DevOps, CI/CD and Automation

I'm new to Oracle XML and would appreciate some advice. I've been asked to generate XML documents from data stored in relational tables. The XML documents must be validated against a DTD. We will probably want to store the XML in the database.

I've seen a PL/SQL based approach as follows :
1.Mimic the structure of the DTD using SQL object types 2.Assign the relational data to the object type using PL/SQL as required
3.Use the SYS_XMLGEN package to render the required XML documents from the SQL objects

However, creating the object types seems to be quite time consuming (step 1 above) for anything other than the simplest of XML documents.

I've also seen that there is the Java based approach, namely :
1. Use the XML generator to build Java classes based on a DTD.
2. Use these classes to build the required XML

On the face of it, the Java based approach seems simpler. However, I'm not that familiar with Java.

Which is the best way to proceed ? Is the PL/SQL based approach worth pursuing or should I bite the bullet and brush up my Java ?

Is it possible to use a combination of PL/SQL and Java to populate the dtd generated java classes (step 2 of the Java approach) to reduce my learning curve ?

Thanks in advance