topic Re: Simple transformation in Application Development and Automation Discussions

Simple transformation

Former Member — Tue, 06 Sep 2005 14:39:49 GMT

Hi all,

When I use a simple transformation (with CALL TRANSFORMATION) to create xml-string from ABAP structure I get an xml-string which starts with <?xml version="1.0" encoding="utf-16"?>.

I wonder if it is possible to get the encoding in UTF-8?

The result of the transformation is saved in a table with string type variable.

Do I have to add something to my transformation source?

Thanks in advance,

Fred.

Re: Simple transformation

RichHeilman — Tue, 06 Sep 2005 14:48:50 GMT

Maybe this will help you....... In the ABAP code, it is setting the value UTF-8.

Regards,

Rich Heilman

Re: Simple transformation

thomas_jung — Tue, 06 Sep 2005 14:56:58 GMT

I don't think the sample provided will work in this case. He is setting the HTTP Response to UTF-8, but not generating the XML itself that way.

In order to generate XML thorugh a transforamtion in UTF-8 you have to set the encoding on the output stream factory. I assume you are getting UTF-16 by default because you have a Unicode system.

constants:
* encoding for download of XML files
    encoding     type string value 'UTF-8'.

  data: resstream type ref to if_ixml_ostream,
         ressize type i value 0.

****Create an instance of the Ixml Processor
  g_ixml = cl_ixml=>create( ).

****Create the Stream Factory
  g_stream_factory = g_ixml->create_stream_factory( ).

****Create an Endcoding and Byte Order
  g_encoding = g_ixml->create_encoding( character_set = encoding
    byte_order = 0 ).

****Create the output stream with a pointer to our binary string
  resstream =
      g_stream_factory->create_ostream_xstring( r_xstring ).

****Set the Encoding into a stream
  resstream->set_encoding( encoding = g_encoding ).

****Call Transformation using the simple XSLT id_indent
  call transformation id_indent
    source     itab = <tab>
    result xml resstream.

Re: Simple transformation

Former Member — Tue, 06 Sep 2005 15:06:52 GMT

hi, I use the CALL TRANSFORMATION a little difference with yours, but it can achieve your target.


data:  g_ixml type ref to if_ixml.
data:  g_stream_factory type ref to IF_IXML_STREAM_FACTORY.
data:  resstream type ref to if_ixml_ostream.
data:  g_encoding type ref to if_ixml_encoding.

  g_ixml = cl_ixml=>create( ).
  g_stream_factory = g_ixml->CREATE_STREAM_FACTORY( ).
  g_encoding = g_ixml->create_encoding( character_set = 'utf-8'
    byte_order = 0 ).

  resstream = g_stream_factory->CREATE_OSTREAM_ITABLE( table = restab ).
  call method resstream->set_encoding
    exporting encoding = g_encoding.

  call transformation XXXX
    source  itab  =  XXXX
    result xml resstream.

Re: Simple transformation

Former Member — Wed, 07 Sep 2005 09:51:03 GMT

Thanks for the answers,

I now need to write the resstream to an xml-file on an external file server how do I use the resstream in your examples in

(for example) fm 'GUI_DOWNLOAD'.

Thanks in advance.

Fred

Re: Simple transformation

Former Member — Wed, 07 Sep 2005 09:51:36 GMT

Thanks for the answers,

but how do I use the resstream in your examples in for example fm 'GUI_DOWNLOAD' to write the resstream to an xml-file on an external file server

Thanks in advance.

Fred

Re: Simple transformation

thomas_jung — Wed, 07 Sep 2005 10:02:21 GMT

Choose the format of the RESSTEAM object that you want. You could go to the Binary String and then convert that Binary String to a Internal Table of Bytes (using function module SCMS_XSTRING_TO_BINARY) or perhaps try the CREATE_OSTREAM_ITABLE.

Either way you end up with an internal table of bytes that can be downloaded using the GUI_DOWNLOAD or CL_GUI_FRONTEND_SERVICES.