December 2019 - Go Coding

December 29, 2019 ABAP Programs Barry Allen

Function Imports in SAP OData

11 DATA: ls_parameter TYPE /iwbep/s_mgw_name_value_pair, lv_custid TYPE kunnr, lv_flag TYPE char1, lt_custinfo TYPE TABLE OF ztest_gw_srv, ls_custinfo TYPE ztest_gw_srv, ls_entity TYPE zcl_ztest_gw_srv_mpc=>ts_msg_return. IF iv_action_name = ‘demoFuncImport’. ” Check what action is being requested IF it_parameter IS NOT INITIAL. * Read Function import parameter value READ TABLE it_parameter INTO ls_parameter WITH KEY name = ‘CustId’. IF […]

December 29, 2019 ABAP Programs Barry Allen

Convert JSON to ABAP Internal Table

14 TYPES: BEGIN OF t_entry, access_token TYPE string, token_type TYPE string, expires_in TYPE n LENGTH 8, scope TYPE string, jti TYPE string, END OF t_entry . TYPES: t_entry_map TYPE SORTED TABLE OF t_entry WITH UNIQUE KEY access_token. DATA: m_entries TYPE t_entry. DATA: lr_instance TYPE REF TO /ui5/cl_json_parser. CREATE OBJECT lr_instance. CALL METHOD me->get_token. IF gv_token […]

December 29, 2019 ABAP Programs, Blockchain Barry Allen

Create Object History in SAP Blockchain

8 In this article we will learn how to create a block in Blockchain at SAP Cloud Platform. METHOD create_object_history. DATA: lo_http_client TYPE REF TO if_http_client. DATA: response TYPE string, lv_url TYPE string, lv_auth TYPE string. CONSTANTS : lv_initial_url TYPE string VALUE ‘<Your_Service>’. IF iv_object_id IS NOT INITIAL. *** Getting Token TYPES: BEGIN OF t_entry, […]

December 29, 2019 ABAP Programs, Blockchain Barry Allen

Get Proof history from the Blockchain Service

8 In this step we will call the blockchain service again using the token that we have stored in above step. And then we will receive the history of transactions from blockchain. METHOD get_proof_history. DATA: lo_http_client TYPE REF TO if_http_client. DATA: response TYPE string, lv_url TYPE string, lv_auth TYPE string, lv_auth2 TYPE string. CONSTANTS : […]

December 29, 2019 ABAP Programs Barry Allen

Get Token from SAP Cloud Platform Service

10 In this step we will call the service to get the token and store that token in a global variable for later use. METHOD get_token. DATA: lo_http_client TYPE REF TO if_http_client. DATA: response TYPE string, lv_url TYPE string. CONSTANTS: lv_initial_url TYPE string VALUE ‘<Blockchain Service Link>’, lv_auth TYPE string VALUE ‘Basic <your login credentials>’. […]

December 29, 2019 ABAP Programs Barry Allen

Calculate a hash in ABAP

13 In ABAP we can perform the following: calculate_hash_for_raw METHOD calculate_hash_for_raw. TRY. cl_abap_message_digest=>calculate_hash_for_raw( EXPORTING if_algorithm = ‘SHA256’ if_data = iv_data IMPORTING ef_hashstring = ev_sha256 ). CATCH cx_root. ” Eh, what’re you gonna do? ENDTRY. ENDMETHOD. calculate_hash_for_string METHOD calculate_hash_for_string. TRY. cl_abap_message_digest=>calculate_hash_for_char( EXPORTING if_algorithm = ‘SHA256’ if_data = iv_data IMPORTING ef_hashstring = ev_sha256 ). CATCH cx_root. ” […]

December 29, 2019 SAP Web Dynpro Barry Allen

Navigate between Views in Web Dynpro

6 Introduction In our previous articles we have already seen how to create a view in Web Dynpro. In Web Dynpro we can create multiple views under a component. It is also important to embed that view in the window to make it visible. In this article we will explore how to navigate between Views […]

December 29, 2019 SAP Web Dynpro Barry Allen

Data Binding in Web Dynpro

5 Introduction A Web Dynpro Application is developed using MVC (Model View Controller) Architecture. It means whatever data model is there that requires binding with the View elements (e.g. Input Field, Check box, Table, etc.). This binding can be achieved using view and controller. In this article we will explore data binding in Web Dynpro. […]

December 27, 2019 Blockchain Barry Allen

Blockchain Implementation in ABAP

10 Introduction With the introduction of Blockchain in SAP Cloud Platform, the important questions for SAP developers was its implementation in SAP ABAP. All the client information of SAP is mainly on premise based. The major amount of data is already stored in backend system and if we cannot push this data on blockchain then […]

December 27, 2019 SAP Web Dynpro Barry Allen

Components in Web Dynpro

7 Introduction Web Dynpro is a SAP based technology which is used to create web-based Application. To develop a web based application we need multiple components and interfaces. In this article we will explain Components in Web Dynpro in detail. Components in Web Dynpro A Web Dynpro component is a reusable entity. The creation of […]

Month: December 2019