READ XML FILE AND GROUP THEM INTO BATCH

EXCERCISE: 

• Reading a XML file and dividing it into seperate chunks

SOLUTION:

• Create a new binary package called notes:

• cargo run --build notes

• Add rust analyser to vscode settings.json.
• Go to crates.io, search for chrono.
• Copy their version and paste it in cargo.toml.

• chrono = "0.4.23"
  xmltree = "0.10.3"

• Store your xml in dict.xml file

• use xmltree::Element;
  use std::fs::File;
  use std::io::Read;
  use std::time::{Instant, Duration};
  use std::thread::sleep;
  fn main(){
      let mut file = File::open("dict.xml").unwrap();
      let mut xml_string = String::new();
      file.read_to_string(&mut xml_string).unwrap();
      let start = Instant::now();
      let xml_string = xml_string.replace("", "");
      let root = Element::parse(xml_string.as_bytes()).unwrap();
      let batch_size = 1;
      let children = root.children;
      for (_i, chunk)  in children.chunks(batch_size).enumerate()  {
          let mut root = Element::new("LISTOFLEDGERS");
          root.children = chunk.to_vec();
          sleep(Duration::from_millis(200));
  
      }
      let end = Instant::now();
      let diff = end.duration_since(start);
      println!("The time of execution of above program is {:?}ms", diff.as_millis());
  }