topic Re: ABAP cl_http_client REST - PATCH method in Application Development and Automation Discussions

ABAP cl_http_client REST - PATCH method

Former Member — Thu, 19 Apr 2018 06:28:20 GMT

Hello community,

hope someone could help me.

I need to communicate with an external API. I use the class cl_http_client for method POST, DELETE, GET. Now I need to change customer data with method PATCH. PUT will be not supported.

CALL METHOD cl_http_client=>create_by_url
EXPORTING
url = lv_url
IMPORTING
client = lo_http
EXCEPTIONS
argument_not_found = 1
plugin_not_active = 2
internal_error = 3
OTHERS = 4.

CALL METHOD lo_http->request->set_version(
if_http_request=>co_protocol_version_1_0 ).

CALL METHOD lo_http->request->if_http_entity~set_content_type
EXPORTING
content_type = 'application/json; charset=utf-8'.

CALL METHOD lo_http->request->set_header_field
EXPORTING
name = 'authorization'
value = '4711'.

lv_length = strlen( lv_body ).
CALL METHOD lo_http->request->set_cdata
EXPORTING
data = lv_body
offset = 0
length = lv_length.

CALL METHOD lo_http->request->set_method( 'PATCH' ).

lo_http->send(
EXCEPTIONS
http_communication_failure = 1
http_invalid_state = 2 ).

lo_http->receive(
EXCEPTIONS
http_communication_failure = 1
http_invalid_state = 2
http_processing_failed = 3 ).

lv_response = lo_http->response->get_cdata( ).

The main question is, did someone use the method PATCH for the class cl_http_client?

Or is there another solution, way?

Re: ABAP cl_http_client REST - PATCH method

SimoneMilesi — Thu, 19 Apr 2018 07:05:55 GMT

And the question/issue is...?

Re: ABAP cl_http_client REST - PATCH method

Former Member — Thu, 19 Apr 2018 08:08:00 GMT

Oh sorry, it did not work!

For example the method POST

CALL METHOD lo_http->request->set_method(CO_REQUEST_METHOD_POST).

The main question is, did someone use the method PATCH for the class cl_http_client?

Re: ABAP cl_http_client REST - PATCH method

Former Member — Fri, 20 Apr 2018 07:50:37 GMT

SOLUTION!!!

cl_http_client=>create_by_destination(
EXPORTING
destination = iv_dest " Logical destination (specified in function call)
IMPORTING
client = lo_http_client " HTTP Client Abstraction
EXCEPTIONS
argument_not_found = 1
destination_not_found = 2
destination_no_authority = 3
plugin_not_active = 4
internal_error = 5
OTHERS = 6
).

CREATE OBJECT lo_rest_client
EXPORTING
io_http_client = lo_http_client.

lo_http_client->request->set_version( if_http_request=>co_protocol_version_1_0 ).

CONDENSE lv_url NO-GAPS.

cl_http_utility=>set_request_uri(
EXPORTING
request = lo_http_client->request " HTTP Framework (iHTTP) HTTP Request
uri = lv_url " URI String (in the Form of /path?query-string)
).

* Set Payload or body ( JSON or XML)
lo_request = lo_rest_client->if_rest_client~create_request_entity( ).
lo_request->set_content_type( iv_media_type = if_rest_media_type=>gc_appl_json ).
lo_request->set_header_field( iv_name = `authorization` iv_value = lv_token ).
lo_request->set_string_data( lv_body ).

* Enhancement to Class CL_REST_HTTP_CLIENT - Method PATCH

lo_rest_client->patch( lo_request ).

* Collect response
lo_response = lo_rest_client->if_rest_client~get_response_entity( ).
lv_response = lo_response->get_string_data( )

Coding Method PATCH in Class CL_REST_HTTP_CLIENT

send_receive( iv_http_method = 'PATCH' io_entity = io_entity ).

Re: ABAP cl_http_client REST - PATCH method

Tomas_Buryanek — Fri, 20 Apr 2018 08:55:11 GMT

Nice! 🙂

That CL_REST_HTTP_CLIENT-PATCH is yours "enhancmenet method" ?

By the way, there is IF_REST_MESSAGE-GC_METHOD_PATCH constant, but it is not used like the others:

CL_REST_HTTP_CLIENT

Methods:
IF_REST_RESOURCE~POST
send_receive( iv_http_method = if_rest_message=>gc_method_post io_entity = io_entity ).

IF_REST_RESOURCE~PUT
send_receive( iv_http_method = if_rest_message=>gc_method_put io_entity = io_entity ).

... but not ~PATCH