Transformation XML Conversion

[XML] about XML (part 3)

In the first two articles ([XML] about XML (Part 1), [XML] about XML
(Part 2). We use the XML proxy class to read and write XML. SAP provides the call transformation <ID> method, which is the most commonly used method in our daily work.

After call transformation is used, our ABAPProgramIt is no longer as simple and convenient to process XML nodes as previously. But at the same time, we need to develop transformation in advance.

The call transformation method is complex and contains many non-ABAP contents. Here, we only record the content used in our work to prevent forgetting.

Use call transformation to operate XML

Tcode:Strans

There are two types of Transformation: simple transformation and XSLT.

Simple transformation.

Program:

Report ztest_transofrmation_1. Data: Ls_lfa1 type lfa1, Lt_lfa1 type table of lfa1, Lv_xml type string, Lv_string type string, W_len type I, It_xml type table of string. Start-of-selection. Select * From lfa1 into Table lt_lfa1 Up to 20 rows. * Call XML Call transformation ztest_01 Source vendor = lt_lfa1 Result XML lv_xml. Write: lv_xml.

TransformationZtest_01Is:

Result:

The XML file is generated correctly.

In addition, transformation can be used in two directions, namely, deserialization (parsing XML) and serialization (generating XML ). Test as follows:

*&-----------------------* * & Report ztest_xml_attribute *& *&-----------------------* * & Parse XML Attribute *& *&-----------------------* Report ztest_xml_attribute. Data: W_attr1 type string, W_attr2 type string. Data: W_xml type string. * ------ Deserialization ------- * From XML W_xml = '<X attr1 = "text1" attr2 = "text2"/> '. * Deserialization of XML Call transformation ztest_02 Source XML w_xml Result root1 = w_attr1 Root2 = w_attr2. Write:/'attribute 1: ', 20 w_attr1, /'Attribute 2: ', 20 w_attr2. * ------ Serialization ------- Skip 2. Clear: w_xml, w_attr1, w_attr2. "Form data W_attr1 = '[2nd] text1 ′. W_attr2 = '[2nd] text2 ′. "Serialization Call transformation ztest_02 Source root1 = w_attr1 Root2 = w_attr2 Result XML w_xml. Write: w_xml.

Here, Transformation:

Result:

UsageXSLTType, here is a simple example, which is also applied in our actual work:

Write XML: Call transformation ID Source XML iv_xml_stream Result sap_business_all_epa_proc = lt_proc_state_epa. Read XML: Call transformation ID Source sap_business_all_epa_proc = lt_proc_state_epa Result XML ev_xml_stream.

XML format:

Note: For transformation, only a few simple cases used in your work are recorded here. Transformation is a complex and rich point, which requires more in-depth study. Link:

SAP help: http://help.sap.com/abapdocu_70/en/ABAPCALL_TRANSFORMATION.htm

A foreigner's Blog contains equivalent XML content: http://www.sdn.sap.com/irj/scn/weblogs? Blog =/pub/u/35460