Simple XSLT transformation into ABAP Object - object

Question

I'm again stuck with a transformation from XML into ABAP. This time, I want to put the XML data directly into an ABAP Object.
My XML looks like this:
<qualityStatus>
<address>0</address>
<bounceRisk>0</bounceRisk>
<checked>1</checked>
<domain>1</domain>
<domainScores>
<domainScore>
<domain>gmx.de</domain>
<score>0.8333333134651184</score>
</domainScore>
<domainScore>
<domain>ggs.de</domain>
<score>0.6666666269302368</score>
</domainScore>
<domainScore>
<domain>xyz.de</domain>
<score>0.6666666269302368</score>
</domainScore>
</domainScores>
<extSyntax>1</extSyntax>
<mailserver>1</mailserver>
<mailserverDiagnosis>1</mailserverDiagnosis>
<probability>1</probability>
<syntax>1</syntax>
</qualityStatus>
Edit: I changed back to a XSLT transformation, shortened to one attribute it looks like this:
<xsl:transform xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:sap="http://www.sap.com/sapxsl" version="1.0">
<xsl:output encoding="iso-8859-1" indent="yes" method="xml" version="1.0"/>
<xsl:strip-space elements="*"/>
<xsl:template match="/qualityStatus">
<asx:abap version="1.0" xmlns:asx="http://www.sap.com/abapxml">
<asx:values>
<ROOT href="#o26"/>
</asx:values>
<asx:heap xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:abap="http://www.sap.com/abapxml/types/built-in"
xmlns:cls="http://www.sap.com/abapxml/classes/global"
xmlns:dic="http://www.sap.com/abapxml/types/dictionary">
<cls:ZCL_ADDRESS_QUALITY id="o26" >
<local.ZCL_ADDRESS_QUALITY>
<W_ADDRESS>
<xsl:value-of select="address"/>
</W_ADDRESS>
<!--More attributes here-->
</local.ZCL_ADDRESS_QUALITY>
</cls:ZCL_ADDRESS_QUALITY>
</asx:heap>
</asx:abap>
</xsl:template>
My object attributes are all public right now, because I thought this could be the problem. However, setter and getter do exist. Yes, my class does implement the interface if_serializable_object.
DATA:
w_address TYPE char1,
w_bouncerisk TYPE char1,
w_checked TYPE char1,
w_decoded TYPE stringval,
w_domain TYPE char1,
w_domainscores TYPE z_domainscore_t, "Table type for name + score
w_extsyntax TYPE char1,
w_mailserver TYPE char1,
w_mailserverdiagnosis TYPE char1,
w_probability TYPE char1,
w_syntax TYPE char1,
w_syntaxwarnings TYPE z_syntaxwarnings_t. "Table of syntaxwarnings
Finally, I call my transformation with an instance of my class:
CALL TRANSFORMATION zst_addressquality
SOURCE XML lw_xml
RESULT result = lo_addressquality.
Now, when debugging through the transformation code, it successfully notices all fields of the given lw_xml and appears to write them into the object lo_addressquality. But the object attributes stay empty afterwards.
When testing the serialization, I can access result which contains my object, but result-w_address (and all others) are empty.
While testing, I created a structure with completely identical names and types. With it, it worked as intended.
What am I missing? Is there anything else I have to watch out for when working with transformation into ABAP Objects?
_Edit: After changing to the XSLT, I can get until W_ADDRESS before my code throws an CX_XSLT_ABAP_CALL_ERROR. So, I'm still not able to access the object'S attributes properly. :|_

Answer 1

Objects can be serialized/deserialized only with an XSL transformation. It's not possible to do it with a simple transformation, dixit ABAP documentation:
ST programs are restricted to the transformation of elementary and structured ABAP data, along with internal tables. The transformation of reference variables and referenced objects is not currently supported.
The XSL transformation must convert the XML into ASXML, which in short corresponds to a structure like this:
<?xml ...?>
<asx:abap xmlns:asx="http://www.sap.com/abapxml" version="1.0">
<asx:values>
...
</asx:values>
<asx:heap>
...
</asx:heap>
</asx:abap>
The easiest way to understand what the ASXML should look like is to serialize your object reference using the identity transformation (it's an XSL transformation), and then adapt your transformation to produce the same kind of asXML:
CALL TRANSFORMATION id SOURCE anyRootName = yourObjectReference RESULT XML asXMLutf8xstring.
Example:
REPORT.
CLASS serialization_demo DEFINITION.
PUBLIC SECTION.
INTERFACES if_serializable_object.
DATA attribute TYPE i.
ENDCLASS.
START-OF-SELECTION.
DATA obj_ref TYPE REF TO serialization_demo.
DATA xstring TYPE xstring.
CREATE OBJECT obj_ref.
obj_ref->attribute = 5.
CALL TRANSFORMATION id " serialize
SOURCE root = obj_ref
RESULT XML xstring.
CLEAR obj_ref.
CALL TRANSFORMATION id " deserialize
SOURCE XML xstring
RESULT root = obj_ref.
ASXML (in the xstring variable):
<?xml version="1.0" encoding="utf-8"?>
<asx:abap version="1.0" xmlns:asx="http://www.sap.com/abapxml">
<asx:values>
<ROOT href="#o3"/>
</asx:values>
<asx:heap xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:abap="http://www.sap.com/abapxml/types/built-in" xmlns:cls="http://www.sap.com/abapxml/classes/global" xmlns:dic="http://www.sap.com/abapxml/types/dictionary">
<prg:SERIALIZATION_DEMO id="o3" xmlns:prg="http://www.sap.com/abapxml/classes/program/ZZSRO_TEST16I">
<local.SERIALIZATION_DEMO>
<ATTRIBUTE>5</ATTRIBUTE>
</local.SERIALIZATION_DEMO>
</prg:SERIALIZATION_DEMO>
</asx:heap>
</asx:abap>