Open Library authors dump: olid/names to file

OpenLibraryOLIDName.java

package net.libcode.www.openlibrary;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;

import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;

public class OpenLibraryOLIDName {

	public static final JSONParser parser = new JSONParser();
	public static final String authors = "/home/mcooper/OL-Data/ol_dump_authors_2011-12-31.txt";
	public static final String authors_olids = "/home/mcooper/OL-Data/olid_authors.txt";
	
	public static void main(String[] args) throws ParseException, IOException {
		long startTime = System.currentTimeMillis();
		processData(authors, authors_olids, "\t", false);
		long endTime = System.currentTimeMillis();
		System.out.println("Total execution time: " + ((endTime - startTime) * 0.001) + "s"); 
	}
	
	public static void processData(String file, String output_file, String delimiter, boolean print) throws ParseException, IOException {
		BufferedReader reader = new BufferedReader(new FileReader(new File(file)));
		BufferedWriter writer = new BufferedWriter(new FileWriter(new File(output_file)));
		String line;
		int count = 0;
		while((line = reader.readLine()) != null) {
			count += 1;
			
			// Get the OLID
			String[] parts = line.split("\t");
			String id = parts[1];
			
			// Get the JSON
			String json = parts[4];
			JSONObject j = (JSONObject) parser.parse(json);
			
			// Get the name
			String name = "";
			if(j != null) {
				String result = (String) j.get("name");
				if(result != null) name = result;
			}
			
			writer.write(id + delimiter + name);
			writer.newLine();
			
			if(print) System.out.println(count + ": " + line);
		}
		writer.close();
		System.out.println("ID/NAMES #" + count);
	}

}