Sort parent nodes XML depends on child nodes values

Question

I have a following XML

Answer 1

I think you can go with this simple transform:

When applied to your input (corrected to make it well-formed):

 
    
    
     
         
        
            2222 
            field1
         
        
            ABC 
            field2
         
     
     
         
        
            1111 
            field1
         
        
            XYZ 
            field2
         
     

produces:

    
    
    
        
        
            1111
            field1
        
        
            XYZ
            field2
        
    
    
        
        
            2222
            field1
        
        
            ABC
            field2
        
    

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Explanation:

• Use of identity rule to copy every thing as is.
• override the required DataN elements and simple application of sort condition based on $field input parameter.
• data-type for sorting dynamically changes according to element field type