Complex XML using Spring Batch; StaxEventItemWriter ; Jaxb2Marshaller

Question

I need to write a slightly complex XML using Spring Batch. Can anyone please help me with the appropriate Spring configuration?

Below is the Output the process requi

Answer 1

The solution to this problem is to implement Header/Footer Callback classes provided by Spring (As Michael Minella suggested in the comments below.), StaxWriterCallback class in my case. Below is How I've implemented it.

    
    
    
    
    
    
    
 




  
     
     
       org.test.model.xml.User
    
    
    

And below are the Footer/Header callback classes implementation

 public class UserXMLHeaderCallBack implements StaxWriterCallback{  
      @Override
        public void write(XMLEventWriter writer) throws IOException {
            try{
            XMLEventFactory eventFactory = XMLEventFactory.newInstance();

            Attribute id = eventFactory.createAttribute("ID", "someId");
            Attribute name = eventFactory.createAttribute("NAME", "someName");
            List attributeList = Arrays.asList(id, name);
            List nsList = Arrays.asList();

            XMLEvent event = eventFactory.createStartElement("", "", "USERLIST",attributeList.iterator(), nsList.iterator());
            writer.add(event);

            }catch(XMLStreamException e){
                System.err.println("Something went nuts!!!");
            }
        }

    }

Footer class

 public class UserXMLFooterCallBack implements StaxWriterCallback{

    @Override
    public void write(XMLEventWriter writer) throws IOException {
        try{
            XMLEventFactory eventFactory = XMLEventFactory.newInstance();

            XMLEvent event = eventFactory.createEndElement("", "", "USERLIST");
            writer.add(event);
        }catch(XMLStreamException e){
            System.err.println("Something went nuts!!!");
        }
    }

}

And I got the desired Output!