Processing xml with XSLT transformation in ABAPXML string in
ABAP can be directly converted to internal table or vice-versa
using commandCALL TRANSFORMATION. Before you use the command you
need to define XSLT transformation. XSLT transformation defines
structure of XML data. CALL TRANSFORMATION then use this XSLT to
process the xml and convert it to ABAP variable. Below sample code
which consumes a Web service and process result XML string using
CALL TRANSFORMATION to convert it into ABAP variables/internal
table.
Before we continue with ABAP part of it worth looking at
webservice. Thiswebservice GetDirectionprovides driving direction
from one address to another based on parameter 'distanceUnit' and
'expresswayEnabled' (avoid motorway).
Below is the screen shot of xml result, returned by webservice,
which will be processed using CALL TRANFORMATION. Click onthis
linkto see the XML result.
In short data is organized in tags and . Tag repeats for each
driving instruction so for obvious reasons data in tag will result
in internal table. XSLT file will have more or less same structure
as below.?123456
XXXXXXXXXX
To create XSLT file open transaction SE80, hit 'Edit Object'
under 'More' tab enter name next to 'Transformation' and press
'New' button.
Enter description and choose 'Simple Transformation' press
Ok.
Below is screen shot thats shows how the final XSLT
transformation looks like for above XML string. Below three lines
defines the reference ABAP variables where the data will be
transfered?123
The structure of XML data is defined between tags?12
Note howtag is defined
?123456789101112131415161718192021222324252627282930313233
And here is the sample code
...?123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112REPORT
zpw_websrvice_direction.*&---------------------------------------------------------------------**&
Types and
Data*&---------------------------------------------------------------------*DATA:
http_client TYPE REF TO if_http_client ,http_url TYPE string
,p_content TYPE string .DATA : v_unit TYPE string ,v_motor TYPE
string
.*&---------------------------------------------------------------------**&
Selection
Screen*&---------------------------------------------------------------------*SELECTION-SCREEN
BEGIN OF BLOCK m1 WITH FRAME .PARAMETERS : p_strt TYPE char7 ,p_end
TYPE char7 .SELECTION-SCREEN SKIP 1 .PARAMETERS : p_mile TYPE
char01 RADIOBUTTON GROUP r1 ,p_km TYPE char01 RADIOBUTTON GROUP r1
.SELECTION-SCREEN SKIP 1 .PARAMETERS : p_motor TYPE char01 AS
CHECKBOX DEFAULT 'X' .SELECTION-SCREEN END OF BLOCK
m1.*&---------------------------------------------------------------------**&
Start of
Selection*&---------------------------------------------------------------------*START-OF-SELECTION
.* Build the url string based on inputIF p_mile = 'X' .v_unit =
'mile' .ELSE.v_unit = 'km' .ENDIF.IF p_motor = 'X' .v_motor =
'true' .ELSE.v_motor = 'false' .ENDIF.CONCATENATE
'http://www.ecubicle.net/driving.asmx''/GetDirections?fromAddress='
p_strt'&toAddress=' p_end'&distanceUnit='
v_unit'&expresswayEnabled=' v_motorINTO http_url .* Creation of
new IF_HTTP_Client objectCALL METHOD
cl_http_client=>create_by_urlEXPORTINGurl =
http_urlIMPORTINGclient = http_clientEXCEPTIONSargument_not_found =
1plugin_not_active = 2internal_error = 3OTHERS =
4.http_client->request->set_header_field( name =
'~request_method'value = 'GET' ).* Send the
requesthttp_client->send( ).* Reterive the resultCALL METHOD
http_client->receiveEXCEPTIONShttp_communication_failure =
1http_invalid_state = 2http_processing_failed = 3OTHERS =
4.p_content = http_client->response->get_cdata( ).REPLACE ALL
OCCURRENCES OF '' IN p_content WITH '>' .TYPES : BEGIN OF
ty_route ,id TYPE string ,distance TYPE string ,final TYPE string
,routetxt TYPE string ,END OF ty_route .DATA : l_route TYPE TABLE
OF ty_route ,l_totdistance TYPE string ,l_time TYPE string .TRY
.CALL TRANSFORMATION zpw_directSOURCE XML p_contentRESULT t_route =
l_routetotdistance = l_totdistancetime = l_time .CATCH
cx_st_error.ENDTRY.DATA : ls_route TYPE ty_route .LOOP AT l_route
INTO ls_route .IF ls_route-final 'true' .WRITE : /1 ls_route-id ,10
ls_route-distance ,20 ls_route-routetxt .ENDIF.ENDLOOP.WRITE : /
'Total Distance : ' , l_totdistance ,/ 'Time : ' , l_time .
