF sy-subrc <> 0.
|
|
out->write( `An issue occurred in the RAP save sequence.` ).
|
|
ENDIF.
|
|
|
|
"Retrieving and displaying database content
|
|
SELECT FROM zdemo_abap_rapt1
|
|
FIELDS key_field, field1, field2, field3, field4
|
|
ORDER BY key_field
|
|
INTO TABLE @tab_root.
|
|
|
|
out->write( data = tab_root name = `tab_root` ).
|
|
out->write( |\n| ).
|
|
|
|
"Displaying response information
|
|
IF mapped IS NOT INITIAL.
|
|
out->write( `Entries in MAPPED response parameter ` &&
|
|
`(root and child entity)` ).
|
|
out->write( |\n| ).
|
|
out->write( data = mapped name = `mapped` ).
|
|
out->write( |\n| ).
|
|
ENDIF.
|
|
|
|
IF failed_late IS NOT INITIAL.
|
|
out->write( `Entries in FAILED LATE response parameter` ).
|
|
out->write( |\n| ).
|
|
out->write( data = failed_late name = `failed_late` ).
|
|
out->write( |\n| ).
|
|
ENDIF.
|
|
|
|
IF reported_late IS NOT INITIAL.
|
|
out->write( `Entries in REPORTED LATE response parameter` ).
|
|
out->write( |\n| ).
|
|
out->write( data = reported_late name = `reported_late` ).
|
|
out->write( |\n| ).
|
|
ENDIF.
|
|
|
|
**********************************************************************
|
|
*
|
|
* Read operation (root entity)
|
|
*
|
|
**********************************************************************
|
|
|
|
out->write( zcl_demo_abap_aux=>heading( `7) Read operation (root entity)` ) ).
|
|
|
|
**********************************************************************
|
|
* Notes:
|
|
* - The EML request includes a read request. The EML statement uses
|
|
* the ABAP words ALL FIELDS WITH. In this case, as the name implies,
|
|
* all field values are retrieved. The %control values for all fields
|
|
* are set to if_abap_behv=>mk-on.
|
|
* - When using the ABAP words FIELDS ( ... ) WITH and specifying the
|
|
* concrete fields to be read, only for those fields %control is
|
|
* set accordingly.
|
|
* - Filling the parameter for RESULT is mandatory.
|
|
**********************************************************************
|
|
|
|
READ ENTITIES OF zdemo_abap_rap_ro_m
|
|
ENTITY root
|
|
ALL FIELDS WITH VALUE #(
|
|
( key_field = 1 )
|
|
( key_field = 2 )
|
|
( key_field = 7 )
|
|
( key_field = 5 ) ) "Instance to fail
|
|
RESULT DATA(result)
|
|
FAILED failed
|
|
REPORTED reported.
|
|
|
|
"Displaying the read result
|
|
out->write( data = result name = `result` ).
|
|
out->write( |\n| ).
|
|
|
|
"Displaying response information
|
|
IF failed IS NOT INITIAL.
|
|
out->write( `Entries in FAILED response parameter` ).
|
|
out->write( |\n| ).
|
|
out->write( data = extract_from_failed( ) name = `extract_from_failed( )` ).
|
|
out->write( |\n| ).
|
|
ENDIF.
|
|
IF reported IS NOT INITIAL.
|
|
out->write( `Entries in REPORTED response parameter` ).
|
|
out->write( |\n| ).
|
|
out->write( data = extract_from_reported( ) name = `extract_from_reported( )` ).
|
|
out->write( |\n| ).
|
|
ENDIF.
|
|
|
|
*********************************************************************
|
|
*
|
|
* Read operation (child entity)
|
|
*
|
|
**********************************************************************
|
|
|
|
out->write( zcl_demo_abap_aux=>heading( `8) Read operation (child entity)` ) ).
|
|
|
|
**********************************************************************
|
|
* Notes:
|
|
* - The EML request includes a read request. The read operation is
|
|
* executed on the child entity directly by specifying the alias, as
|
|
* it is defined in the BDEF, following the ABAP word ENTITY.
|
|
* - All field values are read using the addition ALL FIELDS WITH.
|
|
**********************************************************************
|
|
|
|
READ ENTITIES OF zdemo_abap_rap_ro_m
|
|
ENTITY child
|
|
ALL FIELDS WITH VALUE #(
|
|
( key_field = 1 key_ch = 1 )
|
|
( key_field = 2 key_ch = 4 )
|
|
"Instances to fail
|
|
( key_field = 9 )
|
|
( key_field = 9 key_ch = 11 ) )
|
|
RESULT DATA(read_ch)
|
|
FAILED failed
|
|
REPORTED reported.
|
|
|
|
"Displaying read result
|
|
out->write( data = read_ch name = `read_ch` ).
|
|
out->write( |\n| ).
|
|
|
|
|
|
"Displaying response information
|
|
IF failed IS NOT INITIAL.
|
|
out->write( `Entries in FAILED response parameter` ).
|
|
out->write( |\n| ).
|
|
out->write( data = extract_from_failed( ) name = `extract_from_failed( )` ).
|
|
out->write( |\n| ).
|
|
ENDIF.
|
|
IF reported IS NOT INITIAL.
|
|
out->write( `Entries in REPORTED response parameter` ).
|
|
out->write( |\n| ).
|
|
out->write( data = extract_from_reported( ) name = `extract_from_reported( )` ).
|
|
out->write( |\n| ).
|
|
ENDIF.
|
|
|
|
**********************************************************************
|
|
*
|
|
* Read-by-association operation (from parent to child)
|
|
*
|
|
**********************************************************************
|
|
|
|
out->write( zcl_demo_abap_aux=>heading( `9) Read-by-association operation (from parent to child)` ) ).
|
|
|
|
**********************************************************************
|
|
* Notes:
|
|
* - The EML request includes a read-by-association request from the
|
|
* parent to the child.
|
|
* - All field values are read using the addition ALL FIELDS WITH.
|
|
* - Specifying the parameter for RESULT is mandatory.
|
|
* - Additionally, the optional association links are retrieved.
|
|
**********************************************************************
|
|
|
|
READ ENTITIES OF zdemo_abap_rap_ro_m
|
|
ENTITY root
|
|
BY \_child
|
|
ALL FIELDS WITH VALUE #(
|
|
( key_field = 2 )
|
|
( key_field = 9 )
|
|
( key_field = 999 ) ) "Instance to fail
|
|
RESULT DATA(rba_result)
|
|
LINK DATA(association_links)
|
|
FAILED failed
|
|
REPORTED reported.
|
|
|
|
"Displaying read result and association links
|
|
out->write( data = rba_result name = `rba_result` ).
|
|
out->write( |\n| ).
|
|
out->write( data = association_links name = `association_links` ).
|
|
out->write( |\n| ).
|
|
|
|
"Displaying response information
|
|
IF failed IS NOT INITIAL.
|
|
out->write( `Entries in FAILED response parameter` ).
|
|
out->write( |\n| ).
|
|
out->write( data = extract_from_failed( ) name = `extract_from_failed( )` ).
|
|
out->write( |\n| ).
|
|
ENDIF.
|
|
IF reported IS NOT INITIAL.
|
|
out->write( `Entries in REPORTED response parameter` ).
|
|
out->write( |\n| ).
|
|
out->write( data = extract_from_reported( ) name = `extract_from_reported( )` ).
|
|
out->write( |\n| ).
|
|
ENDIF.
|
|
|
|
**********************************************************************
|
|
*
|
|
* Read-by-association operation (from child to parent)
|
|
*
|
|
**********************************************************************
|
|
|
|
out->write( zcl_demo_abap_aux=>heading( `10) Read-by-association operation (from child to parent)` ) ).
|
|
|
|
**********************************************************************
|
|
* Notes:
|
|
* - The EML request includes a read-by-association request from the
|
|
* child to the parent.
|
|
* - All field values are read using the addition ALL FIELDS WITH.
|
|
* - Specifying the parameter for RESULT is mandatory.
|
|
* - Additionally, the optional association links are retrieved.
|
|
**********************************************************************
|
|
|
|
READ ENTITIES OF zdemo_abap_rap_ro_m
|
|
ENTITY child
|
|
BY \_parent ALL FIELDS WITH VALUE #(
|
|
( key_field = 1 key_ch = 1 )
|
|
( key_field = 2 key_ch = 4 )
|
|
"Instances to fail
|
|
( key_field = 1 key_ch = 3 )
|
|
( key_field = 543 key_ch = 1 ) )
|
|
RESULT DATA(rba_parent)
|
|
LINK DATA(association_links_parent)
|
|
FAILED failed
|
|
REPORTED reported.
|
|
|
|
"Displaying read result and association links
|
|
out->write( data = rba_parent name = `rba_parent` ).
|
|
out->write( |\n| ).
|
|
out->write( data = association_links_parent name = `association_links_parent` ).
|
|
out->write( |\n| ).
|
|
|
|
"Displaying response information
|
|
IF failed IS NOT INITIAL.
|
|
out->write( `Entries in FAILED response parameter` ).
|
|
out->write( |\n| ).
|
|
out->write( data = extract_from_failed( ) name = `extract_from_failed( )` ).
|
|
out->write( |\n| ).
|
|
ENDIF.
|
|
IF reported IS NOT INITIAL.
|
|
out->write( `Entries in REPORTED response parameter` ).
|
|
out->write( |\n| ).
|
|
out->write( data = extract_from_reported( ) name = `extract_from_reported( )` ).
|
|
out->write( |\n| ).
|
|
ENDIF.
|
|
|
|
**********************************************************************
|
|
*
|
|
* Excursion: Read and read-by-association operation using a dynamic
|
|
* EML statement
|
|
*
|
|
**********************************************************************
|
|
|
|
out->write( zcl_demo_abap_aux=>heading( `11) Excursion: Read and read-by-association ` &&
|
|
`operations using dynamic EML` ) ).
|
|
DATA:
|
|
op_tab TYPE abp_behv_retrievals_tab,
|
|
read_dyn TYPE TABLE FOR READ IMPORT zdemo_abap_rap_ro_m,
|
|
read_dyn_result TYPE TABLE FOR READ RESULT zdemo_abap_rap_ro_m,
|
|
rba_dyn TYPE TABLE FOR READ IMPORT
|
|
zdemo_abap_rap_ro_m\_child,
|
|
rba_dyn_result TYPE TABLE FOR READ RESULT
|
|
zdemo_abap_rap_ro_m\_child,
|
|
rba_dyn_link TYPE TABLE FOR READ LINK zdemo_abap_rap_ro_m\_child.
|
|
|
|
read_dyn = VALUE #(
|
|
( %key-key_field = 1
|
|
%control = VALUE #(
|
|
field1 = if_abap_behv=>mk-on
|
|
field2 = if_abap_behv=>mk-on
|
|
field3 = if_abap_behv=>mk-on
|
|
field4 = if_abap_behv=>mk-on ) )
|
|
( %key-key_field = 2
|
|
%control = VALUE #(
|
|
field1 = if_abap_behv=>mk-on
|
|
field2 = if_abap_behv=>mk-on
|
|
field3 = if_abap_behv=>mk-on
|
|
field4 = if_abap_behv=>mk-on ) ) ).
|
|
|
|
rba_dyn = VALUE #(
|
|
( %key-key_field = 1
|
|
%control = VALUE #(
|
|
key_ch = if_abap_behv=>mk-on
|
|
field_ch1 = if_abap_behv=>mk-on
|
|
field_ch2 = if_abap_behv=>mk-on ) )
|
|
( %key-key_field = 2
|
|
%control = VALUE #(
|
|
key_ch = if_abap_behv=>mk-on
|
|
field_ch1 = if_abap_behv=>mk-on
|
|
field_ch2 = if_abap_behv=>mk-on ) ) ).
|
|
|
|
op_tab = VALUE #(
|
|
( op = if_abap_behv=>op-r-read
|
|
entity_name = 'ZDEMO_ABAP_RAP_RO_M'
|
|
instances = REF #( read_dyn )
|
|
results = REF #( read_dyn_result ) )
|
|
( op = if_abap_behv=>op-r-read_ba
|
|
entity_name = 'ZDEMO_ABAP_RAP_RO_M'
|
|
sub_name = '_CHILD'
|
|
full = abap_true
|
|
instances = REF #( rba_dyn )
|
|
results = REF #( rba_dyn_result )
|
|
links = REF #( rba_dyn_link ) ) ).
|
|
|
|
READ ENTITIES OPERATIONS op_tab.
|
|
|
|
out->write( `Read result (root)` ).
|
|
out->write( |\n| ).
|
|
out->write( data = read_dyn_result name = `read_dyn_result` ).
|
|
out->write( |\n| ).
|
|
out->write( `Read result (read-by-association)` ).
|
|
out->write( |\n| ).
|
|
out->write( data = rba_dyn_result name = `rba_dyn_result` ).
|
|
out->write( |\n| ).
|
|
out->write( `Links` ).
|
|
out->write( |\n| ).
|
|
out->write( data = rba_dyn_link name = `rba_dyn_link` ).
|
|
ENDMETHOD.
|
|
|
|
METHOD initialize_dbtabs.
|
|
DELETE FROM zdemo_abap_rapt1.
|
|
DELETE FROM zdemo_abap_rapt2.
|
|
ENDMETHOD.
|
|
ENDCLASS.
|