Remove XML Node using java parser

Question

In the below sample XML, how to remove Entire B Node if E=13 using java parser.

   
     
       
         11         


        

Answer 1

Here is the code of removing node B using XPath with predicate. It is based on VTD-XML, which uniquely implements incremental update.

import com.ximpleware.*;
import java.io.*;

public class removeNode {
    public static void  main(String s[]) throws VTDException, IOException{
        VTDGen vg = new VTDGen();
        if (!vg.parseFile("input.xml", false));
        VTDNav vn = vg.getNav();
        AutoPilot ap = new AutoPilot(vn);
        XMLModifier xm = new XMLModifier(vn);
        ap.selectXPath("/xml/A/B[C/E='13']");
        while (ap.evalXPath()!=-1){
            xm.remove();
        }
        xm.output("output.xml");
    }

}