XML shredding via XSLT in Java

Question

I need to transform large XML files that have a nested (hierarchical) structure of the form

   Flat XML
   Hierarchical XML (multiple blocks, so         


        

Answer 1

Here is a generic solution as requested:

When applied on the provided simplified (and generic) XML document:

   ...
   
      ...
      
        ...
        A
        B
        ...
      
      ...
   
   ...

the wanted, correct result is produced:

   ...
   
      ...
      
         A
      
      ...
   
   ...


   ...
   
      ...
      
         B
      
      ...
   
   ...

Now, if we change the line:

to:

and apply the transformation to the Employee XML document:

    
123 A Street
    28
    
        
            List of previous jobs in the US
            3
            
                
                    01/10/2001
                    38
                
                
                    01/12/2004
                    6
                
                
                    01/06/2005
                    10
                
            
        
    
    
        
            List of previous jobs in the UK
            2
            
                
                    01/05/1999
                    25
                
                
                    01/07/2001
                    3
                
            
        
    
    true
    6

we again get the wanted, correct result:

   
      
123 A Street
      28
      
         
            List of previous jobs in the US
            3
            
               
                  01/10/2001
                  38
               
            
         
      
      true
      6
   
   
      
123 A Street
      28
      
         
            List of previous jobs in the US
            3
            
               
                  01/12/2004
                  6
               
            
         
      
      true
      6
   
   
      
123 A Street
      28
      
         
            List of previous jobs in the US
            3
            
               
                  01/06/2005
                  10
               
            
         
      
      true
      6
   
   
      
123 A Street
      28
      
         
            List of previous jobs in the UK
            2
            
               
                  01/05/1999
                  25
               
            
         
      
      true
      6
   
   
      
123 A Street
      28
      
         
            List of previous jobs in the UK
            2
            
               
                  01/07/2001
                  3
               
            
         
      
      true
      6
   

Explanation: The processing is done in a named template (StructRepro) and controlled by a single external parameter named pLeafNodes, that must contain a nodeset of all nodes whose "upward structure" is to be reproduced in the result.