/
zcl_demo_abap_rap_ext_num_u.clas.abap
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zcl_demo_abap_rap_ext_num_u.clas.abap
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***********************************************************************
*
* RAP BO consumer for a RAP demo scenario:
* ABAP EML in use: Unmanaged RAP BO with external numbering
*
* -------------------------- PURPOSE ----------------------------------
* - This class is the RAP BO consumer for a RAP demo scenario that
* demonstrates various RAP BO standard operations and non-standard
* operations using ABAP EML in the context of an unmanaged RAP business
* object with RAP external numbering.
* - Topics covered: RAP BO operations like create, update, delete,
* executing actions, instance and global feature control, instance
* authorization, create-by-association (parent to child), read,
* read-by-association (parent to child), read (child entity),
* read-by-association (child to parent)
* - Underlying data model: Consists of a root entity and one child entity.
* The BDEF defines the behavior for these two entities which are connected
* via a CDS composition relation. The definitions in the BDEF determine
* which methods must be implemented in the ABAP behavior pool (ABP).
* - ABP for this scenario: zbp_demo_abap_rap_ro_u
*
* ----------------------- GETTING STARTED -----------------------------
* - Open the class with the ABAP development tools for Eclipse (ADT).
* - Choose F9 to run the class.
* - Check the console output.
* - To understand the context and the ABAP syntax used, check the notes
* included in the class as comments or refer to the respective topic
* in the ABAP Keyword Documentation.
* - Due to the amount of output in the console, the examples include
* numbers (e. g. 1) ..., 2) ..., 3) ...) for the individual example
* sections. Plus, the variable name is displayed in most cases. Hence,
* to easier and faster find the relevant output in the console, just
* search in the console for the number/variable name (CTRL+F in the
* console) or use the debugger.
*
* ----------------------------- NOTE -----------------------------------
* This simplified example is not a real life scenario and rather
* focuses on the technical side by giving an idea how the communication
* and data exchange between a RAP BO consumer, which is a class
* in this case, and RAP BO provider can work. Additionally, it shows
* how the methods for non-standard RAP BO operations might be
* self-implemented in an ABP. The example is intentionally kept
* short and simple and focuses on specific RAP aspects. For this reason,
* the example might not fully meet the requirements of the RAP BO contract.
*
* For demonstration purposes, some of the operations are
* impacted by feature controls and instance authorization as specified
* in the BDEF.
*
* The code presented in this class is intended only to support the ABAP
* cheat sheets. It is not intended for direct use in a production system
* environment. The code examples in the ABAP cheat sheets are primarily
* intended to provide a better explanation and visualization of the
* syntax and semantics of ABAP statements, not to solve concrete
* programming tasks. For production application programs, you should
* always work out your own solution for each individual case. There is
* no guarantee for the correctness or completeness of the code.
* Furthermore, there is no legal responsibility or liability for any
* errors or their consequences that may occur when using the the example
* code.
*
***********************************************************************
"! <p class="shorttext synchronized">ABAP cheat sheet: ABAP EML in a RAP scenario (unmanaged BO)</p>
"! Example to demonstrate ABAP EML in the context of a RAP demo scenario (unmanaged RAP BO with external numbering).
"! The class represents a RAP BO consumer.<br>Choose F9 in ADT to run the class.
CLASS zcl_demo_abap_rap_ext_num_u DEFINITION
PUBLIC
FINAL
CREATE PUBLIC .
PUBLIC SECTION.
INTERFACES: if_oo_adt_classrun.
CLASS-METHODS:
class_constructor.
protected section.
PRIVATE SECTION.
CLASS-DATA:
failed TYPE RESPONSE FOR FAILED zdemo_abap_rap_ro_u,
reported TYPE RESPONSE FOR REPORTED zdemo_abap_rap_ro_u,
mapped TYPE RESPONSE FOR MAPPED zdemo_abap_rap_ro_u,
op TYPE string.
CLASS-METHODS:
initialize_dbtabs,
"If there are entries in the response parameters following EML
"requests, they should be processed for displaying purposes.
extract_from_reported RETURNING VALUE(messages) TYPE string_table,
extract_from_failed RETURNING VALUE(errors) TYPE string_table,
fill_db_tab.
ENDCLASS.
CLASS ZCL_DEMO_ABAP_RAP_EXT_NUM_U IMPLEMENTATION.
METHOD class_constructor.
initialize_dbtabs( ).
ENDMETHOD.
METHOD extract_from_failed.
CLEAR errors.
LOOP AT failed-root ASSIGNING FIELD-SYMBOL(<err>).
CASE if_abap_behv=>mk-on.
WHEN <err>-%op-%create.
op = `create operation`.
WHEN <err>-%op-%update.
op = `update operation`.
WHEN <err>-%op-%delete.
op = `delete operation`.
WHEN <err>-%op-%assoc-_child.
op = `operation involving the child entity`.
WHEN <err>-%op-%action-multiply_by_2.
op = `executing action multiply_by_2`.
WHEN <err>-%op-%action-multiply_by_3.
op = `executing action multiply_by_3`.
WHEN <err>-%op-%action-set_z.
op = `executing action set_z`.
WHEN OTHERS. op = `operation`.
ENDCASE.
APPEND `Error for instance with ` &&
COND #( WHEN <err>-%cid IS NOT INITIAL THEN `%cid = `
&& <err>-%cid
ELSE `key = ` && <err>-key_field ) &&
`: Fail cause ` && <err>-%fail-cause && ` for ` && op
&& `.` TO errors.
ENDLOOP.
IF failed-child IS NOT INITIAL.
LOOP AT failed-child ASSIGNING FIELD-SYMBOL(<err_ch>).
APPEND `Error for child instance with ` &&
COND #( WHEN <err_ch>-%cid IS NOT INITIAL THEN `%cid = `
&& <err_ch>-%cid
ELSE `key_field = ` && <err_ch>-key_field &&
` and key_ch = ` && <err_ch>-key_ch ) &&
`: Fail cause ` && <err_ch>-%fail-cause && ` for operation.`
TO errors.
ENDLOOP.
ENDIF.
ENDMETHOD.
METHOD extract_from_reported.
CLEAR messages.
LOOP AT reported-root ASSIGNING FIELD-SYMBOL(<rep>).
IF <rep>-%global = if_abap_behv=>mk-on.
APPEND <rep>-%msg->m_severity && ` ` &&
<rep>-%msg->if_t100_dyn_msg~msgv1 TO messages.
ELSE.
APPEND `Message for instance with ` &&
COND #( WHEN <rep>-%cid IS NOT INITIAL
THEN `%cid = ` && <rep>-%cid
ELSE `key = ` && <rep>-key_field ) &&
`: ` && <rep>-%msg->m_severity && ` ` &&
<rep>-%msg->if_t100_dyn_msg~msgv1 TO messages.
ENDIF.
ENDLOOP.
IF reported-child IS NOT INITIAL.
LOOP AT reported-child ASSIGNING FIELD-SYMBOL(<rep_ch>).
APPEND `Message for child instance with key_field = ` &&
<rep_ch>-key_field && ` and key_ch = `
&& <rep_ch>-key_ch && `: ` && <rep_ch>-%msg->m_severity &&
` ` && <rep_ch>-%msg->if_t100_dyn_msg~msgv1 TO messages.
ENDLOOP.
ENDIF.
ENDMETHOD.
METHOD fill_db_tab.
MODIFY zdemo_abap_rapt1 FROM TABLE @( VALUE #(
( key_field = 4
field1 = 'fff'
field2 = 'ggg'
field3 = 40
field4 = 41 ) ) ).
ENDMETHOD.
METHOD if_oo_adt_classrun~main.
out->write( |ABAP Cheat Sheet Example: RAP BO Operations Using an Unmanaged RAP BO (External Numbering)\n\n| ).
**********************************************************************
*
* Create operation
*
**********************************************************************
out->write( |1) Create Operation\n\n| ).
"Adding an entry to the database table to provoke an error for the
"EML create request.
fill_db_tab( ).
**********************************************************************
* Notes:
* - field4 is purposely not included in the FIELDS list
* - Effect:
* - %control value for field4 is set to if_abap_behv=>mk-off
* - Although the derived type (created inline here) includes a
* value assignment for field4 in an instance, the field value is
* not saved. The initial value is used.
* - The instance with key_field = 4 will not be saved since an entry
* already exists in the database table with the same key.
* - Response parameters are specified to receive information.
* - A COMMIT ENTITIES statement triggers the saving of the instances.
**********************************************************************
MODIFY ENTITIES OF zdemo_abap_rap_ro_u
ENTITY root
CREATE FIELDS ( key_field field1 field2 field3 )
WITH VALUE #( ( %cid = 'cid1'
key_field = 1
field1 = 'aaa'
field2 = 'bbb'
field3 = 10
field4 = 11 ) "Value not respected
( %cid = 'cid2'
key_field = 2
field1 = 'ccc'
field2 = 'ddd'
field3 = 20 )
( %cid = 'cid3'
key_field = 3
field1 = 'X'
field2 = 'eee'
field3 = 30 )
( %cid = 'cid4' "Instance to fail
key_field = 4
field1 = 'error'
field2 = 'error'
field3 = 99 ) )
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 @DATA(tab_root).
out->write( data = tab_root name = `tab_root` ).
out->write( |\n| ).
"Displaying response information
IF mapped-root IS NOT INITIAL.
out->write( `Entries in MAPPED response parameter ` &&
`(root entity)` ).
out->write( |\n| ).
out->write( data = mapped-root name = `mapped-root` ).
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.
**********************************************************************
*
* Update operations
*
**********************************************************************
out->write( zcl_demo_abap_aux=>heading( `2) Update Operation` ) ).
**********************************************************************
* Notes:
* - The EML request includes a create and an update request. The
* create request is included to have a %cid to refer to for demo
* purposes. This instance has not yet been persisted.
* - The EML statement for the create operation includes the ABAP
* FROM ... (instead of FIELDS ( ... ) WITH ...) for demo purposes.
* Here, the %control values must be set explicitly.
* - The update request purposely excludes field2 so as not to update
* the value of this particular field.
**********************************************************************
MODIFY ENTITIES OF zdemo_abap_rap_ro_u
ENTITY root
CREATE FROM VALUE #(
%control-key_field = if_abap_behv=>mk-on
%control-field1 = if_abap_behv=>mk-on
%control-field2 = if_abap_behv=>mk-on
%control-field3 = if_abap_behv=>mk-on
%control-field4 = if_abap_behv=>mk-on
( %cid = 'cid5'
key_field = 5
field1 = 'hhh'
field2 = 'iii'
field3 = 50
field4 = 51 ) )
UPDATE FIELDS ( field1 field3 field4 )
WITH VALUE #(
"Update via cid_ref
( %cid_ref = 'cid5'
field1 = 'up_jjj'
field2 = 'up_kkk' "Value not respected
field3 = 500
field4 = 501 )
"Updates via key
( key_field = 1
field1 = 'up_lll'
field3 = 100
field4 = 101 )
( key_field = 2
field1 = 'up_mmm'
field3 = 200
field4 = 201 )
( key_field = 99 "Instance to fail
field1 = 'error'
field3 = 99
field4 = 99 ) )
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.
out->write( data = tab_root name = `tab_root` ).
out->write( |\n| ).
"Displaying response information
IF mapped-root IS NOT INITIAL.
out->write( `Entries in MAPPED response parameter ` &&
`(root entity)` ).
out->write( |\n| ).
out->write( data = mapped-root name = `mapped-root` ).
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.
**********************************************************************
*
* Delete operation
*
**********************************************************************
out->write( zcl_demo_abap_aux=>heading( `3) Delete Operation` ) ).
**********************************************************************
* Notes:
* - The EML request includes a create and an delete request. The
* create request is included to have a %cid to refer to for demo
* purposes. This instance has not yet been persisted.
* - EML statements for delete operations can only be used with the
* ABAP word FROM ....
* - Note: Instance authorization is defined in the BDEF. In this
* example, the corresponding handler method is implemented in a way
* that disables the deletion of instances if a field has a certain
* value. If field1 has the value 'X', a deletion is disabled.
**********************************************************************
MODIFY ENTITIES OF zdemo_abap_rap_ro_u
ENTITY root
CREATE FIELDS ( key_field field1 field2 field3 field4 )
WITH VALUE #(
( %cid = 'cid_del'
key_field = 6
field1 = 'a'
field2 = 'b'
field3 = 60
field4 = 61 ) )
DELETE FROM VALUE #(
"Deletion via %cid_ref
( %cid_ref = 'cid_del' )
"Deletions via key
( key_field = 4 )
( key_field = 5 )
"Instances to fail
( key_field = 3 ) "Deletion disabled
( key_field = 100 ) ) "Key not available
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.
out->write( data = tab_root name = `tab_root` ).
out->write( |\n| ).
"Displaying response information
IF mapped-root IS NOT INITIAL.
out->write( `Entries in MAPPED response parameter ` &&
`(root entity)` ).
out->write( |\n| ).
out->write( data = mapped-root name = `mapped-root` ).
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.
**********************************************************************
*
* Action multiply_by_2
*
**********************************************************************
out->write( zcl_demo_abap_aux=>heading( `4) Executing Action mutliply_by_2` ) ).
**********************************************************************
* Notes:
* - The EML request includes a create request and a request to execute
* an action. The create request is included to have a %cid to refer
* to for demo purposes. This instance has not yet been persisted.
* - EML statements for executing actions can only be used with the
* ABAP word FROM ....
* - As the name implies, the action multiplies field
* values (field3 and field4) by 2 for requested instances.
**********************************************************************
MODIFY ENTITIES OF zdemo_abap_rap_ro_u
ENTITY root
CREATE FIELDS ( key_field field1 field2 field3 field4 )
WITH VALUE #(
( %cid = 'cid_x2'
key_field = 7
field1 = 'nnn'
field2 = 'ooo'
field3 = 70
field4 = 71 ) )
EXECUTE multiply_by_2 FROM VALUE #(
"Executing action via %cid_ref
( %cid_ref = 'cid_x2' )
"Executing action via key
( key_field = 1 )
( key_field = 2 )
( key_field = 1234 ) ) "Instance to fail
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.
out->write( data = tab_root name = `tab_root` ).
out->write( |\n| ).
"Displaying response information
IF mapped-root IS NOT INITIAL.
out->write( `Entries in MAPPED response parameter ` &&
`(root entity)` ).
out->write( |\n| ).
out->write( data = mapped-root name = `mapped-root` ).
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.
**********************************************************************
*
* Action multiply_by_3
*
**********************************************************************
out->write( zcl_demo_abap_aux=>heading( `5) Executing Action mutliply_by_3` ) ).
**********************************************************************
* Notes:
* - The EML request includes a create request and a request to execute
* an action. The create request is included to have a %cid to refer
* to for demo purposes. This instance has not yet been persisted.
* - As the name implies, the action multiplies field
* values (field3 and field4) by 3 for requested instances.
* - Note: In the BDEF of this example, this action is defined with
* instance feature control. Here, the action execution is disabled
* if both integer values are 0.
**********************************************************************
MODIFY ENTITIES OF zdemo_abap_rap_ro_u
ENTITY root
CREATE FIELDS ( key_field field1 field2 field3 field4 )
WITH VALUE #(
( %cid = 'cid_x3'
key_field = 8
field1 = 'ppp'
field2 = 'qqq'
field3 = 80
field4 = 81 ) )
EXECUTE multiply_by_3 FROM VALUE #(
"Executing action via %cid_ref
( %cid_ref = 'cid_x3' )
"Executing action via key
( key_field = 1 )
( key_field = 2 )
"Instances to fail
( key_field = 3 ) "Action execution disabled
( key_field = 1234 ) ) "Key not available
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.
out->write( data = tab_root name = `tab_root` ).
out->write( |\n| ).
"Displaying response information
IF mapped-root IS NOT INITIAL.
out->write( `Entries in MAPPED response parameter ` &&
`(root entity)` ).
out->write( |\n| ).
out->write( data = mapped-root name = `mapped-root` ).
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.
**********************************************************************
*
* Action set_z
*
**********************************************************************
out->write( zcl_demo_abap_aux=>heading( `6) Executing ACTION set_z` ) ).
**********************************************************************
* Notes:
* - The EML request includes a create request and a request to execute
* an action. The create request is included to have a %cid to refer
* to for demo purposes. This instance has not yet been persisted.
* - As the name implies, the action sets the value 'Z' for a
* particular field (field2) for requested instances.
* - Note: In the BDEF of this example, this action is defined with
* global feature control. Here, the action execution is disabled
* based on a certain time frame in which you run this example. You
* might want to change the time frame values in the ABP to check the
* effect.
**********************************************************************
MODIFY ENTITIES OF zdemo_abap_rap_ro_u
ENTITY root
CREATE FIELDS ( key_field field1 field2 field3 field4 )
WITH VALUE #(
( %cid = 'cid_setz'
key_field = 9
field1 = 'rrr'
field2 = 'sss'
field3 = 90
field4 = 91 ) )
EXECUTE set_z FROM VALUE #(
"Executing action via %cid_ref
( %cid_ref = 'cid_setz' )
"Executing action via key
( key_field = 2 ) )
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.
out->write( data = tab_root name = `tab_root` ).
out->write( |\n| ).
"Displaying response information
IF mapped-root IS NOT INITIAL.
out->write( `Entries in MAPPED response parameter ` &&
`(root entity)` ).
out->write( |\n| ).
out->write( data = mapped-root name = `mapped-root` ).
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.
**********************************************************************
*
* Create-by-Association Operation (from Root to Child Entity)
*
**********************************************************************
out->write( zcl_demo_abap_aux=>heading( `7) Create-by-Association Operation (from Root to Child Entity)` ) ).
**********************************************************************
* Notes:
* - The EML request includes a create and create-by-association
* request, i. e. a "deep create". An instance is created for the
* root entity and, in the same request and based on this root
* instance, instances are created for the child entity, too.
**********************************************************************
MODIFY ENTITIES OF zdemo_abap_rap_ro_u
ENTITY root
CREATE FIELDS ( key_field field1 field2 field3 field4 )
WITH VALUE #(
( %cid = 'cid_cba'
key_field = 10
field1 = 'ttt'
field2 = 'uuu'
field3 = 100
field4 = 101 ) )
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 = 11
field_ch1 = 'aaa_ch'
field_ch2 = 110 )
( %cid = 'cid_ch2'
key_ch = 12
field_ch1 = 'bbb_ch'
field_ch2 = 120 ) ) )
"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.
**********************************************************************
*
* Read operation
*
**********************************************************************
out->write( zcl_demo_abap_aux=>heading( `8) 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_u
ENTITY root
ALL FIELDS WITH VALUE #(
( key_field = 1 )
( key_field = 2 )
( key_field = 5 ) ) "Instance to fail
RESULT DATA(result)
FAILED failed
REPORTED reported.
"Displaying the read result and response information
out->write( data = result name = `result` ).
out->write( |\n| ).
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( `9) 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_u
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` ).
"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( `10) Read-by-Association Operation (from Parent to Child)` ) ).
**********************************************************************
* Notes:
* - The EML request includes a read-by-association request from the
* parent to the child entity.
* - 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_u
ENTITY root
BY \_child
ALL FIELDS WITH VALUE #(
( key_field = 2 )
( key_field = 10 )
( key_field = 111 ) ) "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( `11) 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_u
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| ).